WorldWideScience

Sample records for white pine weevil1w

  1. High elevation white pines educational website

    Science.gov (United States)

    Anna W. Schoettle; Michele Laskowski

    2011-01-01

    The high elevation five-needle white pines are facing numerous challenges ranging from climate change to invasion by a non-native pathogen to escalation of pest outbreaks. This website (http://www.fs.fed.us/rm/highelevationwhitepines/) serves as a primer for managers and the public on the high elevation North American five-needle pines. It presents information on each...

  2. White pine blister rust in the interior Mountain West

    Science.gov (United States)

    Kelly Burns; Jim Blodgett; Dave Conklin; Brian Geils; Jim Hoffman; Marcus Jackson; William Jacobi; Holly Kearns; Anna Schoettle

    2010-01-01

    White pine blister rust is an exotic, invasive disease of white, stone, and foxtail pines (also referred to as white pines or five-needle pines) in the genus Pinus and subgenus Strobus (Price and others 1998). Cronartium ribicola, the fungus that causes WPBR, requires an alternate host - currants and gooseberries in the genus Ribes and species of Pedicularis...

  3. Histology of white pine blister rust in needles of resistant and susceptible eastern white pine

    Science.gov (United States)

    Joel A. Jurgens; Robert A. Blanchette; Paul J. Zambino; Andrew David

    2003-01-01

    White pine blister rust, Cronartium ribicola, has plagued the forests of North America for almost a century. Over past decades, eastern white pine (Pinus strobus) that appear to tolerate the disease have been selected and incorporated into breeding programs. Seeds from P. strobus with putative resistance were...

  4. White pine blister rust resistance research in Minnesota and Wisconsin

    Science.gov (United States)

    Andrew David; Paul Berrang; Carrie Pike

    2012-01-01

    The exotic fungus Cronartium ribicola causes the disease white pine blister rust on five-needled pines throughout North America. Although the effects of this disease are perhaps better known on pines in the western portion of the continent, the disease has also impacted regeneration and growth of eastern white pine (Pinus strobus L. ...

  5. Examining possible causes of mortality in white pine seedlings

    Science.gov (United States)

    Elizabeth Gilles; Ronald Reitz; Greg Hoss; David. Gwaze

    2011-01-01

    White pine (Pinus strobus L.) is one of the most important timber trees in the northeastern United States and eastern Canada (Demeritt and Garrett 1996). White pine is not native to Missouri; it is commonly planted for wind breaks and erosion control and as an ornamental. Unusual mortality of bare-root seedlings of white pine purchased from the...

  6. Blister rust control in the management of western white pine

    Science.gov (United States)

    Kenneth P. Davis; Virgil D. Moss

    1940-01-01

    The forest industry of the western white pine region depends on the production of white pine as a major species on about 2,670,000 acres of commercial forest land. Continued production of this species and maintenance of the forest industry at anything approaching its present level is impossible unless the white pine blister rust is controlled. Existing merchantable...

  7. White pine blister rust resistance of 12 western white pine families at three field sites in the Pacific Northwest

    Science.gov (United States)

    Richard A. Sniezko; Robert Danchok; Jim Hamlin; Angelia Kegley; Sally Long; James Mayo

    2012-01-01

    Western white pine (Pinus monticola Douglas ex D. Don) is highly susceptible to the non-native, invasive pathogen Cronartium ribicola, the causative agent of white pine blister rust. The susceptibility of western white pine to blister rust has limited its use in restoration and reforestation throughout much of western North...

  8. Cronartium ribicola resistance in whitebark pine, southwestern white pine, limber pine and Rocky Mountain bristlecone pine - preliminary screening results from first tests at Dorena GRC

    Science.gov (United States)

    Richard A. Sniezko; Angelia Kegley; Robert Danchok; Anna W. Schoettle; Kelly S. Burns; Dave Conklin

    2008-01-01

    All nine species of white pines (five-needle pines) native to the United States are highly susceptible to Cronartium ribicola, the fungus causing white pine blister rust. The presence of genetic resistance will be the key to maintaining or restoring white pines in many ecosystems and planning gene conservation activities. Operational genetic...

  9. Determining fire history from old white pine stumps in an oak-pine forest

    Science.gov (United States)

    Richard P. Guyette; Daniel C. Dey; Chris McDonell

    1995-01-01

    Fire scars on stumps of white pine (Pinus strobus L.) in a red oak (Quercus rubra L.) white pine forest near Bracebridge, Ontario, were dated using dendrochronological methods. A chronological record of fires that caused basal scarring is preserved in the remnant white pine stumps, which were estimated to be up to 135 years old...

  10. White pines, Ribes, and blister rust: integration and action

    Science.gov (United States)

    R. S. Hunt; B. W. Geils; K. E. Hummer

    2010-01-01

    The preceding articles in this series review the history, biology and management of white pine blister rust in North America, Europe and eastern Asia. In this integration, we connect and discuss seven recurring themes important for understanding and managing epidemics of Cronartium ribicola in the white pines (five-needle pines in subgenus Strobus). Information and...

  11. Status of white pine blister rust and seed collections in california's high-elevation white pine species

    Science.gov (United States)

    J. Dunlap

    2011-01-01

    White pine blister rust (caused by the non-native pathogen Cronartium ribicola) reached northern California about 80 years ago. Over the years its spread southward had been primarily recorded on sugar pine. However, observations on its occurrence had also been reported in several of the higher elevation five-needled white pine species in California. Since the late...

  12. Monitoring white pine blister rust infection and mortality in whitebark pine in the Greater Yellowstone ecosystem

    Science.gov (United States)

    Cathie Jean; Erin Shanahan; Rob Daley; Gregg DeNitto; Dan Reinhart; Chuck Schwartz

    2011-01-01

    There is a critical need for information on the status and trend of whitebark pine (Pinus albicaulis) in the Greater Yellowstone Ecosystem (GYE). Concerns over the combined effects of white pine blister rust (WPBR, Cronartium ribicola), mountain pine beetle (MPB, Dendroctonus ponderosae), and climate change prompted an interagency working group to design and implement...

  13. Selection for resistance to white pine blister rust affects the abiotic stress tolerances of limber pine

    Science.gov (United States)

    Patrick J. Vogan; Anna W. Schoettle

    2015-01-01

    Limber pine (Pinus flexilis) mortality is increasing across the West as a result of the combined stresses of white pine blister rust (Cronartium ribicola; WPBR), mountain pine beetle (Dendroctonus ponderosae), and dwarf mistletoe (Arceuthobium cyanocarpum) in a changing climate. With the continued spread of WPBR, extensive mortality will continue with strong selection...

  14. White pines, Ribes, and blister rust: a review and synthesis

    Science.gov (United States)

    Brian W. Geils; Kim E. Hummer; Richard S. Hunt

    2010-01-01

    For over a century, white pine blister rust (Cronartium ribicola) has linked white pines (Strobus) with currants and gooseberries (Ribes) in a complex and serious disease epidemic in Asia, Europe, and North America. Because of ongoing changes in climate, societal demands for forests and their amenities, and scientific advances in genetics and proteomics, our current...

  15. Resistance of three interspecific white pine hybrids to blister rust

    Science.gov (United States)

    R. Z. Callaham

    1962-01-01

    Three white pine hybrids exposed to infection by white pine blister rust (Cronartium ribicola Fischer) since 1946 have inherited the relative resistance of their parental species. The hybrids were produced from controlled pollinations in 1940 and 1941 at the Institute of Forest Genetics, Placerville, Calif. Twelve seedlings of each hybrid were...

  16. White-pine weevil control with knapsack mistblower

    Science.gov (United States)

    Arthur R. Hastings; John H. Risley

    1962-01-01

    Tests made in New York State in 1956-60 indicate that the portable knapsack mistblower has considerable promise for practical control of the white-pine weevil, now the major insect enemy of white pine in the Northeast. Lindane and malathion, alone and with Aroclor 5460, were the toxicants used in the tests.

  17. Weevil - red rot associations in eastern white pine

    Science.gov (United States)

    Myron D. Ostrander; Clifford H. Foster

    1957-01-01

    The presence of red rot (Fomes pini) in pruned white pine stands has often been attributed to the act of pruning. This assumption may well be true for heavily stocked stands where thinning has been neglected and pruning scars are slow to heal. The question then arises: How do we account for the red rot often found in vigorous unpruned white pine stands? Evidence...

  18. 77 FR 45331 - White Pine-Nye Resource Advisory Committee

    Science.gov (United States)

    2012-07-31

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of two meetings. SUMMARY: The White Pine-Nye Resource Advisory Committee will meet in Eureka, Nevada. The...

  19. 78 FR 30847 - White Pine-Nye Resource Advisory Committee

    Science.gov (United States)

    2013-05-23

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of two meetings. ] SUMMARY: The White Pine-Nye Resource Advisory Committee will meet in Eureka, Nevada...

  20. 76 FR 48800 - White Pine-Nye Resource Advisory Committee

    Science.gov (United States)

    2011-08-09

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meeting cancellation. SUMMARY: The White Pine-Nye Resource Advisory Committee meeting scheduled in Eureka...

  1. 77 FR 58095 - White Pine-Nye Resource Advisory Committee

    Science.gov (United States)

    2012-09-19

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice meeting. SUMMARY: The White Pine-Nye Resource Advisory Committee will meet in Eureka, Nevada. The...

  2. Spatial and population genetic structure of microsatellites in white pine

    Science.gov (United States)

    Paula E. Marquardt; Bryan K. Epperson

    2004-01-01

    We evaluated the population genetic structure of seven microsatellite loci for old growth and second growth populations of eastern white pine (Pinus strobus). From each population, located within Hartwick Pines State Park, Grayling, Michigan, USA, 120-122 contiguous trees were sampled for genetic analysis. Within each population, genetic diversity...

  3. Computer simulation of white pine blister rust epidemics

    Science.gov (United States)

    Geral I. McDonald; Raymond J. Hoff; William R. Wykoff

    1981-01-01

    A simulation of white pine blister rust is described in both word and mathematical models. The objective of this first generation simulation was to organize and analyze the available epidemiological knowledge to produce a foundation for integrated management of this destructive rust of 5-needle pines. Verification procedures and additional research needs are also...

  4. Strong partial resistance to white pine blister rust in sugar pine

    Science.gov (United States)

    Bohun B. Kinloch, Jr.; Deems Burton; Dean A. Davis; Robert D. Westfall; Joan Dunlap; Detlev Vogler

    2012-01-01

    Quantitative resistance to white pine blister rust in 128 controlled- and open-pollinated sugar pine families was evaluated in a “disease garden”, where alternate host Ribes bushes were interplanted among test progenies. Overall infection was severe (88%), but with great variation among and within families: a 30-fold range in numbers of infections...

  5. The influence of white pine blister rust on seed dispersal in whitebark pine

    Science.gov (United States)

    Shawn T. McKinney; Diana F. Tomback

    2007-01-01

    We tested the hypotheses that white pine blister rust (Cronartium ribicola J.C. Fisch.) damage in whitebark pine (Pinus albicaulis Engelm.) stands leads to reduced (1) seed cone density, (2) predispersal seed survival, and (3) likelihood of Clark's Nutcracker (Nucifraga columbiana (Wilson, 1811)) seed...

  6. Non-Ribes alternate hosts of white pine blister rust: What this discovery means to whitebark pine

    Science.gov (United States)

    Paul J. Zambino; Bryce A. Richardson; Geral I. McDonald; Ned B. Klopfenstein; Mee-Sook. Kim

    2006-01-01

    From early to present-day outbreaks, white pine blister rust caused by the fungus Cronartium ribicola, in combination with mountain pine beetle outbreaks and fire exclusion has caused ecosystem-wide effects for all five-needled pines (McDonald and Hoff 2001). To be successful, efforts to restore whitebark pine will require sound management decisions that incorporate an...

  7. 75 FR 23666 - Huron-Manistee National Forests, White Pines Wind Farm Project, Mason County, MI

    Science.gov (United States)

    2010-05-04

    ... Forest Service Huron-Manistee National Forests, White Pines Wind Farm Project, Mason County, MI AGENCY... process for the White Pines Wind Farm Project. DATES: The Notice of Intent to prepare the White Pines Wind... statement. SUMMARY: The Forest Service proposed to prepare an environmental impact statement for the White...

  8. Silvicultural approaches for management of eastern white pine to minimize impacts of damaging agents

    Science.gov (United States)

    M.E. Ostry; G. Laflamme; S.A. Katovich

    2010-01-01

    Since the arrival to North America of Cronartium ribicola, management of eastern white pine has been driven by the need to avoid the actual or, in many areas, the perceived damage caused by white pine blister rust. Although white pine has lost much of its former dominance, it remains a valuable species for biotic diversity, aesthetics, wildlife...

  9. Cleaning to favor western white pine - its effects upon composition, growth, and potential values

    Science.gov (United States)

    Raymond J. Boyd

    1959-01-01

    The management of western white pine (Pinus monticola) requires the production of a high proportion of valuable white pine crop trees in order to defray the costs of protection from blister rust. Current average selling prices of lumber give white pine about $50 per m.b.f. advantage over western larch (Larix occidentalis) and Douglas-fir (Pseudotsuga menziesii), the...

  10. Eastern white pine: production, markets, and marketing of primary manufacturers

    Science.gov (United States)

    Delton Alderman; Paul Duvall; Robert Smith; Scott Bowe

    2007-01-01

    Eastern white pine (EWP) production and manufacturing have been a staple of the forest products industry since the arrival of the first settlers in the United States. Current EWP market segments range from cabinets to flooring to log cabins to moulding to toys. Today's EWP producers and manufacturers are faced with unprecedented challenges from substitute products...

  11. Molecular dissection of white pine genetic resistance to Cronartium ribicola

    Science.gov (United States)

    Jun-Jun Liu; Richard Sniezko

    2011-01-01

    Pinus monticola (Dougl. ex D. Don.) maintains a complex defence system that detects white pine blister rust pathogen (Cronartium ribicola J.C.Fisch.) and activates resistance responses. A thorough understanding of how it functions at the molecular level would provide us new strategies for creating forest trees with durable disease resistance. Our research focuses on...

  12. Entrepreneurial orientation of eastern white pine primary producers and secondary manufacturers: A regional phenomenon?

    Science.gov (United States)

    Delton Alderman

    2011-01-01

    Eastern white pine (EWP) and red pine make up nearly 8.5 percent of the total sawtimber volume in the New England, Mid-Atlantic, and Lake States regions. The majority of white pine growing stock is found in the Mid-Atlantic and Lake State regions; however, the center of eastern white pine production and markets is in New England. EWP is produced in both hardwood...

  13. Age, size and regeneration of old growth white pine at Dividing Lake Nature Reserve, Algonquin Park, Ontario

    Science.gov (United States)

    Richard P. Guyette; Daniel C. Dey

    1995-01-01

    The age, mode of regeneration and diameter growth of white pine were determined in an old growth stand near Dividing Lake, Algonquin Provincial Park. The white pine ranged in age from 267 to 486 years. There was no significant relationship between white pine age and diameter (DBH). The distribution of tree ages indicated that the white pine component in this mixed...

  14. Options for the management of white pine blister rust in the Rocky Mountain Region

    Science.gov (United States)

    Kelly S. Burns; Anna W. Schoettle; William R. Jacobi; Mary F. Mahalovich

    2008-01-01

    This publication synthesizes current information on the biology, distribution, and management of white pine blister rust (WPBR) in the Rocky Mountain Region. In this Region, WPBR occurs within the range of Rocky Mountain bristlecone pine (Pinus aristata), limber pine (P. flexilis), and whitebark pine (P. albicaulis...

  15. Heterogeneous nonmarket benefits of managing white pine bluster rust in high-elevation pine forests

    Science.gov (United States)

    James R. Meldrum; Patricia A. Champ; Craig A. Bond

    2013-01-01

    This article describes a nonmarket valuation study about benefits of managing the invasive disease white pine blister rust in highelevation forests in the Western United States. Results demonstrate that, on average, households in the Western United States are willing to pay $154 to improve the resiliency of these forests. Factor analysis shows that long-run protection...

  16. Comparison of stem volume of Eastern white pine (Pinus strobus L. and Scotch pine (Pinus sylvestris L.

    Directory of Open Access Journals (Sweden)

    Petr Vaněk

    2013-01-01

    Full Text Available This study deals with mensurational and volumetric characteristics of introduced Eastern white pine (Pinus strobus in comparison with native Scotch pine (Pinus sylvestris of the similar age and habitat. Municipal forests of Hradec Králové city (an area with the natural occurrence of Scotch pine and introduced Eastern white pine; east part of Bohemia, altitude from 250 to 280 m a.s.l. belong to typological unit – nutrient-very poor, and acidic sites. There comparative analysis of basic stem variables (stem diameter at the breast-height – DBH, total tree height – H and stem volume – V of dominant trees (10 individuals with the highest DBH of both species in four suitable forest stands of age from 42 to 102 years was done. Statistical analysis showed similar trends in all forests stands. Eastern white pine compared to Scotch pine reached larger mean DBH (up to 16%. H – values do not have a clear trend across the forest stands and did not show large differences in all cases. Eastern white pine compared to Scotch pine showed also larger mean stem volume (up to 47%. Therefore, introduced Eastern white pine reached higher stem size parameters and wood production compared to native Scotch pine in studied forest district.

  17. White pine in the American West: A vanishing species - can we save it?

    Science.gov (United States)

    Leon F. Neuenschwander; James W. Byler; Alan E. Harvey; Geral I. McDonald; Denise S. Ortiz; Harold L. Osborne; Gerry C. Snyder; Arthur Zack

    1999-01-01

    Forest scientists ask that everyone, from the home gardener to the forest manager, help revive western white pine by planting it everywhere, even in nonforest environments such as our neighborhood streets, parks, and backyards. White pine, long ago considered the "King Pine," once dominated the moist inland forests of the Northwest, eventually spawning whole...

  18. First report of the white pine blister rust pathogen, Cronartium ribicola, in Arizona

    Science.gov (United States)

    M. L. Fairweather; Brian Geils

    2011-01-01

    White pine blister rust, caused by Cronartium ribicola J.C. Fisch., was found on southwestern white pine (Pinus flexilis James var. reflexa Engelm., synonym P. strobiformis Engelm.) near Hawley Lake, Arizona (Apache County, White Mountains, 34.024°N, 109.776°W, elevation 2,357 m) in April 2009. Although white pines in the Southwest (Arizona and New Mexico) have been...

  19. Slash disposal in western white pine forests in Idaho

    Science.gov (United States)

    J. A. Larsen; W. C. Lowdermilk

    1924-01-01

    If all sizes of material produced by a forest are salable, very little logging debris of slash remains to hinder the reproduction or to increase the fire hazard. In the white-pine type of northern Idaho, however, only the larger and most valuable forest products can at present be taken out at a profit. The virgin forests of this region yield from 15,000 to 40,000, and...

  20. Sampling plantations to determine white-pine weevil injury

    Science.gov (United States)

    Robert L. Talerico; Robert W., Jr. Wilson

    1973-01-01

    Use of 1/10-acre square plots to obtain estimates of the proportion of never-weeviled trees necessary for evaluating and scheduling white-pine weevil control is described. The optimum number of trees to observe per plot is estimated from data obtained from sample plantations in the Northeast and a table is given. Of sample size required to achieve a standard error of...

  1. Random amplified polymorphic DNA markers tightly linked to a gene for resistance to white pine blister rust in sugar pine

    Science.gov (United States)

    Michael E. Devey; Annette Delfino-Mix1; Bohun B. Kinloch; David B. NEALEt

    1995-01-01

    We have genetically mapped a gene for resistance to white pine blister rust (Cronartium ribicola Fisch.) in sugar pine (Pinus lambertiana Dougl.) by using an approach which relies on three factors: (i) the ability to assay for genetic markers in the haploid stage of the host's life cycle, using...

  2. Distribution and frequency of a gene for resistance to white pine blister rust in natural populations of sugar pine

    Science.gov (United States)

    Bohun B. Kinloch Jr.

    1992-01-01

    The gametic frequency of a dominant allcle (R) for resistance to white pine blister rust, a disease caused by an introduced pathogen (Cronartium ribicola), in natural populations of sugar pine was estimated by the kind of leaf symptom expressed after artificial inoculation of wind-pollinated seedlings from susceptible seed-parent...

  3. Resistance to white pine blister rust in Pinus flexilis and P

    Science.gov (United States)

    Anna W. Schoettle; Richard A. Sniezko; Angelia Kegley; Jerry Hill; Kelly S. Burns

    2010-01-01

    The non-native fungus Cronartium ribicola, that causes white pine blister rust (WPBR), is impacting or threatening limber pine, Pinus flexilis, and Rocky Mountain bristlecone pine, Pinus aristata. In the Southern Rockies, where the rust invasion is still expanding, we have the opportunity to be proactive and prepare the landscape for invasion. Genetic...

  4. Helicopter spraying with 2,4,5-T to release young white pines

    Science.gov (United States)

    Thomas W. McConkey

    1958-01-01

    When forest fires swept over southwestern Maine in 1947, some 130,000 acres of forest land were burned over. This was mostly white pine land--sites too poor to grow good hardwood stands. After the fire, white pine reproduction became established on 5,000 to 6,000 acres of this land. But by 1954 most of the young pine was suppressed or at least was in competition with...

  5. Evaluation of promoters and visual markers for transformation of eastern white pine

    Science.gov (United States)

    Allan Zipf; Alex M. Diner; Rufina Ward; Suman Bharara; George Brown; R. Nagmani; L.K. Pareek; Govind C. Sharma

    2001-01-01

    This report serves to evaluate possible promoters for use in the production of trmsgenic eastern white pine (Pinus strobus L.). Embryogenic cultures of eastern white pine were bombarded with gold particles coated separately with a variety of gene constructs containing the Uida B-glucoronidase (GUS) or green flourescent protein (GFP) reporter gene....

  6. Sex Pheromone of Conophthorus ponderosae (Coleoptera: Scolytidae) in a Coastal Stand of Western White Pine (Pinaceae)

    Science.gov (United States)

    Daniel R. Miller; Harold D. Pierce; Peter de Groot; Nicole Jeans-Williams; Robb Bennett; John H. Borden

    2000-01-01

    An isolated stand of western white pine, Pinus monticola Dougl. ex D. Don, on Texada Island (49°40'N, 124°10'W), British Columbia, is extremely valuable as a seed-production area for progeny resistant to white pine blister rust, Cronartium ribicola J.C. Fisch. (Cronartiaceae). During the past 5 years, cone beetles, ...

  7. Value loss from weevil-caused defects in eastern white pine lumber

    Science.gov (United States)

    Myron D. Ostrander; Carl H. Stoltenberg

    1957-01-01

    Owners of eastern white pine stands suffer financially in several ways from attacks by the white-pine weevil (Pissodes strobi). Crooks, forks, and other weevil-caused tree-bole deformities increase bucking, logging, and sawing costs, and they reduce recoverable volumes. The injuries also reduce the average value of the lumber recovered. It is only with this reduction...

  8. Genetic structure, diversity, and inbreeding of eastern white pine under different management conditions

    Science.gov (United States)

    Paula E. Marquardt; Craig S. Echt; Bryan K. Epperson; Dan M. Pubanz

    2007-01-01

    Resource sustainability requires a thorough understanding of the influence of forest management programs on the conservation of genetic diversity in tree populations. To observe how differences in forest structure affect the genetic structure of eastern white pine (Pinus strobus L.), we evaluated six eastern white pine sites across the 234000 acre (1...

  9. 76 FR 85 - Nye/White Pine County Resource Advisory Committee (RAC)

    Science.gov (United States)

    2011-01-03

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service Nye/White Pine County Resource Advisory Committee (RAC) AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The Nye/White Pine County Resource Advisory Committee (RAC) will hold...

  10. 76 FR 13600 - White Pine-Nye County Resource Advisory Committee (RAC)

    Science.gov (United States)

    2011-03-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye County Resource Advisory Committee (RAC) AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The White Pine-Nye County Resource Advisory Committee (RAC) will hold...

  11. 76 FR 8334 - White Pine-Nye County Resource Advisory Committee (RAC)

    Science.gov (United States)

    2011-02-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye County Resource Advisory Committee (RAC) AGENCY: Forest Service, USDA. ACTION: Notice of meeting. SUMMARY: The White Pine-Nye County Resource Advisory Committee (RAC) will hold...

  12. 76 FR 25298 - White Pine-Nye County Resource Advisory Committee

    Science.gov (United States)

    2011-05-04

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE Forest Service White Pine-Nye County Resource Advisory Committee AGENCY: Forest Service, USDA. ACTION: Notice of meetings. SUMMARY: The White Pine-Nye County Resource Advisory Committee will meet in Eureka...

  13. Biology and pathology of Ribes and their implications for management of white pine blister rust

    Science.gov (United States)

    P. J. Zambino

    2010-01-01

    Ribes (currants and gooseberries) are telial hosts for the introduced and invasive white pine blister rust fungus, Cronartium ribicola. Knowledge of wild and introduced Ribes helps us understand the epidemiology of blister rust on its aecial hosts, white pines, and develop disease control and management strategies. Ribes differ by species in their contribution to...

  14. Ecology of whitebark pine populations in relation to white pine blister rust infection in subalpine forests of the Lake Tahoe Basin: Implications for restoration

    Science.gov (United States)

    Patricia E. Maloney; Detlev R. Vogler; Camille E. Jensen; Annette. Delfino Mix

    2012-01-01

    For over a century, white pine blister rust (WPBR), caused by the introduced fungal pathogen, Cronartium ribicola J.C. Fisch., has affected white pine (Subgenus Strobus) individuals, populations, and associated forest communities in North America. We surveyed eight populations of whitebark pine (Pinus albicaulis Engelm.) across a range of environmental conditions in...

  15. White pine blister rust resistance in Pinus monticola and P. albicaulis in the Pacific Northwest U.S. – A tale of two species

    Science.gov (United States)

    Richard A. Sniezko; Angelia Kegley; Robert Danchok

    2012-01-01

    Western white pine (Pinus monticola Dougl. ex D. Don) and whitebark pine (P. albicaulis Engelm.) are white pine species with similar latitudinal and longitudinal geographic ranges in Oregon and Washington (figs. 1 and 2). Throughout these areas, whitebark pine generally occurs at higher elevations than western white pine. Both...

  16. Soil Preferences in Germination and Survival of Limber Pine in the Great Basin White Mountains

    Directory of Open Access Journals (Sweden)

    Brian V. Smithers

    2017-11-01

    Full Text Available In the Great Basin, limber pine is a sub-alpine tree species that is colonizing newly available habitat above treeline in greater numbers than treeline-dominating Great Basin bristlecone pine, especially on dolomite soil, where few plants are able to grow and where limber pine adults are rare. To examine the role of soil type on germination and establishment of limber pine, I sowed limber pine seeds in containers of the three main White Mountains soil types in one location while measuring soil moisture and temperature. I found that dolomite soil retains water longer, and has higher soil water content, than quartzite and granite soils and has the coolest maximum growing season temperatures. Limber pine germination and survival were highest in dolomite soil relative to quartzite and granite where limber pine adults are more common. While adult limber pines are rare on dolomite soils, young limber pines appear to prefer them. This indicates that limber pine either has only recently been able to survive in treeline climate on dolomite or that bristlecone pine has some long-term competitive advantage on dolomite making limber pine, a species with 1500 year old individuals, an early succession species in Great Basin sub-alpine forests.

  17. Forest Floor, Soil, andVegetation Responses to Sludge Fertilization in Red and White Pine Plantations

    Science.gov (United States)

    D.G. Brockway

    1983-01-01

    An undigested, nutrient-enriched papermill sludge applied to a 40-year-old red pine (Pinus resinosa Ait.) plantation at rates of 4, 8, 16, and 32 Mg/ha resulted in nitrogen application rates of 282, 565, 1130, and 2260 kg/ha.An anaerobically digested municipal sludge applied to a 36-year-old red pine and white pine (Pinus strobus L....

  18. Evaluation of white-rot fungal growth on southern yellow pine wood chips pretreated with blue-stain fungi

    Science.gov (United States)

    Suki C. Croan

    2000-01-01

    White-rotting basidiomycetes do not colonize on southern yellow pine. This study seeks to reduce the resinous extractive content of southern yellow pine by treating it with blue stain fungi. The mycelial growth of wood-inhabiting ligninolytic white-rot fungi can be achieved on pretreated southern yellow pine wood. Aureobasidium, Ceratocystis, and Ophiostoma spp....

  19. An investigation into western white pine partial resistance against the rust pathogen Cronartium ribicola using in vitro screening method

    Science.gov (United States)

    D. Noshad; J.N. King

    2012-01-01

    Cronartium ribicola is one of the most destructive forest pathogens of North American white pines. The pathogen infects pine trees through their stomata, colonizes the stem, and produces stem cankers the following growing season. In this research, we collected samples from different white pine populations across Canada and the United States to...

  20. A paradigm shift for white pine blister rust: Non-Ribes alternate hosts for Cronartium ribicola in North America

    Science.gov (United States)

    Paul J. Zambino; Bryce A. Richardson; Geral I. McDonald; Ned B. Klopfenstein; Mee-Sook. Kim

    2007-01-01

    Naturally occurring Cronartium ribicola infections were discovered in August and September, 2004 on Pedicularis racemosa and Castilleja miniata in a mixed stand of white pine blister rust-infected whitebark pine (Pinus albicaulis) and western white pine (P. monticola) in northern Idaho, at Roman Nose Lakes, ca 30 km west of Bonners Ferry. Infections were confirmed by...

  1. Predicting the effects of tropospheric ozone on regional productivity of ponderosa pine and white fir.

    Science.gov (United States)

    D.A. Weinstein; J.A. Laurence; W.A. Retzlaff; J.S. Kern; E.H. Lee; W.E. Hogsett; J. Weber

    2005-01-01

    We simulated forest dynamics of the regional ponderosa pine-white fir conifer forest of the San Bernadino and Sierra Nevada mountains of California to determine the effects of high ozone concentrations over the next century and to compare the responses to our similar study for loblolly pine forests of the southeast. As in the earlier study, we linked two models, TREGRO...

  2. Injury to white pine crowns in northern New England in 1955

    Science.gov (United States)

    R. W., Jr. Wilson

    1956-01-01

    Unusual development of white pine terminal shoots - due to some sort of damage - was observed during the summer of 1955 throughout northern New England. In at least one instance it was also observed in pitch pine, and it may have occurred in other species.

  3. Landscape biology of western white pine: implications for conservation of a widely-distributed five-needle pine at its southern range limit

    Science.gov (United States)

    Patricia Maloney; Andrew Eckert; Detlev Vogler; Camille Jensen; Annette Delfino Mix; David Neale

    2016-01-01

    Throughout much of the range of western white pine, Pinus monticola Dougl., timber harvesting, fire exclusion and the presence of Cronartium ribicola J. C. Fisch., the white pine blister rust (WPBR) pathogen, have led to negative population and genetic consequences. To address these interactions, we examined population dynamics...

  4. Effect of white pine blister rust (Cronartium ribicola) and rust-resistance breeding on genetic variation in western white pine Pinus monticola)

    Science.gov (United States)

    M. -S. Kim; S. J. Brunsfeld; G. I. McDonald; N. B. Klopfenstein

    2003-01-01

    Western white pine (Pinus monticola) is an economically and ecologically important species from western North America that has declined over the past several decades mainly due to the introduction of blister rust (Cronartium ribicola) and reduced opportunities for regeneration. Amplified fragment length polymorphism (AFLP) was used...

  5. Girdling as a means of removing undesirable tree species from the western white pine type

    Science.gov (United States)

    Donald R. Brewster; Julius A. Larsen

    1925-01-01

    Western hemlock (Tsuga heterophylla) and white or grand fir (Abies grandis), two shade-tolerating species which are found in more or less abundance in the western white pine type in northern Idaho and northwestern Montana, must usually be classified as undesirable species silviculturally, and for several reasons. In both species the liability to infection by heart-rot...

  6. Characterization of Fungal Pathogens Associated with White Pine Needle Damage (WPND in Northeastern North America

    Directory of Open Access Journals (Sweden)

    Kirk Broders

    2015-11-01

    Full Text Available Eastern white pine is a crucial ecological and economic component of forests in the northern USA and eastern Canada, and is now facing an emerging problem in white pine needle damage (WPND. It is still unclear whether WPND results from one, or the combination of several fungal pathogens. Therefore, the first objective of this study was to characterize the fungi associated with WPND in the northeastern United States and document the damage being done to mature eastern white pine as a result of repeated defoliation. To date, 22 species of fungi, either cultured from diseased pine needles or formed fruiting bodies on pine needles were identified based on morphology and sequence data. Lecanosticta acicola and a putative new species of Septorioides were the species most frequently recovered from diseased needles, in addition to needle cast fungi Lophophacidium dooksii and Bifusella linearis, two obligate fungal pathogens that were frequently observed on pine needles in the northeast, but have not been known to cause excessive defoliation of eastern white pine. A second objective was to monitor yearly the health of 63 pairs of healthy and unhealthy trees in eight affected locations throughout New England. Since 2012, affected trees are increasingly and repeatedly chlorotic and defoliated every year. Trees that were initially healthy are now exhibiting symptoms. While L. acicola appears to be the primary pathogen causing WPND, several other common needle pathogens are being more frequently observed and the role of climate change may be important in the disease ecology of WPND. These defoliation events, while once a sporadic occurrence, have now become more frequent as observed in continued crown deterioration of eastern white pine in long-term monitoring plots followed during the course of this three-year study.

  7. First report of the white pine blister rust fungus, Cronartium ribicola, infecting Ribes inerme in north-central Utah

    Science.gov (United States)

    D. R. Vogler; B. W. Geils; K. Coats

    2017-01-01

    Cronartium ribicola Fisch. has not been found infecting any of the five-needle white pines (Pinus subgenus Strobus) in Utah, despite being established on both white pine and Ribes hosts in the other 10 western states, defined as those west of the 102° meridian.

  8. Polymerase Chain Reaction (PCR) applications in white pine blister rust resistance screening

    Science.gov (United States)

    Sam Hendricks; Wendy Sutton; Jeffrey Stone; Richard Sniezko; Angelia Kegley; Anna Schoettle

    2011-01-01

    A goal of breeding programs for resistance to white pine blister rust is the development of multigenic resistance, even if the genetics and mechanisms of resistance may be imperfectly understood. The goal of multigenic resistance has prompted efforts to categorize host resistance reactions at increasingly finer scales, to identify heritable traits that may confer...

  9. Transient expression of GUS in bombarded embryogenic longleaf, loblolly, and eastern white pine

    Science.gov (United States)

    Alex M. Diner; Allan Zipf; Rufina Ward; Yinghua Huang; George Brown

    1999-01-01

    Embryogenic tissue cultures derived from immature zygotic embryos of longleaf, loblolly, and eastern white pine were maintained in culture for up to 2 years, then bombarded with gold particles coated with a gene construct containing the GUS reporter gene fused to an adenine methyltransferase promoter from an algal virus. Physiological expression of GUS was observed in...

  10. Effects of thinning and fertilizing on production of western white pine seed

    Science.gov (United States)

    Burton V. Barnes

    1969-01-01

    In a 40-year-old western white pine plantation developed as a seed production area, heavy thinning and application of fertilizer in the fall significantly increased strobilus production the following spring. Applying fertilizer increased seed weight and cone length significantly, but thinning did not. Insects severely damaged the cone crop in the thinned...

  11. Dead western white pine: characteristics, product recovery, and problems associated with utilization.

    Science.gov (United States)

    Thomas A. Snellgrove; James M. Cahill

    1980-01-01

    When a western white pine (Pinus monticola Dougl. ex D. Don) tree dies, it undergoes a series of physical changes. The effects of these changes on product recovery are evaluated. Tabular information and prediction equations provide the tools necessary for using this resource.

  12. Gibberellin a4/7 promotes cone production on potted grafts of eastern white pine

    Energy Technology Data Exchange (ETDEWEB)

    Ho, R.H.; Schnekenburger, F.

    1992-01-01

    Potted grafts of eastern white pine growing in a heated greenhouse were sprayed weekly with 0.250 or 500 mg/L of gibberellin A4/7 for four different six-week periods between mid-May and mid-September.

  13. Distribution of Ribes, an alternate host of white pine blister rust, in Colorado and Wyoming

    Science.gov (United States)

    Holly S. J. Kearns; William R. Jacobi; Kelly S. Burns; Brian W. Geils

    2008-01-01

    Ribes (currants and gooseberries) are alternate hosts for Cronartium ribicola, the invasive fungus that causes blister rust of white pines (Pinus, subgenus Strobus) in the Rocky Mountain region of Colorado and Wyoming. The location, species, and density of Ribes can affect...

  14. Identification and evaluation of defects in eastern white pine logs and trees

    Science.gov (United States)

    M.D. Ostrander; M.D. Ostrander

    1971-01-01

    The grade of eastern white pine lumber is determined primarily by the condition, size, and frequency of natural blemishes characteristic of the species. These include bark pockets, cross grain, rot, knots, pitch pockets, and shake. Mismanufacture and seasoning defects also affect lumber grade. This guide, based on our latest knowledge about the identification and...

  15. White pine blister rust at mountain home demonstration state forest: a case study of the epidemic and prospects for genetic control.

    Science.gov (United States)

    Bohun B. Kinloch; Dulitz Jr.

    1990-01-01

    The behavior of white pine blister rust at Mountain Home State Demonstration Forest and surrounding areas in the southern Sierra Nevada of California indicates that the epidemic has not yet stabilized and that the most likely prognosis is a pandemic on white pines in this region within the next few decades. The impact on sugar pines, from young regeneration to old...

  16. Fusarium species associated with rhizosphere soil and diseased roots of eastern white pine seedlings and associated nursery soil

    Science.gov (United States)

    Cynthia M. Ocamb; Jennifer Juzwik

    1995-01-01

    Fusarium species isolated from necrotic roots of eastern white pine (Pinus strobus) seedlings in two nurseries included F. acuminatum, F. equiseti, F. oxysporum, F. oxysporum var. redolens, F. proliferatum, F....

  17. Uninjured trees - a meaningful guide to white-pine weevil control decisions

    Science.gov (United States)

    William E. Waters

    1962-01-01

    The white-pine weevil, Pissodes strobi, is a particularly insidious forest pest that can render a stand of host trees virtually worthless. It rarely, if ever, kills a tree; but the crooks, forks, and internal defects that develop in attacked trees over a period of years may reduce the merchantable volume and value of the tree at harvest age to zero. Dollar losses are...

  18. Natural seed fall in white pine (Pinus strobes L.) stands of varying density

    Science.gov (United States)

    Raymond E. Graber

    1970-01-01

    Seed fall was observed in three stands of mature white pines at stand basal-area densities of 80, 120, and 187 square feet per acre. It was found that the intermediate-density stand produced nearly 50 percent more seed than the stands of other densities. During a good seed year this stand produced 59 pounds of dry sound seed per acre. Most of the seeds were dispersed...

  19. Phenology of the Pine Bark Adelgid, Pineus strobi (Hemiptera: Adelgidae), in White Pine Forests of Southwestern Virginia.

    Science.gov (United States)

    Wantuch, Holly A; Kuhar, Thomas P; Salom, Scott M

    2017-12-08

    The pine bark adelgid, Pineus strobi Hartig (Hemiptera: Adelgidae), is a native herbivore of eastern white pine, Pinus strobus L. (Pinales: Pinaceae), in eastern North America. P. strobi does not appear to have any dominant overwintering lifestage in southwest Virginia, as it does in its northern range. Eggs can be found consistently from late March through early December and may be produced sporadically later throughout the winter during warm periods. Two distinct generations were observed in the spring, after which life stage frequencies overlapped. Adult body size varied seasonally and was greatest in the spring. The present study constitutes the first recording of phenological details of the P. strobi in its southern range, informing biological control efforts aimed at closely related invasive pests. The phenological plasticity observed between northern and southern P. strobi populations provides insight into the potential effects of climate on the population dymanics of this and related species. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  20. Plant community and white-tailed deer nutritional carrying capacity response to intercropping switchgrass in loblolly pine plantations

    Science.gov (United States)

    Greene, Ethan Jacob

    Switchgrass (Panicum virgatum L.) is a cellulosic feedstock for alternative energy production that could grow well between planted pines (Pinus spp.). Southeastern planted pine occupies 15.8 million hectares and thus, switchgrass intercropping could affect biodiversity if broadly implemented. Therefore, I evaluated effects of intercropping switchgrass in loblolly pine (P. taeda L.) plantations on plant community diversity, plant biomass production, and white-tailed deer (Odocoileus virginianus Zimmerman) nutritional carrying capacity. In a randomized complete block design, I assigned three treatments (switchgrass intercropped, switchgrass monoculture, and a "control" of traditional pine management) to 4 replicates of 10-ha experimental units in Kemper County, Mississippi during 2014-2015. I detected 246 different plant species. Switchgrass intercropping reduced plant species richness and diversity but maintained evenness. I observed reduced forb and high-use deer forage biomass but only in intercropped alleys (interbeds). Soil micronutrient interactions affected forage protein of deer plants. White-tailed deer nutritional carrying capacity remained unaffected.

  1. Planting stress in newly planted jack pine and white spruce. 1. Factors influencing water uptake.

    Science.gov (United States)

    Grossnickle, S C

    1988-03-01

    Bareroot jack pine (Pinus banksiana Lamb.) seedlings (2 + 0) and bareroot white spruce (Picea glauca (Moench) Voss) transplants (1 1/2 + 1 1/2) were taken from cold storage and planted on a clearcut forest site in northeastern Ontario on several dates between May 6 and June 5 during which period soil temperature at 15 cm depth increased from 0 to 18 degrees C. Additional cold-stored trees were transferred to a greenhouse where they were grown in pots for 0, 7 or 28 days and then placed with their roots in aerated water maintained at one of a range of constant temperatures between 0 and 22 degrees C. In both species, daytime xylem pressure potentials (Psi(x)) and needle conductances (g(wv)) decreased with decreasing soil or water temperature. At all root temperatures, g(wv) was lower, and Psi(x) higher, in jack pine than in white spruce. After 28 days in the greenhouse, g(wv) of jack pine seedlings, and Psi(x) of white spruce, was higher than in plants just removed from cold storage. In both species, water-flow resistance through the soil-plant-atmosphere continuum (RSPAC) increased as root temperature decreased. At all root temperatures, RSPAC was higher in plants just removed from cold storage than in plants grown in the greenhouse for 28 days, during which time many new unsuberized roots were formed. At root temperatures above 10 degrees C, RSPAC of both species was higher in trees newly planted in mineral soil than in trees with roots in aerated water; presumably because the roots of planted trees had limited hydraulic contact with the soil. On the day following removal from cold storage, relative plant water flow resistance increased, in both species, more rapidly with declining root temperature than could be accounted for by the change with temperature in the viscosity of water, thus indicating an effect of temperature on root permeability. The same effect was evident in jack pine seedlings, but not white spruce transplants, that had been grown for 28 days in

  2. Radial growth and wood density of white pine in relation to fossil-fired power plant operations

    Science.gov (United States)

    W. T. Lawhon; F. W. Woods

    1976-01-01

    The objectives of this study were twofold: (1) to develop a gamma densitometry technique for measuring the relative wood density and radial growth of trees from 12 mm increment cores; and (2) to determine whether changes in the relative wood density and radial growth of "resistant" eastern white pine (Pinus strobus L.) occurred after...

  3. White pine blister rust in Korea, Japan and other Asian regions: comparisons and implications for North America

    Science.gov (United States)

    M.-S. Kim; N. B. Klopfenstein; Y. Ota; S. K. Lee; K.-S. Woo; S. Kaneko

    2010-01-01

    This article briefly reviews the history of white pine blister rust, attributed to Cronartium ribicola, and addresses current research and management issues in South Korea, Japan and other regions of eastern Asia (China, Russia and Himalaya). For each region, the distribution, damage, aecial hosts, telial hosts and management of C. ribicola and other blister rust fungi...

  4. The influence of silvicultural practices on genetic improvement: height growth and weevil resistance in eastern white pine

    Science.gov (United States)

    F. Thomas Ledig; D.M. Smith

    1981-01-01

    When grown in a common environment, the progeny of white pine (Pinus strobus L.) from weeviled stands improved by selection thinning outperformed the progeny of wolfy dominants from untreated stands in both height and weevil resistance. Within families, weevils tended to attack the tallest trees. Among families the relationship was not as strong and...

  5. Effects of thinning on aboveground carbon sequestration by a 45-year-old eastern white pine plantation: A case study

    Science.gov (United States)

    W. Henry McNab

    2012-01-01

    Aboveground carbon sequestration by a 45-year-old plantation of eastern white pines was determined in response to thinning to three levels of residual basal area: (1) Control (no thinning), (2) light thinning to 120 feet2/acre and (3) heavy thinning to 80 feet2/acre. After 11 years carbon stocks were lowest on the heavily...

  6. Efficacy of esfenvalerate for control of insects harmful to seed production in disease-resistant western white pines.

    Science.gov (United States)

    N.G. Rappaport; M.I. Haverty; P.J. Shea; R.E. Sandquist

    1994-01-01

    We tested the pyrethroid insecticide esfenvalerate in single, double, and triple applications for control of insects affecting seed production of blister rust-resistant western white pine, Pinus monticola Douglas. All treatments increased the proportion of normal seed produced and reduced the proportion of seed damaged by the western conifer seed...

  7. Internal and external control of net photosynthesis and stomatal conductance of mature eastern white pine (Pinus strobus)

    Science.gov (United States)

    Chris A. Maier; R.O. Teskey

    1992-01-01

    Leaf gas exchange and water relations were monitored in the upper canopy of two 25 m tall eastern white pine (Pinus strobus L.) trees over two consecutive growing seasons (1986 and 1987). Examination of the seasonal and diurnal patterns of net photosynthesis and leaf conductance showed that both internal and external (environmental) factors were...

  8. Spatial and temporal dynamics of bark beetles in Chinese white pine in Qinling Mountains of Shaanxi Province, China.

    Science.gov (United States)

    Chen, H; Tang, M

    2007-10-01

    Spatial and temporal dynamics of bark beetles in single tree trunks of Pinus armandi were studied in Qinling Mountains, Shaanxi Province, China. Ten species of engraver bark beetles attacked from healthy to withered Chinese white pines, but seven species were commonly detected every year in Qinling forest ecosystem. Dendroctonus armandi and Hylurgops longipilis were common species at the lower of trunks, and Ips acuminatus, Polygraphus sinensis, and Pityogenes japonicus primary distributed in the middle of trunks, whereas population densities of Cryphalus lipingensis and C. chinlingensis centralized at the upper trunks and branches of Chinese white pines. On the time series, D. armandi, as a dominant species in Chinese white pines of Qinling forest ecosystem, mainly attacked healthy and weakened trees and cooperated with blue stain fungus that resulted in the declining abruptly resistance and triggered the secondary bark beetles to attack the infected or withered host trees. Attacking and colonizing phenology of bark beetles in Qinling forest ecosystem are caused by complex interactions among spatial and trophic competition and cooperation and exhibit particular spatial and temporal patterns. Our results support the view that competition and cooperation within bark beetles are a critical factor to influence bark beetles spatial and temporal distribution, and stability of bark beetles' ecosystem, D. armandi, I. acuminatus, P. japonicus, P. sinensis, C. lipingensis, C. chinlingensis, and H. longipilis in Chinese white pine of Qinling forest ecosystem.

  9. Long-term monitoring of high-elevation white pine communities in Pacific West Region National Parks

    Science.gov (United States)

    Shawn T. McKinney; Tom Rodhouse; Les Chow; Penelope Latham; Daniel Sarr; Lisa Garrett; Linda Mutch

    2011-01-01

    National Park Service Inventory and Monitoring (I&M) networks conduct long-term monitoring to provide park managers information on the status and trends in key biological and environmental attributes (Vital Signs). Here we present an overview of a collaborative approach to long-term monitoring of high-elevation white pine forest dynamics among three Pacific West...

  10. Carbon and Water Exchanges in a Chronosequence of Temperate White Pine Forest

    Science.gov (United States)

    Arain, M.; Restrepo, N.; Pejam, M.; Khomik, M.

    2003-12-01

    Quantification of carbon sink or source strengths of temperate forest ecosystems, growing in northern mid-latitudes, is essential to resolve uncertainties in carbon balance of the world's terrestrial ecosystems. Long-term flux measurements are needed to quantify seasonal and annual variability of carbon and water exchanges from these ecosystems and to relate the variability to environmental and physiological factors. Such long-term measurements are of particular interest for different stand developmental stages. An understanding of environmental control factors is necessary to improve predictive capabilities of terrestrial carbon and water cycles. A long-term year-round measurement program has been initiated to observe energy, water vapour, and carbon dioxide fluxes in a chronosequence of white pine (Pinus Strobus) forests in southeastern Canada. White pine is an important species in the North American landscape because of its ability to adapt to dry environments. White pine efficiently grows on coarse and sandy soils, where other deciduous and conifer species cannot survive. Generally, it is the first woody species to flourish after disturbances such as fire and clearing. The climate at the study site is temperate, with a mean annual temperature of 8 degree C and a mean annual precipitation of about 800 mm. The growing season is one of the longest in Canada, with at least 150 frost-free days. Measurements at the site began in June 2002 and are continuing at present. Flux measurements at the 60 year old stand are being made using a close-path eddy covariance (EC) system, while fluxes at the three younger stands (30, 15 and 1 year old) are being measured over 10 to 20 day periods using a roving open-path EC system Soil respiration is being measured every 2-weeks across 50-m transects at all four sites using a mobile chamber system (LI-COR 6400). The mature stand was a sink of carbon with annual NEP value of 140 g C m-2 from June 2002 to May 2003. Gross ecosystem

  11. Effects of ozone and acid mist on foliar leaching from eastern white pine and sugar maple

    Energy Technology Data Exchange (ETDEWEB)

    Lovett, G.M.; Hubbell, J.G. (New York Botanical Garden, Millbrook, NY (USA))

    1991-01-01

    Upper canopy branches of mature eastern white pine and sugar maple were exposed in the field to ozone for 5 h, followed by acid mist for 1 h, and the exchange of major ions between the mist and the foliage was measured. The two species responded similarly to the pollutants: ozone exposure did not affect canopy exchange of any ions, but the pH 3.8 mist approximately doubled the leaching of Ca{sup 2+} and Mg{sup 2+} relative to the pH 5.0 mist. Hydrogen ions were released from the branches of both species in the pH 5.0 treatment but taken up from solution in the pH 3.8 treatment. Consideration of ionic balance in the chemical exchange indicates that organic acids were released from the branches of both species. In the white pine, it appears that these acids were deprotonated in the pH 5.0 solution, but not in the pH 3.8 solution. In the sugar maple, some acid deprotonation appears to have occurred under both pH treatments. In a related experiment, sugar maple branches that were moderately damaged by pear thrips did not have canopy exchange rates different from undamaged branches. Canopy exchange in the damaged branches did not respond to ozone treatment. Hydrogen ions were retained at pH 3.8 and released at pH 5.0, as in the undamaged branches. In the damaged branches, leaching of Ca(II) and Mg(II) tended to be higher at pH 3.8, although the results were not statistically significant. Overall, it is concluded that short-term ozone exposures that do not produce visible damage do not affect foliar leaching, but that the acidity of rain can have a significant effect on Ca(II), Mg(II) and H+ exchange in white pine and sugar maple canopies. The net effect of those canopies on the acidity of the rain passing through them will depend on the initial acidity of the rain. 29 refs., 5 figs., 2 tabs.

  12. Effects of Grosmannia clavigera and Leptographium longiclavatum on Western White Pine seedlings and the fungicidal activity of Alamo®, Arbotect®, and TREE-age®

    Science.gov (United States)

    Stephen A. Wyka; Joseph J. Doccola; Brian L. Strom; Sheri L. Smith; Douglas W. McPherson; Srdan G. Acimovic; Kier D. Klepzig

    2016-01-01

    Bark beetles carry a number of associated organisms that are transferred to the host tree upon attack that are thought to play a role in tree decline. To assess the pathogenicity to western white pine (WWP; Pinus monticola) of fungi carried by the mountain pine beetle (MPB; Dendroctonus ponderosae), and to evaluate the...

  13. Root Disease Incidence in Eastern White Pine Plantations With and Without Symptoms of Ozone Injury in the Coweeta Basin of North Carolina

    Science.gov (United States)

    Theodor D. Leininger; W.E. Winner; S.A. Alexander

    1990-01-01

    A survey was conducted in the Coweeta Basin, Macon County, North Carolina, to determine the incidence of root diseases and their relatedness to ozone symptomatology in two eastern white pine (Pinus strobes) plantations. Heterobasidion annosum was isolated from

  14. Micromorphology of epicuticular waxes and epistomatal chambers of pine species by electron microscopy and white light scanning interferometry.

    Science.gov (United States)

    Kim, Ki Woo; Lee, In Jung; Kim, Chang Soo; Lee, Don Koo; Park, Eun Woo

    2011-02-01

    High-resolution imaging and quantitative surface analysis of epicuticular waxes and epistomatal chambers of pine species were performed by field emission scanning electron microscopy and white light scanning interferometry. Both juvenile and adult needles were collected from the two-year-old seedlings of Pinus rigida and Pinus densiflora and subjected to surface observations. Epicuticular wax structures developed on the cuticle layer as well as in the epistomatal chambers and appeared to occlude the cavities in the two pine species. The stomata of P. densiflora were characterized by more distinctly raised rings around openings than P. rigida. The most common epicuticular wax structures of the two pine species included tubules with terminal openings and coiled rodlets. Wax platelets were deposited on epistomatal chambers. Either rodlets or tubules seemed to be longer and thicker in P. rigida than those in P. densiflora. White light scanning interferometry revealed quantitative surface profiles, demonstrating more ridged (ca. 4 μm high) stomatal apertures and nearly twofold deeper (ca. 20 μm deep) epistomatal chambers of P. densiflora than those of P. rigida. These results suggest that white light scanning interferometry can be applied to unravel the quantitative surface features of epicuticular sculptures on plant leaves.

  15. Sugar pine and its hybrids

    Science.gov (United States)

    W. B. Critchfield; B. B. Kinloch

    1986-01-01

    Unlike most white pines, sugar pine (Pinus lambertiana) is severely restricted in its ability to hybridize with other species. It has not been successfully crossed with any other North American white pine, nor with those Eurasian white pines it most closely resembles. Crosses with the dissimilar P. koraiensis and P....

  16. Complex response of white pines to past environmental variability increases understanding of future vulnerability.

    Science.gov (United States)

    Iglesias, Virginia; Krause, Teresa R; Whitlock, Cathy

    2015-01-01

    Ecological niche models predict plant responses to climate change by circumscribing species distributions within a multivariate environmental framework. Most projections based on modern bioclimatic correlations imply that high-elevation species are likely to be extirpated from their current ranges as a result of rising growing-season temperatures in the coming decades. Paleoecological data spanning the last 15,000 years from the Greater Yellowstone region describe the response of vegetation to past climate variability and suggest that white pines, a taxon of special concern in the region, have been surprisingly resilient to high summer temperature and fire activity in the past. Moreover, the fossil record suggests that winter conditions and biotic interactions have been critical limiting variables for high-elevation conifers in the past and will likely be so in the future. This long-term perspective offers insights on species responses to a broader range of climate and associated ecosystem changes than can be observed at present and should be part of resource management and conservation planning for the future.

  17. Complex response of white pines to past environmental variability increases understanding of future vulnerability.

    Directory of Open Access Journals (Sweden)

    Virginia Iglesias

    Full Text Available Ecological niche models predict plant responses to climate change by circumscribing species distributions within a multivariate environmental framework. Most projections based on modern bioclimatic correlations imply that high-elevation species are likely to be extirpated from their current ranges as a result of rising growing-season temperatures in the coming decades. Paleoecological data spanning the last 15,000 years from the Greater Yellowstone region describe the response of vegetation to past climate variability and suggest that white pines, a taxon of special concern in the region, have been surprisingly resilient to high summer temperature and fire activity in the past. Moreover, the fossil record suggests that winter conditions and biotic interactions have been critical limiting variables for high-elevation conifers in the past and will likely be so in the future. This long-term perspective offers insights on species responses to a broader range of climate and associated ecosystem changes than can be observed at present and should be part of resource management and conservation planning for the future.

  18. Pre-logging Treatment of Invasive Glossy Buckthorn (Frangula alnus Mill. Promotes Regeneration of Eastern White Pine (Pinus strobus L.

    Directory of Open Access Journals (Sweden)

    Thomas D. Lee

    2016-12-01

    Full Text Available Non-native glossy buckthorn (Frangula alnus Mill. is invasive in forests of the northeastern USA but little is known of its effects on tree regeneration. We tested whether killing buckthorn stems before logging reduces its post-logging abundance and increases the density and height of eastern white pine (Pinus strobus L. seedlings. Three 0.4 ha plots were clearcut, three were thinned, and three were left as controls. Each plot had previously been divided into three subplots that received different buckthorn treatments during the two years before logging. Buckthorn treatments were (1 stems cut at base five times; (2 stems cut once then heat killed four times; (3 untreated control. Three years post-logging, buckthorn density and stem height were unaffected by logging but equally reduced by the two buckthorn treatments. Buckthorn reduction increased density and height of pine seedlings, and seedling height also increased with logging. In the fifth year post-logging, pine height growth and biomass were greater in clearcut than in thinned treatments, greater in areas of buckthorn removal and, within treated subplots, greater in areas with low buckthorn density than in thickets of recovering buckthorn. Thus, although buckthorn inhibited regenerating pine, pre-logging destruction of buckthorn stems reduced such competition for at least four years.

  19. The magnificent high-elevation five-needle white pines: Ecological roles and future outlook

    Science.gov (United States)

    Diana F. Tomback; Peter Achuff; Anna W. Schoettle; John W. Schwandt; Ron J. Mastrogiuseppe

    2011-01-01

    The High Five symposium is devoted to exchanging information about a small group of pines with little commercial value but great importance to the ecology of high-mountain ecosystems of the West. These High Five pines include the subalpine and treeline species - whitebark (Pinus albicaulis), Rocky Mountain bristlecone (P. aristata), Great Basin bristlecone (P. longaeva...

  20. Behavioral and Reproductive Response of White Pine Weevil (Pissodes strobi to Resistant and Susceptible Sitka Spruce (Picea sitchensis

    Directory of Open Access Journals (Sweden)

    Jeanne A. Robert

    2010-08-01

    Full Text Available White pine weevil (Pissodes strobi, Peck. is a native forest insect pest in the Pacific Northwest of North America that attacks species of spruce (Picea spp. and pine (Pinus spp.. Young Sitka spruce [Picea sitchensis (Bong. Carr.] trees are particularly susceptible to weevil attack. Pockets of naturally occurring Sitka spruce resistance have been identified in high weevil hazard areas in coastal British Columbia. In this study, we characterize behavioral, physiological and reproductive responses of weevils to an extremely resistant Sitka spruce genotype (H898 in comparison to a highly susceptible genotype (Q903. The experiments relied on a large number of three-year-old clonally propagated trees and were therefore restricted to two contrasting Sitka spruce genotypes. When exposed to resistant trees, both male and female weevils were deterred during host selection and mating, females showed delayed or reduced ovary development, and successful reproduction of weevils was prevented on resistant trees.

  1. Mountain Pine Beetle

    Science.gov (United States)

    Gene D. Amman; Mark D. McGregor; Robert E. Jr. Dolph

    1989-01-01

    The mountain pine beetle, Dendroctonus ponderosae Hopkins, is a member of a group of beetles known as bark beetles: Except when adults emerge and attack new trees, the mountain pine beetle completes its life cycle under the bark. The beetle attacks and kills lodgepole, ponderosa, sugar, and western white pines. Outbreaks frequently develop in lodgepole pine stands that...

  2. Enhancing Stand Structure through Snag Creation in Northeastern U.S. Forests: Using Ethanol Injections and Bark Beetle Pheromones to Artificially Stress Red Maple and White Pine

    Directory of Open Access Journals (Sweden)

    Kevin J. Dodds

    2016-06-01

    Full Text Available We investigated two methods to create white pine and red maple snags in a forested setting. The first involved injecting trees with ethanol at two times (single Ethanol (ETOH and double ETOH injections to increase attractiveness to insects and elicit attacks on trees. The second method was unique to white pines and involved both injection treatments in combination with baiting trees with Ips-specific pheromones. Three of five white pines from the double ETOH treatment died in the second year. Species including Ips pini (Say, Ips grandicollis Eichhoff, Orthotomicus caelatus Eichhoff, Crypturgus borealis Swaine and Monochamus notatus (Drury responded more strongly to at least one of the treatments over control trees. However, there were no differences found in individual Scolytinae or Cerambycidae species response to treatments in red maple. Fitness (FV/FM and vitality (PIabs were both significantly reduced in both ETOH treatments compared to controls in white pine. In red maple, fitness was reduced in the double ETOH treated trees but the final mean FV/FM values were within the approximate optimal of health. Ethanol injections, in combination with Ips-specific semiochemicals, show promise for creating standing coarse woody debris (CWD in white pine. Injecting ethanol was not effective for stressing red maple.

  3. Single-Locus versus Multilocus Patterns of Local Adaptation to Climate in Eastern White Pine (Pinus strobus, Pinaceae.

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    Om P Rajora

    Full Text Available Natural plant populations are often adapted to their local climate and environmental conditions, and populations of forest trees offer some of the best examples of this pattern. However, little empirical work has focused on the relative contribution of single-locus versus multilocus effects to the genetic architecture of local adaptation in plants/forest trees. Here, we employ eastern white pine (Pinus strobus to test the hypothesis that it is the inter-genic effects that primarily drive climate-induced local adaptation. The genetic structure of 29 range-wide natural populations of eastern white pine was determined in relation to local climatic factors using both a reference set of SSR markers, and SNPs located in candidate genes putatively involved in adaptive response to climate. Comparisons were made between marker sets using standard single-locus outlier analysis, single-locus and multilocus environment association analyses and a novel implementation of Population Graphs. Magnitudes of population structure were similar between the two marker sets. Outlier loci consistent with diversifying selection were rare for both SNPs and SSRs. However, genetic distances based on the multilocus among population covariances (cGD were significantly more correlated to climate, even after correcting for spatial effects, for SNPs as compared to SSRs. Coalescent simulations confirmed that the differences in mutation rates between SSRs and SNPs did not affect the topologies of the Population Graphs, and hence values of cGD and their correlations with associated climate variables. We conclude that the multilocus covariances among populations primarily reflect adaptation to local climate and environment in eastern white pine. This result highlights the complexity of the genetic architecture of adaptive traits, as well as the need to consider multilocus effects in studies of local adaptation.

  4. Phylogeography of Pinus armandii and its relatives: heterogeneous contributions of geography and climate changes to the genetic differentiation and diversification of Chinese white pines.

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    Liu Liu

    Full Text Available Geographic barriers and Quaternary climate changes are two major forces driving the evolution, speciation, and genetic structuring of extant organisms. In this study, we used Pinus armandii and eleven other Asian white pines (subsection Strobus, subgenus Pinus to explore the influences of geographic factors and Pleistocene climatic oscillations on species in South China, a region known to be centers of plant endemism and biodiversity hotspots. Range-wide patterns of genetic variation were investigated using chloroplast and mitochondrial DNA markers, with extensive sampling throughout the entire range of P. armandii. Both cpDNA and mtDNA revealed that P. armandii exhibits high levels of genetic diversity and significant population differentiation. Three geographically distinct subdivisions corresponding to the Qinling-Daba Mountains (QDM, Himalaya-Hengduan Mountains (HHM and Yungui Plateau (YGP were revealed in mainland China by cpDNA. Their break zone was located in the southeastern margin of the Qinghai-Tibetan Plateau (QTP. A series of massive mountains, induced by the QTP uplift, imposed significant geographic barriers to genetic exchange. The disjunct distribution patterns of ancestral haplotypes suggest that a large continuous population of the white pines may have existed from southwest to subtropical China. Repeated range shifts in response to the Pleistocene glaciations led to the isolation and diversification of the subtropical species. The two Taiwanese white pines share a common ancestor with the species in mainland China and obtain their chloroplasts via long-distance pollen dispersal from North Asian pines. Distinct genetic patterns were detected in populations from the Qinling-Daba Mountains, Yungui Plateau, Himalaya-Hengduan Mountains, and subtropical China, indicating significant contributions of geographic factors to the genetic differentiation in white pines. Our study depicts a clear picture of the evolutionary history of

  5. Growth of mycorrhizal jack pine (Pinus banksiana) and white spruce (Picea glauca) seedlings planted in oil sands reclaimed areas.

    Science.gov (United States)

    Onwuchekwa, Nnenna E; Zwiazek, Janusz J; Quoreshi, Ali; Khasa, Damase P

    2014-08-01

    The effectiveness of ectomycorrhizal inoculation at the tree nursery seedling production stage on growth and survival was examined in jack pine (Pinus banksiana) and white spruce (Picea glauca) planted in oil sands reclamation sites. The seedlings were inoculated with Hebeloma crustuliniforme strain # UAMH 5247, Suillus tomentosus strain # UAMH 6252, and Laccaria bicolor strain # UAMH 8232, as individual pure cultures and in combinations. These treatments were demonstrated to improve salinity resistance and water uptake in conifer seedlings. The field responses of seedlings to ectomycorrhizal inoculation varied between plant species, inoculation treatments, and measured parameters. Seedling inoculation resulted in higher ectomycorrhizal colonization rates compared with non-inoculated control, which had also a relatively small proportion of roots colonized by the nursery contaminant fungi identified as Amphinema byssoides and Thelephora americana. Seedling inoculation had overall a greater effect on relative height growth rates, dry biomass, and stem volumes in jack pine compared with white spruce. However, when examined after two growing seasons, inoculated white spruce seedlings showed up to 75% higher survival rates than non-inoculated controls. The persistence of inoculated fungi in roots of planted seedlings was examined at the end of the second growing season. Although the inoculation with H. crustuliniforme triggered growth responses, the fungus was not found in the roots of seedlings at the end of the second growing season suggesting a possibility that the observed growth-promoting effect of H. crustuliniforme may be transient. The results suggest that the inoculation of conifer seedlings with ectomycorrhizal fungi could potentially be carried out on a large scale in tree nurseries to benefit postplanting performance in oil sands reclamation sites. However, these practices should take into consideration the differences in responses between the different

  6. Evaluation of the Competitive Environment for White Pine (Pinus strobus L.) Seedlings Planted on Prescribed Burn Sites in the Southern Appalachians

    Science.gov (United States)

    Katherine J. Elliott; James M. Vose

    1995-01-01

    We evaluated the competitive environment around planted white pine (Pinus strobus L.) seedlings and monitored the response of seedling growth to competition from naturally regenerating herbaceous and woody species for 2 yr after prescribed burning. We evaluated the bility of distance-independent and distance-dependent competition indices to predict resource...

  7. Synoptic climatology of the long-distance dispersal of white pine blister rust II. Combination of surface and upper level conditions

    Science.gov (United States)

    K. L. Frank; B. W. Geils; L. S. Kalkstein; H. W. Thistle

    2008-01-01

    An invasive forest pathogen, Cronartium ribicola, white pine blister rust (WPBR), is believed to have arrived in the Sacramento Mountains of south-central New Mexico about 1970. Epidemiological and genetic evidence supports the hypothesis that introduction was the result of long-distance dispersal (LDD) by atmospheric transport from California. This...

  8. Differences in the Structure of the Gut Bacteria Communities in Development Stages of the Chinese White Pine Beetle (Dendroctonus armandi

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    Junning Ma

    2013-10-01

    Full Text Available The Chinese white pine beetle Dendroctonus armandi Tsai and Li, is arguably the most destructive forest insect in the Qinling Mountains in Northern China. Little is known about the structure of the bacterial communities associated with D. armandi even though this wood-boring insect plays important roles in ecosystem and biological invasion processes that result in huge economic losses in pine forests. The aim of this study was to investigate the composition of the bacterial communities present in the guts of D. armandi at different developmental stages using a culture-independent method involving PCR-denaturing gradient gel electrophoresis (DGGE. Analysis of PCR-amplified 16S rRNA gene fragments of bacteria from the guts of larvae, pupae, and male and female adults revealed bacterial communities of low complexity that differed according to the developmental stage. Citrobacter spp. and Pantoea spp. predominated in larvae and adults, whereas Methylobacterium was the dominant genus at the pupal stage. The main difference between the guts of male and female adults was the greater dominance of Citrobacter in females. Previous studies suggest that the bacterial community associated with D. armandi guts may influence insect development. The data obtained in this study regarding the phylogenetic relationships and the community structure of intestinal bacteria at different developmental stages of the D. armandi life cycle contribute to our understanding of D. armandi and could aid the development of new pest control strategies.

  9. Breakdown of major gene resistance to white pine blister rust in sugar pine at Mountain Home Demonstration State Forest: what are the implications?

    Science.gov (United States)

    Jr. Bohun B. Kinloch

    1996-01-01

    A virulent race of blister rust capable of neutralizing major gene resistance (MGR) in sugar pine made its first appearance nearly two decades ago at a test plantation of resistant sugar pines near Happy Camp, in northern California. Until this year (1996), it had not been found outside the very close neighborhood of this site. Its discovery last summer at Mountain...

  10. Promotion of cone production on field-grown grafts of eastern white pine by gibberellin a4/7 injection. Forest research report No. 138

    Energy Technology Data Exchange (ETDEWEB)

    Ho, R.H.

    1996-11-01

    Because of the periodicity, fecundity, and asynchronsation in white pine pollen- and seed-cone production, methods need to be developed to produce both pollen and seed cones, thereby shortening the breeding cycle in advanced generation breeding. This paper presents a study designed to examine previous research on gibberellin treatments for pollen-cone production. Experiments were conducted on a breeding orchard of eastern white pine in Ontario, using clones of 6- or 11-year-old grafts in each of three treatment periods (May-June, June-August, and August-September 1994). Data were collected the following year when pollen and seed cones had emerged from the bud scales. Results presented include comparison of pollen cone and seed cone production between treated and untreated control grafts, and the differences in production among the three treatment periods.

  11. Emergence of white pine needle damage in the northeastern United States is associated with changes in pathogen pressure in response to climate change.

    Science.gov (United States)

    Wyka, Stephen A; Smith, Cheryl; Munck, Isabel A; Rock, Barrett N; Ziniti, Beth L; Broders, Kirk

    2017-01-01

    The defoliation of the eastern white pine (Pinus strobus) across the northeastern United States is an escalating concern threatening the ecological health of northern forests and economic vitality of the region's lumber industry. First documented in the spring of 2010 affecting 24 328 hectares in the state of Maine, white pine needle damage (WPND) has continued to spread and is now well established in all New England states. While causal agents of WPND are known, current research is lacking in both sampling distribution and the specific environmental factor(s) that affect the development and spread of this disease complex. This study aims to construct a more detailed distribution map of the four primary causal agents within the region, as well as utilize long-term WPND monitoring plots and data collected from land-based weather stations to develop a climatic model to predict the severity of defoliation events in the proceeding year. Sampling results showed a greater distribution of WPND than previously reported. WPND was generally found in forest stands that compromised >50% eastern white pine by basal area. No single species, nor a specific combination of species had a dominating presence in particular states or regions, thus supporting the disease complex theory that WPND is neither caused by an individual species nor by a specific combination of species. In addition, regional weather data confirmed the trend of increasing temperature and precipitation observed in this region with the previous year's May, June, and July rainfall being the best predictor of defoliation events in the following year. Climatic models were developed to aid land managers in predicting disease severity and accordingly adjust their management decisions. Our results clearly demonstrate the role changing climate patterns have on the health of eastern white pine in the northeastern United States. © 2016 John Wiley & Sons Ltd.

  12. Pinus Densiflora Bark Extract (PineXol) Decreases Adiposity in Mice by Down-Regulation of Hepatic De Novo Lipogenesis and Adipogenesis in White Adipose Tissue.

    Science.gov (United States)

    Ahn, Hyemyoung; Go, Gwang-Woong

    2017-04-28

    PineXol, extracted from Korean red pine bark, has beneficial effects, such as antioxidant, antiinflammatory, and antilipogenic activities in vitro. We tested the hypothesis that PineXol supplementation could have anti-obesity effects on mice fed a high-fat diet (HFD). Four-week-old male C57BL/6 mice were fed normal chow (18% kcal from fat) or a HFD (60% kcal from fat). HFD-fed animals were also subjected to PineXol treatment at a dose of 10 or 50 mg/kg body weight (BW) (PX10 or PX50, respectively) body weight. The body weight and body fat mass in the PX50 group were statistically lower than those in the HFD group (p < 0.05 and p < 0.001, respectively). The concentration of hepatic triglycerides, total cholesterol, and low-density lipoprotein cholesterol were reduced in the PX50 group compared with the HFD group (p < 0.01). Acetyl CoA carboxylase (p < 0.01), elongase of very long chain fatty acids 6 (p < 0.01), stearoyl CoA desaturase 1 (p < 0.05), microsomal triglyceride transfer protein (p < 0.01), and sterol regulatory element-binding protein 1 (p < 0.05) were significantly decreased in the PX50 group compared with that in the HFD group. In white adipose tissue, CCAATenhancer-binding protein alpha (p < 0.05), peroxisome proliferator-activated receptor gamma (p < 0.001), and perilipin (p < 0.01) were decreased in the PX50 group compared with those in the HFD group. Therefore, the current study implies the potential of PineXol for the prevention and/or amelioration of obesity, in part by inhibition of both hepatic lipid synthesis and adipogenesis in white adipose tissue.

  13. Biosorption mechanism of Methylene Blue from aqueous solution onto White Pine (Pinus durangensis sawdust: Effect of operating conditions

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    Jacob J. Salazar-Rabago

    2017-01-01

    Full Text Available In this work, the biosorption mechanism of the cationic dye Methylene Blue (MB on natural White Pine sawdust (NS (Pinus durangensis was investigated. Likewise, the surface charge distribution of NS was determined, and its point of zero charge was found to be 4.3. Besides, the capacity of the NS for adsorbing MB was increased 1.7, 2.0 and 4.6 times when the pH was raised from 3 to 4.25, 3 to 7 and 3 to 10, respectively. This behavior was attributed to the electrostatic attraction between the negatively charged surface of NS and the cationic species MB+. The adsorption capacity increased with increased temperature because the adsorption was an endothermic process. The adsorption capacity was drastically reduced by increasing the ionic strength of the solution corroborating with the fact that the electrostatic attractions played a crucial role in the adsorption of MB on NS. It was also shown that the MB was chemisorbed because the adsorption was not reversible. The predominant adsorption mechanisms were the electrostatic attraction and chemisorption and not ion exchange.

  14. Effect of white light irradiation on the endogenous growth regulators content in seeds and seedlings of pine (Pinus silvestris L.

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    J. Kopcewicz

    2015-01-01

    Full Text Available The increase of gibberellin content and decrease of amount of inhibitors in light irradiated pine seedlings were found. It was also stated that stimulating effect of light on pine seeds germination is correlated with the increase of gibberellin and simultaneous decrease of the inhibitor content. The inhibitor isolated from pine seeds proved to be a compound similar in some properties to abscisic acid.

  15. Histological observations on needle colonization by Cronartium ribicola in susceptible and resistant seedlings of whitebark pine and limber pine

    Science.gov (United States)

    Jeffrey Stone; Anna Schoettle; Richard Sniezko; Angelia Kegley

    2011-01-01

    Resistance to white pine blister rust based on a hypersensitive response (HR) that is conferred by a dominant gene has been identified as functioning in needles of blister rust-resistant families of sugar pine, western white pine and southwestern white pine. The typical HR response displays a characteristic local necrosis at the site of infection in the needles during...

  16. Peroxidase and catalase activities are involved in direct adventitious shoot formation induced by thidiazuron in eastern white pine (Pinus strobus L.) zygotic embryos.

    Science.gov (United States)

    Tang, Wei; Newton, Ronald J

    2005-08-01

    We reported establishment of an efficient plant regeneration procedure through direct adventitious shoot (DAS) formation from cotyledons and hypocotyls of eastern white pine (Pinus strobus L.) mature embryos in this investigation. Multiple DASs were initiated from cotyledons of embryos on PS medium containing N6-benzyladenine (BA), thidiazuron (TDZ), or kinetin (KIN). Among different concentrations of casein enzymatic hydrosylate (CH) and glutamine used in this study, 500 mg l(-1) CH or 600 mg l(-1) glutamine induced the highest frequency of DAS formation. Rooting of regenerated shoots was obtained on PS medium supplemented with 0.01-0.1 microM indole-3-acetic acid (IAA) with the highest frequency on medium containing 0.01 muM IAA. No DASs were obtained on medium without TDZ. Measurement of peroxidase (POD) and catalase (CAT) activity during direct shoot induction and differentiation demonstrated that the lowest POD activity appeared in the 5-6th week of culture and lowest CAT activity occurred in the 7-8th week of culture on medium with TDZ. No such a change in POD and CAT activities was observed on medium without TDZ. These results demonstrated that POD and CAT activities were involved in DAS formation induced by TDZ in eastern white pine.

  17. Shading aboveground L-joint and lap-joint tests : comparison of white pine and sugar maple test assemblies

    Science.gov (United States)

    Carol A. Clausen; Daniel L. Lindner

    2011-01-01

    Five-year performance ratings are presented for two types of untreated, uncoated wood joints (L and lap) in aboveground tests under shaded conditions. The effect of shading on moisture entrapment in pine and maple L and lap joints was evaluated in a moderate decay zone (Madison, Wisconsin). Variations were observed between wood species, visual ratings, joint type,...

  18. Avian Assemblages Differ between Old-Growth and Mature White Pine Forests of Ontario, Canada: A Role for Supercanopy Trees?

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    David Anthony. Kirk

    2012-06-01

    Full Text Available We predicted that bird diversity and abundance of some bird species would be higher in old-growth stands than in mature pine stands because of the greater structural diversity in old growth. We also predicted that patch size of stands should be influential. To test these predictions, we modeled counts of 79 bird species from 52 stands in 5 regions in the province of Ontario, Canada in relation to habitat at the local and landscape extents. Neither total species richness nor abundance differed between stand types. No significant difference was found in bird assemblages between stand types using ordination analysis. However, more Neotropical migrants were found in old-growth stands than in mature stands, while the reverse was true for short-distance migrants. Twenty-five species had higher counts in old-growth stands - three significantly so: Brown Creeper Certhia americana, Northern Parula Setophaga americana, and Scarlet Tanager Piranga olivacea. Supercanopy pine (> 60 cm dbh was a significant (P 40 cm/dbh was a significant positive predictor for Brown Creeper, Pine Warbler Setophaga pinus, and total species richness. The density of supercanopy and medium/large pine explained a small but significant amount of variation in bird assemblages (1%, after considering age, other tree variables (9%, and landscape metrics. Patch size was significant for Evening Grosbeak Coccothraustes vespertinus and total abundance. According to receiver operating characteristic (ROC thresholds, Brown Creeper required a minimum of 62 stems/ha of medium/large pine. Pileated Woodpecker Dryocopus pileatus and Black-throated Green Warbler required a minimum of 14 and 23 stems/ha of supercanopy pine, respectively. Blackburnian Warbler Setophaga fusca required a minimum stand age of 66 years. Current targets in shelterwood seed cuts for pine appear to be just within range for Brown Creeper - at least for the first cut, but not for subsequent cuts. We recommend that forest

  19. Contrasting the effects of organic matter removal and soil compaction on root biomass of 9-year-old red oak, white oak, and shortleaf pine in a Missouri Ozark forest

    Science.gov (United States)

    Felix Jr. Ponder

    2011-01-01

    Nine-year old artificially regenerated red oak (Quercus rubra L.), white oak (Q. alba L.), and shortleaf pine (Pinus echinata Mill.) trees were excavated from plot borders of a U.S. Forest Service long-term soil productivity study in the Carr Creek State Forest near Ellington, MO, to quantify treatment effects on...

  20. Genetic divergence and signatures of natural selection in marginal populations of a keystone, long-lived conifer, Eastern White Pine (Pinus strobus) from Northern Ontario.

    Science.gov (United States)

    Chhatre, Vikram E; Rajora, Om P

    2014-01-01

    Marginal populations are expected to provide the frontiers for adaptation, evolution and range shifts of plant species under the anticipated climate change conditions. Marginal populations are predicted to show genetic divergence from central populations due to their isolation, and divergent natural selection and genetic drift operating therein. Marginal populations are also expected to have lower genetic diversity and effective population size (Ne) and higher genetic differentiation than central populations. We tested these hypotheses using eastern white pine (Pinus strobus) as a model for keystone, long-lived widely-distributed plants. All 614 eastern white pine trees, in a complete census of two populations each of marginal old-growth, central old-growth, and central second-growth, were genotyped at 11 microsatellite loci. The central populations had significantly higher allelic and genotypic diversity, latent genetic potential (LGP) and Ne than the marginal populations. However, heterozygosity and fixation index were similar between them. The marginal populations were genetically diverged from the central populations. Model testing suggested predominant north to south gene flow in the study area with curtailed gene flow to northern marginal populations. Signatures of natural selection were detected at three loci in the marginal populations; two showing divergent selection with directional change in allele frequencies, and one balancing selection. Contrary to the general belief, no significant differences were observed in genetic diversity, differentiation, LGP, and Ne between old-growth and second-growth populations. Our study provides information on the dynamics of migration, genetic drift and selection in central versus marginal populations of a keystone long-lived plant species and has broad evolutionary, conservation and adaptation significance.

  1. Crossing the western pines at Placerville, California

    Science.gov (United States)

    W. B. Critchfield; S. L. Krugman

    1967-01-01

    The results of hybridizing the western pine species by the Institute of Forest Genetics are described and discussed. It has been found that the hard, (yellow) pines can generally be crossed successfully only with similar species native to the same part of the world. In contrast, the soft (white) pines of the Western Hemisphere have been crossed successfully with soft...

  2. Relationship of Herd Density and Physical Parameters of White-tailed Deer in Northwest Florida Pine Flatwoods

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — A study assessing the effects of changes in deer density on physical parameters of deer in northwest Florida flatwoods. Biological data from white-tailed deer...

  3. Western yellow pine in Arizona and New Mexico

    Science.gov (United States)

    Theodore S. Woolsey

    1911-01-01

    Western yellow pine is to the Southwest what white pine is to the Northeast, or longleaf pine to the Southeast. The commercial forests of Arizona and New Mexico are three-fourths western yellow pine, which furnishes by far the greater part of the lumber used locally as well as that shipped to outside markets. To describe the characteristics of the species and to...

  4. Regeneration of Rocky Mountain bristlecone pine (Pinus aristata) and limber pine (Pinus flexilis) three decades after stand-replacing fires

    Science.gov (United States)

    Jonathan D. Coop; Anna W. Schoettle

    2009-01-01

    Rocky Mountain bristlecone pine (Pinus aristata) and limber pine (Pinus flexilis) are important highelevation pines of the southern Rockies that are forecast to decline due to the recent spread of white pine blister rust (Cronartium ribicola) into this region. Proactive management strategies to promote the evolution of rust resistance and maintain ecosystem function...

  5. Dynamics of whlte pine in New England

    Science.gov (United States)

    William B. Leak; J.B. Cullen; Thomas S. Frieswyk

    1995-01-01

    Analysis of growth, regeneration, and quality changes for white pine between the 1970's and 1980's in the six-state New England region. Growth rates seemed comparable among ail states except Rhode Island, where the percentage of growth (1.71%) seemed low. Over all states, the proportion of acreage in seedling/sapling white pine stands averaged too low (8%) to...

  6. Whitebark and limber pine restoration and monitoring in Glacier National Park

    Science.gov (United States)

    Jennifer M. Asebrook; Joyce Lapp; Tara. Carolin

    2011-01-01

    Whitebark pine (Pinus albicaulis) and limber pine (Pinus flexilis) are keystone species important to watersheds, grizzly and black bears, squirrels, birds, and other wildlife. Both high elevation five-needled pines have dramatically declined in Glacier National Park primarily due to white pine blister rust (Cronartium ribicola) and fire exclusion, with mountain pine...

  7. Threats, status & management options for bristlecone pines and limber pines in Southern Rockies

    Science.gov (United States)

    A. W. Schoettle; K. S. Burns; F. Freeman; R. A. Sniezko

    2006-01-01

    High-elevation white pines define the most remote alpine-forest ecotones in western North America yet they are not beyond the reach of a lethal non-native pathogen. The pathogen (Cronartium ribicola), a native to Asia, causes the disease white pine blister rust (WPBR) and was introduced into western Canada in 1910. Whitebark (Pinus albicaulis) and...

  8. MicroRNAs, polyamines, and the activities antioxidant enzymes are associated with in vitro rooting in white pine (Pinus strobus L.).

    Science.gov (United States)

    Fei, Yunjun; Xiao, Bo; Yang, Man; Ding, Qiong; Tang, Wei

    2016-01-01

    Molecular mechanism of in vitro rooting in conifer is not fully understood. After establishment of a regeneration procedure in eastern white pine (Pinus strobus L.) using mature embryos as explants to induce shoot formation on medium containing 3 μM IAA, 6 μM BA and 6 μM TDZ and induce root formation on medium containing 0.001-0.05 μM IAA, 0.001-0.05 μM IBA, 0.001-0.05 μM TDZ, we have investigated the changes of polyamine content and the activities of antioxidant enzymes during in vitro rooting in P. strobus. Our results demonstrated that putrescine (Put), spermidine (Spd), and spermine (Spm) did not increase in P. strobus during the first week of rooting on medium supplemented with 0.01 μM indole-3-acetic acid (IAA), whereas the levels of Put, Spd, and Spm increased during the 1st-3rd week of culture on medium with IAA, and then decreased on medium with IAA. No such a change in Put, Spd, and Spm was observed on medium without IAA. Measurement of antioxidant enzyme activity demonstrated that the activities of polyphenol oxidase, catalase, and peroxidase slightly increased in the first week of culture and reached to the highest peak in the 3rd-5th week of culture. Quantitative RT-PCR results indicated that miR160 was increased on the 7th day, miR162, miR397, and miR408 was increased from the 21th to 35th day, miR857 was increased on the 35th day, and miR827 was increased on the 49th day. These results demonstrated that enhanced polyamine biosynthesis, antioxidant enzyme activity, and microRNAs are correlated with the root induction and formation in P. strobus.

  9. Natural regeneration of whitebark pine: Factors affecting seedling density

    Science.gov (United States)

    S. Goeking; D. Izlar

    2014-01-01

    Whitebark pine (Pinus albicaulis) is an ecologically important species in high-altitude areas of the western United States and Canada due to the habitat and food source it provides for Clark’s nutcrackers, red squirrels, grizzly bears, and other animals. Whitebark pine stands have recently experienced high mortality due to wildfire, white pine blister rust, and a...

  10. Many ways to manage lodgepole pine forests

    Science.gov (United States)

    Lucia Solorzano

    1997-01-01

    Research underway at the Tenderfoot Creek Experimental Forest near White Sulphur Springs will provide insights on how to sustain lodgepole pine forests and water flow patterns over large areas. Lodgepole pine dominates a high percentage of forests in the northern Rocky Mountains. including the Bitterroot National Forest. About half the stands at Tenderfoot are two-aged...

  11. Sequence of the Sugar Pine Megagenome

    Science.gov (United States)

    Kristian A. Stevens; Jill L. Wegrzyn; Aleksey Zimin; Daniela Puiu; Marc Crepeau; Charis Cardeno; Robin Paul; Daniel Gonzalez-Ibeas; Maxim Koriabine; Ann E. Holtz-Morris; Pedro J. Martínez-García; Uzay U. Sezen; Guillaume Marçais; Kathie Jermstad; Patrick E. McGuire; Carol A. Loopstra; John M. Davis; Andrew Eckert; Pieter de Jong; James A. Yorke; Steven L. Salzberg; David B. Neale; Charles H. Langley

    2016-01-01

    Until very recently, complete characterization of the megagenomes of conifers has remained elusive. The diploid genome of sugar pine (Pinus lambertiana Dougl.) has a highly repetitive, 31 billion bp genome. It is the largest genome sequenced and assembled to date, and the first from the subgenus Strobus, or white pines, a group...

  12. Restoration planting options for limber pines in the southern Rocky Mountains

    Science.gov (United States)

    Anne Marie Casper; William R. Jacobi; Anna W. Schoettle; Kelly S. Burns

    2011-01-01

    Limber Pine (Pinus flexilis) populations in the southern Rocky Mountains are severely threatened by the combined impacts of mountain pine beetles and white pine blister rust. Limber pine's critical role in these high elevation ecosystems heightens the importance of mitigating these impacts.

  13. Native ectomycorrhizal fungi of limber and whitebark pine: Necessary for forest sustainability?

    Science.gov (United States)

    Cathy L. Cripps; Robert K. Antibus

    2011-01-01

    Ectomycorrhizal fungi are an important component of northern coniferous forests, including those of Pinus flexilis (limber pine) and P. albicaulis (whitebark pine) which are being decimated by white pine blister rust and mountain pine beetles. Ectomycorrhizal fungi are known to promote seedling establishment, tree health, and may play a role in forest sustainability....

  14. Cone and seed yields in white spruce seed production areas

    Science.gov (United States)

    John A. Pitcher

    1966-01-01

    The source of seed is an important consideration in the reforestation program on the National Forests in the North Central Region. Thirty-five seed production areas have been set up in the Region, along the lines proposed by the North Central Forest Experiment Station, to provide control of seed source. Red pine, white pine, shortleaf and loblolly pine, and white...

  15. European Pine Shoot Moth

    Science.gov (United States)

    William E. Miller; Arthur R. Hastings; John F. Wootten

    1961-01-01

    In the United States, the European pine shoot moth has caused much damage in young, plantations of red pine. It has been responsible for reduced planting of red pine in many areas. Although attacked trees rarely if ever die, their growth is inhibited and many are, deformed. Scotch pine and Austrian pine (Pinus nigra Arnold) are usually not so badly damaged. Swiss...

  16. Pre-dispersal seed predator dynamics at the northern limits of limber pine distribution

    Science.gov (United States)

    Vernon S. Peters

    2011-01-01

    Limber pine (Pinus flexilis) is listed provincially as endangered in the northern part of its geographic range (Alberta) due to the high mortality caused by white pine blister rust (WPBR) (Cronartium ribicola) and mountain pine beetle (Dendroctonus ponderosae), and limited regeneration opportunities due to fire exclusion. In the case of an endangered species, seed...

  17. Distribution of bark beetle attacks after whitebark pine restoration treatments: A case study

    Science.gov (United States)

    Kristen M. Waring; Diana L. Six

    2005-01-01

    Whitebark pine (Pinus albicaulis Engelm.), an important component of high elevation ecosystems in the western United States and Canada, is declining due to fire exclusion, white pine blister rust (Cronartium ribicola J.C. Fisch.), and mountain pine beetle (Dendroctonus ponderosae Hopkins). This study was...

  18. Evaluating future success of whitebark pine ecosystem restoration under climate change using simulation modeling

    Science.gov (United States)

    Robert E. Keane; Lisa M. Holsinger; Mary F. Mahalovich; Diana F. Tomback

    2017-01-01

    Major declines of whitebark pine forests throughout western North America from the combined effects of mountain pine beetle (Dendroctonus ponderosae) outbreaks, fire exclusion policies, and the exotic disease white pine blister rust (WPBR) have spurred many restoration actions. However, projected future warming and drying may further exacerbate the species’ decline and...

  19. Tracking the footsteps of an invasive plant pathogen: Intercontinental phylogeographic structure of the white-pine-blister-rust fungus, Cronartium ribicola

    Science.gov (United States)

    Bryce A. Richardson; Mee-Sook Kim; Ned B. Klopfenstein; Yuko Ota; Kwan Soo Woo; Richard C. Hamelin

    2009-01-01

    Presently, little is known about the worldwide genetic structure, diversity, or evolutionary relationships of the white-pineblister-rust fungus, Cronartium ribicola. A collaborative international effort is underway to determine the phylogeographic relationships among Asian, European, and North American sources of C. ribicola and...

  20. Blister rust resistance among 19 families of whitebark pine, Pinus albicaulis, from Oregon and Washington – early results from an artificial inoculation trial

    Science.gov (United States)

    Angelia Kegley; Richard A. Sniezko; Robert Danchok; Douglas P. Savin

    2012-01-01

    Whitebark pine is considered one of the most susceptible white pine species to white pine blister rust, the disease caused by the non-native pathogen Cronartium ribicola. High mortality from blister rust and other factors in much of the range in the United States and Canada have raised serious concerns about the future viability of this high-...

  1. Insect-Induced Conifer Defense. White Pine Weevil and Methyl Jasmonate Induce Traumatic Resinosis, de Novo Formed Volatile Emissions, and Accumulation of Terpenoid Synthase and Putative Octadecanoid Pathway Transcripts in Sitka Spruce1[w

    Science.gov (United States)

    Miller, Barbara; Madilao, Lufiani L.; Ralph, Steven; Bohlmann, Jörg

    2005-01-01

    Stem-boring insects and methyl jasmonate (MeJA) are thought to induce similar complex chemical and anatomical defenses in conifers. To compare insect- and MeJA-induced terpenoid responses, we analyzed traumatic oleoresin mixtures, emissions of terpenoid volatiles, and expression of terpenoid synthase (TPS) genes in Sitka spruce (Picea sitchensis) following attack by white pine weevils (Pissodes strobi) or application of MeJA. Both insects and MeJA caused traumatic resin accumulation in stems, with more accumulation induced by the weevils. Weevil-induced terpenoid emission profiles were also more complex than emissions induced by MeJA. Weevil feeding caused a rapid release of a blend of monoterpene olefins, presumably by passive evaporation of resin compounds from stem feeding sites. These compounds were not found in MeJA-induced emissions. Both weevils and MeJA caused delayed, diurnal emissions of (−)-linalool, indicating induced de novo biosynthesis of this compound. TPS transcripts strongly increased in stems upon insect attack or MeJA treatment. Time courses and intensity of induced TPS transcripts were different for monoterpene synthases, sesquiterpene synthases, and diterpene synthases. Increased levels of weevil- and MeJA-induced TPS transcripts accompanied major changes in terpenoid accumulation in stems. Induced TPS expression profiles in needles were less complex than those in stems and matched induced de novo emissions of (−)-linalool. Overall, weevils and MeJA induced similar, but not identical, terpenoid defense responses in Sitka spruce. Findings of insect- and MeJA-induced accumulation of allene oxide synthase-like and allene oxide cyclase-like transcripts are discussed in the context of traumatic resinosis and induced volatile emissions in this gymnosperm system. PMID:15618433

  2. The proactive strategy for sustaining five-needle pine populations: An example of its implementation in the southern Rocky Mountains

    Science.gov (United States)

    A. W. Schoettle; B. A. Goodrich; J. G. Klutsch; K. S. Burns; S. Costello; R. A. Sniezko

    2011-01-01

    The imminent invasion of the non-native fungus, Cronartium ribicola J.C. Fisch., that causes white pine blister rust (WPBR) and the current mountain pine beetle (Dendroctonus ponderosae Hopkins, MPB) epidemic in northern Colorado limber pine forests will severely affect the forest regeneration cycle necessary for functioning ecosystems. The slow growth and maturity of...

  3. Community structure, biodiversity, and ecosystem services in treeline whitebark pine communities: Potential impacts from a non-native pathogen

    Science.gov (United States)

    Diana F. Tomback; Lynn M. Resler; Robert E. Keane; Elizabeth R. Pansing; Andrew J. Andrade; Aaron C. Wagner

    2016-01-01

    Whitebark pine (Pinus albicaulis) has the largest and most northerly distribution of any white pine (Subgenus Strobus) in North America, encompassing 18° latitude and 21° longitude in western mountains. Within this broad range, however, whitebark pine occurs within a narrow elevational zone, including upper subalpine and treeline forests, and functions...

  4. Southwestern Pine Tip Moth

    Science.gov (United States)

    Daniel T. Jennings; Robert E. Stevens

    1982-01-01

    The southwestern pine tip moth, Rhyacionia neomexicana (Dyar), injures young ponderosa pines (Pinus ponderosa Dougl. ex Laws) in the Southwest, central Rockies, and midwestern plains. Larvae feed on and destroy new, expanding shoots, often seriously reducing terminal growth of both naturally regenerated and planted pines. The tip moth is especially damaging to trees on...

  5. Sawlog grades for eastern white pine

    Science.gov (United States)

    Myron D. Ostrander; Robert L. Brisbin; Robert L. Brisbin

    1971-01-01

    In 1957, the USDA Forest Service Log Grade Committee recommended a service-wide action program in log- and tree-grade research. Approval of the program in 1958 resulted in the establishment of five species-oriented timber-quality research projects covering several groups of commercially important timber species. The eastern softwood timber-quality project was activated...

  6. Health, reproduction, and fuels in whitebark pine in the Frank Church River of No Return Wilderness Area in central Idaho (Project INT-F-05-02)

    Science.gov (United States)

    Lauren Fins; Ben Hoppus

    2013-01-01

    Whitebark pine (Pinus albicaulis Engelm.) is in serious decline across its range, largely due to the combined effects of Cronartium ribicola J. C. Fisch (an introduced fungal pathogen that causes white pine blister rust), replacement by late successional species, and widespread infestation of mountain pine beetle (...

  7. Carbon costs of constitutive and expressed resistance to a non-native pathogen in limber pine

    Science.gov (United States)

    Patrick J. Vogan; Anna W. Schoettle

    2016-01-01

    Increasing the frequency of resistance to the non-native fungus Cronartium ribicola (causative agent of white pine blister rust, WPBR) in limber pine populations is a primary management objective to sustain high-elevation forest communities. However, it is not known to what extent genetic disease resistance is costly to plant growth or carbon economy. In this...

  8. A sugar pine consensus map: Comparative mapping between the Pinus subgenus Pinus and the subgenus Strobus

    Science.gov (United States)

    Kathleen D. Jermstad; Andrew J. Eckert; Bohun B. Kinloch; Dean A. Davis; Deems C. Burton; Annette D. Mix; Jill L. Wegrzyn; David B. Neale

    2011-01-01

    We have constructed a consensus genetic linkage map for sugar pine using three mapping populations that segregate for resistance to white pine blister rust, a disease caused by the fungal pathogen Cronartium ribicola. The major gene of resistance, Cr1, was mapped in two of the populations and included in the consensus map, which contains 400 markers organized into 19...

  9. Geographic patterns of genetic variation and population structure in Pinus aristata, Rocky Mountain bristlecone pine

    Science.gov (United States)

    Pinus aristata Engelm., Rocky Mountain bristlecone pine, has a narrow core geographic and elevational distribution, occurs in disjunct populations and is threatened by multiple stresses, including rapid climate change, white pine blister rust, and bark beetles. Knowledge of genetic diversity and pop...

  10. Hurricane Katrina winds damaged longleaf pine less than loblolly pine

    Science.gov (United States)

    Kurt H. Johnsen; John R. Butnor; John S. Kush; Ronald C. Schmidtling; C. Dana. Nelson

    2009-01-01

    Some evidence suggests that longleaf pine might be more tolerant of high winds than either slash pine (Pinus elliotii Englem.) or loblolly pine (Pinus taeda L.). We studied wind damage to these three pine species in a common garden experiment in southeast Mississippi following Hurricane Katrina,...

  11. Red Pine Shoot Moth

    Science.gov (United States)

    John Hainze; David Hall

    The red pine shoot moth recently caused significant damage to red pine plantations in Minnesota, Wisconsin and Michigan. Trees of all ages have been attacked, but the most severe damage has occurred in 20-40 year old plantations growing on sandy soils.

  12. Diplodia Tip Blight and Canker of Pines (Pest Alert)

    Science.gov (United States)

    USDA Forest Service

    The fungus Diplodia pinea can cause serious damage to Austrian, ponderosa, red, Scots, mugo, jack, and white pine. Although it is considered a weak pathogen, it may successfully attack and kill trees. It may be more serious on trees growing out of their natural range or stressed by adverse climatic conditions or air pollution. Infection can occur as a result of hail...

  13. Assessing the potential for maladaptation during active management of limber pine populations: A common garden study detects genetic differentiation in response to soil moisture in the Southern Rocky Mountains

    Science.gov (United States)

    Erin M. Borgman; Anna W. Schoettle; Amy L. Angert

    2015-01-01

    Active management is needed to sustain healthy limber pine (Pinus flexilis E. James) forests in the Southern Rocky Mountains (henceforth, Southern Rockies), as they are threatened by the interaction of the mountain pine beetle (Dendroctonus ponderosae Hopkins) epidemic, climate change, and the spread of the non-native pathogen that causes white pine blister...

  14. Community Structure, Biodiversity, and Ecosystem Services in Treeline Whitebark Pine Communities: Potential Impacts from a Non-Native Pathogen

    Directory of Open Access Journals (Sweden)

    Diana F. Tomback

    2016-01-01

    Full Text Available Whitebark pine (Pinus albicaulis has the largest and most northerly distribution of any white pine (Subgenus Strobus in North America, encompassing 18° latitude and 21° longitude in western mountains. Within this broad range, however, whitebark pine occurs within a narrow elevational zone, including upper subalpine and treeline forests, and functions generally as an important keystone and foundation species. In the Rocky Mountains, whitebark pine facilitates the development of krummholz conifer communities in the alpine-treeline ecotone (ATE, and thus potentially provides capacity for critical ecosystem services such as snow retention and soil stabilization. The invasive, exotic pathogen Cronartium ribicola, which causes white pine blister rust, now occurs nearly rangewide in whitebark pine communities, to their northern limits. Here, we synthesize data from 10 studies to document geographic variation in structure, conifer species, and understory plants in whitebark pine treeline communities, and examine the potential role of these communities in snow retention and regulating downstream flows. Whitebark pine mortality is predicted to alter treeline community composition, structure, and function. Whitebark pine losses in the ATE may also alter response to climate warming. Efforts to restore whitebark pine have thus far been limited to subalpine communities, particularly through planting seedlings with potential blister rust resistance. We discuss whether restoration strategies might be appropriate for treeline communities.

  15. White Toenails

    Science.gov (United States)

    ... this page. Please enable Javascript in your browser. White Toenails White toenails can develop for several reasons. Trauma, such ... trauma does not cause broken blood vessels, a white spot may appear under the nail. The spot ...

  16. Pinus L. Pine

    Science.gov (United States)

    Stanley L. Krugman; James L. Jenkinson

    1974-01-01

    Growth habit, occurrence, and use. The genus Pinus, one of the largest and most important of the coniferous genera, comprises about 95 species and numerous varieties and hybrids. Pines are widely distributed, mostly in the Northern Hemisphere from sea level (Pinus contorta var. contorta) to timberline (P...

  17. Jack Pines and Walleyes.

    Science.gov (United States)

    Lakes, Glendon

    1982-01-01

    Secondary school students in Pine River, Minnesota, need enough common knowledge to compete with graduates of other schools, but educators must keep in mind--as they move toward a more uniform curriculum--that each community is unique. (Author/RW)

  18. Freeze injury to southern pine seedlings

    Science.gov (United States)

    David B. South

    2006-01-01

    Freeze injury to roots and shoots of pines is affected by genotype and nursery practices. Local sources of shortleaf pine and Virginia pine that are grown in nurseries in USDA hardiness Zones 6 and 7a are relatively freeze tolerant. However, loblolly pine, slash pine, and longleaf pine seedlings have been injured by a number of freeze events (0 to 24 °F) in hardiness...

  19. White Ring; White ring

    Energy Technology Data Exchange (ETDEWEB)

    Aoki, H.; Yuzawa, H. [Nikken Sekkei Ltd., Osaka (Japan)

    1998-01-05

    White Ring is a citizen`s gymnasium used for figure skating and short track speed skating games of 18th Winter Olympic Games in 1998. White Ring is composed of a main-arena and a sub-arena. For the main-arena with an area 41mtimes66m, an ice link can be made by disengaging the potable floor and by flowing brine in the bridged polystyrene pipes embedded in the concrete floor. Due to the fortunate groundwater in this site, well water is used for the outside air treatment energy in 63% during heating and in 35% during cooling. Ammonia is used as a cooling medium for refrigerating facility. For the heating of audience area in the large space, heat load from the outside is reduced by enhancing the heat insulation performance of the roof of arena. The audience seats are locally heated using heaters. For the White Ring, high quality environment is realized for games through various functions of the large-scale roof of the large space. Success of the big event was expected. 15 figs., 4 tabs.

  20. First report of Fusarium proliferatum causing Fusarium root disease on sugar pine (Pinus lambertiana) in a forest container nursery in California

    Science.gov (United States)

    J. E. Stewart; K. Otto; G. A. Cline; Kas Dumroese; Ned Klopfenstein; M. -S. Kim

    2016-01-01

    Fusarium species, specifically F. commune, F. proliferatum, and F. solani, can cause severe damping-off and root disease in container and bareroot forest nurseries throughout North America. Many conifer and hardwood species can be affected, but Douglas-fir (Pseudotsuga menziesii), western white pine (Pinus monticola), and ponderosa pine (P. ponderosa) are known to be...

  1. Population biology of sugar pine (Pinus lambertiana Dougl.) with reference to historical disturbances in the Lake Tahoe Basin: implications for restoration

    Science.gov (United States)

    Patricia E. Maloney; Detlev R. Vogler; Andrew J. Eckert; Camille E. Jensen; David B. Neale

    2011-01-01

    Historical logging, fire suppression, and an invasive pathogen, Cronartium ribicola, the cause of white pine blister rust (WPBR), are assumed to have dramatically affected sugar pine (Pinus lambertiana) populations in the Lake Tahoe Basin. We examined population- and genetic-level consequences of these disturbances within 10...

  2. Establishing the science foundation to sustain high-elevation five-needle pine forests threatened by novel interacting stresses in four western National Parks [Proceedings

    Science.gov (United States)

    A. W. Schoettle; Jeff Connor; John Mack; Phyllis Pineda Bovin; Jen Beck; Gretchen Baker; R. A. Sniezko; K. S. Burns

    2014-01-01

    High-elevation five-needle white pines are among the most picturesque trees in many national parks, as well as other federal, state, and private lands in western North America. These trees often live to great ages; the trees' gnarled trunks give testimony to fierce winds that buffet them on exposed rocky sites. Ancient limber pines (Pinus flexilis) in Rocky...

  3. Establishing the science foundation to sustain high-elevation five-needle pine forests threatened by novel interacting stresses in four western National Parks

    Science.gov (United States)

    A. W. Schoettle; J. Connor; J. Mack; P. Pineda Bovin; J. Beck; G. M. Baker; R. A. Sniezko; K. S. Burns

    2013-01-01

    High-elevation, five-needle white pines are among the most picturesque trees in many national parks as well as other federal, state, and private lands in western North America. These trees often live to a great age; the trees' gnarled trunks give testimony to fierce winds that buffet them on exposed rocky sites. Ancient limber pines (Pinus flexilis) in Rocky...

  4. Loblolly pine SSR markers for shortleaf pine genetics

    Science.gov (United States)

    C. Dana Nelson; Sedley Josserand; Craig S. Echt; Jeff Koppelman

    2007-01-01

    Simple sequence repeats (SSR) are highly informative DNA-based markers widely used in population genetic and linkage mapping studies. We have been developing PCR primer pairs for amplifying SSR markers for loblolly pine (Pinus taeda L.) using loblolly pine DNA and EST sequence data as starting materials. Fifty primer pairs known to reliably amplify...

  5. Mapping quantitative trait loci controlling early growth in a (longleaf pine × slash pine) × slash pine BC1 family

    Science.gov (United States)

    C. Weng; Thomas L. Kubisiak; C. Dana. Nelson; M. Stine

    2002-01-01

    Random amplified polymorphic DNA (RAPD) markers were employed to map the genome and quantitative trait loci controlling the early growth of a pine hybrid F1 tree (Pinus palustris Mill. × P. elliottii Engl.) and a recurrent slash pine tree (P. ellottii Engl.) in a (longleaf pine × slash pine...

  6. White lies

    NARCIS (Netherlands)

    Erat, S.; Gneezy, U.

    2012-01-01

    In this paper we distinguish between two types of white lies: those that help others at the expense of the person telling the lie, which we term altruistic white lies, and those that help both others and the liar, which we term Pareto white lies. We find that a large fraction of participants are

  7. Southern Pine Beetle Information System (SPBIS)

    Science.gov (United States)

    Valli Peacher

    2011-01-01

    The southern pine beetle (SPB) is the most destructive forest insect in the South. The SPB attacks all species of southern pine, but loblolly and shortleaf are most susceptible. The Southern Pine Beetle Information System (SPBIS) is the computerized database used by the national forests in the Southern Region for tracking individual southern pine beetle infestations....

  8. The Austrian x red pine hybrid

    Science.gov (United States)

    W. B. Critchfield

    1963-01-01

    The genetic improvement of red pine (Pinus resinosa Ait.) presents tree breeders with one of their most difficult problems. Not only is this valuable species remarkably uniform, but until 1955 it resisted all attempts to cross it with other pines. In that year red pine and Austrian pine (P. nigra var. austriaca [...

  9. Germination and early growth of four pine species on soil treated with simulated acid rain

    Energy Technology Data Exchange (ETDEWEB)

    Schier, G.A. (USDA Forest Service, Delaware, OH (USA))

    1987-01-01

    The effect of simulated rain solutions of pH 5.6, 4.0, or 3.0 (SO{sub 4}{sup 2-}:Cl{sup -}:NO{sub 3}{sup -}, 4:2:1) on seed germination and early seedling growth of pitch pine (Pinus rigida Mill.), shortleaf pine (P. echinata Mill.), loblolly pine (P.taeda L.), and eastern white pine (P. strobus L.) was observed in a growth chamber on unsterilized soil from the New Jersey Pine Barrens that had been treated for 1 year with the acid rain solutions. Damping-off caused the death of all seedlings in the pH 3.0 treatments. Autoclaving the soil controlled damping-off. However, chemical changes in the soil increased the solubilities of mineral elements, and at pH 3.0 Al toxicity inhibited root growth of pitch pine and shortleaf pine. In spite of suppressed root growth, seedling top growth was significantly greater at pH 3.0 than at less acid treatments possibly owing to greater inputs of N and increased availability of mineral nutrients. 23 refs., 1 fig., 7 tabs.

  10. Hydrology and numerical simulation of groundwater movement and heat transport in Snake Valley and surrounding areas, Juab, Miller, and Beaver Counties, Utah, and White Pine and Lincoln Counties, Nevada

    Science.gov (United States)

    Masbruch, Melissa D.; Gardner, Philip M.; Brooks, Lynette E.

    2014-01-01

    previous estimates. Current well withdrawals are 28,000 acre-ft/yr. Subsurface outflow from Snake Valley moves into Pine Valley (2,000 acre-ft/yr), Wah Wah Valley (23 acre-ft/yr), Tule Valley (33,000 acre-ft/yr), Fish Springs Flat (790 acre-ft/yr), and outside of the study area towards Great Salt Lake Desert (8,400 acre-ft/yr); these outflows, totaling about 44,000 acre-ft/yr, are within the range of previous estimates.The subsurface flow amounts indicate the degree of connectivity between hydrographic areas within the study area. The simulated transmissivity and locations of natural discharge, however, provide a better estimate of the effect of groundwater withdrawals on groundwater resources than does the amount and direction of subsurface flow between hydrographic areas. The distribution of simulated transmissivity throughout the study area includes many areas of high transmissivity within and between hydrographic areas. Increased well withdrawals within these high transmissivity areas will likely affect a large part of the study area, resulting in declining groundwater levels, as well as leading to a decrease in natural discharge to springs and evapotranspiration.

  11. Red Pine in the Northern Lake States

    Science.gov (United States)

    Thomas L. Schmidt

    2003-01-01

    Red pine is an important tree species for the Northern Lake States. About 4 percent of the total area of timberland is dominated by red pine but most other forest types also have red pine as a component. The red pine forest type in the region has dramatically increased in area since the 1930s. Stand-size class distribution of the red pine forest type has changed over...

  12. Influence of low temperature on germination and endogenous growth regulator contents in Scots Pine (Pinus silvestris L. seeds

    Directory of Open Access Journals (Sweden)

    J. Kopcewicz

    2015-01-01

    Full Text Available Twenty days-long stratification of Scots pine seeds results in the seeds germinating in similar high percentage in darkness as in light. The period of stratification enough to overcome the "barrier" of light is connected with simultaneous increase of gibberellin contents, especially with the appearance of the new groups of gibberellins qualitatively similar to those occurring in pine tissues under the influence of red and white light. It was also found that seedlings grown from stratificated pine seeds produce the increased amounts of gibberellins.

  13. Strength reduction in slash pine (Pinus elliotii) wood caused by decay fungi

    Science.gov (United States)

    Zhong Yang; Zhehui Jiang; Chung Y. Hse; Todd F. Shupe

    2009-01-01

    Small wood specimens selected from slash pine (Pinus elliotii )trees at three growth rates (fast, medium, and slow) were inoculated with brown-rot and white-rot fungi and then evaluated for work to maximum load (WML), modulus of rupture (MOR), and modulus of elasticity (MOE). The experimental variables studied included a brown-rot fungus (Gloeophyllum trabeum...

  14. Colonization behaviors of mountain pine beetle on novel hosts: Implications for range expansion into northeastern North America.

    Science.gov (United States)

    Rosenberger, Derek W; Venette, Robert C; Maddox, Mitchell P; Aukema, Brian H

    2017-01-01

    As climates change, thermal limits may no longer constrain some native herbivores within their historical ranges. The mountain pine beetle, Dendroctonus ponderosae Hopkins, is a tree-killing bark beetle native to western North America that is currently expanding its range. Continued eastward expansion through the newly invaded and novel jack pine (Pinus banksiana Lamb.) trees of the Canadian boreal forest could result in exposure of several species of novel potential host pines common in northeastern North America to this oligophagous herbivore. Due to the tightly co-evolved relationship between mountain pine beetle and western pine hosts, in which the insect utilizes the defensive chemistry of the host to stimulate mass attacks, we hypothesized that lack of co-evolutionary association would affect the host attraction and acceptance behaviors of this insect among novel hosts, particularly those with little known historical association with an aggressive stem-infesting insect. We studied how beetle behavior differed among the various stages of colonization on newly cut logs of four novel potential pine host species; jack, red (P. resinosa Ait.), eastern white (P. strobus L.) and Scots (P. sylvestris L.) pines, as well as two historical hosts, ponderosa (P. ponderosa Dougl. ex. Laws. var. scopulorum Engelm.) and lodgepole (P. contorta Dougl. var. latifolia Engelm.) pines. Overall, we found that beetle colonization behaviors at each stage in the colonization process differ between pine hosts, likely due to differing chemical and physical bark traits. Pines without co-evolved constitutive defenses against mountain pine beetle exhibited reduced amounts of defensive monoterpenoid chemicals; however, such patterns also reduced beetle attraction and colonization. Neither chemical nor physical defenses fully defended trees against the various stages of host procurement that can result in tree colonization and death.

  15. Spatiotemporal Dynamics of Fire in Whitebark Pine Stands on two Mountains in the Lolo National Forest, Montana, USA.

    Science.gov (United States)

    Larson, E. R.; Grissino-Mayer, H. D.

    2004-12-01

    Whitebark pine (Pinus albicaulis) is a long-lived tree species that exists throughout high elevation and treeline forest communities of western North America. It is the foundation of a diminishing ecosystem that supports Clark's nutcrackers (Nucifraga columbiana), red squirrels (Tamiasciurus hudsonicus), grizzly bears (Ursus arctos), and black bears (U. americana). Several factors are directly linked to the decline of the whitebark pine ecosystem: mortality from recent and widespread mountain pine beetle (Dendroctonus ponderosae) outbreaks, infestation by the invasive white pine blister rust (Cronartium ribicola, an exotic fungal canker that weakens and eventually kills white pines), and fire suppression that may have altered the historic fire regime and enabled fire-intolerant tree species to encroach upon whitebark pine stands. The synergistic effects of these factors have led to a dramatic decline in whitebark pine communities throughout its native range, and in response land managers and conservationists have called for research to better understand the ecological dynamics of this little studied ecosystem. My research uses dendrochronology to investigate the fire history of whitebark pine stands on three mountains in the Lolo National Forest, Montana, via fire-scar and age structure analyses. I present here the results from the fire-scar analyses from Morrell Mountain where I obtained 40 cross sections from dead and down whitebark pines. Individual tree mean fire return intervals (MFRI) range from 33 to 119 years, with a stand MFRI of 49 years that includes fire scars dating to the 16th century. Fire events scarred multiple trees in AD 1754, 1796, and 1843, indicating a mixed-severity fire regime. The majority of the samples recorded a frost event in AD 1601, perhaps evidence of the AD 1600 eruption of Mt. Huaynapatina in the Peruvian Andes. My research not only provides an historical framework for land managers, but also provides an opportunity to examine long

  16. Influence of pine straw harvesting, prescribed fire, and fertilization on a Louisiana longleaf pine site

    Science.gov (United States)

    James D. Haywood

    2009-01-01

    This research was initiated in a 34-year-old, direct-seeded stand of longleaf pine (Pinus palustris Mill.) to study how pine straw management practices (harvesting, fire, and fertilization) affected the longleaf pine overstory and pine straw yields. A randomized complete block split-plot design was installed with two main plot treatments...

  17. Assessing longleaf pine (Pinus palustris) restoration after southern pine beetle kill using a compact experimental design

    Science.gov (United States)

    J.-P. Berrill; C.M. Dagley

    2010-01-01

    A compact experimental design and analysis is presented of longleaf pine (Pinus palustris) survival and growth in a restoration project in the Piedmont region of Georgia, USA. Longleaf pine seedlings were planted after salvage logging and broadcast burning in areas of catastrophic southern pine beetle (Dendroctonus frontalis) attacks on even-aged mixed pine-hardwood...

  18. Mountain Pine Beetles Use Volatile Cues to Locate Host Limber Pine and Avoid Non-Host Great Basin Bristlecone Pine.

    Science.gov (United States)

    Gray, Curtis A; Runyon, Justin B; Jenkins, Michael J; Giunta, Andrew D

    2015-01-01

    The tree-killing mountain pine beetle (Dendroctonus ponderosae Hopkins) is an important disturbance agent of western North American forests and recent outbreaks have affected tens of millions of hectares of trees. Most western North American pines (Pinus spp.) are hosts and are successfully attacked by mountain pine beetles whereas a handful of pine species are not suitable hosts and are rarely attacked. How pioneering females locate host trees is not well understood, with prevailing theory involving random landings and/or visual cues. Here we show that female mountain pine beetles orient toward volatile organic compounds (VOCs) from host limber pine (Pinus flexilis James) and away from VOCs of non-host Great Basin bristlecone pine (Pinus longaeva Bailey) in a Y-tube olfactometer. When presented with VOCs of both trees, females overwhelmingly choose limber pine over Great Basin bristlecone pine. Analysis of VOCs collected from co-occurring limber and Great Basin bristlecone pine trees revealed only a few quantitative differences. Noticeable differences included the monoterpenes 3-carene and D-limonene which were produced in greater amounts by host limber pine. We found no evidence that 3-carene is important for beetles when selecting trees, it was not attractive alone and its addition to Great Basin bristlecone pine VOCs did not alter female selection. However, addition of D-limonene to Great Basin bristlecone pine VOCs disrupted the ability of beetles to distinguish between tree species. When presented alone, D-limonene did not affect behavior, suggesting that the response is mediated by multiple compounds. A better understanding of host selection by mountain pine beetles could improve strategies for managing this important forest insect. Moreover, elucidating how Great Basin bristlecone pine escapes attack by mountain pine beetles could provide insight into mechanisms underlying the incredible longevity of this tree species.

  19. Southern Pine Based on Biorefinery Center

    Energy Technology Data Exchange (ETDEWEB)

    Ragauskas, Arthur J. [Georgia Inst. of Technology, Atlanta, GA (United States); Singh, Preet [Georgia Inst. of Technology, Atlanta, GA (United States)

    2013-12-20

    This program seeks to develop an integrated southern pine wood to biofuels/biomaterials processing facility on the Recipient’s campus, that will test advanced integrated wood processing technologies at the laboratory scale, including: The generation of the bioethanol from pines residues and hemicelluloses extracted from pine woodchips; The conversion of extracted woodchips to linerboard and bleach grade pulps; and the efficient conversion of pine residues, bark and kraft cooking liquor into a useful pyrolysis oil.

  20. Assessing the impact of wood decay fungi on the modulus of elasticity of slash pine (Pinus elliottii) by stress wave non-destructive testing

    Science.gov (United States)

    Zhong Yang; Zhehui Jiang; Chung Y. Hse; Ru Liu

    2017-01-01

    Small wood specimens selected from six slash pine (Pinus elliottii) trees were inoculated with brown-rot and white-rot fungi and then evaluated for static modulus of elasticity (MOE) and dynamic MOE (MOEsw). The experimental variables studied included a brown-rot fungus (Gloeophyllum trabeum) and a white-rot fungus (Trametes versicolor) for six exposure periods (2, 4,...

  1. Ecology of southwestern ponderosa pine forests

    Science.gov (United States)

    William H. Moir; Brian W. Geils; Mary Ann Benoit; Dan Scurlock

    1997-01-01

    Ponderosa pine forests are important because of their wide distribution, commercial value, and because they provide habitat for many plants and animals. Ponderosa pine forests are noted for their variety of passerine birds resulting from variation in forest composition and structure modified by past and present human use. Subsequent chapters discuss how ponderosa pine...

  2. Shortleaf pine: a species at risk?

    Science.gov (United States)

    Charles G. Tauer; Shiqin Xu; C. Dana Nelson; James M. Guldin

    2007-01-01

    Since the 1950s the existence of natural hybrids between shortleaf pine and loblolly pine has been recognized and reported in the literature. In a range-wide study of isoenzyme diversity in shortleaf pine, we found 16 percent of the trees from western populations were hybrids, based on the isocitrate dehydrogenase (IDH) locus. In stands thought to be pure shortleaf...

  3. Silvical characteristics of Virginia pine (Pinus virginiana)

    Science.gov (United States)

    Albert G., Jr. Snow

    1960-01-01

    Virginia pine has finally attained its rightful place among trees of commercial importance. It has done so in spite of being called "scrub pine" and "poverty pine" - and in spite of the term "forest weed", which has lingered long in the speech of oldtimers who remember the days of timber-plenty.

  4. Gravity Data from Newark Valley, White Pine County, Nevada

    Science.gov (United States)

    Mankinen, Edward A.; McKee, Edwin H.

    2007-01-01

    The Newark Valley area, eastern Nevada is one of thirteen major ground-water basins investigated by the BARCAS (Basin and Range Carbonate Aquifer Study) Project. Gravity data are being used to help characterize the geophysical framework of the region. Although gravity coverage was extensive over parts of the BARCAS study area, data were sparse for a number of the valleys, including the northern part of Newark Valley. We addressed this lack of data by establishing seventy new gravity stations in and around Newark Valley. All available gravity data were then evaluated to determine their reliability, prior to calculating an isostatic residual gravity map to be used for subsequent analyses. A gravity inversion method was used to calculate depths to pre-Cenozoic basement rock and estimates of maximum alluvial/volcanic fill. The enhanced gravity coverage and the incorporation of lithologic information from several deep oil and gas wells yields a view of subsurface shape of the basin and will provide information useful for the development of hydrogeologic models for the region.

  5. Tappable Pine Trees: Commercial Production of Terpene Biofuels in Pine

    Energy Technology Data Exchange (ETDEWEB)

    None

    2012-01-01

    PETRO Project: The University of Florida is working to increase the amount of turpentine in harvested pine from 4% to 20% of its dry weight. While enhanced feedstocks for biofuels have generally focused on fuel production from leafy plants and grasses, the University of Florida is experimenting with enhancing fuel production in a species of pine that is currently used in the paper pulping industry. Pine trees naturally produce around 3-5% terpene content in the wood—terpenes are the energy-dense fuel molecules that are the predominant components of turpentine. The team aims to increase the terpene storage potential and production capacity while improving the terpene composition to a point at which the trees could be tapped while alive, like sugar maples. Growth and production from these trees will take years, but this pioneering technology could have significant impact in making available an economical and domestic source of aviation and diesel biofuels.

  6. Adaptive evolution of Mediterranean pines.

    Science.gov (United States)

    Grivet, Delphine; Climent, José; Zabal-Aguirre, Mario; Neale, David B; Vendramin, Giovanni G; González-Martínez, Santiago C

    2013-09-01

    Mediterranean pines represent an extremely heterogeneous assembly. Although they have evolved under similar environmental conditions, they diversified long ago, ca. 10 Mya, and present distinct biogeographic and demographic histories. Therefore, it is of special interest to understand whether and to what extent they have developed specific strategies of adaptive evolution through time and space. To explore evolutionary patterns, the Mediterranean pines' phylogeny was first reconstructed analyzing a new set of 21 low-copy nuclear genes with multilocus Bayesian tree reconstruction methods. Secondly, a phylogenetic approach was used to search for footprints of natural selection and to examine the evolution of multiple phenotypic traits. We identified two genes (involved in pines' defense and stress responses) that have likely played a role in the adaptation of Mediterranean pines to their environment. Moreover, few life-history traits showed historical or evolutionary adaptive convergence in Mediterranean lineages, while patterns of character evolution revealed various evolutionary trade-offs linking growth-development, reproduction and fire-related traits. Assessing the evolutionary path of important life-history traits, as well as the genomic basis of adaptive variation is central to understanding the past evolutionary success of Mediterranean pines and their future response to environmental changes. Copyright © 2013 Elsevier Inc. All rights reserved.

  7. White Rock

    Science.gov (United States)

    2002-01-01

    (Released 19 April 2002) The Science 'White Rock' is the unofficial name for this unusual landform which was first observed during the Mariner 9 mission in the early 1970's. As later analysis of additional data sets would show, White Rock is neither white nor dense rock. Its apparent brightness arises from the fact that the material surrounding it is so dark. Images from the Mars Global Surveyor MOC camera revealed dark sand dunes surrounding White Rock and on the floor of the troughs within it. Some of these dunes are just apparent in the THEMIS image. Although there was speculation that the material composing White Rock could be salts from an ancient dry lakebed, spectral data from the MGS TES instrument did not support this claim. Instead, the White Rock deposit may be the erosional remnant of a previously more continuous occurrence of air fall sediments, either volcanic ash or windblown dust. The THEMIS image offers new evidence for the idea that the original deposit covered a larger area. Approximately 10 kilometers to the southeast of the main deposit are some tiny knobs of similarly bright material preserved on the floor of a small crater. Given that the eolian erosion of the main White Rock deposit has produced isolated knobs at its edges, it is reasonable to suspect that the more distant outliers are the remnants of a once continuous deposit that stretched at least to this location. The fact that so little remains of the larger deposit suggests that the material is very easily eroded and simply blows away. The Story Fingers of hard, white rock seem to jut out like icy daggers across a moody Martian surface, but appearances can be deceiving. These bright, jagged features are neither white, nor icy, nor even hard and rocky! So what are they, and why are they so different from the surrounding terrain? Scientists know that you can't always trust what your eyes see alone. You have to use other kinds of science instruments to measure things that our eyes can

  8. A Loblolly Pine Management Guide: Natural Regeneration of Loblolly Pine

    Science.gov (United States)

    M. Boyd Edwards

    1987-01-01

    For many landowners, low cost makes natural regeneration an attractive alternative to planting when loblolly pine stands are harvested. Clearcutting, seed-tree, shelterwood, and selection methods can be used. Keys to success are a suitable seedbed.an adequate seed supply, sufficient moisture. and freedom from excessive competition.

  9. European Whiteness?

    DEFF Research Database (Denmark)

    Blaagaard, Bolette

    2008-01-01

    Born out of the United States’ (U.S.) history of slavery and segregation and intertwined with gender studies and feminism, the field of critical whiteness studies does not fit easily into a European setting and the particular historical context that entails. In order for a field of European...... critical whiteness studies to emerge, its relation to the U.S. theoretical framework, as well as the particularities of the European context need to be taken into account.. The article makes a call for a multi-layered approach to take over from the identity politics so often employed in the fields of U...

  10. Pine needle abortion biomarker detected in bovine fetal fluids

    Science.gov (United States)

    Pine needle abortion is a naturally occurring condition in free-range cattle caused by the consumption of pine needles from select species of cypress, juniper, pine, and spruce trees. Confirmatory diagnosis of pine needle abortion has previously relied on a combined case history of pine needle cons...

  11. Underplanting shortleaf pine at Coldwater Conservation Area in Missouri

    Science.gov (United States)

    Jason Jensen; David Gwaze

    2007-01-01

    Restoring shortleaf pine throughout its native range in the Ozark Highlands is a high priority in Missouri. Restoring shortleaf pine on former pine and oak-pine sites is a longterm strategy for mitigating chronic oak decline (Law et al. 2004). Underplanting or preharvest planting is one method that has potential for restoring shortleaf pine.

  12. Successional trends of six mature shortleaf pine forests in Missouri

    Science.gov (United States)

    Michael C. Stambaugh; Rose-Marie Muzika

    2007-01-01

    Many of Missouri's mature oak-shortleaf pine (Quercus-Pinus echinata) forests are in a mid-transition stage characterized by partial pine overstory, limited pine recruitment, and minimal pine regeneration. Restoration of shortleaf pine communities at a large scale necessitates the understanding and management of natural regeneration. To...

  13. Genetic diversity within and among populations of shortleaf pine (Pinus echinata Mill.) and loblolly pine (Pinus taeda L.)

    Science.gov (United States)

    Shiqin Xu; C.G. Tauer; C. Dana Nelson

    2008-01-01

    Shortleaf pine (n=93) and loblolly pine (n=112) trees representing 22 seed sources or 16 physiographic populations were sampled from Southwide Southern Pine Seed Source Study plantings located in Oklahoma, Arkansas and Mississippi. The sampled trees were grown from shortleaf pine and loblolly pine seeds formed in 1951 and 1952, prior to the start of intensive forest...

  14. Participatory genetic improvement: longleaf pine

    Science.gov (United States)

    C. Dana Nelson; Gwendolyn Boyd; Randall J. Rousseau; Barbara S. Crane; Craig S. Echt; Kurt H. Johnsen

    2015-01-01

    University-industry-state cooperative tree improvement has been highly successful in the southern United States. Over nearly 60 years, three cooperative programs have led the way in developing and deploying genetically improved planting stocks for loblolly (Pinus taeda L.) and slash (P. elliottii Engelm.) pines. However, much lower levels of success have been achieved...

  15. Pine Ridge Fire summary report

    Science.gov (United States)

    Hannah Brenkert-Smith; Sarah McCaffrey; Melanie. Stidham

    2013-01-01

    In July 2012, immediately after the Pine Ridge Fire burned outside De Beque, Colorado, a team of researchers interviewed fire managers, local government officials, and residents to understand perceptions of the event itself, communication, evacuation, and pre-fire preparedness in order to identify contributors to success and areas for improvement. Although the fire had...

  16. Sugar pine seed harvest by Clark's nutcracker: Annual use of a transient resource in Crater Lake National Park, Oregon

    Science.gov (United States)

    Taylor J. Turner; Diana F. Tomback; Bradley Van Anderson; Michael Murray

    2011-01-01

    Clark's nutcrackers (Nucifraga columbiana) are well known for using conifer seeds as their principal nutriment source. Seeds are primarily harvested from whitebark (Pinus albicaulis), piñon (P. edulis), limber (P. flexilis), southwestern white (P. strobiformis), Jeffrey (P. jeffreyi), and ponderosa (P. ponderosa) pine as well as Douglas-fir (Pseudotsuga menziesii...

  17. Lignin-modifying enzymes of the white rot basidiomycete Ganoderma lucidum

    Energy Technology Data Exchange (ETDEWEB)

    D/Souza, T.M.; Merritt, C.S.; Reddy, C.A.

    1999-12-01

    Ganoderma lucidum, a white rot basidiomycete widely distributed worldwide, was studied for the production of the lignin-modifying enzymes laccase, manganese-dependent peroxidase (MnP), and lignin peroxidase (LiP). Laccase levels observed in high-nitrogen shaken cultures were much greater than those seen in low-nitrogen, malt extract, or wool-grown cultures and those reported for most other white rot fungi to date. Laccase production was readily seen in cultures grown with pine or poplar as the sole carbon and energy source. Cultures containing both pine and poplar showed 5- to 10-fold-higher levels of laccase than cultures containing pine or poplar alone. Since syringyl units are structural components important in poplar lignin and other hardwoods but much less so in pine lignin and other softwoods, pine cultures were supplemented with syringic acid, and this resulted in laccase levels comparable to those seen in pine-plus-poplar cultures. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of concentrated extracellular culture fluid from HM cultures showed two laccase activity bands, where as isoelectric focusing revealed five major laccase activity bands with estimated pIs of 3.0, 4.25, 4.5, and 5.1. Low levels of MnP activity were detected in poplar-grown cultures but not in cultures grown with pine, with pine plus syringic acid, or in HN medium. No LiP activity was seen in any of the media tested; however, probing the genomic DNA with the LiP cDNA (CLG4) from the white rot fungus Phanerochaete chrysosporium showed distinct hybridization bands suggesting the presence of lip-like sequences in G. lucidum.

  18. HOW to Manage Jack Pine to Reduce Damage from Jack Pine Budworm

    Science.gov (United States)

    Deborah G. McCullough; Steven Katovich; Robert L. Heyd; Shane Weber

    1994-01-01

    Jack pine budworm, Choristoneura pinus pinus Freeman, is a needle feeding caterpillar that is generally considered the most significant pest of jack pine. Vigorous young jack pine stands are rarely damaged during outbreaks. The most vigorous stands are well stocked, evenly spaced, fairly uniform in height, and less than 45 years old. Stands older than 45 years that are...

  19. Species composition influences management outcomes following mountain pine beetle in lodgepole pine-dominated forests

    Science.gov (United States)

    Kristen Pelz; C. C. Rhoades; R. M. Hubbard; M. A. Battaglia; F. W. Smith

    2015-01-01

    Mountain pine beetle outbreaks have killed lodgepole pine on more than one million hectares of Colorado and southern Wyoming forest during the last decade and have prompted harvest operations throughout the region. In northern Colorado, lodgepole pine commonly occurs in mixed stands with subalpine fir, Engelmann spruce, and aspen. Variation in tree species composition...

  20. Shortleaf pine reproduction abundance and growth in pine-oak stands in the Missouri Ozarks

    Science.gov (United States)

    Elizabeth M. Blizzard; Doyle Henken; John M. Kabrick; Daniel C. Dey; David R. Larsen; David Gwaze

    2007-01-01

    We conducted an operational study to evaluate effect of site preparation treatments on pine reproduction density and the impact of overstory basal area and understory density on pine reproduction height and basal diameter in pine-oak stands in the Missouri Ozarks. Stands were harvested to or below B-level stocking, but patchiness of the oak decline lead to some plots...

  1. Timber management guide for shortleaf pine and oak-pine types in Missouri.

    Science.gov (United States)

    K.A. Brinkman; N.F. Rogers

    1967-01-01

    Summarizes recommended management practices for the shortleaf pine and oak-pine types in Missouri. Describes sites and soils, and silvical characteristics of pine; discusses rotations, cutting cycles, stocking levels, growing space requirements, and regeneration techniques; and prescribes treatments for stands with specified characteristics to maximize returns from...

  2. PINE CREEK ROADLESS AREA, OREGON.

    Science.gov (United States)

    Walker, George W.; Denton, David K.

    1984-01-01

    Examination of the Pine Creek Roadless Area, Oregon indicates that there is little likelihood for the occurrence of energy or metallic mineral resources in the area. No mines or mineral prospects were identified during the investigation. Although nearby parts of Harney Basin are characterized by higher than normal heat flow, indicating that the region as a whole may have some as yet undefined potential for the occurrence of the geothermal energy resources, no potential for this resource was identified in the roadless area.

  3. Heat sterilization times of red pine boards

    Science.gov (United States)

    William T. Simpson

    2004-01-01

    The objective of this study was to determine the time required to heat the center of red pine boards to various temperatures for sterilization. This information will serve as a guideline for those concerned with heat sterilizing wood pallets and other wood shipping containers to meet heat treatment requirements for protection against invasive pests. Red pine boards, 4...

  4. Insects in IBL-4 pine weevil traps

    Science.gov (United States)

    I. Skrzecz

    2003-01-01

    Pipe traps (IBL-4) are used in Polish coniferous plantations to monitor and control the pine weevil (Hylobius abietis L.). This study was conducted in a one-year old pine plantation established on a reforested clear-cut area in order to evaluate the impact of these traps on non-target insects. Evaluation of the catches indicated that species of

  5. Financial analysis of pruning ponderosa pine.

    Science.gov (United States)

    Roger D. Fight; Natalie A. Bolon; James M. Cahill

    1992-01-01

    A recent lumber recovery study of pruned and unpruned ponderosa pine (Pinus ponderosa Dougl. ex Laws.) was used to project the financial return from pruning ponderosa pine in the Medford District of the Bureau of Land Management and in the Ochoco and Deschutes National Forests. The cost of pruning at which the investment would yield an expected 4-...

  6. Ecological Impacts of Southern Pine Beetle

    Science.gov (United States)

    Maria D. Tchakerian; Robert N. Coulson

    2011-01-01

    The southern pine beetle (SPB) is the most important biotic disturbance in southern pine forests and causes extensive changes to the forest environment. In this chapter we provide an overview of the ecological impacts of the SPB on forest conditions (the state of the forest) and on forest resources (uses and values associated with the forest). We define ecological...

  7. Pine Creek Ranch; Annual Report 2002.

    Energy Technology Data Exchange (ETDEWEB)

    Berry, Mark E.

    2003-02-01

    This report gives information about the following four objectives: OBJECTIVE 1--Gather scientific baseline information for monitoring purposes and to assist in the development of management plans for Pine Creek Ranch; OBJECTIVE 2--Complete and implement management plans; OBJECTIVE 3--Protect, manage and enhance the assets and resources of Pine Creek Ranch; and OBJECTIVE 4--Deliverables.

  8. Risk Assessment for the Southern Pine Beetle

    Science.gov (United States)

    Andrew Birt

    2011-01-01

    The southern pine beetle (SPB) causes significant damage (tree mortality) to pine forests. Although this tree mortality has characteristic temporal and spatial patterns, the precise location and timing of damage is to some extent unpredictable. Consequently, although forest managers are able to identify stands that are predisposed to SPB damage, they are unable to...

  9. Biogeography and diversity of pines in the Madrean Archipelago

    Science.gov (United States)

    George M. Ferguson; Aaron D. Flesch; Thomas R. Van Devender

    2013-01-01

    Pines are important dominants in pine-oak, pine and mixed-conifer forests across the Colorado Plateau, southern Rocky Mountains, Sierra Madre Occidental, and in the intervening Sky Islands of the United States-Mexico borderlands. All 17 native species of pines in the Sky Islands region or their adjacent mountain mainlands reach the northern or southern margins of their...

  10. Evolutionary relationships of Slash Pine ( Pinus elliottii ) with its ...

    African Journals Online (AJOL)

    llozymes in bud tissue and monoterpene contents in xylem oleoresin of slash pine (Pinus elliottii) were analyzed from populations across the natural distribution, as well as those from other species in the AUSTRALES pines. Allozyme diversity measures of slash pine were similar to those found in other southern pines.

  11. Needle asymmetry, pine vigour and pine selection by the processionary moth Thaumetopoea pityocampa

    Science.gov (United States)

    Pérez-Contreras, Tomás; Soler, Juan José; Soler, Manuel

    2008-03-01

    Developmental stability reflects the ability of a genotype to control stable development of a specific phenotype under a wide range of environmental conditions. Developmentally unstable phenotypes can be recognised by deviations from bilateral symmetry in bilaterally symmetrical traits and, because asymmetry might reflect nutritional quality of leaves for phytophagous insects, they therefore may base plant selection depending on leaf asymmetry. In this article we study such hypothetical relationships occurring between Aleppo pine ( Pinus halepensis) and pine-host selection by the pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Thaumetopoeidae). Needle length of Aleppo pines indicated directional asymmetry and, as the hypothesis of developmental stability predicts, relative asymmetry was negatively related to needle length and positively to pine growth in height. Moreover, relative asymmetry proved to be negatively related to concentration of limonene, a defensive monoterpene that affects pine selection by adult female moths. In terms of growth, pine variation in needle length can be explained by the increase in volume of the pines from one to the next year, with smaller needles appearing in the pines that most increased their volume and those that least increased their height. Finally, as expected from a phytophagous insect that selects plants in relation to nutritional characteristics and level of chemical defence against herbivorous, the pine processionary moths selectively oviposited in the trees with the largest and most asymmetric needles. With these results, two of the main hypotheses that explain plant selection, plant-stress and plant-vigour hypotheses are discussed.

  12. Natural hybridization within seed sources of shortleaf pine (Pinus echinata Mill.) and loblolly pine (Pinus taeda L.)

    Science.gov (United States)

    Shiqin Xu; C.G. Tauer; C. Dana Nelson

    2008-01-01

    Shortleaf and loblolly pine trees (n=93 and 102, respectively) from 22 seed sources of the Southwide Southern Pine Seed Source Study plantings or equivalent origin were evaluated for amplified fragment length polymorphism (AFLP) variation. These sampled trees represent shortleaf pine and loblolly pine, as they existed across their native geographic ranges before...

  13. Hybridization Leads to Loss of Genetic Integrity in Shortleaf Pine: Unexpected Consequences of Pine Management and Fire Suppression

    Science.gov (United States)

    Charles G. Tauer; John F. Stewart; Rodney E. Will; Curtis J. Lilly; James M. Guldin; C. Dana Nelson

    2012-01-01

    Hybridization between shortleaf pine and loblolly pine is causing loss of genetic integrity (the tendency of a population to maintain its genotypes over generations) in shortleaf pine, a species already exhibiting dramatic declines due to land-use changes. Recent findings indicate hybridization has increased in shortleaf pine stands from 3% during the 1950s to 45% for...

  14. Breeding of the White-Tailed Eagle in the Omsk Region, Russia

    Directory of Open Access Journals (Sweden)

    Boris Yu. Kassal

    2014-11-01

    Full Text Available The White-Tailed Eagle (Haliaeetus albicilla in the Omsk region prefers to breed within the Irtysh River floodplain and its tributaries, as well as along Rahtovo lake and large lake systems (Bolshie Krutinskie, Tyukalinskie, Ilyinskie. Its nests are built mainly on silver birch, aspen, Scots and Siberian pines, white willow and poplars, at a height of 6–15 m with zonal.

  15. Cervid forage utilization in noncommercially thinned ponderosa pine forests

    Science.gov (United States)

    Gibbs, M.C.; Jenks, J.A.; Deperno, C.S.; Sowell, B.F.; Jenkins, Kurt J.

    2004-01-01

    To evaluate effects of noncommercial thinning, utilization of forages consumed by elk (Cervus elaphus L.), mule deer (Odocoileus hemionus Raf.), and white-tailed deer (Odocoileus virginianus Raf.) was measured in ponderosa pine (Pinus ponderosa P. & C. Lawson) stands in Custer State Park, S. D. Treatments consisted of unthinned (control; 22 to 32 m2/ha basal area), moderately thinned (12 to 22 m2/ha basal area), and heavily thinned (3 to 13 m2/ha basal area) stands of ponderosa pine. During June, July, and August, 1991 and 1992, about 7,000 individual plants were marked along permanent transects and percent-weight-removed by grazing was ocularly estimated. Sample plots were established along transects and plants within plots were clipped to estimate standing biomass. Pellet groups were counted throughout the study area to determine summer habitat use of elk and deer. Diet composition was evaluated using microhistological analysis of fecal samples. Average percent-weight-removed from all marked plants and percent-plants-grazed were used to evaluate forage utilization. Standing biomass of graminoids, shrubs, and forbs increased (P 0.05) across treatments. Forb use averaged less than 5% within sampling periods when measured as percent-weight-removed and percent-of-plants grazed and did not differ among treatments. Results of pellet group surveys indicated that cervids were primarily using meadow habitats. When averaged over the 2 years, forbs were the major forage class in deer diets, whereas graminoids were the major forage class in diets of elk.

  16. Identification of the botanical origin of pine nuts found in food products by gas-liquid chromatography analysis of fatty acid profile.

    Science.gov (United States)

    Destaillats, Frédéric; Cruz-Hernandez, Cristina; Giuffrida, Francesca; Dionisi, Fabiola

    2010-02-24

    Pine nuts are traditionally used in various part of the world for the preparation of desserts or sauces or in salads. Local production is not sufficient to cope with the high demand of pine nuts around the world, and countries such as China or Pakistan are exporting much of their production to Western countries. Almost all the nuts that are traditionally consumed belong to the Pinus genus, but over the past years, the number of consumer complaints following consumption of commercial pine nuts increased. Some consumers experienced taste disturbance lasting for up to two weeks after consumption. Food safety agencies raised some concerns regarding pine nuts imported from Asia and their association with taste disturbance. However, even though a formal association has not been found to date, the Pinus genus comprises species that are not classified as edible and could be eventually used to adulterate edible species. Pinus spp. seed lipids are known to contain very specific polyunsaturated fatty acids know as Delta5-olefinic acids. Seed fatty acid profile of conifers had been used in the past as a taxonomic marker, and in the present study to identify the botanical origin of pine nut in nine commercial products. Fast gas-liquid chromatography (GLC) was used to resolve the complete fatty acid profile of Pinus spp. samples in less than 5 min. A diagnostic index based on the relative levels of the main fatty acids including distinctive Delta5-olefinic acids was used to identify botanical origins. Results revealed the occurrence of the following Pinus spp. in commercial products: P. pinea, P. koraiensis, P. gerardiana, P. armandii and P. massoniana. The later two species, known as Chinese white pine and Chinese red pine, are only cultivated in China and are not listed as common source of edible pine nuts by the Food and Agriculture Organization (FAO). The present study shows that the botanical origin of pine nuts can be identified in products based on the fatty acid profile.

  17. Estimating groundwater evapotranspiration by a subtropical pine plantation using diurnal water table fluctuations: Implications from night-time water use

    Science.gov (United States)

    Fan, Junliang; Ostergaard, Kasper T.; Guyot, Adrien; Fujiwara, Stephen; Lockington, David A.

    2016-11-01

    Exotic pine plantations have replaced large areas of the native forests for timber production in the subtropical coastal Australia. To evaluate potential impacts of changes in vegetation on local groundwater discharge, we estimated groundwater evapotranspiration (ETg) by the pine plantation using diurnal water table fluctuations for the dry season of 2012 from August 1st to December 31st. The modified White method was used to estimate the ETg, considering the night-time water use by pine trees (Tn). Depth-dependent specific yields were also determined both experimentally and numerically for estimation of ETg. Night-time water use by pine trees was comprehensively investigated using a combination of groundwater level, sap flow, tree growth, specific yield, soil matric potential and climatic variables measurements. Results reveal a constant average transpiration flux of 0.02 mm h-1 at the plot scale from 23:00 to 05:00 during the study period, which verified the presence of night-time water use. The total ETg for the period investigated was 259.0 mm with an accumulated Tn of 64.5 mm, resulting in an error of 25% on accumulated evapotranspiration from the groundwater if night-time water use was neglected. The results indicate that the development of commercial pine plantations may result in groundwater losses in these areas. It is also recommended that any future application of diurnal water table fluctuation based methods investigate the validity of the zero night-time water use assumption prior to use.

  18. Modeling the Differential Sensitivity of Loblolly Pine to Climatic Change Using Tree Rings

    Science.gov (United States)

    Edward R. Cook; Warren L. Nance; Paul J. Krusic; James Grissom

    1998-01-01

    The Southwide Pine Seed Source Study (SPSSS) was undertaken in 1951 to determine to what extent inherent geographic variation in four southern pine species (loblolly pine, Pinus taeda L.; slash pine, P. elliottii Engelm. var. elliottii; longleaf pine, P. palutris Mill.; and shortleaf pine,

  19. Predictions of fire behavior and resistance to control: for use with photo series for the ponderosa pine type, ponderosa pine and associated species type, and lodgepole pine type.

    Science.gov (United States)

    Franklin R. Ward; David V. Sandberg

    1981-01-01

    This publication presents tables on the behavior of fire and the resistance of fuels to control. The information is to be used with the publication, "Photo Series for Quantifying Forest Residues in the Ponderosa Pine Type, Ponderosa Pine and Associated Species Type, Lodgepole Pine Type" (Maxwell, Wayne G.; Ward, Franklin R. 1976. Gen. Tech. Rep. PNW-GTR-052....

  20. TBT recommends : Courtney Pine. Hansa disco night

    Index Scriptorium Estoniae

    2005-01-01

    Inglise jazzsaksofonisti Courtney Pine heliplaadi "Resistance" esitluskontserdist 15. dets. Rock Cafés Tallinnas. Inglise laulja Chris Norman läti ansamblitega üritusel "Hansa disco night Nr.4" 9. dets. Kipsala Hallis Riias

  1. Longleaf Pine Survival, Growth, and Recruitment Experiment

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This experiment was to determine mean survivorship, growth rate, and recruitment rate of longleaf pine seedlings planted on different soil types on the refuge. Open...

  2. Natural History of the Southern Pine Beetle

    Science.gov (United States)

    Fred P. Hain; Adrian J. Duehl; Micah J. Gardner; Thomas L. Payne

    2011-01-01

    The southern pine beetle (SPB) is a tree killer of southern yellow pines. All life stages—eggs, larvae, pupae, and adults—infest the inner bark or phloem tissue of the host tree. Adult beetles overcome the tree’s defenses through a mass-attack phenomenon. They are attracted to the tree by a pheromone system consisting of volatiles produced by the beetles and the host....

  3. Southern Pine Beetle Population Dynamics in Trees

    Science.gov (United States)

    Fred M. Stephen

    2011-01-01

    Successful mass attack of a pine tree by the southern pine beetle (SPB) results in the tree’s death and provides opportunity for colonization of the new phloem resource and reproduction by a new generation of SPBs plus hundreds of associated species of insects, mites, fungi, and nematodes. The within-tree portions of the SPB life history can be divided into component...

  4. Carbon Costs of Constitutive and Expressed Resistance to a Non-Native Pathogen in Limber Pine.

    Science.gov (United States)

    Vogan, Patrick J; Schoettle, Anna W

    2016-01-01

    Increasing the frequency of resistance to the non-native fungus Cronartium ribicola (causative agent of white pine blister rust, WPBR) in limber pine populations is a primary management objective to sustain high-elevation forest communities. However, it is not known to what extent genetic disease resistance is costly to plant growth or carbon economy. In this study, we measured growth and leaf-level physiology in (1) seedling families from seed trees that have previously been inferred to carry or not carry Cr4, the dominant R gene allele conferring complete, gene-for-gene resistance to WPBR in limber pine, and (2) populations that were and were not infected with C. ribicola. We found that, in the absence of C. ribicola exposure, there was no significant difference in carbon relations between families born from seed trees that harbor the resistance allele compared to those that lack it, either to plant growth and phenology or leaf-level photosynthetic traits. However, post-infection with C. ribicola, growth was significantly reduced in inoculation survivors expressing complete resistance compared to uninoculated seedlings. Furthermore, inoculation survivors exhibited significant increases in a suite of traits including photosynthetic rate, respiration rate, leaf N, and stomatal conductance and a decrease in photosynthetic water-use efficiency. The lack of constitutive carbon costs associated with Cr4 resistance in non-stressed limber pine is consistent with a previous report that the R gene allele is not under selection in the absence of C. ribicola and suggests that host resistance may not bear a constitutive cost in pathosystems that have not coevolved. However, under challenge by C. ribicola, complete resistance to WPBR in limber pine has a significant cost to plant growth, though enhanced carbon acquisition post-infection may offset this somewhat. These costs and effects on performance further complicate predictions of this species' response in warmer future

  5. Large-scale thinning, ponderosa pine, and mountain pine beetle in the Black Hills, USA

    Science.gov (United States)

    Jose F. Negron; Kurt K. Allen; Angie Ambourn; Blaine Cook; Kenneth Marchand

    2017-01-01

    Mountain pine beetle (Dendroctonus ponderosae Hopkins) (MPB), can cause extensive ponderosa pine (Pinus ponderosa Dougl. ex Laws.) mortality in the Black Hills of South Dakota and Wyoming, USA. Lower tree densities have been associated with reduced MPB-caused tree mortality, but few studies have reported on large-scale thinning and most data come from small plots that...

  6. Preparation of Fe-cored carbon nanomaterials from mountain pine beetle-killed pine wood

    Science.gov (United States)

    Sung Phil Mun; Zhiyong Cai; Jilei Zhang

    2015-01-01

    The mountain pine beetle-killed lodgepole pine (Pinus contorta) wood treated with iron (III) nitrate solution was used for the preparation of Fe-cored carbon nanomaterials (Fe-CNs) under various carbonization temperatures. The carbonization yield of Fe-treated sample (5% as Fe) was always 1–3% higher (after ash compensation) than that of the non-...

  7. Biology of a Pine Needle Sheath Midge, Contarinia Acuta Gagne (Diptera: Cecidomyiidae), on Loblolly Pine

    Science.gov (United States)

    Julie C. Weatherby; John C. Moser; Raymond J. Gagné; Huey N. Wallace

    1989-01-01

    The biology of a pine needle sheath midge, Contarinia acuta Gagné is described for a new host in Louisiana. This midge was found feeding within the needle sheath on elongating needles of loblolly pine, P. taeda L. Needle droop and partial defoliation were evident on heavily infested trees. Overwintering C. acuta...

  8. Genetic and phenotypic resistance in lodgepole pine to attack by mountain pine beetle

    Science.gov (United States)

    Alvin Yanchuk; Kimberly Wallin

    2007-01-01

    The recent outbreak of mountain pine beetle (MPB) (Dendroctonus ponderosae) in British Columbia provided an opportunity to examine genetic variation of differential attack and resistance in a 20-year old lodgepole pine open-pollinated (OP) family trial. Approximately 2,500 individuals from 180 OP parent-tree collections (~14 trees per parent), from...

  9. An old-growth definition for xeric pine and pine-oak woodlands

    Science.gov (United States)

    Paul A. Murphy; Gregory J. Nowacki

    1997-01-01

    The old-growth characteristics of xeric pine and pine-oak woodlands are summarized from a survey of the available scientific literature. This type occurs throughout the South and is usually found as small inclusions on ridgetops and south-facing slopes in the mountains or on excessively drained, sandy uplands in gentle terrain. Historically, this type has had frequent...

  10. Oleoresin characteristics of progeny of loblolly pines that escaped attack by southern pine beetle

    Science.gov (United States)

    B.L. Strom; R.A. Goyer; L.L. Ingram; G.D.L. Boyd; L.H. Lott

    2002-01-01

    Oleoresin characteristics of first-generation (F1) progeny of loblolly pines (Pinus taeda L.) that escaped mortality from the southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Scolytidae), despite heavy mortality of neighbors, were evaluated and compared to trees from a general (i.e., trees...

  11. Local and general above-stump biomass functions for loblolly pine and slash pine trees

    Science.gov (United States)

    Carlos A. Gonzalez-Beneke; Salvador Gezan; Tmothy J. Albaugh; H. Lee Allen; Harold E. Burkhart; Thomas R. Fox; Eric J. Jokela; Christopher Maier; Timothy A. Martin; Rafael A. Rubilar; Lisa J. Samuelson

    2014-01-01

    There is an increasing interest in estimating biomass for loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm. var. elliottii), two of the most ecologically and commercially important tree species in North America. The majority of the available individual-tree allometric models are local, relying on stem diameter outside bark at breast height (dbh)...

  12. Mountain pine beetle-killed lodgepole pine for the production of submicron lignocellulose fibrils

    Science.gov (United States)

    Ingrid Hoeger; Rolland Gleisner; Jose Negron; Orlando J. Rojas; J. Y. Zhu

    2014-01-01

    The elevated levels of tree mortality attributed to mountain pine beetle (MPB) (Dendroctonus ponderosae Hopkins) in western North American forests create forest management challenges. This investigation introduces the production of submicron or nanometer lignocellulose fibrils for value-added materials from the widely available resource represented by dead pines after...

  13. Mountain pine beetle-killed trees as snags in Black Hills ponderosa pine stands

    Science.gov (United States)

    J. M. Schmid; S. A. Mata; W. C. Schaupp

    2009-01-01

    Mountain pine beetle-killed ponderosa pine trees in three stands of different stocking levels near Bear Mountain in the Black Hills National Forest were surveyed over a 5-year period to determine how long they persisted as unbroken snags. Rate of breakage varied during the first 5 years after MPB infestation: only one tree broke during the first 2 years in the three...

  14. A Study of the SDSS White Dwarf Component in the LSPM Proper Motion Survey

    Science.gov (United States)

    Darveau-Bernier, A.; Bergeron, P.; Lépine, S.

    2017-03-01

    We present a model atmosphere analysis of the white dwarfs identified in the Sloan Digital Sky Survey with proper motions measured in the LSPM proper motion survey of Lépine et al. We rely on reduced proper motion diagrams to build a sample of white dwarfs in the SDSS footprint, and cross correlate this sample with the SDSS spectroscopic database to understand the systematics related to completeness, contamination, WD+M dwarf binaries, reddening, etc. We then determine a white dwarf luminosity function for this sample using various methods.

  15. Pine Savannah restoration monitoring –Tammany Holding Tract

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Monitor the response of pine flatwood/savannah to restoration and management actions including brush removal, prescribed burning and planting longleaf pine...

  16. The pine-oak rusts: How forest tree species connect

    Science.gov (United States)

    D. R. Vogler

    2008-01-01

    The pine-oak rust fungi, which live out their lives as pathogens on pines and oaks, have multiple spore states and complex life cycles. Because they can be severe pathogens of pines, much of what we know about them depends on how damaging they are to management of pine forests for timber, recreation, and ecosystem values. Widely distributed in North America, they are...

  17. Simulating the impacts of southern pine beetle and fire on the dynamics of xerophytic pine landscapes in the southern Appalachians

    Science.gov (United States)

    J.D. Waldron; C.W. Lafon; R.N. Coulson; D.M. Cairns; M.D. Tchakerian; A. Birt; K.D. Klepzig

    2007-01-01

    Question: Can fire be used to maintain Yellow pine (Pinus subgenus Diploxylon) stands disturbed by periodic outbreaks of southern pine beetle?Location: Southern Appalachian Mountains, USA.Methods: We used LANDIS to model vegetation disturbance and succession...

  18. Copper Deficiency in Pine Plantations in the Georgia Coastal Plain

    Science.gov (United States)

    David B. South; William A. Carey; Donald A. Johnson

    2004-01-01

    Copper deficiencies have been observed on several intensively managed pine plantations in the Georgia Coastal Plain. Loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii var. elliottii Engelm.) displayed plagiotropic growth within a year after planting on very acid, sandy soils. Typically, symptoms show...

  19. Top Grafting Loblolly Pine in the Western Gulf Region

    Science.gov (United States)

    Geoffrey D. Goading; Floyd E. Bridgwater; David L. Bramlett; William J. Lowe

    1999-01-01

    Flowering data were collected from top grafts made in 1996 and 1997 at the Mississippi Forestry Commission's Craig Seed Orchard near Lumberton, MS. Scion material from twenty loblolly pine (Pinus taeda) second-generation selections was grafted onto five loblolly pine and five slash pine (P. elliottii) interstocks. All...

  20. Direct seeding of pitch pine in southern New Jersey

    Science.gov (United States)

    S. Little; C. B. Cranmer; H. A. Somes

    1958-01-01

    There is not enough pine reproduction in the woodlands of southern New Jersey. This increasingly important problem, which plagues the state's Pine Region, is especially severe where seed sources for natural regeneration are poor. In some of these areas, pulpwood cuttings have removed all pines large enough to bear many cones. In other areas, wildfires have killed...

  1. Avian response to pine restoration at Peck Ranch Conservation Area

    Science.gov (United States)

    Richard Clawson; Carrie Steen; Kim Houf; Terry Thompson

    2007-01-01

    Midco Pine Flats is a 2,223-acre region of Peck Ranch Conservation Area (CA) that is classified as a pine-oak plains land type association. Extensive logging in the early 1900s removed most overstory shortleaf pine allowing oak to become the primary overstory component. In 2000, Missouri Department of Conservation staff initiated a pineoak woodland restoration project...

  2. Historic forests and endemic mountain pine beetle and dwarf mistletoe

    Science.gov (United States)

    Jose Negron

    2012-01-01

    Mountain pine beetle has always been a significant disturbance agent in ponderosa and lodgepole pine forests in Colorado. Most studies have examined the impacts to forest structure associated with epidemic populations of a single disturbance agent. In this paper we address the role of endemic populations of mountain pine and their interactions with dwarf mistletoe...

  3. Limber pine conservation strategy: Recommendations for Rocky Mountain National Park

    Science.gov (United States)

    Christy M. Cleaver; Anna W. Schoettle; Kelly S. Burns; J. Jeff Connor

    2015-01-01

    Limber pine (Pinus flexilis), designated by Rocky Mountain National Park (RMNP) as a Species of Management Concern, is a keystone species that maintains ecosystem structure, function, and biodiversity in the park. In RMNP, limber pine is declining due to the interacting effects of recent severe droughts and the climate-exacerbated mountain pine beetle (...

  4. Repeatability for oleoresin yield determinations in southern pines

    Science.gov (United States)

    J. H. Roberds; Brian L. Strom

    2004-01-01

    Flow of constitutive oleoresin is believed to be a major component of tree defense against attack by the southern pine pine beetle (Dendroctonus frontalis Zimmermann). Pines that exude large quantities of oleoresin are considered to be most capable of preventing or obstructing colonization by this destructive insect herbivore (Hodges et al. 1979;...

  5. A race against beetles: Conservation of limber pine

    Science.gov (United States)

    Anna Schoettle; Kelly Burns; Sheryl Costello; Jeff Witcosky; Brian Howell; Jeff Connor

    2008-01-01

    The Rocky Mountain Research Station, Forest Health Management, Rocky Mountain National Park, Arapaho-Roosevelt National Forest, and the Medicine Bow NF are coordinating efforts to conserve limber pine along the Front Range of the southern Rockies. Mountain pine beetle (MPB) populations are increasing dramatically in the area and killing limber pines in their...

  6. Fire Monitoring: Effects of Scorch in Louisiana's Pine Forests

    Science.gov (United States)

    James D. Haywood; Mary Anne Sword; Finis L. Harris

    2004-01-01

    Frequent growing-season burning is essential for restoring longleaf pine (Pinus palustris Mill.) plant communities to open parklike landscapes. However, fire can be a destructive force, reducing productivity and causing mortality among overstory longleaf pine trees. On two central Louisiana sites, severe crown scorch reduced longleaf pine diameter...

  7. Early Results of Mycorrhizal Inoculation of Pine in Puerto Rico

    Science.gov (United States)

    Charles B. Briscoe

    1959-01-01

    Despite the presence of more than 500 native tree species in Puerto Rico, many efforts have been made to introduce pine. These attempts have been made because, compared to the native species, pine has a much wider accepted market and has the longer fiber necessary as a component of kraft papers. In addition pine produces higher yields on poor sites, and its...

  8. Tree growth in thinned and unthinned White fir stands 20 years after a Douglas-fir tussock moth outbreak.

    Science.gov (United States)

    Boyd E. Wickman

    1988-01-01

    Twenty-year postoutbreak growth was compared in thinned and unthinned, severely defoliated stands. Basal area of unthinned white fir has declined 37 percent and pine basal area has increased 32 percent since 1964. The stand thinned in 1960 has the lowest basal area in the study area, but the greatest tree growth before and after the outbreak. All defoliated fir are...

  9. Evaluation of veneer yields and grades from yellow-poplar, white oak, and sweetgum from the southeast

    Science.gov (United States)

    Robert H. McAlister

    1980-01-01

    Dry volume yields and standard grades of veneer are given for yellow-poplar, sweetgum, and white oak by tree diameter and location within the stem. Results show that the typical stands of mixed southern pine and hardwood timer yield enough veneer to utilize almost 90 percent of the stand volume in the production of COM-PLY lumber and panels

  10. Mountain pine beetle in lodgepole pine: mortality and fire implications (Project INT-F-07-03)

    Science.gov (United States)

    Jennifer G. Klutsch; Daniel R. West; Mike A Battaglia; Sheryl L. Costello; José F. Negrón; Charles C. Rhoades; John Popp; Rick Caissie

    2013-01-01

    Mountain pine beetle (Dendroctonus ponderosae Hopkins) has infested over 2 million acres of lodgepole pine (Pinus contorta Dougl. ex Loud.) forest since an outbreak began approximately in 2000 in north central Colorado. The tree mortality from mountain pine beetle outbreaks has the potential to alter stand composition and stand...

  11. Historic Shortleaf Pine (Pinus echinata Mill.) Abundance and Fire Frequency in a Mixed Oak - Pine Forest (MOFEP, Site 8)

    Science.gov (United States)

    Richard P. Guyette; Daniel C. Dey

    1997-01-01

    Historic and present day shortleaf pine (Pinus echinata Mill.) abundance was measured and compared using 84 plots along 16 transects in site 8 of the Missouri Ozark Forest Ecosystem Project. Remnant pine stumps were used to estimate historic pine density and to construct a dendrochronological record of fire frequency. There has been a 66-percent...

  12. Growth performance of loblolly shortleaf, and pitch X loblolly pine hybrid growing along the western margin of commercial pine range

    Science.gov (United States)

    K.C. Dipesh; Rodney E. Will; Thomas C Hennessey; Thomas B. Lynch; Robert Heinemann; Randal Holeman

    2015-01-01

    Expansion of the commercial pine range is one of the opportunities to improve forest production and counterbalance the loss of forest land to other uses. The potential genotypes for the purpose are fast-growing loblolly pine (Pinus taeda L.), the slower growing, but more drought tolerant shortleaf pine (P. echinata Mill.), and the more cold tolerant pitch x loblolly...

  13. Fertilizer responses of longleaf pine trees within a loblolly pine plantation: separating direct effects from competition effects

    Science.gov (United States)

    Peter H Anderson; Kurt H. Johnsen

    2009-01-01

    Evidence is mixed on how well longleaf pine (Pinus palustris Mill.) responds to increased soil nitrogen via fertilization. We examined growth and physiological responses of volunteer longleaf pine trees within an intensive loblolly pine (Pinus taeda L.) fertilization experiment. Fertilizer was applied annually following thinning at age 8 years (late 1992) at rates...

  14. Revivification of a method for identifying longleaf pine timber and its application to southern pine relicts in southeastern Virginia

    Science.gov (United States)

    Thomas L. Eberhardt; Philip M. Sheridan; Arvind A.R. Bhuta

    2011-01-01

    Abstract: Longleaf pine (Pinus palustris Mill.) cannot be distinguished from the other southern pines based on wood anatomy alone. A method that involves measuring pith and second annual ring diameters, reported by Arthur Koehler in 1932 (The Southern Lumberman, 145: 36–37), was revisited as an option for identifying longleaf pine timbers and stumps. Cross-section...

  15. Solar Decathlon 2015 - Indigo Pine

    Energy Technology Data Exchange (ETDEWEB)

    Blouin, Vincent [Clemson Univ., SC (United States)

    2016-05-30

    The Solar Decathlon competition challenges students across the country to design and build a net-zero, market ready solar powered home. The bi-annual competition consists of ten contests that seek to balance the home on a scale of innovation. The ten contests were selected by to organizers to address all aspects of housing, including architecture, market appeal, engineering, communication, affordability, comfort, appliances, home life, commuting, and energy balance. Along with the criteria associated with the contests, the competition includes several design constraints that mirror those found in practical housing applications: including (but certainly not limited to) lot lines, building height, and ADA accessibility. The Solar Decathlon 2015 was held at the Orange Country Great Park in Irvine, CA. The 2015 competition was Clemson University’s first entry into the Solar Decathlon and was a notable milestone in the continued development of a home, called Indigo Pine. From the beginning, the team reconsidered the notion of sustainability as related to both the design of a home and the competition itself. The designing and building process for the home reflects a process which seamlessly moves between thinking and making to develop a comprehensive design with a method and innovations that challenge the conventions of residential construction. This report is a summary of the activities of the Clemson University team during the two-year duration of the project leading to the participation in the 2015 Solar Decathlon competition in Irvine California.

  16. The most important parasitic and saprophytic fungi in Austrian pine and Scots pine plantations in Serbia

    Directory of Open Access Journals (Sweden)

    Karadžić Dragan

    2008-01-01

    Full Text Available In Austrian pine plantations in Serbia, the greatest damage is caused by the fungi Mycosphaerella pini, Sphaeropsis sapinea, Cenangium ferruginosum, Germmeniella abietina (in the mountain regions and occasionally Armillaria spp., Lophodermium spp. (seditiosum, conigenum, pinastri and Cyclaneusma niveum. In Scots pine plantations, the greatest damage is caused by the fungi Heterobasidion annosum (especially in plantations on sandy soils, Armillaria spp, Lophodermium seditiosum, L. pinastri, Cyclaneusma minus and Sphaeropsis sapinea. Damage caused by rust fungi (Coleosporium sennecionis, Melampsora pinitorqua and Cronartium flaccidum occurs less frequently. In mountainous regions in Scots pine plantations, great damage is caused by Phacidium infestans, Lophodermella sulcigena and Gremmeniella abietina.

  17. Vanishing White Matter Disease

    Science.gov (United States)

    ... In Memory Of Obituaries Contact Us Donate Vanishing White Matter Disease What is Vanishing White Matter Disease? ... of the genetic basis of VWM was a great step forward. First of all, it allows genetic ...

  18. Seedling regeneration on decayed pine logs after the deforestation events caused by pine wilt disease

    Directory of Open Access Journals (Sweden)

    Y. Fukasawa

    2016-12-01

    Full Text Available Coarse woody debris (CWD forms an important habitat suitable for tree seedling establishment, and the CWD decay process influences tree seedling community. In Japan, a severe dieback of Pinus densiflora Sieb. & Zucc. caused by pine wilt disease (PWD damaged huge areas of pine stands but creates huge mass of pine CWD. It is important to know the factors influencing seedling colonization on pine CWD and their variations among geographical gradient in Japan to expect forest regeneration in post-PWD stands. I conducted field surveys on the effects of latitude, climates, light condition, decay type of pine logs, and log diameter on tree seedling colonization at ten geographically distinct sites in Japan. In total, 59 tree taxa were recorded as seedlings on pine logs. Among them, 13 species were recorded from more than five sites as adult trees or seedlings and were used for the analyses. A generalized linear model showed that seedling colonization of Pinus densiflora was negatively associated with brown rot in sapwood, while that of Rhus trichocarpa was positively associated with brown rot in heartwood. Regeneration of Ilex macropoda had no relationships with wood decay type but negatively associated with latitude and MAT, while positively with log diameter. These results suggested that wood decay type is a strong determinant of seedling establishment for certain tree species, even at a wide geographical scale; however, the effect is tree species specific.

  19. Mountain Pine Beetle Dynamics and Reproductive Success in Post-Fire Lodgepole and Ponderosa Pine Forests in Northeastern Utah

    Science.gov (United States)

    Lerch, Andrew P.; Pfammatter, Jesse A.

    2016-01-01

    Fire injury can increase tree susceptibility to some bark beetles (Curculionidae, Scolytinae), but whether wildfires can trigger outbreaks of species such as mountain pine beetle (Dendroctonus ponderosae Hopkins) is not well understood. We monitored 1173 lodgepole (Pinus contorta var. latifolia Doug.) and 599 ponderosa (Pinus ponderosa Doug. ex Law) pines for three years post-wildfire in the Uinta Mountains of northeastern Utah in an area with locally endemic mountain pine beetle. We examined how the degree and type of fire injury influenced beetle attacks, brood production, and subsequent tree mortality, and related these to beetle population changes over time. Mountain pine beetle population levels were high the first two post-fire years in lodgepole pine, and then declined. In ponderosa pine, populations declined each year after initial post-fire sampling. Compared to trees with strip or failed attacks, mass attacks occurred on trees with greater fire injury, in both species. Overall, a higher degree of damage to crowns and boles was associated with higher attack rates in ponderosa pines, but additional injury was more likely to decrease attack rates in lodgepole pines. In lodgepole pine, attacks were initially concentrated on fire-injured trees, but during subsequent years beetles attacked substantial numbers of uninjured trees. In ponderosa pine, attacks were primarily on injured trees each year, although these stands were more heavily burned and had few uninjured trees. In total, 46% of all lodgepole and 56% of ponderosa pines underwent some degree of attack. Adult brood emergence within caged bole sections decreased with increasing bole char in lodgepole pine but increased in ponderosa pine, however these relationships did not scale to whole trees. Mountain pine beetle populations in both tree species four years post-fire were substantially lower than the year after fire, and wildfire did not result in population outbreaks. PMID:27783632

  20. Mountain Pine Beetle Dynamics and Reproductive Success in Post-Fire Lodgepole and Ponderosa Pine Forests in Northeastern Utah.

    Directory of Open Access Journals (Sweden)

    Andrew P Lerch

    Full Text Available Fire injury can increase tree susceptibility to some bark beetles (Curculionidae, Scolytinae, but whether wildfires can trigger outbreaks of species such as mountain pine beetle (Dendroctonus ponderosae Hopkins is not well understood. We monitored 1173 lodgepole (Pinus contorta var. latifolia Doug. and 599 ponderosa (Pinus ponderosa Doug. ex Law pines for three years post-wildfire in the Uinta Mountains of northeastern Utah in an area with locally endemic mountain pine beetle. We examined how the degree and type of fire injury influenced beetle attacks, brood production, and subsequent tree mortality, and related these to beetle population changes over time. Mountain pine beetle population levels were high the first two post-fire years in lodgepole pine, and then declined. In ponderosa pine, populations declined each year after initial post-fire sampling. Compared to trees with strip or failed attacks, mass attacks occurred on trees with greater fire injury, in both species. Overall, a higher degree of damage to crowns and boles was associated with higher attack rates in ponderosa pines, but additional injury was more likely to decrease attack rates in lodgepole pines. In lodgepole pine, attacks were initially concentrated on fire-injured trees, but during subsequent years beetles attacked substantial numbers of uninjured trees. In ponderosa pine, attacks were primarily on injured trees each year, although these stands were more heavily burned and had few uninjured trees. In total, 46% of all lodgepole and 56% of ponderosa pines underwent some degree of attack. Adult brood emergence within caged bole sections decreased with increasing bole char in lodgepole pine but increased in ponderosa pine, however these relationships did not scale to whole trees. Mountain pine beetle populations in both tree species four years post-fire were substantially lower than the year after fire, and wildfire did not result in population outbreaks.

  1. Soil property changes during loblolly pine production

    Science.gov (United States)

    R. Wayne Skaggs; Devendra M. Amatya; G.M. Chescheir; Christine D. Blanton

    2006-01-01

    Three watersheds, each approximately 25 ha, were instrumented to measure and record drainage rate, water table depth, rainfall and meteorological data. Data continuously collected on the site since 1988 include response of hydrologic and water quality variables for nearly all growth stages of a Loblolly pine plantation. Data for drainage outflow rates and water table...

  2. Thermomechanical pulping of loblolly pine juvenile wood

    Science.gov (United States)

    Gary C. Myers

    2002-01-01

    Intensive forest management, with a heavy emphasis on ecosystem management and restoring or maintaining forest health, will result in the removal of smaller diameter materials from the forest. This increases the probability of higher juvenile wood content in the harvested materials. The purpose of this study was to compare the performance of loblolly pine juvenile and...

  3. Factors Affecting Survival of Longleaf Pine Seedlings

    Science.gov (United States)

    John S. Kush; Ralph S. Meldahl; William D. Boyer

    2004-01-01

    Longleaf pine may be managed most efficiently in large even-aged stands. Past research has shown that the effect of trees surrounding the openings (gaps) or the use of fire is a complicating factor, especially with small openings. Longleaf seedlings are considered more susceptible to fire under and nearer to standing trees, and seedling size, kind of fire, soil type,...

  4. Insects associated with ponderosa pine in Colorado

    Science.gov (United States)

    Robert E. Stevens; J. Wayne Brewer; David A. Leatherman

    1980-01-01

    Ponderosa pine serves as a host for a wide variety of insects. Many of these, including all the particularly destructive ones in Colorado, are discussed in this report. Included are a key to the major insect groups, an annotated list of the major groups, a glossary, and a list of references.

  5. Landscape dynamics of mountain pine beetles

    Science.gov (United States)

    John E. Lundquist; Robin M. Reich

    2014-01-01

    The magnitude and urgency of current mountain pine beetle outbreaks in the western United States and Canada have resulted in numerous studies of the dynamics and impacts of these insects in forested ecosystems. This paper reviews some of the aspects of the spatial dynamics and landscape ecology of this bark beetle. Landscape heterogeneity influences dispersal patterns...

  6. Artificial ripening of sugar pine seeds

    Science.gov (United States)

    Stanley L. Krugman

    1966-01-01

    Immature sugar pine seeds were collected and ripened either in the cone or in moist vermiculate. Seeds collected before the second week of August could not be artificially ripened and the causes for these failures were investigated. After the second week of August, immature seeds could be brought to maturity. A practical method for a commercial operation should be...

  7. Geographic variation in ponderosa pine leader growth

    Science.gov (United States)

    James W. Hanover

    1963-01-01

    Growth of the shoot apices of 91 trees in a 45-year-old Pinus ponderosa Laws. provenance test was measured periodically with a transit. Analysis of the measurements led to the following conclusions: (1) 19 races of ponderosa pine planted near Priest River, Idaho, showed phenological, morphological, or physiological variation in six characters: date of beginning growth...

  8. Status of Pituophis ruthveni (Louisiana pine snake)

    Science.gov (United States)

    D. Craig Rudolph; Shirley J. Burgdorf; Richard R. Schaefer; Richard N. Conner; Ricky W. Maxey

    2006-01-01

    Extensive trapping surveys across the historical range of Pituophis ruthveni (Louisiana Pine Snake) suggest that extant populations are extremely small and limited to remnant patches of suitable habitat in a highly fragmented landscape. Evaluation of habitat at all known historical localities of P. ruthveni documents the widespread...

  9. Electromagnetic Treatment of Loblolly Pine Seeds

    Science.gov (United States)

    James P. Barnett; Stanley L. Krugman

    1989-01-01

    Loblolly pine (Pinus taeda L.) seeds were exposed to an electromagnetic radiation treatment (Energy Transfer Process, marketed by the Energy Transfer Corporation), and the effects of the treatments on seed germination, seedling development, disease resistance, and field performance of seedlings were evaluated. None of the evaluated variables showed...

  10. Comparing Planting Tools for Container Longleaf Pine

    Science.gov (United States)

    Daniel J. Leduc; James D. Haywood; Shi-Jean Susana Sung

    2011-01-01

    We examined if compressing the soil to make a planting hole with a custom-built, solid round dibble versus coring the soil with a commercially available tube dibble influenced container-grown longleaf pine seedling development differently. Seven teen months after planting, the planting tool did not significantly affect root collar diameter, shoot or root mass, root-to-...

  11. Wollemi Pine: Living Fossil from Jurassic Landscape

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 8; Issue 8. Wollemi Pine: Living Fossil from Jurassic Landscape. N S Leela. General Article Volume 8 Issue 8 August 2003 pp 43-47. Fulltext. Click here to view fulltext PDF. Permanent link: http://www.ias.ac.in/article/fulltext/reso/008/08/0043-0047 ...

  12. Prescribed burning in southwestern ponderosa pine

    Science.gov (United States)

    Stephen S Sackett; Sally M Haase; Michael G Harrington

    1996-01-01

    Prescribed burning is an effective way of restoring the fire process to ponderosa pine (Pinus ponderosa Dougl. ex Laws.) ecosystems of the Southwest. If used judiciously, fire can provide valuable effects for hazard reduction, natural regeneration, thinning, vegetation revitalization, and in general, better forest health. Relatively short burning...

  13. Specific heat of ovendry loblolly pine wood

    Science.gov (United States)

    Charles W. McMillin

    1969-01-01

    In the range of 333 K to 413 K, the specific heat of ovendry loblolly pine (Pinus taeda L.) wood was expressed by a linear function of temperature. No relationship was detected with specific gravity, growth rate, or distance from the pith; nor were differences found between earlywood and latewood.

  14. Studies in western yellow pine nursery practice

    Science.gov (United States)

    Donald R. Brewster; J. A. Larsen

    1925-01-01

    In 1912 and 1913, when nursery experiments were started under direction of the then "Priest River'' Forest Experiment Station, at Priest River, Idaho, and elsewhere, western yellow pine (Pinus ponderosa) was one of the principal species being planted on a large scale in the northern Rocky Mountain region and millions of plants were being raised each year...

  15. Silvical characteristics of pitch pine (Pinus rigida)

    Science.gov (United States)

    S. Little

    1959-01-01

    Pitch pine (Pinus rigida Mill.) grows over a wide geographical range - from central Maine to New York and extreme southeastern Ontario, south to Virginia and southern Ohio, and in the mountains to eastern Tennessee, northern Georgia, and western South Carolina. Because it grows mostly on the poorer soils, its distribution is spotty.

  16. Production of Oleoresin from southern pine trees.

    Science.gov (United States)

    T.A. Harrington

    1969-01-01

    Developments in techniques, methods, and equipment for producing oleoresin from the living pine are discussed. Particular emphasis is given to the need for mechanized production methods if this ancient industry is to survive the competition from other sources of rosin and turpentine.

  17. Economic Impacts of the Southern Pine Beetle

    Science.gov (United States)

    John M. Pye; Thomas P. Holmes; Jeffrey P. Prestemon; David N. Wear

    2011-01-01

    This paper provides an overview of the timber economic impacts of the southern pine beetle (SPB). Although we anticipate that SPB outbreaks cause substantial economic losses to households that consume the nonmarket economic services provided by healthy forests, we have narrowly focused our attention here on changes in values to timber growers and wood-products...

  18. Red Rot of Ponderosa Pine (FIDL)

    Science.gov (United States)

    Stuart R. Andrews

    1971-01-01

    Red rot caused by the fungus Polyporus anceps Peck is the most important heart rot of ponderosa pine (Pinus ponderosa Laws.) in the Southwest (in Arizona and New Mexico), the Black Hills of South Dakota, and some localities in Colorado, Montana, and Idaho. It causes only insignificant losses to this species elsewhere in the West. The red rot fungus rarely attacks other...

  19. Growth and yield of shortleaf pine

    Science.gov (United States)

    Paul A. Murphy

    1986-01-01

    A survey of available growth and yield information for shortleaf pine (Pinus echinata Mill.) is given. The kinds of studies and data sources that produce this information are also evaluated, and an example of how a growth and yield model can be used to answer management questions is illustrated. Guidelines are given for using growth and yield models, and needs for...

  20. Direct-seedling pines in the south

    Science.gov (United States)

    Harold J. Derr; William F. Mann

    1971-01-01

    Direct seeding of the southern pines is a versatile reforestation technique that is being widely accepted by land managers. On many sites it is more economical than planting nursery-grown seedlings or waiting for natural reproduction. It is applicable on some sites where access, terrain, or drainage conditions make planting difficult. Commercial trials have proved it...

  1. Parasitoids of the Southern Pine Beetle

    Science.gov (United States)

    C. Wayne Berisford

    2011-01-01

    Hymenopterous parasitoids make up a significant portion of the natural enemy complex associated with the southern pine beetle (SPB). Collectively, parasitoids can affect the growth of individual SPB infestations and area populations by reducing the survival rates of developing SPB larval/pupal broods. A substantial body of information on parasitoids has been...

  2. Cone and Seed Maturation of Southern Pines

    Science.gov (United States)

    James P. Barnett

    1976-01-01

    If slightly reduced yields and viability are acceptable, loblolly and slash cone collections can begin 2 to 3 weeks before maturity if the cones are stored before processing. Longleaf(P. palestris Mill.) pine cones should be collected only when mature, as storage decreased germination of seeds from immature cones. Biochemical analyses to determine reducing sugar...

  3. Extrusion pretreatment of pine wood chips.

    Science.gov (United States)

    Karunanithy, C; Muthukumarappan, K; Gibbons, W R

    2012-05-01

    Pretreatment is the first step to open up lignocellulose structure in the conversion of biomass to biofuels. Extrusion can be a viable pretreatment method due to its ability to simultaneously expose biomass to a range of disruptive conditions in a continuous flow process. Extruder screw speed, barrel temperature, and feedstock moisture content are important factors that can influence sugar recovery from biomass. Hence, the current study was undertaken to investigate the effects of these parameters on extrusion pretreatment of pine wood chips. Pine wood chip at 25, 35, and 45 % wb moisture content were pretreated at various barrel temperatures (100, 140, and 180 °C) and screw speeds (100, 150, and 200 rpm) using a screw with compression ratios of 3:1. The pretreated pine wood chips were subjected to standard enzymatic hydrolysis followed by sugar and byproducts quantification. Statistical analyses revealed the existence of significant differences in sugar recovery due to independent variables based on comparing the mean of main effects and interaction effects. Pine wood chips pretreated at a screw speed of 150 rpm and a barrel temperature of 180 °C with a moisture content of 25 % resulted in a maximum cellulose, hemicellulose, and total sugar recoveries of 65.8, 65.6, and 66.1 %, respectively, which was about 6.7, 7.9, and 6.8 fold higher than the control (unpretreated pine chips). Furthermore, potential fermentation inhibitors such as furfural, hydroxyl methyl furfural, and acetic acid were not found in any of the treatment combinations.

  4. Pine Gene Discovery Project - Final Report - 08/31/1997 - 02/28/2001

    Energy Technology Data Exchange (ETDEWEB)

    Whetten, R. W.; Sederoff, R. R.; Kinlaw, C.; Retzel, E.

    2001-04-30

    Integration of pines into the large scope of plant biology research depends on study of pines in parallel with study of annual plants, and on availability of research materials from pine to plant biologists interested in comparing pine with annual plant systems. The objectives of the Pine Gene Discovery Project were to obtain 10,000 partial DNA sequences of genes expressed in loblolly pine, to determine which of those pine genes were similar to known genes from other organisms, and to make the DNA sequences and isolated pine genes available to plant researchers to stimulate integration of pines into the wider scope of plant biology research. Those objectives have been completed, and the results are available to the public. Requests for pine genes have been received from a number of laboratories that would otherwise not have included pine in their research, indicating that progress is being made toward the goal of integrating pine research into the larger molecular biology research community.

  5. Fuel composition influences fire characteristics and understorey hardwoods in pine savanna

    National Research Council Canada - National Science Library

    Ellair, Darin P; Platt, William J; Austin, Amy

    2013-01-01

    .... We experimentally manipulated amounts of pine and hickory leaves beneath understorey hickory stems in a pine savanna, measured temperatures during prescribed fires and assessed combustion of fuels...

  6. High rate of adaptive evolution in two widespread European pines.

    Science.gov (United States)

    Grivet, Delphine; Avia, Komlan; Vaattovaara, Aleksia; Eckert, Andrew J; Neale, David B; Savolainen, Outi; González-Martínez, Santiago C

    2017-11-07

    Comparing related organisms with differing ecological requirements and evolutionary histories can shed light on the mechanisms and drivers underlying genetic adaptation. Here, by examining a common set of hundreds of loci, we compare patterns of nucleotide diversity and molecular adaptation of two European conifers (Scots pine and maritime pine) living in contrasted environments and characterized by distinct population genetic structure (low and clinal in Scots pine, high and ecotypic in maritime pine) and demographic histories. We found higher nucleotide diversity in Scots pine than in maritime pine, whereas rates of new adaptive substitutions (ωa ), as estimated from the Distribution of Fitness Effects (DFE), were similar across species, and among the highest found in plants. Sample size and population genetic structure did not appear to have resulted in significant bias in estimates of ωa . Moreover, population contraction-expansion dynamics for each species did not differentially affect differentially the rate of adaptive substitution in these two pines. Several methodological and biological factors may underlie the unusually high rate of adaptive evolution of Scots pine and maritime pine. By providing two new case studies with contrasting evolutionary histories, we contribute to disentangling the multiple factors potentially affecting adaptive evolution in natural plant populations. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

  7. Physicochemical and Sensory Properties of Whey Cheese with Pine Nuts

    OpenAIRE

    Cristina Anamaria Semeniuc; Laura Zăpărţan; Laura Stan; Carmen R. Pop; Maria Doiniţa Borş; Ancuţa M. Rotar

    2015-01-01

    This study aimed to develop a value-added whey cheese through addition of pine nuts. Therefore, different concentrations of pine nuts [2, 4, 6 and 8% (w/w)] were added to whey cheese. The study was designed to evaluate the influence of pine nuts on physicochemical and sensory properties of whey cheese. The addition of pine nuts resulted in an increase in fat content and total solids and a decrease in moisture content. However, no statistically significant difference was found in pH values. Se...

  8. Sailing to White Boat

    Science.gov (United States)

    2004-01-01

    This is a composite red-green-blue image of the rock called White Boat. It is the first rock target that Spirit drove to after finishing a series of investigations on the rock Adirondack. White Boat stood out to scientists due to its light color and more tabular shape compared to the dark, rounded rocks that surround it.

  9. Creating White Australia

    DEFF Research Database (Denmark)

    McLisky, Claire Louise; Carey, Jane

    Vedtagelsen af White Australien som regeringens politik i 1901 viser, at hvidheden var afgørende for den måde, hvorpå den nye nation i Australien blev konstitueret. Og alligevel har historikere i vid udstrækning overset hvidhed i deres studier af Australiens race fortid. 'Creating White Australia...

  10. White Teachers Talking Race

    Science.gov (United States)

    Segall, Avner; Garrett, James

    2013-01-01

    In light of the increasing racial diversity in American schools and the consistently homogenous teacher workforce in the United States, understanding the ways white teachers consider and attend to racial issues is of crucial importance to the educational landscape. This paper, based on a qualitative study, explores five white American teachers'…

  11. The Pine-Popple River basin--Hydrology of a wild river area, northeastern Wisconsin

    Science.gov (United States)

    Oakes, Edward L.; Field, Stephen J.; Seeger, Lawrence P.

    1973-01-01

    The Pine and Popple Rivers, virtually unaltered by man, flow through a semiprimitive area of forests, lakes, and glacial hills. White-water streams, natural lakes, fish and animal life, and abundant vegetation contribute to the unique recreational and aesthetic characteristics of the area. Resource planning or development should recognize the interrelationships within the hydrologic system and the possible effects of water and land-use changes upon the wild nature of the area. The basin covers about 563 square miles in northeastern Wisconsin. Swamps and wetlands cover nearly 110 square miles, and the 70 lakes cover about 11 square miles. The undulating topography is formed by glacial deposits overlying an irregular, resistant surface of bedrock. An annual average of 30 inches of precipitation, highest from late spring to early autumn, falls on the basin. Of this amount, evapotranspiration, highest in mid summer and late summer, averages 19 inches; the remaining 11 inches is runoff, which is highest in spring and early summer. Ground water from the glacial drift is the source of water for the minor withdrawal use in the basin. Ground-water movement is to streams and lakes and regionally follows the slope of topography and the bedrock surface, which is generally west to east. Ground water is of good quality, although locally high in iron. The major uses of water are for recreation and power generation. Domestic use is slight. No water is withdrawn from lakes or streams, and no sewage or industrial wastes are added to lakes or streams. Most of the flow of the Pine River is used for power generation. The main stems of the Pine and Popple Rivers contain 114 canoeable miles, of which 95 percent is without such major obstructions as falls or large rapids. In general streams support cold-water fish, and lakes support warm-water fish. Trout is the principal stream and game fish in the basin. The basin has no significant water problems. Future development between the Pine

  12. Modeling Mortality of Loblolly Pine Plantations

    OpenAIRE

    Thapa, Ram

    2014-01-01

    Accurate prediction of mortality is an important component of forest growth and yield prediction systems, yet mortality remains one of the least understood components of the system. Whole-stand and individual-tree mortality models were developed for loblolly pine plantations throughout its geographic range in the United States. The model for predicting stand mortality were developed using stand characteristics and biophysical variables. The models were constructed using two modeling approache...

  13. Small Hardwoods Reduce Growth of Pine Overstory

    Science.gov (United States)

    Charles X. Grano

    1970-01-01

    Dense understory hardwoods materially decreased the growth of a 53-year-old and a 47-year-old stand of loblolly and shortleaf pines. Over a 14-year period, hardwood eradication with chemicals increased average annual yield from the 53-year-old stand by 14.3 cubic feet, or 123 board-feet per acre. In the 47-year-old stand the average annual treatment advantage was...

  14. Pine Creek Ranch, FY 2001 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Berry, Mark E.

    2001-11-01

    Pine Creek Ranch was purchased in 1999 by the Confederated Tribes of Warm Springs using Bonneville Power Administration Fish and Wildlife Habitat Mitigation funds. The 25,000 acre property will be managed in perpetuity for the benefit of fish and wildlife habitat. Major issues include: (1) Restoring quality spawning and rearing habitat for stealhead. Streams are incised and fish passage barriers exist from culverts and possibly beaver dams. In addition to stealhead habitat, the Tribes are interested in overall riparian recovery in the John Day River system for wildlife habitat, watershed values and other values such as recreation. (2) Future grazing for specific management purposes. Past grazing practices undoubtedly contributed to current unacceptable conditions. The main stem of Pine Creek has already been enrolled in the CREP program administered by the USDA, Natural Resource Conservation Service in part because of the cost-share for vegetation restoration in a buffer portion of old fields and in part because of rental fees that will help the Tribes to pay the property taxes. Grazing is not allowed in the riparian buffer for the term of the contract. (3) Noxious weeds are a major concern. (4) Encroachment by western juniper throughout the watershed is a potential concern for the hydrology of the creek. Mark Berry, Habitat Manager, for the Pine Creek Ranch requested the Team to address the following objectives: (1) Introduce some of the field staff and others to Proper Functioning Condition (PFC) assessments and concepts. (2) Do a PFC assessment on approximately 10 miles of Pine Creek. (3) Offer management recommendations. (4) Provide guidelines for monitoring.

  15. Degradation of Bunker C Fuel Oil by White-Rot Fungi in Sawdust Cultures Suggests Potential Applications in Bioremediation.

    Directory of Open Access Journals (Sweden)

    Darcy Young

    Full Text Available Fungal lignocellulolytic enzymes are promising agents for oxidizing pollutants. This study investigated degradation of Number 6 "Bunker C" fuel oil compounds by the white-rot fungi Irpex lacteus, Trichaptum biforme, Phlebia radiata, Trametes versicolor, and Pleurotus ostreatus (Basidiomycota, Agaricomycetes. Averaging across all studied species, 98.1%, 48.6%, and 76.4% of the initial Bunker C C10 alkane, C14 alkane, and phenanthrene, respectively were degraded after 180 days of fungal growth on pine media. This study also investigated whether Bunker C oil induces changes in gene expression in the white-rot fungus Punctularia strigosozonata, for which a complete reference genome is available. After 20 days of growth, a monokaryon P. strigosozonata strain degraded 99% of the initial C10 alkane in both pine and aspen media but did not affect the amounts of the C14 alkane or phenanthrene. Differential gene expression analysis identified 119 genes with ≥ log2(2-fold greater expression in one or more treatment comparisons. Six genes were significantly upregulated in media containing oil; these genes included three enzymes with potential roles in xenobiotic biotransformation. Carbohydrate metabolism genes showing differential expression significantly accumulated transcripts on aspen vs. pine substrates, perhaps reflecting white-rot adaptations to growth on hardwood substrates. The mechanisms by which P. strigosozonata may degrade complex oil compounds remain obscure, but degradation results of the 180-day cultures suggest that diverse white-rot fungi have promise for bioremediation of petroleum fuels.

  16. Astrometric Binaries: White Dwarfs?

    Science.gov (United States)

    Oliversen, Nancy A.

    We propose to observe a selection of astrometric or spectroscopicastrometric binaries nearer than about 20 pc with unseen low mass companions. Systems of this type are important for determining the luminosity function of low mass stars (white dwarfs and very late main sequence M stars), and their contribution to the total mass of the galaxy. Systems of this type are also important because the low mass, invisible companions are potential candidates in the search for planets. Our target list is selected primarily from the list of 31 astrometric binaries near the sun by Lippincott (1978, Space Sci. Rev., 22, 153), with additional candidates from recent observations by Kamper. The elimination of stars with previous IUE observations, red companions resolved by infrared speckle interferometry, or primaries later than M1 (because if white dwarf companions are present they should have been detected in the visible region) reduces the list to 5 targets which need further information. IUE SWP low dispersion observations of these targets will show clearly whether the remaining unseen companions are white dwarfs, thus eliminating very cool main sequence stars or planets. This is also important in providing complete statistical information about the nearest stars. The discovery of a white dwarf in such a nearby system would provide important additional information about the masses of white dwarfs. Recent results by Greenstein (1986, A. J., 92, 859) from binary systems containing white dwarfs imply that 80% of such systems are as yet undetected. The preference of binaries for companions of approximately equal mass makes the Lippincott-Kamper list of A through K primaries with unseen companions a good one to use to search for white dwarfs. The mass and light dominance of the current primary over the white dwarf in the visible makes ultraviolet observations essential to obtain an accurate census of white dwarf binaries.

  17. Targeted capture sequencing in whitebark pine reveals range-wide demographic and adaptive patterns despite challenges of a large, repetitive genome

    Directory of Open Access Journals (Sweden)

    John eSyring

    2016-04-01

    Full Text Available Whitebark pine (Pinus albicaulis inhabits an expansive range in western North America, and it is a keystone species of subalpine environments. Whitebark is susceptible to multiple threats – climate change, white pine blister rust, mountain pine beetle, and fire exclusion – and it is suffering significant mortality range-wide, prompting the tree to be listed as ‘globally endangered’ by the International Union for Conservation of Nature (IUCN and ‘endangered’ by the Canadian government. Conservation collections (in situ and ex situ are being initiated to preserve the genetic legacy of the species. Reliable, transferrable, and highly variable genetic markers are essential for quantifying the genetic profiles of seed collections relative to natural stands, and ensuring the completeness of conservation collections. We evaluated the use of hybridization-based target capture to enrich specific genomic regions from the 30+ GB genome of whitebark pine, and to evaluate genetic variation across loci, trees, and geography. Probes were designed to capture 7,849 distinct genes, and screening was performed on 48 trees. Despite the inclusion of repetitive elements in the probe pool, the resulting dataset provided information on 4,452 genes and 32% of targeted positions (528,873 bp, and we were able to identify 12,390 segregating sites from 47 trees. Variations reveal strong geographic trends in heterozygosity and allelic richness, with trees from the southern Cascade and Sierra Range showing the greatest distinctiveness and differentiation. Our results show that even under non-optimal conditions (low enrichment efficiency; inclusion of repetitive elements in baits, targeted enrichment produces high quality, codominant genotypes from large genomes. The resulting data can be readily integrated into management and gene conservation activities for whitebark pine, and have the potential to be applied to other members of 5-needle pine group (Pinus subsect

  18. Silvicultural recommendations for the management of ponderosa pine forest

    Science.gov (United States)

    Martin Alfonso Mendoza Briseno; Mary Ann Fajvan; Juan Manuel Chacon Sotelo; Alejandro Velazquez Martinez; Antonio Quinonez. Silva

    2014-01-01

    Ponderosa pines are the most important timber producing species in Mexico, and they also represent a major portion of the Usa and Canada timber production. These pines form near pure stands with simple and stable stand structure. They suffer only occasional disturbances, and they sustain a limited capacity to hold biodiversity and other senvironmental services. The...

  19. Whitebark pine diameter growth response to removal of competition

    Science.gov (United States)

    Robert E. Keane; Kathy L. Gray; Laura J. Dickinson

    2007-01-01

    Silvicultural cutting treatments may be needed to restore whitebark pine (Pinus albicaulis) forests, but little is known of the response of this species to removal of competition through prescribed burning or silvicultural cuttings. We analyzed stem cross-sections from 48 whitebark pine trees in Montana around which most of the competing vegetation...

  20. Pine pollen collections dates - annual and geographic variation

    Science.gov (United States)

    J. W. Duffield

    1953-01-01

    Activity in pine breeding has increased throughout the temperate forest regions of the world since the Institute of Forest Genetics issued its first summary of pollen collection dates in 1947. Cooperation between pine breeders has increased at the same time. The information most essential for conducting cooperative breeding operations are the dates of pollen collection...

  1. Financial performance of loblolly and longleaf pine plantations

    Science.gov (United States)

    Steven D. Mills; Charles T. Stiff

    2013-01-01

    The financial performance of selected management regimes for loblolly (Pinus taeda L.) and longleaf pine (P. palustris Mill.) plantations were compared for four cases, each with low- and high-site productivity levels and each evaluated using 5 and 7 percent real discount rates. In all cases, longleaf pine was considered both with...

  2. Longleaf pine grown in Virginia: a provenance test

    Science.gov (United States)

    Kurt H. Johnsen; Jerre L. Creighton; Chris A. Maier

    2015-01-01

    In 2006 the Virginia Department of Forestry established a longleaf pine (Pinus palustris Mill.) provenance test on three sites near Richmond, VA, near the most northern native range of longleaf pine. Seedlings were grown in containers at the Virginia Department of Forestry New Kent Forestry Center during the 2005 growing season.

  3. Loblolly pine karyotype using FISH and DAPI positive banding

    Science.gov (United States)

    M. Nurul Islam-Faridi; C. Dana Nelson; Thomas L. Kubisiak; M.V. Gullirmo; V.H. McNamara; S. Ramakrishnan; H.J. Price; D.M. Stelly

    2003-01-01

    The pines (Pinus, 2n = 2x = 24) include many commercially important timber species. Pinus spp. have 12 pairs of chromosomes, with 10 or 11 pairs of long metacentric chromosomes and one pair of short sub-metacentric chromosomes (Sax and Sax 1933). The pines have been studied extensively with...

  4. Mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Curculionidae, Scolytinae)

    Science.gov (United States)

    Barbara Bentz

    2008-01-01

    The mountain pine beetle, Dendroctonus ponderosae Hopkins, is considered one of the most economically important insect species in coniferous forests of western North America. Adult beetles are capable of successfully reproducing in at least 12 North American species of Pinus (Pineacea) from southern British Columbia to northern Baja Mexico. Mountain pine beetle adults...

  5. Severe burning treatment tested on lowland pine sites

    Science.gov (United States)

    S. Little; E. B. Moore

    1953-01-01

    Since the prescribed use of fire is a fairly new silvicultural technique for preparing seedbeds for pine in the New Jersey pine region, it has been used rather cautiously. Burning treatments have been made in the winter, when periodic light fires can be easily controlled. The treatments have been used almost exclusively on upland sites.

  6. Proceedings of the Symposium on the Management of Longleaf Pine

    Science.gov (United States)

    Robert S. Farrar; [Editor

    1989-01-01

    The symposium on the management of longleaf pine leading to these proceedings was held on April 4 through 6, 1989, in Long Beach, MS, at the Gulf Park Conference Center of the University of Southern Mississippi. This conference was attended by approximately 170 land managers, wildlife managers, researchers, educators, students, and others interested in longleaf pine...

  7. Constituent and induced tannin accumulations in roots of loblolly pines

    Science.gov (United States)

    Charles H. Walkinshaw

    1999-01-01

    Loblolly pine (Pinus taeda L [L.]) has become the most important source of wood fiber in the Southern United States. This tree is an excellent competitor and recovers well from a variety of adverse conditions. The author presents a histological study of tannin in pine roots to measure tannin abundance as a primary trait to evaluate root health at the...

  8. Influence of Thinning and Pruning on Southern Pine Veneer Quality

    Science.gov (United States)

    Mark D. Gibson; Terry R. Clason; Gary L. Hill; George A. Grozdits

    2002-01-01

    This paper presents the effects of intensive pine plantation management on veneer yields, veneer grade distribution and veneer MOE as measured by ultrasonic stress wave transmission (Metriguard). Veneer production trials were done at a commercial southern pine plywood plant to elucidate the effects of silvicultural treatments on veneer quality, yield, and modulus of...

  9. Phoretic symbionts of the mountain pine beetle (Dendroctonus ponderosae Hopkins)

    Science.gov (United States)

    Javier E. Mercado; Richard W. Hofstetter; Danielle M. Reboletti; Jose F. Negron

    2014-01-01

    During its life cycle, the tree-killing mountain pine beetle Dendroctonus ponderosae Hopkins interacts with phoretic organisms such as mites, nematodes, fungi, and bacteria. The types of associations these organisms establish with the mountain pine beetle (MPB) vary from mutualistic to antagonistic. The most studied of these interactions are those between beetle and...

  10. Population Dynamics of Southern Pine Beetle in Forest Landscapes

    Science.gov (United States)

    Andrew Birt

    2011-01-01

    Southern pine beetle (SPB) is an important pest of Southeastern United States pine forests. Periodic regional outbreaks are characterized by localized areas of tree mortality (infestations) surrounded by areas with little or no damage. Ultimately, this spatiotemporal pattern of tree mortality is driven by the dynamics of SPB populations—more specifically, by rates of...

  11. Grazing on Regeneration Sites Encourages Pine Seedling Growth

    Science.gov (United States)

    Raymond D. Ratliff; Renee G. Denton

    1995-01-01

    Effects of season-long, deferred-rotation, and rest-rotation grazing, on ponderosa pine (Pinus ponderosa Dougl. ex Laws.) seedling growth and herbaceous vegetation control were studied in regeneration sites at Boyd Hill, Modoc National Forest, California. Seedlings were planted in 1989. Pine seedling survival and damage did not differ, but the...

  12. Contamination of Pine Seeds by the Pitch Canker Fungus

    Science.gov (United States)

    L. David Dwinell; S.W. Fraedrich

    1999-01-01

    The pitch canker fungus, Fusarium subglutinans f. sp. pini, has been identified as a significant problem in man pine seed orchards and nursuries in the South. THe fungus causes strobilus mortality, seed deterioation, and cankers on the main stem, branches, and shoots of pines Dwinell and others 1985). The pitche canker fungus...

  13. Physicochemical and Sensory Properties of Whey Cheese with Pine Nuts

    Directory of Open Access Journals (Sweden)

    Cristina Anamaria Semeniuc

    2015-11-01

    Full Text Available This study aimed to develop a value-added whey cheese through addition of pine nuts. Therefore, different concentrations of pine nuts [2, 4, 6 and 8% (w/w] were added to whey cheese. The study was designed to evaluate the influence of pine nuts on physicochemical and sensory properties of whey cheese. The addition of pine nuts resulted in an increase in fat content and total solids and a decrease in moisture content. However, no statistically significant difference was found in pH values. Sensory analysis was performed using the 9-point hedonic scale, with selected assessors. The whey cheese sample with 4% pine nuts was the most appreciated (7.6 points, followed by the classic whey cheese, whey cheese with 6 and 8% pine nuts (7.4 points, and whey cheese with 2% pine nuts (7.3 points. Nevertheless, the sensory characteristics of whey cheese were not significantly influenced by the addition of pine nuts. Whey cheese sensory profiling was successful in differential characterization of whey cheese samples.

  14. Uneven-aged management for longleaf pine: freedom to choose

    Science.gov (United States)

    David Dyson

    2012-01-01

    Longleaf pine once was present on 90 million acres of the southern landscape, ranging from coastal Virginia to east Texas and from central Florida to the mountains of Alabama. On nearly two-thirds of that area, longleaf pine grew in nearly pure (single-species) stands maintained by frequent, low-intensity surface fires of both natural and human origin. The remaining...

  15. Interacting genes in the pine-fusiform rust forest pathosystem

    Science.gov (United States)

    H.V. Amerson; T.L. Kubisiak; S.A. Garcia; G.C. Kuhlman; C.D. Nelson; S.E. McKeand; T.J. Mullin; B. Li

    2005-01-01

    Fusiform rust (FR) disease of pines, caused by Cronartium quercuum f.sp. fusiforme (Cqf), is the most destructive disease in pine plantations of the southern U. S. The NCSU fusiform rust program, in conjunction with the USDA-Forest Service in Saucier, MS and Athens, GA, has research underway to elucidate some of the genetic interactions in this...

  16. Longleaf Pine Cone Crops and Climate: A Possible Link

    Science.gov (United States)

    Neil Pederson; John S. Kush; Ralph S. Meldahl; William D. Bayer

    1999-01-01

    The physiological development of longieaf pine seed extends over three calendar years. The duration of this process may explain the reason for infrequent seed crops. Infrequent crops cause problems for those interested in natural regeneration. Longleaf pine cone crops have been monitored on the Escambia Experimental Forest (EEF) in Brewton, AL since 1958. Weather data...

  17. Ecosystem-based management in the whitebark pine zone

    Science.gov (United States)

    Robert E. Keane; Stephen F. Arno; Catherine A. Stewart

    2000-01-01

    Declining whitebark pine (Pinus albicaulis) forests have necessitated development of innovative methods to restore these ecologically valuable, high elevation ecosystems. We have began an extensive restoration study using prescribed fire and silvicultural cuttings to return native ecological processes to degenerating whitebark pine forests....

  18. Forest stand dynamics of shortleaf pine in the Ozarks

    Science.gov (United States)

    David R. Larsen

    2007-01-01

    Much has been written on the management of shortleaf pine in the Ozarks (Brinkman et al. 1965, Brinkman 1967, Brinkman and Smith 1968, Seidel and Rogers 1965, Seidel and Rogers 1966). In large portions of the Ozarks, shortleaf pine does not grow in pure stands but rather in mixes with various oak species. These mixes present unique challenges in finding the set of...

  19. Limber pine conservation in Rocky Mountain National Park

    Science.gov (United States)

    Jeff Connor; Anna Schoettle; Kelly Burns; Erin Borgman

    2012-01-01

    Limber pines are one of the most picturesque trees in Rocky Mountain National Park (RMNP). Growing in some of the park's most exposed rocky sites, the trees' gnarled trunks give testimony to fierce winds that buffet them in winter. Limber pines live to great ages, with some in the park exceeding 1,000 years. An especially photogenic stand of ancient trees...

  20. A comparison of northern and southern table mountain pine stands

    Science.gov (United States)

    Patrick H. Brose; Thomas A. Waldrop; Helen H. Mohr

    2010-01-01

    Table Mountain pine (Pinus pungens) stands occur throughout the Appalachian Mountains, but ecological research has concentrated on the southern part of this region. In 2006, research was initiated in northern Table Mountain pine stands growing in PA to compare some basic attributes of those stands with previously described ones in TN. Overall, the...

  1. Photosynthesis and growth of selected scotch pine seed sources

    Science.gov (United States)

    John C. Gordon; Gordon E. Gatherum

    1968-01-01

    A number of problems related to the culture of Scotch pine (Pinus sylvestris L.) arose following the increased planting of this species in Iowa. Therefore, a program of controlled-environment experiments to determine the effects of genetic and environmental factors on physiological processes important to the culture of Scotch pine was begun by the...

  2. The effects of a wildfire on pine seedling recruitment

    Science.gov (United States)

    Paula C. Gnehm; Brad Hadley

    2007-01-01

    We investigated the effects of a single arson wildfire by comparing its impact on pine seedling recruitment with that of both prescribed fire and unburned compartments. Although a t-test detected no significant difference in pine seedling recruitment (p = 0.38), the "wildfire" treatment produced 127 more seedlings than the unburned...

  3. Exploring whitebark pine resilience in the crown of the continent

    Science.gov (United States)

    Stacey A. Burke; Michael S. Quinn

    2011-01-01

    Whitebark pine (Pinus albicaulis) populations are declining across western North America due to synergies of disturbances, both natural and anthropogenic. Losses at treeline may result in significant changes to the upper subalpine zone, which may result in a regime shift, thus affecting the ecological goods and services whitebark pine systems provide for other species...

  4. Loblolly Pine Growth 16 Years After Four Site Preparation Treatments

    Science.gov (United States)

    John C. Adams; Clyde Vidrine

    2002-01-01

    Thirteen-year growth results of 1-0 planted loblolly pine seedlings (Pinus taeda L.) on differently prepared upland mixed pine-hardwood sites located in north western Louisiana are presented. The study was designed as a randomized complete block consisting of three blocks of four site preparation treatments, which included: chop and burn, windrow,...

  5. Effect of dietary mugwort ( Artemisia vulgaris L.) and pine needle ...

    African Journals Online (AJOL)

    The effects of dietary mugwort and pine needle powder supplementation on growth performance, serum cholesterol, and meat quality of broilers were evaluated in a 35 days feed trial. 200 one day old broilers were randomly allocated to five dietary treatments (0, 1 and 2% mugwort or 1 and 2% pine needle powder) with ...

  6. A review of southern pine decline in North America

    Science.gov (United States)

    David R. Coyle; Kier D. Klepzig; Frank H. Koch; Lawrence A. Morris; John T. Nowak; Steven W. Oak; William J. Otrosina; William D. Smith; Kamal J.K. Gandhi

    2015-01-01

    The southeastern United States is among the most productive forested areas in the world. Four endemic southern pine species – loblolly, longleaf, shortleaf, and slash - contribute significantly to the economic and ecological values in the region. A recently described phenomenon known as Southern Pine Decline (SPD) has been reported as having widespread impact in the...

  7. Comparison of Monterey pine stress in urban and natural forests

    Science.gov (United States)

    David J. Nowak; Joe R. McBride

    1991-01-01

    Monterey pine street trees within Carmel, California and its immediate vicinity, as well as forest-grown Monterey pine within adjacent natural stands, were sampled with regard to visual stress characteristics, and various environmental and biological variables. Two stress indices were computed, one hypothesized before data collection was based on relative foliage...

  8. Straight studs are produced from southern pine cordwood

    Science.gov (United States)

    Peter Koch

    1967-01-01

    A Process for converting southern pine veneer cores into 8-foot 2 by 4's of SPIB Stud grade and better has been developed at the Alexandria, Louisiana, Utilization Laboratory of the Southern Forest Experiment Station. The research leading to this development suggests that a similiar process would be practical for converting 8-foot southern pine cordwood into studs...

  9. Herbaceous weed control in loblolly pine plantations using flazasulfuron

    Science.gov (United States)

    Andrew W. Ezell; Jimmie L. Yeiser

    2015-01-01

    A total of 13 treatments were applied at four sites (two in Mississippi and two in Texas) to evaluate the efficacy of flazasulfuron applied alone or in mixtures for providing control of herbaceous weeds. All sites were newly established loblolly pine (Pinus taeda L.) plantations. Plots were evaluated monthly until 180 days after treatment. No phytotoxicity on pine...

  10. White Blood Cell Disorders

    Science.gov (United States)

    ... the Blood Additional Content Medical News Overview of White Blood Cell Disorders By Mary Territo, MD, Emeritus ... service to the community. The legacy of this great resource continues as the Merck Manual in the ...

  11. Distribution System White Papers

    Science.gov (United States)

    EPA worked with stakeholders and developed a series of white papers on distribution system issues ranked of potentially significant public health concern (see list below) to serve as background material for EPA, expert and stakeholder discussions.

  12. White Lake AOC

    Science.gov (United States)

    White Lake is in Muskegon County along the eastern shore of Lake Michigan. It was named an Area of Concern on the Great Lakes under the Great Lakes Water Quality Agreement of 1987 and delisted in 2014.

  13. Recent trends in the afforestation and reforestation of nonindustrial private pine forests in Alabama

    Science.gov (United States)

    William H. McWilliams

    1992-01-01

    A shrinking of Alabama's nonindustrial private pine forest prompted an analysis of recent trends in afforestation and regeneration. There has been an 828,100-acre addition to the nonindustrial pine-site timberland base from nonforest land uses. Planting has replaced natural seeding as the major cause of afforestation to pine. The area of nonindustrial pine-site...

  14. Using fire to restore pine/hardwood ecosystems in the Southern Appalachians of North Carolina

    Science.gov (United States)

    James M. Vose; Wayne T. Swank; Barton D. Clinton; Ronald L. Hendrick; Amy E. Major

    1997-01-01

    In the Southern Appalachians, mixed pine/hardwood ecosystems occupy the most xeric sites (i.e., south/west aspect ridge sites). They are typically comprised of varying proportions of pitch pine (Pinus rigida), Virginia pine (Pinus virginiana), and/or shortleaf pine (Pinus echinata) and a mixture of hardwoods, including scarlet oak (Quercus coccinea), chestnut oak (...

  15. Distinguishing features of loblolly and shortleaf pine seeds: implications for monitoring seed production in mixed stands

    Science.gov (United States)

    Michael G. Shelton; Michael D. Cain

    1996-01-01

    Monitoring seed production in mixed loblolly pine - shortleaf pine (Pinus taeda L. and Pinus echinata Mill. respectively) stands may require identifying individual seeds by species. Although loblolly pine seeds are on average heavier and larger than those of shortleaf pine, there is considerable overlap in these properties for...

  16. A Common-Pool Resource Approach to Forest Health: The Case of the Southern Pine Beetle

    Science.gov (United States)

    John Schelhas; Joseph Molnar

    2012-01-01

    The southern pine beetle, Dendroctonus frontalis, is a major threat to pine forest health in the South, and is expected to play an increasingly important role in the future of the South’s pine forests (Ward and Mistretta 2002). Once a forest stand is infected with southern pine beetle (SPB), elimination and isolation of the infested and immediately...

  17. Surfing the Koehler Curve: revisiting a method for the identification of longleaf pine stumps and logs

    Science.gov (United States)

    Thomas L. Eberhardt; Philip M. Sheridan; Karen G. Reed

    2009-01-01

    Measurements of pith and second growth ring diameters were used by Koehler in 1932 to separate longleaf pine (Pinus palustris Mill.) timbers from those of several southern pines (e.g., loblolly, shortleaf). In the current study, measurements were taken from plantation-grown longleaf, loblolly and shortleaf pine trees, as well as old growth longleaf pine, lightwood, and...

  18. Prediction and identification of Korean Pine (Pinus koraiensis) vicilin as a food allergen (abstract)

    Science.gov (United States)

    RATIONALE: Pine nut allergy cases have been reported, but pine nut allergens remain to be identified and characterized. Korean pine nut is one of the major varieties of pine nuts that are widely consumed. Vicilins belong to one of a few protein families that contain more than 85% of the known food a...

  19. The mountain pine beetle and whitebark pine waltz: Has the music changed?

    Science.gov (United States)

    Barbara J. Bentz; Greta Schen-Langenheim

    2007-01-01

    The mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae, Scolytinae) (MPB), is a bark beetle native to western North American forests, spanning wide latitudinal and elevational gradients. MPB infest and reproduce within the phloem of most Pinus species from northern Baja California in Mexico to central British Columbia in...

  20. Impact of a Mountain Pine Beetle Outbreak on Young Lodgepole Pine Stands in Central British Columbia

    Directory of Open Access Journals (Sweden)

    Amalesh Dhar

    2015-09-01

    Full Text Available The current mountain pine beetle (MPB (Dendroctonous ponderosae Hopkins epidemic has severely affected pine forests of Western Canada and killed millions of hectares of lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm. forest. Generally, MPB attack larger and older (diameter > 20 cm or >60 years of age trees, but the current epidemic extends this limit with attacks on even younger and smaller trees. The study’s aim was to investigate the extent of MPB attack in young pine stands and its possible impact on stand dynamics. Although MPB attacks were observed in trees as small as 7.5 cm diameter at breast height (DBH and as young as 13 years old, the degree of MPB attack (percent stems ha−1 increased with increasing tree diameter and age class (13–20, 21–40, 41–60, and 61–80 years old (6.4%, 49.4%, 62.6%, and 69.5% attack, respectively, by age class which is greater than that reported from previous epidemics for stands of this age. The mean density of surviving residual structure varied widely among age classes and ecological subzones. Depending on age class, 65% to 77% of the attacked stands could contribute to mid-term timber supply. The surviving residual structure of young stands offers an opportunity to mitigate the effects of MPB-attack on future timber supply, increase age class diversity, and enhance ecological resilience in younger stands.

  1. Nitrogen cycling following mountain pine beetle disturbance in lodgepole pine forests of Greater Yellowstone

    Science.gov (United States)

    Jacob M. Griffin; Monica G. Turner; Martin Simard

    2011-01-01

    Widespread bark beetle outbreaks are currently affecting multiple conifer forest types throughout western North America, yet many ecosystem-level consequences of this disturbance are poorly understood. We quantified the effect of mountain pine beetle (Dendroctonus ponderosae) outbreak on nitrogen (N) cycling through litter, soil, and vegetation in...

  2. Body temperature variations of the Louisiana pine snake (Pituophis ruthveni) in a longleaf pine ecosystem

    Science.gov (United States)

    John G. Himes; Laurence M. Hardy; D. Craig Rudolph; Shirley J. Burgdorf

    2006-01-01

    The thermal ecology of the Louisiana pine snake, Pituophis ruthveni, was studied from 1993-97 in Louisiana and Texas. All snakes were implanted with temperature-sensitive radiotransmitters. Temperatures were recorded from snakes located above ground and underground and were compared between size and sex classes (juveniles, adult males, adult females). Associated air...

  3. EuroPineDB: a high-coverage web database for maritime pine transcriptome

    Directory of Open Access Journals (Sweden)

    Cantón Francisco R

    2011-07-01

    Full Text Available Abstract Background Pinus pinaster is an economically and ecologically important species that is becoming a woody gymnosperm model. Its enormous genome size makes whole-genome sequencing approaches are hard to apply. Therefore, the expressed portion of the genome has to be characterised and the results and annotations have to be stored in dedicated databases. Description EuroPineDB is the largest sequence collection available for a single pine species, Pinus pinaster (maritime pine, since it comprises 951 641 raw sequence reads obtained from non-normalised cDNA libraries and high-throughput sequencing from adult (xylem, phloem, roots, stem, needles, cones, strobili and embryonic (germinated embryos, buds, callus maritime pine tissues. Using open-source tools, sequences were optimally pre-processed, assembled, and extensively annotated (GO, EC and KEGG terms, descriptions, SNPs, SSRs, ORFs and InterPro codes. As a result, a 10.5× P. pinaster genome was covered and assembled in 55 322 UniGenes. A total of 32 919 (59.5% of P. pinaster UniGenes were annotated with at least one description, revealing at least 18 466 different genes. The complete database, which is designed to be scalable, maintainable, and expandable, is freely available at: http://www.scbi.uma.es/pindb/. It can be retrieved by gene libraries, pine species, annotations, UniGenes and microarrays (i.e., the sequences are distributed in two-colour microarrays; this is the only conifer database that provides this information and will be periodically updated. Small assemblies can be viewed using a dedicated visualisation tool that connects them with SNPs. Any sequence or annotation set shown on-screen can be downloaded. Retrieval mechanisms for sequences and gene annotations are provided. Conclusions The EuroPineDB with its integrated information can be used to reveal new knowledge, offers an easy-to-use collection of information to directly support experimental work (including

  4. High-resolution analysis of stem increment and sap flow for loblolly pine trees attacked by southern pine beetle

    Science.gov (United States)

    Stan D. Wullschleger; Samuel B. McLaughlin; Matthew P. Ayres

    2004-01-01

    Manual and automated dendrometers, and thermal dissipation probes were used to measure stem increment and sap flow for loblolly pine (Pinus taeda L.) trees attacked by southern pine beetle (Dendroctonus frontalis Zimm.) in east Tennessee, USA. Seasonal-long measurements with manual dendrometers indicated linear increases in stem...

  5. Biochemical Assay Detects Feeding Damage to Loblolly Pine Seeds Caused by the Leaffooted Pine Seed Bug (Hemiptera: Coreidae)

    Science.gov (United States)

    Cameron G. Lait; Daniel R. Miller; Sarah L. Bates; John H. Borden; Allison R. Kermode

    2003-01-01

    A large number of proteins in salivary gland extracts of the leaffooted pine seed bug, Leptoglossus corculus Say, were strongly recognized by a polyclonal antibody-based assay developed for detecting saliva of the western conifer seed bug, Lepfoglossus occidentalis Heidemann, in lodgepole pine, Pinus contorta var...

  6. Soil properties in 35 y old pine and hardwood plantations after conversion from mixed pine-hardwood forest

    Science.gov (United States)

    D. Andrew Scott; Michael G. Messina

    2009-01-01

    Past management practices have changed much of the native mixed pine-hardwood forests on upland alluvial terraces of the western Gulf Coastal Plain to either pine monocultures or hardwood (angiosperm) stands. Changes in dominant tree species can alter soil chemical, biological, and physical properties and processes, thereby changing soil attributes, and ultimately,...

  7. Changes in transpiration and foliage growth in lodgepole pine trees following mountain pine beetle attack and mechanical girdling

    Science.gov (United States)

    Robert M. Hubbard; Charles C. Rhoades; Kelly Elder; Jose Negron

    2013-01-01

    The recent mountain pine beetle outbreak in North American lodgepole pine forests demonstrates the importance of insect related disturbances in changing forest structure and ecosystem processes. Phloem feeding by beetles disrupts transport of photosynthate from tree canopies and fungi introduced to the tree's vascular system by the bark beetles inhibit water...

  8. Understory vegetation, resource availability, and litterfall responses to pine thinning and woody vegetation control in longleaf pine plantations

    Science.gov (United States)

    Timothy B. Harrington; M. Boyd. Edwards

    1999-01-01

    In six 8- to 11-year-old plantations of longleaf pine (Pinus palustris Mill.) near Aiken, S.C., responses of understory vegetation, light, and soil water availability and litterfall were studied in relation to pine thinning (May 1994), herbicidal treatment of nonpine woody vegetation (1995-1996), or the combined treatments (treatment responses...

  9. Fire and the orgin of the Table Mountain pine - pitch pine communities in the southern Appalachian mountains, USA

    Science.gov (United States)

    Patrick H. Brose; Thomas A. Waldrop

    2006-01-01

    The prevalence of stand-replacing tire in the formation of Table Mountain pine - pitch pine (Pinus pungens Lamb. and Pinus rigida Mill., respectively) communities was investigated with dendrochronological techniques. Nine stands in Georgia, South Carolina, and Tennessee were analyzed for age structure, species recruitment trends,...

  10. Fire and the origin of Table Mountain pine - pitch pine communities in the southern Appalachian Mountains, USA

    Science.gov (United States)

    Patrick H. Brose; Thomas A. Waldrop

    2006-01-01

    The prevalence of stand-replacing fire in the formation of Table Mountain pine - pitch pine (Pinus pungens Lamb. and Pinus rigida Mill., respectively) communities was investigated with dendrochronological techniques. Nine stands in Georgia, South Carolina, and Tennessee were analyzed for age structure, species recruitment trends,...

  11. Content of chemical elements in tree rings of lodgepole pine and whitebark pine from a subalpine Sierra Nevada forest

    Science.gov (United States)

    David L. Peterson; Darren R. Anderson

    1990-01-01

    The wood of lodgepole pines and whitebark pines from a high elevation site in the east central Sierra Nevada of California was analyzed for chemical content to determine whether there were any temporal patterns of chemical distribution in tree rings. Cores were taken from 10 trees of each species and divided into 5-year increments for chemical analysis. Correlation...

  12. Prescribed burning and mastication effects on surface fuels in southern pine beetle-killed loblolly pine plantations

    Science.gov (United States)

    Aaron D. Stottlemyer; Thomas A. Waldrop; G. Geoff Wang

    2015-01-01

    Surface fuels were characterized in loblolly pine (Pinus taeda L.) plantations severely impacted by southern pine beetle (Dendroctonus frontalis Ehrh.) (SPB) outbreaks in the upper South Carolina Piedmont. Prescribed burning and mastication were then tested as fuel reduction treatments in these areas. Prescribed burning reduced...

  13. Southern pine beetle-induced mortality of pines with natural and artificial red-cockaded woodpecker cavities in Texas

    Science.gov (United States)

    Richard N. Conner; Daniel Saenz; D. Craig Rudolph; Robert N. Coulson

    1998-01-01

    Southern pine beetle (Dendroctonus frontalis) infestation is the major cause of mortality for red-cockaded woodpecker (Picoides borealis) cavity trees in loblolly (Pinus taeda) and shortleaf (P. echinata) pines. Recent intensive management for red-cockaded woodpeckers includes the use of artificial cavity inserts. Between 1991 and 1996 the authors examined southern...

  14. Integrating management strategies for the mountain pine beetle with multiple-resource management of lodgepole pine forests

    Science.gov (United States)

    Mark D. McGregor; Dennis M. Cole

    1985-01-01

    Provides guidelines for integrating practices for managing mountain pine beetle populations with silvicultural practices for enhancing multiple resource values of lodgepole pine forests. Summarizes published and unpublished technical information and recent research on the ecology of pest and host and presents visual and classification criteria for recognizing...

  15. Nitrogen cycling responses to mountain pine beetle disturbance in a high elevation whitebark pine ecosystem

    Science.gov (United States)

    Keville, Megan P.; Reed, Sasha C.; Cleveland, Cory C.

    2013-01-01

    Ecological disturbances can significantly affect biogeochemical cycles in terrestrial ecosystems, but the biogeochemical consequences of the extensive mountain pine beetle outbreak in high elevation whitebark pine (WbP) (Pinus albicaulis) ecosystems of western North America have not been previously investigated. Mountain pine beetle attack has driven widespread WbP mortality, which could drive shifts in both the pools and fluxes of nitrogen (N) within these ecosystems. Because N availability can limit forest regrowth, understanding how beetle-induced mortality affects N cycling in WbP stands may be critical to understanding the trajectory of ecosystem recovery. Thus, we measured above- and belowground N pools and fluxes for trees representing three different times since beetle attack, including unattacked trees. Litterfall N inputs were more than ten times higher under recently attacked trees compared to unattacked trees. Soil inorganic N concentrations also increased following beetle attack, potentially driven by a more than two-fold increase in ammonium (NH4+) concentrations in the surface soil organic horizon. However, there were no significant differences in mineral soil inorganic N or soil microbial biomass N concentrations between attacked and unattacked trees, implying that short-term changes in N cycling in response to the initial stages of WbP attack were restricted to the organic horizon. Our results suggest that while mountain pine beetle attack drives a pulse of N from the canopy to the forest floor, changes in litterfall quality and quantity do not have profound effects on soil biogeochemical cycling, at least in the short-term. However, continuous observation of these important ecosystems will be crucial to determining the long-term biogeochemical effects of mountain pine beetle outbreaks.

  16. Mountain Pine Beetle Host Selection Between Lodgepole and Ponderosa Pines in the Southern Rocky Mountains.

    Science.gov (United States)

    West, Daniel R; Briggs, Jennifer S; Jacobi, William R; Negrón, José F

    2016-02-01

    Recent evidence of range expansion and host transition by mountain pine beetle (Dendroctonus ponderosae Hopkins; MPB) has suggested that MPB may not primarily breed in their natal host, but will switch hosts to an alternate tree species. As MPB populations expanded in lodgepole pine forests in the southern Rocky Mountains, we investigated the potential for movement into adjacent ponderosa pine forests. We conducted field and laboratory experiments to evaluate four aspects of MPB population dynamics and host selection behavior in the two hosts: emergence timing, sex ratios, host choice, and reproductive success. We found that peak MPB emergence from both hosts occurred simultaneously between late July and early August, and the sex ratio of emerging beetles did not differ between hosts. In two direct tests of MPB host selection, we identified a strong preference by MPB for ponderosa versus lodgepole pine. At field sites, we captured naturally emerging beetles from both natal hosts in choice arenas containing logs of both species. In the laboratory, we offered sections of bark and phloem from both species to individual insects in bioassays. In both tests, insects infested ponderosa over lodgepole pine at a ratio of almost 2:1, regardless of natal host species. Reproductive success (offspring/female) was similar in colonized logs of both hosts. Overall, our findings suggest that MPB may exhibit equally high rates of infestation and fecundity in an alternate host under favorable conditions. © The Authors 2015. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  17. White Rose Project

    Energy Technology Data Exchange (ETDEWEB)

    Roach, W. [Husky Oil Operations Ltd., Calgary, AB (Canada)

    2001-07-01

    The status of Husky's White Rose Project in the Jeanne d'Arc Basin of the Grand Banks of Newfoundland was presented with particular focus on the province of Newfoundland, resource development applications and project challenges. Husky Energy merged with Renaissance Energy in August 2000. It is publicly traded on the Toronto Stock Exchange. Its Q1 2000 production was 270 mboe/d with a clear strategy to deliver an additional 200 mboe/d by 2005. The 5 major projects which represent 80 per cent of Husky's growth are the White Rose, Tucker Lake, Wenchang, Terra Nova and Lloyd Project. This presentation included a map showing the land holdings related to Husky's White Rose Project. The development plans include the drilling of 15-20 wells in the basin which holds an estimated 230 mm/bbls of oil reserves. The presentation also described the Canada-Newfoundland benefits that White Rose will bring in terms of direct person-hours and spin off employment. No gas export infrastructure is currently in place. It is believed that between 7 and 10 tcf of discovered gas reserves is required and there is not enough White Rose gas on which to base an economic gas development. The White Rose challenge will be to deliver a technically and commercially viable project that meets the needs of the owners, governments, unions and supply community. The successful completion of the White Rose Project will demonstrate that the Grand Banks can be developed effectively and efficiently and will contribute to Newfoundland's offshore petroleum industry. tabs., figs.

  18. Treatment options : Copper/boron mobility in Pine and Cedar

    Energy Technology Data Exchange (ETDEWEB)

    Elton, B.; Wall, W.; Smart, R. [Genics Inc., Edmonton, AB (Canada); Goodman, J. [Duke Energy, Calgary, AB (Canada)

    2002-07-01

    In this PowerPoint presentation, the authors present the mobility of copper and boron in both Pine and Cedar, with the focus on the Hilo project (decay hazard zone 5) and Surrey plot (decay hazard zone 4). With the use of a diagram, they discuss the fungi involved in wood decay. It was determined that boron is more effective against Basidiomycetes (brown and white rots), while copper is more effective against Ascomycetes (soft rot and mould). Since the trial expectations involved good diffusion downwards due to adequate moisture, copper and boron were applied at ground line. The hypothesis was for copper diffusion to be enhanced by interactions with borate, while borate diffusion would be a steady release over time. It was also expected that copper-borate complex would have a synergistic effect. The methodology for the trial was detailed, and the boron and copper migration were digitally photographed. Using aqueous and acid extractions, boron and copper were analyzed quantitatively. The results led to the following conclusions: (1) boron has greater mobility than copper, (2) copper mobility was limited to 50 millimetres, (3) boron movement exceeded 300 millimetres, (4) rapid migration of boron is due to high solubility in water, (5) limited mobility of copper from the rods attributed to a lower solubility in water as well as the possibility of chelating or reacting with the wood extractives, (6) type of movement of copper appears to be different than that of boron and suggests the possibility of mass flow, and (7) additional studies are required on other species. refs., 2 tabs., figs.

  19. Paraquat and pine trees in east Tennessee

    Energy Technology Data Exchange (ETDEWEB)

    Schnell, R.L.; Toennisson, R.L.

    1978-01-01

    The Tennessee Valley Authority started a series of 8% Paraquat tests in east Tennessee on loblolly, shortleaf, and Virginia pines in the spring of 1974. In addition to species, we are also testing the effects of season of treatment application and the length of time between the completed treatment and the harvest cut. Wood samples are being analyzed by the Botany Department at the University of Tennessee in Knoxville. All three species have shown increased oleoresin production. Season of treatment did not have a significant effect on enhancement nor did length of time between treatment and harvest.

  20. The lodgepole × jack pine hybrid zone in Alberta, Canada: a stepping stone for the mountain pine beetle on its journey East across the boreal forest?

    Science.gov (United States)

    Lusebrink, Inka; Erbilgin, Nadir; Evenden, Maya L

    2013-09-01

    Historical data show that outbreaks of the tree killing mountain pine beetle are often preceded by periods of drought. Global climate change impacts drought frequency and severity and is implicated in the range expansion of the mountain pine beetle into formerly unsuitable habitats. Its expanded range has recently reached the lodgepole × jack pine hybrid zone in central Alberta, Canada, which could act as a transition from its historical lodgepole pine host to a jack pine host present in the boreal forest. This field study tested the effects of water limitation on chemical defenses of mature trees against mountain pine beetle-associated microorganisms and on beetle brood success in lodgepole × jack pine hybrid trees. Tree chemical defenses as measured by monoterpene emission from tree boles and monoterpene concentration in needles were greater in trees that experienced water deficit compared to well-watered trees. Myrcene was identified as specific defensive compound, since it significantly increased upon inoculation with dead mountain pine beetles. Beetles reared in bolts from trees that experienced water deficit emerged with a higher fat content, demonstrating for the first time experimentally that drought conditions benefit mountain pine beetles. Further, our study demonstrated that volatile chemical emission from tree boles and phloem chemistry place the hybrid tree chemotype in-between lodgepole pine and jack pine, which might facilitate the host shift from lodgepole pine to jack pine.

  1. Triplet-repeat microsatellites shared among hard and soft pines.

    Science.gov (United States)

    Kutil, B L; Williams, C G

    2001-01-01

    Vascular plant species have shown a low level of microsatellite conservation compared to many animal species. Finding trans-specific microsatellites for plants may be improved by using a priori knowledge of genome organization. Fifteen triplet-repeat microsatellites from hard pine (Pinus taeda L.) were tested for trans-specific amplification across seven hard pines (P. palustris Mill., P. echinata Mill., P. radiata D. Don., P. patula Schiede et Deppe, P. halepensis Mill., P. kesiya Royle), a soft pine (P. strobus L.), and Picea rubens Sargent. Seven of 15 microsatellites had trans-specific amplification in both hard and soft pine subgenera. Two P. taeda microsatellites had conserved flanking regions and repeat motifs in all seven hard pines, soft pine P. strobus, and P. rubens. Perfect triplet-repeat P. taeda microsatellites appear to be better candidates for trans-specific polymorphism than compound microsatellites. Not all perfect triplet-repeat microsatellites were conserved, but all conserved microsatellites had perfect repeat motifs. Persistent microsatellites PtTX2123 and PtTX3020 had highly conserved flanking regions and a conserved repeat motif composition with variable repeat unit numbers. Using trinucleotide microsatellites improved trans-specific microsatellite recovery among hard and soft pine species.

  2. Cadmium Removal from Aqueous Solutions by Ground Pine Cone

    Directory of Open Access Journals (Sweden)

    H Izanloo, S Nasseri

    2005-01-01

    Full Text Available A study on the removal of cadmium ions from aqueous solutions by pine cone was conducted in batch conditions. Kinetic data and equilibrium removal isotherms were obtained. The influence of different experimental parameters such as contact time, initial concentration of cadmium, pine cone mass and particle size, and temperature on the kinetics of cadmium removal was studied. Results showed that the main parameters that played an important role in removal phenomenon were initial cadmium concentration, particle size and pine cone mass. The necessary time to reach equilibrium was between 4 and 7 hours based on the initial concentration of cadmium. The capacity of cadmium adsorption at equilibrium increased with the decrease of pine cone particle size. The capacity of cadmium adsorption at equilibrium by pine cone increased with the quantity of pine cone introduced (1–4 g/L. Temperature in the range of 20-30°C showed a restricted effect on the removal kinetics (13.56 mg/g at 20°C and a low capacity of adsorption about 11.48 mg/g at 30°C. The process followed pseudo second-order kinetics. The cadmium uptake of pine cone was quantitatively evaluated using adsorption isotherms. Results indicated that the Langmuir model gave a better fit to the experimental data in comparison with the Freundlich equation.

  3. Fuel and stand characteristics in p. pine infested with mountain pine beetle, Ips beetle, and southwestern dwarf mistletoe in Colorado's Northern Front Range

    Science.gov (United States)

    Jennifer G. Klutsch; Russell D. Beam; William R. Jacobi; Jose F. Negron

    2008-01-01

    In the ponderosa pine forests of the northern Front Range of Colorado, downed woody debris amounts, fuel arrangement, and stand characteristics were assessed in areas infested with southwestern dwarf mistletoe (Arceuthobium vaginatum subsp. cryptopodum), mountain pine beetle (Dendroctonus ponderosae) and

  4. Characteristic of composite pine forests on Volga terraces of Tatarstan

    Directory of Open Access Journals (Sweden)

    N. B. Prokhorenko

    2017-04-01

    Full Text Available The structure of pine forests in various natural areas of European Russia depends on environmental conditions, specifics of soil and underlying parent rock. Types of pine forests are distinguished by such features as their species composition of the lower layers, structure of grass-shrub layer and the nature of its mosaic. The purpose of the study are regional features of the composite pine forests, distributed on ancient terraces of left bank of the Volga River in north-western Tatarstan, considering specifics of their position in the contact zone of coniferous-deciduous forests with steppes. The structure of the communities of the pine forests on such indicators as species richness, quantitative participation of species, their occurrence and horizontal structure of grass cover were analyzed, and detailed description of the stand and of its renewal was given. In addition, ecological and coenotic structure of communities of pine forests was investigated. It was found that group of types of composite pine forests on the slopes and flat sections of high Volga terraces in northwest of Tatarstan are distinguished by age and completeness of the stand, but is characterized by similar composition of dominant species of lower layer and microgroups in grass layer composition. These communities are characterized by high participation of meadow-steppe plants. This feature distinguishes them from composite pine forests that are found in the central part of the European Russia. This is due to the fact that the area of our study takes position of a buffer, with broad invasion of meadow and meadow-steppe species in the communities of pine forests, especially when anthropogenic disturbances take place. The probability of further transformation of pine stands in the direction of their xerophytization has been identified.

  5. On the relative contributions of wind vs. animals to seed dispersal of four Sierra Nevada pines.

    Science.gov (United States)

    Vander Wall, Stephen B

    2008-07-01

    Selective pressures that influence the form of seed dispersal syndromes are poorly understood. Morphology of plant propagules is often used to infer the means of dispersal, but morphology can be misleading. Several species of pines, for example, have winged seeds adapted for wind dispersal but owe much of their establishment to scatter-hoarding animals. Here the relative importance of wind vs. animal dispersal is assessed for four species of pines of the eastern Sierra Nevada that have winged seeds but differed in seed size: lodgepole pine (Pinus contorta murrayana, 8 mg); ponderosa pine (Pinus ponderosa ponderosa, 56 mg); Jeffrey pine (Pinus jeffreyi, 160 mg); and sugar pine (Pinus lambertiana, 231 mg). Pre-dispersal seed mortality eliminated much of the ponderosa pine seed crop (66%), but had much less effect on Jeffrey pine (32% of seeds destroyed), lodgepole pine (29%), and sugar pine (7%). When cones opened most filled seeds were dispersed by wind. Animals removed > 99% of wind-dispersed Jeffrey and sugar pine seeds from the ground within 60 days, but animals gathered only 93% of lodgepole pine seeds and 38% of ponderosa pine seeds during the same period. Animals gathered and scatter hoarded radioactively labeled ponderosa, Jeffrey, and sugar pine seeds, making a total of 2103 caches over three years of study. Only three lodgepole pine caches were found. Caches typically contained 1-4 seeds buried 5-20 mm deep, depths suitable for seedling emergence. Although Jeffrey and sugar pine seeds are initially wind dispersed, nearly all seedlings arise from animal caches. Lodgepole pine is almost exclusively wind dispersed, with animals acting as seed predators. Animals treated ponderosa pine in an intermediate fashion. Two-phased dispersal of large, winged pine seeds appears adaptive; initial wind dispersal helps to minimize pre-dispersal seed mortality whereas scatter hoarding by animals places seeds in sites with a higher probability of seedling establishment.

  6. Fire structures pine serotiny at different scales.

    Science.gov (United States)

    Hernández-Serrano, Ana; Verdú, Miguel; González-Martínez, Santiago C; Pausas, Juli G

    2013-12-01

    Serotiny (delayed seed release with the consequent accumulation of a canopy seedbank) confers fitness benefits in environments with crown-fire regimes. Thus, we predicted that serotiny level should be higher in populations recurrently subjected to crown-fires than in populations where crown-fires are rare. In addition, under a high frequency of fires, space and resources are recurrently available, permitting recruitment around each mother to follow the seed rain shadow. Thus, we also predicted spatial aggregation of serotiny within populations. We compared serotiny, considering both the proportion and the age of serotinous cones, in populations living in contrasting fire regimes for two iconic Mediterranean pine species (Pinus halepensis, P. pinaster). We framed our results by quantitatively comparing the strength of the fire-serotiny relationship with previous studies worldwide. For the two species, populations living under high crown-fire recurrence regimes had a higher serotiny level than those populations where the recurrence of crown-fires was low. For P. halepensis (the species with higher serotiny), populations in high fire recurrence regimes had higher fine-scale spatial aggregation of serotiny than those inhabiting low fire recurrence systems. The strength of the observed fire-serotiny relationship in P. halepensis is among the highest in published literature. Fire regime shapes serotiny level among populations, and in populations with high serotiny, recurrent fires maintain a significant spatial structure for this trait. Consequently, fire has long-term evolutionary implications at different scales, emphasizing its prominent role in shaping the ecology of pines.

  7. Wind noise under a pine tree canopy.

    Science.gov (United States)

    Raspet, Richard; Webster, Jeremy

    2015-02-01

    It is well known that infrasonic wind noise levels are lower for arrays placed in forests and under vegetation than for those in open areas. In this research, the wind noise levels, turbulence spectra, and wind velocity profiles are measured in a pine forest. A prediction of the wind noise spectra from the measured meteorological parameters is developed based on recent research on wind noise above a flat plane. The resulting wind noise spectrum is the sum of the low frequency wind noise generated by the turbulence-shear interaction near and above the tops of the trees and higher frequency wind noise generated by the turbulence-turbulence interaction near the ground within the tree layer. The convection velocity of the low frequency wind noise corresponds to the wind speed above the trees while the measurements showed that the wind noise generated by the turbulence-turbulence interaction is near stationary and is generated by the slow moving turbulence adjacent to the ground. Comparison of the predicted wind noise spectrum with the measured wind noise spectrum shows good agreement for four measurement sets. The prediction can be applied to meteorological estimates to predict the wind noise under other pine forests.

  8. The Pine Mountain Observatory Outreach Program

    Science.gov (United States)

    Bothun, G. D.; Kang, R.

    2000-12-01

    The Pine Mountain Observatory is located in Central Oregon at an elevation of 6700 feet. Three scopes of size 16, 24 and 32 inches are located there. Throughout the last decade we have run a robust summer visitors program which educates about 3000 people per year. Recently we have finished a Prime Focus CCD system for the 32-inch telescope. This system reads out in 5 seconds and has a shutter that can time as short as 10 milliseconds. The field of view is 36 x 36 arcminutes. We are currently engaged in a number of K12 teacher education projects. The biggest obstacle facing these teachers was their ability to handle FITS data. To solve this problem we have developed a robust JAVA applet for doing image analysis and automatic photometry on FITS data. In this talk we will demonstrate how a teacher can construct an HR diagram for the open cluster M39 where the root data are Blue and Red filter exposures each of duration 10 milliseconds. In such exposures, only the stars that are actually in M39 register on the detector. This flexibility allows Pine Mountain to be a unique resource for teachers as we can take custom data through a variety of filters which can then all be reduced inside a Web browser.

  9. Hyphal growth of Phytophtora cinnamomi on pine callus tissue.

    Science.gov (United States)

    Jang, J C; Tainter, F H

    1990-05-01

    A procedure was developed which demonstrates the expression of differential resistance in pine callus tissues to the fungal pathogen Phytophthora cinnamomi Rands. Callus tissues were maintained on a modified Murashige and Skoog medium with 10(-5)M 2,4-D and inoculated with hyphae of P. cinnamomi at 26°C in the dark. The number of intracellular hyphae was used as an index of resistance. Loblolly and loblolly × shortleaf pine hybrids were determined to be more resistant to infection and invasion by the fungus than were shortleaf and Virginia pine.

  10. Documentation and user guides for SPBLOB: a computer simulation model of the join population dynamics for loblolly pine and the southern pine beetle

    Science.gov (United States)

    John Bishir; James Roberds; Brian Strom; Xiaohai Wan

    2009-01-01

    SPLOB is a computer simulation model for the interaction between loblolly pine (Pinus taeda L.), the economically most important forest crop in the United States, and the southern pine beetle (SPB: Dendroctonus frontalis Zimm.), the major insect pest for this species. The model simulates loblolly pine stands from time of planting...

  11. Interaction of an invasive bark beetle with a native forest pathogen: Potential effect of dwarf mistletoe on range expansion of mountain pine beetle in jack pine forests

    Science.gov (United States)

    Jennifer Klutsch; Nadir Erbilgin

    2012-01-01

    In recent decades, climate change has facilitated shifts in species ranges that have the potential to significantly affect ecosystem dynamics and resilience. Mountain pine beetle (Dendroctonus ponderosae) is expanding east from British Columbia, where it has killed millions of pine trees, primarily lodgepole pine (Pinus contorta...

  12. Evaluating potential fire behavior in lodgepole pine-dominated forests after a mountain pine beetle epidemic in north-central Colorado

    Science.gov (United States)

    Jennifer G. Klutsch; Mike A. Battaglia; Daniel R. West; Sheryl L. Costello; Jose F. Negron

    2011-01-01

    A mountain pine beetle outbreak in Colorado lodgepole pine forests has altered stand and fuel characteristics that affect potential fire behavior. Using the Fire and Fuels Extension to the Forest Vegetation Simulator, potential fire behavior was modeled for uninfested and mountain pine beetle-affected plots 7 years after outbreak initiation and 10 and 80% projected...

  13. Prey handling and diet of Louisiana pine snakes (Pituophis ruthveni) and black pine snakes (P. melanoleucus lodingi), with comparisons to other selected colubrid snakes

    Science.gov (United States)

    D. Craig Rudolph; Shirley J. Burgdorf; Richard N. Conner; Christopher S. Collins; Daniel Saenz; Richard R. Schaefer; Toni Trees; C. Michael Duran; Marc Ealy; John G. Himes

    2002-01-01

    Diet and prey handling behavior were determined for Louisiana pine snakes (Pituophis ruthveni) and black pine snakes (P. melanoleucus lodingi). Louisiana pine snakes prey heavily on Baird's pocket gophers (Geomys breviceps), with which they are sympatric, and exhibit specialized behaviors that facilitate...

  14. White collar crime

    OpenAIRE

    Burgos, Álvaro

    2016-01-01

    The White Collar Crime has particular characteristics that range from the profile of its author to the difficulties of the criminal process where it is investigated. El delito de Cuello Blanco cuenta con características particulares desde el perfil de su autor, hasta las dificultades del proceso penal en que se investiga.

  15. white's friction factor formulae

    African Journals Online (AJOL)

    HOD

    Environmental Engineering, Elizade University, Ilara Monkin, Ondo State. NIGERIA. ACCURATE SOLUTIONS OF COLEBROOK- WHITE'S FRICTION FACTOR FORMULAE. S. Lukman1 and I. A. Oke2,*. 1 CIVIL ENGINEERING DEPARTMENT, UNIVERSITY OF HAFR AL-BATIN, HAFR AL-BATIN, SAUDI ARABIA. 2 CIVIL ...

  16. White matter lesion progression

    DEFF Research Database (Denmark)

    Hofer, Edith; Cavalieri, Margherita; Bis, Joshua C

    2015-01-01

    BACKGROUND AND PURPOSE: White matter lesion (WML) progression on magnetic resonance imaging is related to cognitive decline and stroke, but its determinants besides baseline WML burden are largely unknown. Here, we estimated heritability of WML progression, and sought common genetic variants asso...

  17. White Sea - Russia

    Science.gov (United States)

    2002-01-01

    At bottom center of this true-color Moderate Resolution Imaging Spectroradiometer (MODIS) image from April 13, 2001, the White Sea in western Russia is becoming free of ice in its southern extent. Meanwhile, the blue-green waters along the coast of the peninsula jutting out into the Barents Sea to the northeast could be due to a phytoplankton bloom.

  18. White-tailed deer

    Science.gov (United States)

    Paul E. Johns; John C. Kilgo

    2005-01-01

    from a public relations standpoint, the white-tailed deer (Odocileus virginiamus) is probably the most important wildlife species occurring on the Savannah River Site (SRS). The SRS deer herd has been the subject of more scientific investigations than any comparable deer population in the world, resulting in more than 125 published papers. Each year...

  19. probably mostly white

    African Journals Online (AJOL)

    Willem Scholtz

    internet – the (probably mostly white) public's interest in the so-called Border War is ostensibly at an all-time high. By far most of the publications are written by ex- ... understanding of this very important episode in the history of Southern Africa. It was, therefore, with some anticipation that one waited for this book, which.

  20. White dots do matter

    DEFF Research Database (Denmark)

    Soeken, Mathias; Thomsen, Michael Kirkedal

    2013-01-01

    Toffoli circuits. We also show how to use these rules to derive more complex formulas. The major difference compared to existing approaches is the use of negative controls (white dots), which significantly increases the algebraic strength. We show how existing optimisation approaches can be adapted...

  1. Effect of a fire retardant on the ignition of pine wood exposed to smoldering particles of pine bark

    Science.gov (United States)

    Kasymov, Denis; Paletsky, Alexander

    2017-10-01

    This paper represents the laboratory research results on the interaction of smoldering pine bark particles with pine wood. Fire retardant treatment "FUKAM" was studied to estimate its effect on the probability of wood ignition. The wind speed and the number and geometric sizes of particles were varied in the experiments. The results have shown that the increase in the wind speed leads to the increase in the probability of wood ignition by the particles of the same size, and fire-retardant treatment significantly increases the protective properties of wood exposed to smoldering pine bark particles.

  2. Effect of a fire retardant on the ignition of pine wood exposed to smoldering particles of pine bark

    Directory of Open Access Journals (Sweden)

    Kasymov Denis

    2017-01-01

    Full Text Available This paper represents the laboratory research results on the interaction of smoldering pine bark particles with pine wood. Fire retardant treatment "FUKAM" was studied to estimate its effect on the probability of wood ignition. The wind speed and the number and geometric sizes of particles were varied in the experiments. The results have shown that the increase in the wind speed leads to the increase in the probability of wood ignition by the particles of the same size, and fire-retardant treatment significantly increases the protective properties of wood exposed to smoldering pine bark particles.

  3. Soil contamination with silver nanoparticles reduces Bishop pine growth and ectomycorrhizal diversity on pine roots

    Energy Technology Data Exchange (ETDEWEB)

    Sweet, M. J., E-mail: m.sweet@derby.ac.uk [University of Derby, Environmental Sustainability Research Centre, College of Life and Natural Sciences (United Kingdom); Singleton, I. [Newcastle University, School of Biology (United Kingdom)

    2015-11-15

    Soil contamination by silver nanoparticles (AgNP) is of potential environmental concern but little work has been carried out on the effect of such contamination on ectomycorrhizal fungi (EMF). EMF are essential to forest ecosystem functions as they are known to enhance growth of trees by nutrient transfer. In this study, soil was experimentally contaminated with AgNP (0, 350 and 790 mg Ag/kg) and planted with Bishop pine seedlings. The effect of AgNP was subsequently measured, assessing variation in pine growth and ectomycorrhizal diversity associated with the root system. After only 1 month, the highest AgNP level had significantly reduced the root length of pine seedlings, which in turn had a small effect on above ground plant biomass. However, after 4 months growth, both AgNP levels utilised had significantly reduced both pine root and shoot biomass. For example, even the lower levels of AgNP (350 mg Ag/kg) soil, reduced fresh root biomass by approximately 57 %. The root systems of the plants grown in AgNP-contaminated soils lacked the lateral and fine root development seen in the control plants (no AgNP). Although, only five different genera of EMF were found on roots of the control plants, only one genus Laccaria was found on roots of plants grown in soil containing 350 mg AgNP/kg. At the higher levels of AgNP contamination, no EMF were observed. Furthermore, extractable silver was found in soils containing AgNP, indicating potential dissolution of silver ions (Ag+) from the solid AgNP.

  4. Examining pine spectral separability using hyperspectral data from an airborne sensor : an extension of field-based results

    CSIR Research Space (South Africa)

    Van Aardt, JAN

    2007-01-01

    Full Text Available Three southern USA forestry species, loblolly pine (Pinus taeda), Virginia pine (Pinus virginiana), and shortleaf pine (Pinus echinata), were previously shown to be spectrally separable (83% accuracy) using data from a full-range spectro...

  5. Cultured cells of white pine show genetic resistance to axenic blister rust hyphae.

    Science.gov (United States)

    Diner, A M; Mott, R L; Amerson, H V

    1984-04-27

    Hypersensitive resistance to axenically cultured Cronartium ribicola was displayed by subcultured callus of Pinus lambertiana. Cellular resistance to a destructive rust disease can now be studied at the macromolecular level through use of cloned cells of both host and pathogen in a system amenable to emerging recombinant DNA technology.

  6. Complex Response of White Pines to Past Environmental Variability Increases Understanding of Future Vulnerability

    OpenAIRE

    Virginia Iglesias; Teresa R Krause; Cathy Whitlock

    2015-01-01

    Ecological niche models predict plant responses to climate change by circumscribing species distributions within a multivariate environmental framework. Most projections based on modern bioclimatic correlations imply that high-elevation species are likely to be extirpated from their current ranges as a result of rising growing-season temperatures in the coming decades. Paleoecological data spanning the last 15,000 years from the Greater Yellowstone region describe the response of vegetation t...

  7. 75 FR 66779 - Ruby Lake National Wildlife Refuge, Elko and White Pine Counties, NV; Comprehensive Conservation...

    Science.gov (United States)

    2010-10-29

    ...-dependent recreation, environmental education, and cultural resources. During public scoping, we may... development of the CCP. Background The CCP Process The National Wildlife Refuge System Administration Act of... observation and photography, and environmental education and interpretation. We will review and update the CCP...

  8. Oleoresin, Chemistry and Spectral Reflectance in "Stressed" Lodgepole and White Bark Pine, Mammoth Mountain, California

    Science.gov (United States)

    Hickey, James C.; Birnie, Richard W.; Zhao, Mei-Xun

    2001-01-01

    Development of methods to identify the physical and chemical character of materials on the earth's surface is one of the foci of hyperspectral remote sensing activities. Enhancing the ability to elucidate changes in foliar chemistry that relate to the health of a plant is a benefit to plant physiologists, foresters, and plant ecologists, as well as geologist and environmental scientists. Vegetation covers the landscape throughout the temperate and tropical regions of the earth. The existence of vegetation in these areas presents special problems to remote sensing systems since geologic bedrock and alteration zones are masked. At times, however, alterations in the soil/sediment geochemical environment result in foliar chemical changes that are detectable via remote sensing. Examples include monitoring of chlorophyll reflectance/fluorescence and equivalent water thickness indices as indicators of drought-induced plant stress. Another processing and interpretation approach used with hyperspectral data has been principal components analysis (PCA). Rowan et al. used PCA to identify absorption feature patterns obtained from vegetated areas with discrete bedrock geology or mineralization as the substrate. Many researchers highlight the need to advance our ability for hyperspectral imaging in vegetated areas as a near-term priority.

  9. Seed dispersal in limber and southwestern white pine: Comparing core and peripheral populations

    Science.gov (United States)

    Diana F. Tomback; Sheridan Samano; Elizabeth L. Pruett; Anna W. Schoettle

    2011-01-01

    According to the geographic mosaic theory of coevolution (Thompson 2005), the potential for coevolutionary relationships between interacting species varies with the presence of other species within a community. This implies that the strength of coevolution between two species may vary geographically. In this study, we ask whether there is a shift in vertebrate seed...

  10. Similar but not equivalent: ecological niche comparison across closely-related Mexican white pines

    NARCIS (Netherlands)

    Aguirre-Gutiérrez, J.; Serna-Chavez, H.M.; Villalobos-Arambula, A.R.; Pérez de la Rosa, J.A.; Raes, N.

    2015-01-01

    Aim In the face of global environmental change, identifying the factors that shape the ecological niches of species and understanding the mechanisms behind them can help to draft effective conservation plans. The differences in the ecological factors that shape species distributions may then help to

  11. Similar but not equivalent: ecological niche comparison across closely-related Mexican white pines

    OpenAIRE

    Aguirre-Gutiérrez, J.; Serna-Chavez, H.M.; Villalobos-Arambula, A.R.; Pérez de la Rosa, J.A.; Raes, N.

    2015-01-01

    Aim In the face of global environmental change, identifying the factors that shape the ecological niches of species and understanding the mechanisms behind them can help to draft effective conservation plans. The differences in the ecological factors that shape species distributions may then help to highlight differences between closely related taxa. We investigate the applicability of ecological niche modelling and the comparison of species distributions in ecological niche space to detect a...

  12. Characterization of white OLEDs

    Science.gov (United States)

    Chen, Wenbin; Lu, Lili

    2007-11-01

    White OLEDs (WOLEDs) have attracted much attention for several applications, such as backlights in LCD, full-color OLED display using on-chip color filters, and low cost illumination sources. OLEDs have typically very broad emissions, which makes them uniquely suitable for light source applications. In this paper, some fundamentals of the CIE colorimetry system including the color-rendering index are described. Given the spectral power distribution of WOLED, the parameters of a light source (chromaticity coordinate, CCT, CRI, and the luminous efficacy) can be calculated. A MATLAB program for this purpose is developed in this paper. WOLEDs utilizing two primary-color emitters are fabricated. NPB doped with 2% Rubrene is used as the red-emitting layer and anthracene derivative as the blue-emitting layer. With a structure of ITO/2TNATA(20nm)/NPB(20 nm)/ NPB:rubrene(2%)(10nm)/ anthracene (30 nm)/Alq 3(20nm)LiF(1nm)/Al(100nm), a white light with CIE coordinates of (0.34, 0.37) is generated. The color properties are presented in this paper. The results show that the white color can be created from numerous combinations of different spectra. Based upon this, the characterization of the WOLED is simulated and the design of WOLED for illumination is discussed. In contrary to light source applications where illumination quality white is the most important, all colors are equally important for display applications. The white spectrum of the two-emitter WOLED is transmitted through the typical red, blue and green color filters. The performance of this color display is simulated and the WOLED design for display application is discussed.

  13. Weathering the storm: how lodgepole pine trees survive mountain pine beetle outbreaks.

    Science.gov (United States)

    Erbilgin, Nadir; Cale, Jonathan A; Hussain, Altaf; Ishangulyyeva, Guncha; Klutsch, Jennifer G; Najar, Ahmed; Zhao, Shiyang

    2017-06-01

    Recent mountain pine beetle outbreaks in western North America killed millions of lodgepole pine trees, leaving few survivors. However, the mechanism underlying the ability of trees to survive bark beetle outbreaks is unknown, but likely involve phytochemicals such as monoterpenes and fatty acids that can drive beetle aggregation and colonization on their hosts. Thus, we conducted a field survey of beetle-resistant lodgepole pine (Pinus contorta) trees to retrospectively deduce whether these phytochemicals underlie their survival by comparing their chemistry to that of non-attacked trees in the same stands. We also compared beetle attack characteristics between resistant and beetle-killed trees. Beetle-killed trees had more beetle attacks and longer ovipositional galleries than resistant trees, which also lacked the larval establishment found in beetle-killed trees. Resistant trees contained high amounts of toxic and attraction-inhibitive compounds and low amounts of pheromone-precursor and synergist compounds. During beetle host aggregation and colonization, these compounds likely served three critical roles in tree survival. First, low amounts of pheromone-precursor (α-pinene) and synergist (mycrene, terpinolene) compounds reduced or prevented beetles from attracting conspecifics to residual trees. Second, high amounts of 4-allyanisole further inhibited beetle attraction to its pheromone. Finally, high amounts of toxic limonene, 3-carene, 4-allyanisole, α-linolenic acid, and linoleic acid inhibited beetle gallery establishment and oviposition. We conclude that the variation of chemotypic expression of local plant populations can have profound ecological consequences including survival during insect outbreaks.

  14. Interpopulation variability of Austrian pine (Pinus nigra Arnold in Serbia

    Directory of Open Access Journals (Sweden)

    Lučić Aleksandar

    2013-01-01

    Full Text Available Multidisciplinary studies (genetic and phytocoenological of 4 populations of Austrian pine (Pinus nigra Arnold were carried out in western and central Serbia. The obtained results gave the same inter-population arrangement in both methods. Dendograms (NTSYS differentiate at the greatest genetic distance the population of Austrian pine in Šargan compared to other populations: Crni Vrh, Goč and Studenica. Using phytocoenological analysis it was determined that population of Austrian pine in Šargan forms a community Erico-Pinetum gocensis, while the other populations form a community Seslerio rigidae-Pinetum gocensis. Multidisciplinary approach that was demonstrated within this paper presents the first studies of Austrian pine that directly link genotype dependence and environmental conditions manifested through the phytocoenological affiliation. [Projekat Ministarstva nauke Republike Srbije, br. TR 31070

  15. "Reversed" intraguild predation: red fox cubs killed by pine marten.

    Science.gov (United States)

    Brzeziński, Marcin; Rodak, Lukasz; Zalewski, Andrzej

    2014-01-01

    Camera traps deployed at a badger Meles meles set in mixed pine forest in north-eastern Poland recorded interspecific killing of red fox Vulpes vulpes cubs by pine marten Martes martes . The vixen and her cubs settled in the set at the beginning of May 2013, and it was abandoned by the badgers shortly afterwards. Five fox cubs were recorded playing in front of the den each night. Ten days after the first recording of the foxes, a pine marten was filmed at the set; it arrived in the morning, made a reconnaissance and returned at night when the vixen was away from the set. The pine marten entered the den several times and killed at least two fox cubs. It was active at the set for about 2 h. This observation proves that red foxes are not completely safe from predation by smaller carnivores, even those considered to be subordinate species in interspecific competition.

  16. Effect of ponderosa pine needle litter on grass seedling survival.

    Science.gov (United States)

    Burt R. McConnell; Justin G. Smith

    1971-01-01

    Hard fescue survival rates were followed for 6 years on four different pine needle treatment plots. Needle litter had a significant effect on initial survival of fescue seedlings, but subsequent losses undoubtedly resulted from the interaction of many factors.

  17. Methanotrophic abundance and community fingerprint in pine and ...

    African Journals Online (AJOL)

    methanotrophs) is important to assess the microbial oxidation of the greenhouse gas methane (CH4) in soil under different land uses. Soil samples were collected from two plantation plots of pine and tea in southern China. Methanotrophic abundance ...

  18. Chapter 5. Dynamics of ponderosa and Jeffrey pine forests

    Science.gov (United States)

    Penelope Morgan

    1994-01-01

    Ponderosa (Pinus ponderosa) and Jeffrey pine (Pinus jefferyi) forests are ecologically diverse ecosystems. The communities and landscapes in which these trees dominate are variable and often complex. Because of the economic value of resources, people have used these forests extensively.

  19. Vegetation - Pine Creek WA and Fitzhugh Creek WA [ds484

    Data.gov (United States)

    California Department of Resources — This fine-scale vegetation classification and map of the Pine Creek and Fitzhugh Creek Wildlife Areas, Modoc County, California was created following FGDC and...

  20. Straight studs from southern pine veneer cores and cordwood

    Science.gov (United States)

    Peter Koch

    1968-01-01

    An economically feasible system has been developed for converting southern pine veneer cores into straight 8-foot studs (2). Prototype studs - two per core - were 100 percent SPIB stud grade and better.

  1. Afforestation at Seney National Wildlife Refuge : 2-yr. results of Smith and Conlon Farm eastern white pine plantings and Driggs River Rd. opening red pine and eastern white pine (trans)plantings

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document describes the 2-year results of treatments for promoting secondary succession within specific farm (hay) fields (Conlon and Smith Farms) and the xeric...

  2. Plato: White and Non-white Love

    Directory of Open Access Journals (Sweden)

    Amo Sulaiman

    2009-06-01

    Full Text Available Plato’s dialogues, the Symposium, and Phaedrus, provide a reasonableexplanation of love. G. Vlastos and M. Nussbaum do not share such anopinion. The former contends that Plato’s view of love is about lovingonly a person’s beauty, but not the entire person; thus, it falls short of anappropriate explanation of love. The latter holds that a theory of love should be complete, and that Plato’s one is incomplete on the grounds that it does not account for personal love. These criticisms will be re-evaluated in light of the duality of love (the white and non-white horses—in Phaedrus as well as participants’ views in the Symposium; a re-assessment will weaken the mentioned objections. This paper contends that from the Symposium and Phaedrus, one can have a fruitful understanding of being in love, being out of love, falling inlove, loving for its own sake and being erotically in love. In order to account for these related issues of love it is important to consider Plato’s works in terms of his “official” and “unofficial” views. The former is construed as the doctrine of the lover or loving for its own sake: this is associates with Diotima’s views which are repeated by Socrates. With reference to the latter, it is possible to explain what personal love or being in love, being out of love, falling in love, and being erotically in love involve. Erotic love will be interpreted as an extension of our philosophical conception of love, related to views of love that are mentioned in the Symposium other than Socrates’ report of Diotima’s conceptions. This paper is divided into two parts: the first one will show views of love in the Symposium. That is, being in love, being out of love, falling in love and loving for its own sake will be discussed. In addition, the forementioned criticisms will be re-evaluated. In the second section, we will show that Aristophanes’ speech expresses erotic love, and then Kant’s objections will be

  3. Comparison of lodgepole and jack pine resin chemistry: implications for range expansion by the mountain pine beetle, Dendroctonus ponderosae (Coleoptera: Curculionidae

    Directory of Open Access Journals (Sweden)

    Erin L. Clark

    2014-02-01

    Full Text Available The mountain pine beetle, Dendroctonus ponderosae, is a significant pest of lodgepole pine in British Columbia (BC, where it has recently reached an unprecedented outbreak level. Although it is native to western North America, the beetle can now be viewed as a native invasive because for the first time in recorded history it has begun to reproduce in native jack pine stands within the North American boreal forest. The ability of jack pine trees to defend themselves against mass attack and their suitability for brood success will play a major role in the success of this insect in a putatively new geographic range and host. Lodgepole and jack pine were sampled along a transect extending from the beetle’s historic range (central BC to the newly invaded area east of the Rocky Mountains in north-central Alberta (AB in Canada for constitutive phloem resin terpene levels. In addition, two populations of lodgepole pine (BC and one population of jack pine (AB were sampled for levels of induced phloem terpenes. Phloem resin terpenes were identified and quantified using gas chromatography. Significant differences were found in constitutive levels of terpenes between the two species of pine. Constitutive α-pinene levels – a precursor in the biosynthesis of components of the aggregation and antiaggregation pheromones of mountain pine beetle – were significantly higher in jack pine. However, lower constitutive levels of compounds known to be toxic to bark beetles, e.g., 3-carene, in jack pine suggests that this species could be poorly defended. Differences in wounding-induced responses for phloem accumulation of five major terpenes were found between the two populations of lodgepole pine and between lodgepole and jack pine. The mountain pine beetle will face a different constitutive and induced phloem resin terpene environment when locating and colonizing jack pine in its new geographic range, and this may play a significant role in the ability of the

  4. Vermicompost enhances germination of the maritime pine (Pinus pinaster Ait.)

    OpenAIRE

    Lazcano, Cristina; Sampedro Pérez, Luis; Zas Arregui, Rafael; Domínguez, Jorge

    2010-01-01

    We investigated the effect of vermicompost on the germination and early development of six different progenies of the maritime pine (Pinus pinaster Ait.). We compared the effects of incorporating solid vermicompost into the potting media to those of vermicompost water extract to asses the extent of not physically-mediated positive effects. The incorporation of vermicompost in the growing media of maritime pine increased germination by 16%, and particularly, addition of vermicom...

  5. Evaluation of dimensional stability of tropical pine species

    OpenAIRE

    Trianoski, Rosilani; Matos, Jorge Luis Monteiro de; Iwakiri, Setsuo; Prata, José Guilherme

    2013-01-01

    The objective of this research was to evaluate the dimensional stability of tropical pine species and establish correlations between shrinkage, anisotropy, and density. Seven species of tropical pines were utilized: Pinus caribaea var. bahamensis, Pinus caribaea var. caribaea, Pinus caribaea var. hondurensis, Pinus chiapensis, Pinus maximinoi, Pinus oocarpa, and Pinus tecunumanii; Pinus taeda was also used as reference. The samples were from 17 and 18-year-old experimental plantings located i...

  6. Response of Korean pine's functional traits to geography and climate.

    Directory of Open Access Journals (Sweden)

    Yichen Dong

    Full Text Available This study analyzed the characteristics of Korean pine (Pinus koraiensis functional trait responses to geographic and climatic factors in the eastern region of Northeast China (41°-48°N and the linear relationships among Korean pine functional traits, to explore this species' adaptability and ecological regulation strategies under different environmental conditions. Korean pine samples were collected from eight sites located at different latitudes, and the following factors were determined for each site: geographic factors-latitude, longitude, and altitude; temperature factors-mean annual temperature (MAT, growth season mean temperature (GST, and mean temperature of the coldest month (MTCM; and moisture factors-annual precipitation (AP, growth season precipitation (GSP, and potential evapotranspiration (PET. The Korean pine functional traits examined were specific leaf area (SLA, leaf thickness (LT, leaf dry matter content (LDMC, specific root length (SRL, leaf nitrogen content (LNC, leaf phosphorus content (LPC, root nitrogen content (RNC, and root phosphorus content (RPC. The results showed that Korean pine functional traits were significantly correlated to latitude, altitude, GST, MTCM, AP, GSP, and PET. Among the Korean pine functional traits, SLA showed significant linear relationships with LT, LDMC, LNC, LPC, and RPC, and LT showed significant linear relationships with LDMC, SRL, LNC, LPC, RNC, and RPC; the linear relationships between LNC, LPC, RNC, and RPC were also significant. In conclusion, Korean pine functional trait responses to latitude resulted in its adaptation to geographic and climatic factors. The main limiting factors were precipitation and evapotranspiration, followed by altitude, latitude, GST, and MTCM. The impacts of longitude and MAT were not obvious. Changes in precipitation and temperature were most responsible for the close correlation among Korean pine functional traits, reflecting its adaption to habitat

  7. Radiocesium in a Danish pine forest ecosystem

    DEFF Research Database (Denmark)

    Strandberg, M.

    1994-01-01

    During the autumn of 1991, a Scots pine forest, Tisvilde Hegn, was investigated with respect to the distribution of radiocesium on compartments in the forest ecosystem. The sandy acidic soil is poor, with a approximately 5-cm thick layer of organic soil, and clay content is very low, between 0...... of the different components of the forest ecosystem to accumulate radiocesium. OR is defined as the ratio between the content of Cs-137 kg-1 (dry wt.) and the deposition per meter square. In vascular plants, mosses and lichens, OR varied between 0.01 and 0.1 m2/kg. In fungi, it varied between 0.05 and 4.5 m2/kg......-natural ecosystems in Denmark....

  8. The Jung-White Letters

    OpenAIRE

    Frank, Kirsten; Nielsen, Sine Birkedal

    2012-01-01

    This report is based on the correspondence The Jung-White Letters, between psychotherapist C. G. Jung and theologian Victor White. Their correspondence deals mainly with the relationship between religion and science. The report analyses Jung and White's conflict on the subject of evil as understood in the Christian doctrine privatio boni, investigating the underlying epistemological reasoning behind their disagreement. Theologian White is influenced by the Catholic Dominican order, whose phil...

  9. Perceived Whiteness under Different Lighting Conditions

    Science.gov (United States)

    Oota, Akiko; Kanaya, Sueko; Ayama, Miyoshi; Mukai, Kenji

    Many white and nearly white objects are in our living and working areas, such as documents written on white paper, white curtains, white clothes, white walls, and white furniture. The perceived whiteness of these objects is important to the impression of the lighting in these areas. To investigate the perceived whiteness in living areas, a series of experiments were conducted using four different fluorescent lamps in three different environments. It was found that the areas of perceived whiteness in the living area environments were larger than the areas of perceived whiteness under achromatic conditions. Based on these results, a perceived whiteness index is proposed for these experimental conditions.

  10. White noise on bialgebras

    CERN Document Server

    Schürmann, Michael

    1993-01-01

    Stochastic processes with independent increments on a group are generalized to the concept of "white noise" on a Hopf algebra or bialgebra. The main purpose of the book is the characterization of these processes as solutions of quantum stochastic differential equations in the sense of R.L. Hudsonand K.R. Parthasarathy. The notes are a contribution to quantum probability but they are also related to classical probability, quantum groups, and operator algebras. The Az ma martingales appear as examples of white noise on a Hopf algebra which is a deformation of the Heisenberg group. The book will be of interest to probabilists and quantum probabilists. Specialists in algebraic structures who are curious about the role of their concepts in probablility theory as well as quantum theory may find the book interesting. The reader should havesome knowledge of functional analysis, operator algebras, and probability theory.

  11. Mountain pine beetle infestation: GCxGCTOFMS and GC-MS of lodgepole pine (pinus contorta) acetone extractives

    Science.gov (United States)

    Roderquita K. Moore; Michael Leitch; Erick Arellano-ruiz; Jonathon Smaglick; Doreen Mann

    2015-01-01

    The Rocky Mountains and western U.S. forests are impacted by the infestation of mountain pine beetles (MPB). MPB outbreak is killing pine and spruce trees at an alarming rate. These trees present a fuel build-up in the forest, which can result in catastrophic wildland fires. MPB carry blue-stain fungi from the genus Ophiostoma and transmit infection by burrowing into...

  12. Influence of Mountain Pine Beetle on Fuels, Foliar Fuel Moisture Content, and Litter and Volatile Terpenes in Whitebark Pine

    OpenAIRE

    Toone, Chelsea

    2013-01-01

    Mountain pine beetle (Dendroctonus ponderosae Hopkins) has caused extensive tree mortality in whitebark pine (Pinus albicaulis Engelm) forests. Previous studies conducted in various conifer forests have shown that fine surface fuels are significantly altered during a bark beetle outbreak. Bark beetle activity in conifer stands has also been shown to alter foliar fuel moisture content and chemistry over the course of the bark beetle rotation.The objective of this study was to evaluate changes ...

  13. WHITE CELLS AS LIGHT GATHERERS.

    Science.gov (United States)

    The use of White cells (J. V. White . ’Long optical paths at large aperture’, J. Opt. Soc. Am. 32:285 (1942)) as light gatherers is analyzed in this...unobservable. It is evident, therefore, that White cells and the sources used with them must be properly designed and applied to be effective. (Author)

  14. White dwarf planets

    Directory of Open Access Journals (Sweden)

    Bonsor Amy

    2013-04-01

    Full Text Available The recognition that planets may survive the late stages of stellar evolution, and the prospects for finding them around White Dwarfs, are growing. We discuss two aspects governing planetary survival through stellar evolution to the White Dwarf stage. First we discuss the case of a single planet, and its survival under the effects of stellar mass loss, radius expansion, and tidal orbital decay as the star evolves along the Asymptotic Giant Branch. We show that, for stars initially of 1 − 5 M⊙, any planets within about 1 − 5 AU will be engulfed, this distance depending on the stellar and planet masses and the planet's eccentricity. Planets engulfed by the star's envelope are unlikely to survive. Hence, planets surviving the Asymptotic Giant Branch phase will probably be found beyond ∼ 2 AU for a 1  M⊙ progenitor and ∼ 10 AU for a 5 M⊙ progenitor. We then discuss the evolution of two-planet systems around evolving stars. As stars lose mass, planet–planet interactions become stronger, and many systems stable on the Main Sequence become destabilised following evolution of the primary. The outcome of such instabilities is typically the ejection of one planet, with the survivor being left on an eccentric orbit. These eccentric planets could in turn be responsible for feeding planetesimals into the neighbourhood of White Dwarfs, causing observed pollution and circumstellar discs.

  15. White Rose project

    Energy Technology Data Exchange (ETDEWEB)

    Roach, W. [Husky Oil Operations Ltd., Calgary, AB (Canada)

    2002-07-01

    The status of Husky's White Rose Project off the Grand Banks of Newfoundland was presented with particular focus on project achievements from October 2000 to March 2002, execution strategy and the challenge of delivering the project safely, in an environmentally sensitive manner, both on schedule and within budget. The project is the third oil development offshore Newfoundland and Labrador where recoverable reserves are estimated at 884 MMbbls for Hibernia, 40 MMbbls for Terra Nova, and 200 to 250 MMbbls for the White Rose project. Cost competitive methods can be used to develop White Rose, which will then stimulate more exploration activity and expand the base of experienced individuals. This presentation included computer generated images of the field layout depicting 3 glory holes or drill centres. The well count is currently at 21 wells of which 10 are at the stage of first oil. Production capacity is 100 bbls per day. Graphs depicting drilling performance were also included, along with the FPSO execution strategy, turret schematics, and the project schedule. tabs., figs.

  16. Snow bending of sugar pine and ponderosa seedlings ... injury not permanent.

    Science.gov (United States)

    William W. Oliver

    1970-01-01

    Sugar pine and ponderosa pine seedlings in the Sierra Nevada, California, with stems bent by heavy snow loads were photographed the next summer and 10 years later. The photographs show that all trees recovered, leaving no permanent stem crook.

  17. EVALUATION OF DIFFERENT DNA ISOLATION METHODS FROM PINE HONEY

    Directory of Open Access Journals (Sweden)

    Bekir Çöl

    2016-12-01

    Full Text Available Honey is a sweet food made by bees and some other insects. Pine honey is a type of honey which is produced by honey bees from the sugary secretions made by the some insect species, such as Marchalina hellenica, living on the pine trees. Pine honey is mostly produced in the Mediterranean countries such as Turkey and some regions of Greece. Honey is a highly consumed natural food product and it is associated with numerous health benefits. The knowledge of physiochemical and biological properties of honey as well as its floral origin is very important. Knowing the diversity of pollens, microorganism content of honey or ensuring its GMO (genetically modified organisms status is significant both in terms of health and economy. To obtain such information, one of the most effective ways is to analyze the DNA of pine honey and identify the biological species it contains.  Due to the nature of pine honey such as its viscosity and the presence of inhibitors, there is not a perfect reliable convincing DNA isolation method available to date.  In this study, we collected pine honey samples from Mugla region (Turkey and isolated DNA from the precipitated pollens of the honey using three different DNA isolation approaches. These methods include a modified CTAB method, manual silica dioxide approach and DNeasy Plant Mini Kit. DNA extraction protocols were compared in terms of DNA yield and purity. We demonstrate that the use of DNeasy plant kit has given relatively better results under the conditions of the current study for the Pine honey of Muğla.

  18. The White Rabbit project

    CERN Document Server

    Serrano, J; Gousiou, E; van der Bij, E; Wlostowski, T; Daniluk, G; Lipinski, M

    2013-01-01

    White Rabbit (WR) is a multi-laboratory, multi- company collaboration for the development of a new Ethernet-based technology which ensures sub-nanosecond synchronisation and deterministic data transfer. The project uses an open source paradigm for the development of its hardware, gateware and software components. This article provides an introduction to the technical choices and an explanation of the basic principles underlying WR. It then describes some possible applications and the current status of the project. Finally, it provides insight on current developments and future plans.

  19. 'Snow White' in Color

    Science.gov (United States)

    2008-01-01

    This color image taken by the Surface Stereo Imager on NASA's Phoenix Mars Lander shows the trench dubbed 'Snow White,' after further digging on the 25th Martian day, or sol, of the mission (June 19, 2008). The lander's solar panel is casting a shadow over a portion of the trench. The trench is about 5 centimeters (2 inches) deep and 30 centimeters (12 inches) long. The Phoenix Mission is led by the University of Arizona, Tucson, on behalf of NASA. Project management of the mission is by NASA's Jet Propulsion Laboratory, Pasadena, Calif. Spacecraft development is by Lockheed Martin Space Systems, Denver.

  20. White dwarf dynamical interactions

    OpenAIRE

    Aznar Siguan, Gabriela

    2015-01-01

    Premi Extraordinari de Doctorat, promoció 2014-2015. Àmbit de Ciències Merging white dwarfs is a promising channel to trigger Type Ia supernovae, known as the double degenerate scenario. Supernovae are stellar explosions that radiate as much energy as any ordinary star is expected to emit over its entire life span, outshining briefly the whole hosting galaxy. They enrich the interstellar medium with higher mass elements and trigger the formation of new stars by the produced expanding shock...

  1. Growth of precommercially thinned loblolly pine 4 years following application of poultry litter

    Science.gov (United States)

    Scott D. Roberts; Alex L. Friend; Stephen H. Schoenholtz

    2006-01-01

    Application of poultry litter to southern pine stands represents a potentially attractive litter disposal option. Many pine stands are nutrient-limited and might respond positively to the added nutrients. However, the ability of pine stands to respond to nutrients contained in the litter, as well as contain the nutrients on site, has not been thoroughly investigated....

  2. Crown expansion following thinning in naturally regenerated and planted longleaf pine

    Science.gov (United States)

    Steven B. Jack; Noah A. Jansen; Robert J. Mitchell

    2015-01-01

    The recent focus on restoration of longleaf pine (Pinus palustris Mill.) forests has frequently led to planting longleaf pine on old-field and cutover sites. While many perceptions regarding response of longleaf pine to management are based upon measurements in naturally regenerated stands, it is generally observed that crown development in planted longleaf stands is...

  3. Species comparison of the physical properties of loblolly and slash pine wood and bark

    Science.gov (United States)

    Thomas L. Eberhardt; Joseph Dahlen; Laurence Schimleck

    2017-01-01

    Composition of the southern pine forest is now predominated by two species, loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.), owing to fire suppression activities, natural regeneration on abandoned agricultural lands, and extensive planting. Comparison of the wood and bark physical properties of these...

  4. Simulating the effects of the southern pine beetle on regional dynamics 60 years into the future

    Science.gov (United States)

    Jennifer K. Costanza; Jiri Hulcr; Frank H. Koch; Todd Earnhardt; Alexa J. McKerrow; Rob R. Dunn; Jaime A. Collazo

    2012-01-01

    We developed a spatially explicit model that simulated future southern pine beetle (Dendroctonus frontalis, SPB) dynamics and pine forest management for a real landscape over 60 years to inform regional forest management. The SPB has a considerable effect on forest dynamics in the Southeastern United States, especially in loblolly pine (...

  5. Introduction to the Red Pine SAF Region V Technical Conference, March 26-27, 2002

    Science.gov (United States)

    Thomas R. Crow

    2002-01-01

    Research on managing red pine has been ongoing for some time and management guides that incorporate information resulting from this research such as Buckman's (1962) Growth and Yield of Red Pine in Minnesota and Benzie's (1977) Manager's Handbook for Red Pine have been widely applied. Despite this extensive knowledge...

  6. Xylem monoterpenes of some hard pines of Western North America: three studies

    Science.gov (United States)

    Richard H. Smith

    1982-01-01

    Monoterpene composition was studied in a number of hard pine species and results were compared with earlier work. (1) Intratree measurements showed strong constancy of composition in both single-stemmed and forked trees of ponderosa, Jeffrey, Coulter, and Jeffrey x ponderosa pines. In grafts of these and other pines, the scion influenced the root stock, but not the...

  7. The role of cell membranes in the regulation of lignification in pine cells

    Science.gov (United States)

    Hendrix, D. L.

    1978-01-01

    The identity of pine cell membranes bearing PAL enzyme activity, the isolation of a plasma membrane preparation from pine cells for testing as a regulatory barrier in lignification, and the measurement of the geopotential effect in pine stems are presented. A model to describe and predict the interaction of gravity and lignification of higher plants was developed.

  8. A biologically-based individual tree model for managing the longleaf pine ecosystem

    Science.gov (United States)

    Rick Smith; Greg Somers

    1998-01-01

    Duration: 1995-present Objective: Develop a longleaf pine dynamics model and simulation system to define desirable ecosystem management practices in existing and future longleaf pine stands. Methods: Naturally-regenerated longleaf pine trees are being destructively sampled to measure their recent growth and dynamics. Soils and climate data will be combined with the...

  9. Mountain pine beetle population sampling: inferences from Lindgren pheromone traps and tree emergence cages

    Science.gov (United States)

    Barbara J. Bentz

    2006-01-01

    Lindgren pheromone traps baited with a mountain pine beetle (Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae, Scolytinae)) lure were deployed for three consecutive years in lodgepole pine stands in central Idaho. Mountain pine beetle emergence was also monitored each year using cages on infested trees. Distributions of beetles caught in...

  10. Do Red-cockaded Woodpeckers Select Cavity Trees Based on Chemical Composition of Pine Resin?

    Science.gov (United States)

    Richard N. Conner; Robert H. Johnson; D. Craig Rudolph; Daniel Saenz

    2003-01-01

    We examined resin chemistry of loblolly (Pinus taeda) and shortleaf (P. echinata) pines selected as cavity trees by Red-cockaded Woodpeckers (Picoides borealis) in eastern Texas. We sampled resin from (1) pines selected by Red-cockaded Woodpeckers that contained naturally excavated active cavities, (2) pines...

  11. A presettlement fire history in an oak-pine forest near Basin Lake, Algonquin Park, Ontario

    Science.gov (United States)

    Richard P. Guyette; Daniel C. Dey

    1995-01-01

    Fire scars from natural remnants of red pine (Pinus resinosa Ait.) in an oak-pine forest near Basin Lake, Algonquin Park, Ontario, were dated using dendrochronological methods. A fire scar chronology was constructed from 28 dated fire scars on 26 pine remnants found in a 1 km2 area of this forest. From pith and outside ring...

  12. Microsatellite DNA in genomic survey sequences and UniGenes of loblolly pine

    Science.gov (United States)

    Craig S Echt; Surya Saha; Dennis L Deemer; C Dana Nelson

    2011-01-01

    Genomic DNA sequence databases are a potential and growing resource for simple sequence repeat (SSR) marker development in loblolly pine (Pinus taeda L.). Loblolly pine also has many expressed sequence tags (ESTs) available for microsatellite (SSR) marker development. We compared loblolly pine SSR densities in genome survey sequences (GSSs) to those in non-redundant...

  13. Mapping pine mortality by aerial photography, Umstead State Park, North Carolina

    Science.gov (United States)

    Clarence J. DeMars; Garey W. Slaughter; Lnla E. Greene; John H. Ghent

    1982-01-01

    In 1975-1976, pine trees killed by the southern pine beetle Dendroctonus frontalis Zimm.) in a 2l70-hectare (5362-acre) area at the William B. Umstead State Park in central North Carolina, were monitored by sequential color infrared aerial photography. From 1973 through summer 1975, beetles in 350 infestation spots killed more than 20,500 pines on...

  14. Genetic conservation and management of the Californian endemic, Torrey Pine (Pinus torreyana Parry)

    Science.gov (United States)

    Jill A. Hamilton; Jessica W. Wright; F. Thomas. Ledig

    2017-01-01

    Torrey pine (Pinus torreyana) is one of the rarest pine species in the world. Restricted to one mainland and one island population in California, Torrey pine is a species of conservation concern under threat due to low population sizes, lack of genetic variation, and environmental stochasticity. Previous research points to a lack of within population variation that is...

  15. Influence of elevation on bark beetle community structure in ponderosa pine stands of northern Arizona

    Science.gov (United States)

    Andrew Miller; Kelly Barton; Joel McMillin; Tom DeGomez; Karen Clancy; John Anhold

    2008-01-01

    (Please note, this is an abstract only) Bark beetles killed more than 20 million ponderosa pine trees in Arizona during 2002-2004. Historically, bark beetle populations remained endemic and ponderosa pine mortality was limited to localized areas in Arizona. Consequently, there is a lack of information on bark beetle community structure in ponderosa pine stands of...

  16. The concept: Restoring ecological structure and process in ponderosa pine forests

    Science.gov (United States)

    Stephen F. Arno

    1996-01-01

    Elimination of the historic pattern of frequent low-intensity fires in ponderosa pine and pine-mixed conifer forests has resulted in major ecological disruptions. Prior to 1900, open stands of large, long-lived, fire-resistant ponderosa pine were typical. These were accompanied in some areas by other fire-dependent species such as western larch. Today, as a result of...

  17. Growth-differentiation balance: a basis for understanding southern pine beetle - tree interactions

    Science.gov (United States)

    Peter L. Lorio

    1986-01-01

    Interrelationships between the southern pine beetle (SPB), Dendroctonus frontalis Zimm.) and its host pines are explained in terms of the growth-differentiation balance concept.A general hypothesis is proposed based on growth-differentiation balance in southern pines (radial growth of stems versus synthesis and yield of oleoresin) and seasonal activity of the SPB based...

  18. The historical ecology of fire, climate, and the decline of shortleaf pine in the Missouri Ozarks

    Science.gov (United States)

    Richard P. Guyette; Rose-Marie Muzika; Stephen L. Voelker

    2007-01-01

    We review studies that have shown reductions in the abundance of shortleaf pine (Pinus echinata Mill.) during the last century in the Ozark Highlands. These studies indicate that pine abundance is currently 15 to 53 percent of the pine abundance levels before major logging activity and fire suppression, activities dating from the mid- to late 19th...

  19. The state of mixed shortleaf pine-upland oak management in Missouri

    Science.gov (United States)

    Elizabeth M. Blizzard; David R. Larsen; Daniel C. Dey; John M. Kabrick; David Gwaze

    2007-01-01

    Mixed shortleaf pine-upland oak stands allow flexibility in type and timing of regeneration, release, and harvesting treatments for managers; provide unique wildlife and herbaceous community niches; and increase visual diversity. Most of the research to date focused on growing pure pine or oak stands, with little research on today's need to grow pine-oak mixtures...

  20. Southern pine beetles in central hardwood forests: frequency, spatial extent, and changes to forest structure

    Science.gov (United States)

    John Nowak; Kier Klepzig; D R Coyle; William Carothers; Kamal J K Gandhi

    2015-01-01

    EXCERPT FROM: Natural Disturbances and Historic Range Variation 2015. The southern pine beetle (SPB) is a major disturbance in pine forests throughout the range of southern yellow pines, and is a significant influence on forests throughout several Central Hardwood Region (CHR) ecoregions...

  1. Estimates of genetic parameters for oleoresin and growth traits in juvenile loblolly pine

    Science.gov (United States)

    James H. Roberds; Brian L. Strom; Fred P. Hain; David P. Gwaze; Steven E. McKeand; Larry H. Lott

    2003-01-01

    In southern pines of the United States, resistance to attack by southern pine beetle, Dendroctonus frontalis Zimmermann, is believed to principally involve flow of oleoresin to beetle attack sites. Both environmental and genetic factors are known to affect the quantity of oleoresin flow in loblolly pine, Pinus taeda L., but little...

  2. Growth of longleaf and loblolly pine planted on South Carolina Sandhill sites.

    Energy Technology Data Exchange (ETDEWEB)

    Cram, Michelle, M.; Outcalt, Kenneth, W.; Zarnoch, Stanley, J.

    2010-07-01

    Performance of longleaf (Pinus palustris Mill.) and loblolly pine (P. taeda L.) were compared 15–19 years after outplanting on 10 different sites in the sandhillsof South Carolina. The study was established from 1988 to 1992 with bareroot seedlings artificially inoculated with Pisolithus tinctorius (Pt) or naturally inoculated with mycorrhizae in the nursery. A containerized longleaf pine treatment with and without Pt inoculation was added to two sites in 1992. Effects of the Pt nursery treatment were mixed, with a decrease in survival of bareroot longleaf pine on two sites and an increase in survival on another site. The containerized longleaf pine treatment substantially increased survival, which led to greater volume compared with bareroot longleaf pine. Loblolly pine yielded more volume than longleaf pine on all sites but one, where survival was negatively affected by fire. Depth of sandy surface horizon affected mean annual height growth of both loblolly and longleaf pine. Height growth per year decreased with an increase in sand depth for both species. Multiple regression analysis of volume growth(ft3/ac per year) for both species indicated a strong relationship to depth of sandy soil and survival. After 15–19 years, loblolly pine has been more productive than longleaf pine, although longleaf pine productivity may be equal to or greater than that of loblolly pine on the soils with the deepest sandy surface layers over longer rotations.

  3. 78 FR 33966 - Establishment of Class E Airspace; Pine Island, FL

    Science.gov (United States)

    2013-06-06

    ... Federal Aviation Administration 14 CFR Part 71 Establishment of Class E Airspace; Pine Island, FL AGENCY... Airspace at Pine Island, FL, to accommodate a new Area Navigation (RNAV) Global Positioning System (GPS) special Standard Instrument Approach Procedure (SIAP) serving Pine Island Heliport. This action enhances...

  4. Longleaf pine (Pinus palustris ) Stand Dynamics: A Regional Longleaf Growth Study

    Science.gov (United States)

    Ralph S. Meldahl; John S. Kush; William D. Boyer

    1998-01-01

    Objective: Describe and model temporal changes in longleaf pine stand structure. From 1964-1967, the U.S. Forest Service established a regional longleaf pine growth study (RLGS) in the Gulf States. The original objective was to obtain a database for the development of growth and mortality predictions of naturally regenerated, even- aged longleaf pine stands. The...

  5. Laccase modification of the physical properties of bark and pulp of loblolly pine and spruce pulp

    Science.gov (United States)

    William Kenealy; John Klungness; Mandla Tshabalala; Eric Horn; Masood Akhtar; Roland Gleisner; Gisela Buschle-Diller

    2004-01-01

    Pine bark, pine pulp, and spruce pulp were reacted with laccase in the presence of phenolic laccase substrates to modify the fiber surface properties. The acid-base and dispersive characteristics of these modified steam-treated thermomechanical loblolly pine pulps were determined by inverse gas chromatography. Different combinations of substrates with laccase modified...

  6. Development of sampling methods for the slash pine flower thrips Gnophothrips fuscus (Morgan), (Thysanoptera: Phlaeothripidae)

    Science.gov (United States)

    Carl W. Fatzinger; Wayne N. Dixen

    1991-01-01

    Slash pine flower thrips typically destroy about 24% of the flowers (cones) present in slash pine seed orchards. The seasonal distribution and abundance of slash pine flower thrips are being investigated and methods for sampling field populations of the insect are being evaluated for potential use in integrated pest management strategies. The efficacies of several...

  7. Longleaf and loblolly pine seedlings respond differently to soil compaction, water content, and fertilization

    Science.gov (United States)

    D. Andrew Scott; James A. Burger

    2014-01-01

    Aims Longleaf pine (Pinus palustris Mill.) is being restored across the U.S. South for a multitude of ecological and economic reasons, but our understanding of longleaf pine’s response to soil physical conditions is poor. On the contrary, our understanding of loblolly pine (Pinus taeda L.) root and...

  8. Phylogeographic analyses and evaluation of shortleaf pine population structure in Missouri

    Science.gov (United States)

    Jeff Koppelman; Emily Parsons; Briedi Scott; Jennifer Collantes; Lori S. Eggert; Sedley Josserand; Craig Echt; C. Dana Nelson

    2007-01-01

    A great expanse of shortleaf pine in Missouri was logged before the mid-20th century, and since that time, seedlings of the species have been planted. Due to large-scale decline in oak trees occupying previous shortleaf pine range, restoration of the shortleaf pine is a priority in Missouri. Restoration can be enhanced through the use of locally adapted trees that have...

  9. Red-cockaded woodpecker nestling provisioning and reproduction in two different pine habitats

    Science.gov (United States)

    Richard R. Schaefer; Richard N. Conner; D. Craig Rudolph; Daniel Saenz

    2004-01-01

    We obtained nestling provisioning and rcpntductive data from 24 Red-cockaded Woodpecker (Picoides borealis) groups occupying two different pine habitats-longleaf pine (Pinus palustris) and a mixture of loblolly (P. taeda) and shortleaf pine (P. echinata)--in eastern Texas during 1990 and 1901....

  10. The red-cockaded woodpecker cavity tree: A very special pine

    Science.gov (United States)

    Richard N. Conner; D. Craig Rudolph; Daniel Saenz; Robert H. Johnson

    2004-01-01

    The adaptation of red-cockaded woodpeckers (Picoides borealis) to fire-maintained southern pine ecosystems has included the development of behaviors that permit the species to use living pines for their cavity trees. Their adaptation to pine ecosystems has also involved a major adjustment in the species' breeding system to cooperative breeding,...

  11. Altered species interactions and implications for natural regeneration in whitebark pine communities

    Science.gov (United States)

    Shawn T. McKinney; Diana F. Tomback; Carl E. Fiedler

    2011-01-01

    Whitebark pine (Pinus albicaulis) decline has altered trophic interactions and led to changes in community dynamics in many Rocky Mountain subalpine forests (McKinney and Tomback 2007). Here we discuss how altered species interactions, driven by disproportionate whitebark pine mortality, constrain the capability of whitebark pine forests to contribute genetic material...

  12. Carbon Sequestration in loblolly pine plantations: Methods, limitations, and research needs for estimating storage pools

    Science.gov (United States)

    Kurt Johnsen; Bob Teskey; Lisa Samuelson; John Butnor; David Sampson; Felipe Sanchez; Chris Maier; Steve McKeand

    2004-01-01

    Globally, the species most widely used for plantation forestry is loblolly pine (Pinus taeda L.). Because loblolly pine plantations are so extensive and grow so rapidly, they provide a great potential for sequestering atmospheric carbon (C). Because loblolly pine plantations are relatively simple ecosystems and because such a great volume of...

  13. Interception loss, throughfall and stemflow chemistry in pine and oak forests in northeastern Mexico.

    Science.gov (United States)

    Cantú Silva, I; González Rodríguez, H

    2001-08-01

    Interception loss, gross precipitation, throughfall and stemflow solution chemistry beneath pine (Pinus pseudostrobus Lindl.), oak (Quercus sp.) and pine-oak natural forest canopies in northeastern Mexico were measured. Coefficients of variation for throughfall were 12% in pine and oak canopies and 17% in the mixed pine-oak canopy. The variability of stemflow averaged 66, 126 and 73% for pine, oak and the mixed pine-oak canopies, respectively. Linear regression analysis of net versus gross precipitation for the three canopies showed highly significant correlations (r = 0.974-0.984). Total precipitation during the experimental period was 974 mm and estimated interception loss was 19.2, 13.6 and 23% for the pine, oak and pine-oak canopies, respectively. Stemflow did not occur following rainfall events of less than 4 mm and, in all canopies, stemflow represented a minimal proportion of gross precipitation (0.60, 0.50 and 0.03% for pine, oak and pine-oak, respectively). Throughfall pH in pine (6.2), oak (6.3) and pine-oak (6.3) canopies was significantly more acidic than gross precipitation (6.6). Stemflow pH ranged from 3.7 (pine) to 6.0 (oak). The pine-oak canopy registered the highest throughfall and stemflow electrical conductivities, 104 and 188 microS cm(-1), respectively. Net nutrient leaching of K, Mg, Na, Fe, Mn and Zn was significantly higher from the pine-oak canopy than from the pure pine and oak canopies. Mean depositions of Ca and Cu in throughfall behaved similarly among the three types of canopies. A greater proportion of Zn in gross precipitation was absorbed by the oak canopy than by the pine and pine-oak canopies. Enrichment factors beneath the pine-oak canopy relative to gross precipitation varied from 1.2 to 3.2 for macro-nutrients (Ca, K, Mg and Na) and from 1.4 to 3.1 for micro-nutrients (Cu, Fe, Mn and Zn). Stemflow depositions of Ca, K, Mg and Cu were higher in the pine-oak canopy, whereas stemflow depositions of Na, Fe, Mn and Zn were higher

  14. Identification of steroleosin in oil bodies of pine megagametophytes.

    Science.gov (United States)

    Pasaribu, Buntora; Chung, Tse-Yu; Chen, Chii-Shiarng; Jiang, Pei-Luen; Tzen, Jason T C

    2016-04-01

    Three classes of integral proteins termed oleosin, caleosin and steroleosin have been identified in seed oil bodies of diverse angiosperm species. Recently, two oleosin isoforms and one caleosin were identified in megagametophyte oil bodies of pine (Pinus massoniana), a representative gymnosperm species. In this study, a putative steroleosin of approximately 41 kDa was observed in isolated oil bodies of pine megagametophytes, and its corresponding cDNA fragment was obtained by PCR cloning and further confirmed by mass spectrometric analysis. Phylogenetic tree analysis showed that pine steroleosin was evolutionarily more closely-related to steroleosin-B than steroleosin-A found in angiosperm seed oil bodies. As expected, artificial oil bodies constituted with recombinant steroleosin over-expressed in Escherichia coli were less stable and larger than native pine oil bodies. Filipin staining of artificial oil bodies sheltered by recombinant steroleosin with or without its sterol binding domain showed that the sterol binding domain was responsible for the sterol binding capability of steroleosin. Sterol-coupling dehydrogenase activity was demonstrated in artificial oil bodies constituted with recombinant steroleosin as well as in purified pine oil bodies. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  15. Assessment of imperfect detection of blister rust in whitebark pine within the Greater Yellowstone Ecosystem

    Science.gov (United States)

    Wright, Wilson J.; Irvine, Kathryn M.

    2017-01-01

    We examined data on white pine blister rust (blister rust) collected during the monitoring of whitebark pine trees in the Greater Yellowstone Ecosystem (from 2004-2015). Summaries of repeat observations performed by multiple independent observers are reviewed and discussed. These summaries show variability among observers and the potential for errors being made in blister rust status. Based on this assessment, we utilized occupancy models to analyze blister rust prevalence while explicitly accounting for imperfect detection. Available covariates were used to model both the probability of a tree being infected with blister rust and the probability of an observer detecting the infection. The fitted model provided strong evidence that the probability of blister rust infection increases as tree diameter increases and decreases as site elevation increases. Most importantly, we found evidence of heterogeneity in detection probabilities related to tree size and average slope of a transect. These results suggested that detecting the presence of blister rust was more difficult in larger trees. Also, there was evidence that blister rust was easier to detect on transects located on steeper slopes. Our model accounted for potential impacts of observer experience on blister rust detection probabilities and also showed moderate variability among the different observers in their ability to detect blister rust. Based on these model results, we suggest that multiple observer sampling continue in future field seasons in order to allow blister rust prevalence estimates to be corrected for imperfect detection. We suggest that the multiple observer effort be spread out across many transects (instead of concentrated at a few each field season) while retaining the overall proportion of trees with multiple observers around 5-20%. Estimates of prevalence are confounded with detection unless it is explicitly accounted for in an analysis and we demonstrate how an occupancy model can be used

  16. Nesting success of birds in different silvicultural treatments in southeastern U.S. Pine Forests

    Science.gov (United States)

    Barber, D.R.; Martin, T.E.; Melchiors, M.A.; Thill, R.E.; Wigley, T.B.

    2001-01-01

    We examined nesting success and levels of nest predation and cowbird parasitism among five different silvicultural treatments: regenerating (3-6 years old), mid-rotation (12-15 years old), and thinned (17-23 years old) pine plantations, single-tree selection, and late-rotation pine-hardwood stands in the Ouachita Mountains of Arkansas from 1993 to 1995. We monitored 1674 nests. Differences in daily mortality and daily predation rate among two or more treatments were found for 4 and 3 of 12 species, respectively. These differences were lost following Bonferroni adjustments, but thinned stands had higher levels of predation than single-tree selection stands when predation levels were averaged across species. Daily predation rates were positively correlated with the relative abundance of birds, suggesting that nest predators respond to prey availability (i.e., nests) in a density-dependent manner. The relative abundance of cowbirds differed among treatments, with the highest densities in regenerating, thinned, and single-tree selection stands. Field Sparrows (Spizella pusilla) and Yellow-breasted Chats (Icteria virens) experienced higher levels of parasitism in thinned than regenerating plantations, whereas White-eyed Vireos (Vireo griseus) experienced higher parasitism in regenerating plantations than in mid-rotation or thinned plantations. Several shrub-nesting and 1 ground-nesting species had lower nesting success in thinned and regenerating plantations than has been reported in previously published studies. Thus, some seral stages of even-aged management may provide low-quality nesting habitat for several early-successional bird species. In contrast, many species nesting in mid-rotation and single-tree selection stands had nesting success similar to or greater than that found in previous studies, suggesting that some silvicultural treatments, when embedded in a largely forested landscape, may provide suitable habitat for forest land birds without affecting their

  17. The White House saga

    Directory of Open Access Journals (Sweden)

    Daković Nevena

    2015-01-01

    Full Text Available Frank Capra expressed his gratitude to the immigrant dream come true by creating a brilliant cinematic myth about the American political system, presenting it as an 'inherently good' when in the hands of honest and good people. His 'morality fairytales', 'fantasies of good will' imbued with belief in restoration of old-new principles, offer complex reflections on an idealised Americanism of the 1930s which have become the foundation of representations of the American political system. The Capraesque narrative - 'a blend of optimism, humor, patriotism, and, to those who really understand his work, (and darkness, despair, and the need to fight for things you care about...' (Bassinger 1982: 48 - as a combination of all-American values, ordinary people and historical figures, a democracy myth - has been extended by an endless network of intertextual echoes in film and TV production. Following the developmental lines - through political melodrama, melodramatic politics and political soap opera - one will be led from Capra to the series The West Wing (1996 - 2006, House of Cards (2013 - 2015 and Madame Secretary (2014 - ; from the comprehensive Washington Postcard (Mr. Smith Goes to Washington, 1939 to the focal points at the White House; from Capra's comedy to the saga of the fight against terrorism led by the president and both ordinary and trained American citizens (White House Down, 2013, Roland Emmerich.

  18. 76 FR 13968 - Notice of Request for Extension of Approval of an Information Collection; Pine Shoot Beetle; Host...

    Science.gov (United States)

    2011-03-15

    ... Approval of an Information Collection; Pine Shoot Beetle; Host Material From Canada AGENCY: Animal and... information on regulations for the importation of pine nursery stock and various pine products from Canada..., at (301) 851-2908. SUPPLEMENTARY INFORMATION: Title: Pine Shoot Beetle; Host Material from Canada...

  19. Susceptibility of parent and interspecific Fl hybrid pine trees to tip moth damage in a coastal North Carolina planting

    Science.gov (United States)

    Maxine T. Highsmith; John Frampton; David 0' Malley; James Richmond; Martesa Webb

    2001-01-01

    Tip moth damage arnong families of parent pine species and their interspecific F1 hybrids was quantitatively assessed in a coastal planting in North Carolina. Three slash pine (Pinus elliotti var. elliotti Engelm.), two loblolly pine (Pinus taeda L.), and four interspecific F1 hybrid pine families were used. The...

  20. Hibernacula and summer den sites of pine snakes (Pituophis melanoleucus) in the New Jersey pine barrens

    Science.gov (United States)

    Burger, J.; Zappalorti, R.T.; Gochfeld, M.; Boarman, W.I.; Caffrey, M.; Doig, V.; Garber, S.D.; Lauro, B.; Mikovsky, M.; Safina, C.; Saliva, Jorge

    1988-01-01

    We examined eight summer dens (used only in summer) and seven hibernacula (occupied both in winter and summer) of the snake Pituophis melanoleucus in the New Jersey Pine Barrens, comparing above ground characteristics of hibernacula and summer dens with characteristics at nearby random points. Temperatures at the soil surface and at 10 cm depth were significantly warmer, and there was less leaf cover around the random points compared to the entrances of the hibernacula and summer dens. Hibernacula had significantly more vegetation cover within 5 m, more leaf cover over the burrow entrance, and were closer to trees than were summer dens. Most hibernacula and summer dens were beside old fallen logs (73%), the entrance tunnels following decaying roots into the soil. Excavation of the hibernacula and summer dens indicated that most hibernacula appeared to be dug by the snakes and had an average of eight side chambers and 642 cm of tunnels, compared to less than one side chamber and 122 cm of tunnels for summer dens. Except for hatchlings, most snakes in hibernacula were located in individual chambers off the main tunnel; all snakes were at depths of 50-111 cm (X̄ = 79 cm). Pine snakes may select optimum hibernation sites which reduce winter mortality.

  1. Disposal of chemical agents and munitions stored at Pine Bluff Arsenal, Pine Bluff, Arkansas

    Energy Technology Data Exchange (ETDEWEB)

    Ensminger, J.T.; Hillsman, E.L.; Johnson, R.D.; Morrisey, J.A.; Staub, W.P.; Boston, C.R.; Hunsaker, D.B.; Leibsch, E.; Rickert, L.W.; Tolbert, V.R.; Zimmerman, G.P.

    1991-09-01

    The Pine Bluff Arsenal (PBA) near Pine Bluff, Arkansas, is one of eight continental United States (CONUS) Army installations where lethal unitary chemical agents and munitions are stored and where destruction of agents and munitions is proposed under the Chemical Stockpile Disposal Program (CSDP). The chemical agent inventory at PBA consists of approximately 12%, by weight, of the total US stockpile. The destruction of the stockpile is necessary to eliminate the risk to the public from continued storage and to dispose of obsolete and leaking munitions. In 1988 the US Army issued a Final Programmatic Environmental Impact Statement (FPEIS) for the CSDP that identified on-site disposal of agents and munitions as the environmentally preferred alternative (i.e., the alternative with the least potential to cause significant adverse impacts). The purpose of this report is to examine the proposed implementation of on-site disposal at PBA in light of more recent and more detailed data than those on which the FPEIS is based. New population data were used to compute fatalities using the same computation methods and values for all other parameters as in the FPEIS. Results indicate that all alternatives are indistinguishable when the potential health impacts to the PBA community are considered. However, risks from on-site disposal are in all cases equal to or less than risks from other alternatives. Furthermore, no unique resources with the potential to prevent or delay implementation of on-site disposal at PBA have been identified.

  2. Annual cycle of Scots pine photosynthesis

    Directory of Open Access Journals (Sweden)

    P. Hari

    2017-12-01

    Full Text Available Photosynthesis, i.e. the assimilation of atmospheric carbon to organic molecules with the help of solar energy, is a fundamental and well-understood process. Here, we connect theoretically the fundamental concepts affecting C3 photosynthesis with the main environmental drivers (ambient temperature and solar light intensity, using six axioms based on physiological and physical knowledge, and yield straightforward and simple mathematical equations. The light and carbon reactions in photosynthesis are based on the coherent operation of the photosynthetic machinery, which is formed of a complicated chain of enzymes, membrane pumps and pigments. A powerful biochemical regulation system has emerged through evolution to match photosynthesis with the annual cycle of solar light and temperature. The action of the biochemical regulation system generates the annual cycle of photosynthesis and emergent properties, the state of the photosynthetic machinery and the efficiency of photosynthesis. The state and the efficiency of the photosynthetic machinery is dynamically changing due to biosynthesis and decomposition of the molecules. The mathematical analysis of the system, defined by the very fundamental concepts and axioms, resulted in exact predictions of the behaviour of daily and annual patterns in photosynthesis. We tested the predictions with extensive field measurements of Scots pine (Pinus sylvestris L. photosynthesis on a branch scale in northern Finland. Our theory gained strong support through rigorous testing.

  3. Annual cycle of Scots pine photosynthesis

    Science.gov (United States)

    Hari, Pertti; Kerminen, Veli-Matti; Kulmala, Liisa; Kulmala, Markku; Noe, Steffen; Petäjä, Tuukka; Vanhatalo, Anni; Bäck, Jaana

    2017-12-01

    Photosynthesis, i.e. the assimilation of atmospheric carbon to organic molecules with the help of solar energy, is a fundamental and well-understood process. Here, we connect theoretically the fundamental concepts affecting C3 photosynthesis with the main environmental drivers (ambient temperature and solar light intensity), using six axioms based on physiological and physical knowledge, and yield straightforward and simple mathematical equations. The light and carbon reactions in photosynthesis are based on the coherent operation of the photosynthetic machinery, which is formed of a complicated chain of enzymes, membrane pumps and pigments. A powerful biochemical regulation system has emerged through evolution to match photosynthesis with the annual cycle of solar light and temperature. The action of the biochemical regulation system generates the annual cycle of photosynthesis and emergent properties, the state of the photosynthetic machinery and the efficiency of photosynthesis. The state and the efficiency of the photosynthetic machinery is dynamically changing due to biosynthesis and decomposition of the molecules. The mathematical analysis of the system, defined by the very fundamental concepts and axioms, resulted in exact predictions of the behaviour of daily and annual patterns in photosynthesis. We tested the predictions with extensive field measurements of Scots pine (Pinus sylvestris L.) photosynthesis on a branch scale in northern Finland. Our theory gained strong support through rigorous testing.

  4. Efficacy of two systemic insecticides injected into loblolly pine for protection against southern pine bark beetles (Coleoptera: Curculionidae).

    Science.gov (United States)

    Grosman, Donald M; Clarke, Stephen R; Upton, William W

    2009-06-01

    We evaluated the efficacy of systemic insecticides emamectin benzoate and fipronil for preventing mortality of individual loblolly pines, Pinus taeda L., as a result of attacks by southern pine bark beetles (Coleoptera: Curculionidae, Scolytinae) for two consecutive years in Mississippi (2005-2006) and Alabama (2006-2007). Trees were injected once in the spring of 2005 (Mississippi) or 2006 (Alabama) and then were baited with species-specific bark beetle lures several weeks later. The southern pine beetle, Dendroctonus frontalis Zimmermann, was the target species but was changed to Ips spp. in Mississippi (but not Alabama) the second year because of few southern pine beetle attacks on baited trees. Single injections of emamectin benzoate were effective in reducing tree mortality caused by bark beetles compared with untreated checks. Although less effective overall, fipronil also significantly reduced tree mortality from southern pine beetle compared with the checks during the second year in Alabama. Tree mortality continued well after the lures had been removed. Evaluations of bolts taken from experimental trees killed in 2006 indicated that emamectin benzoate effectively prevented parent bark beetle gallery construction and that fipronil significantly reduced lengths of galleries constructed by adult beetles, brood development, and emergence, compared with checks. In contrast, neither insecticide treatment prevented the bark beetles from inoculating blue stain fungi, Ophiostoma spp., into treated trees.

  5. Using pheromones to protect heat-injured lodgepole pine from mountain pine beetle infestation. Forest Service research note

    Energy Technology Data Exchange (ETDEWEB)

    Amman, G.D.; Ryan, K.C.

    1994-01-01

    The bark beetle antiaggregative pheromones, verbenone and ipsdienol, were tested in protecting heat-injured lodgepole pine (Pinus contorta Dougl. ex Loud.) from mountain pine beetle (Dendroctonus ponderosae) infestation in the Sawtooth National Recreation Area in central Idaho. Peat moss was placed around 70 percent of the basal circumference of lodgepole pines. When the peat moss was ignited, it simulated the smoldering of natural duff, generating temperatures that killed the cambium. The four treatments tested were uninjured tree, heat-injured tree, heat-injured tree treated with verbenone, and heat-injured tree treated with verbenone plus ipsdienol. Treatments were replicated 20 times. Mountain pine beetles were attracted into treatment blocks by placing mountain pine beetle tree baits on metal posts 3 to 5 meters from treated trees. Fisher's Extract Test showed that treatment and beetle infestation were not independent (P < 0.015). Check treatments contained more unattacked and mass-attacked trees, whereas pheromone treatments contained more unsuccessfully attacked trees.

  6. Pine wood decomposition ability of different Phlebiopsis gigantea isolates

    Directory of Open Access Journals (Sweden)

    Piotr Łakomy

    2014-08-01

    Full Text Available The ability of Phlebiopsis gigantea isolates, derived from different parts of Europe, to decompose pine wood was investigated. This ability was expressed by the loss of dry weight of pine wood blocks. Pine wood decay caused by the isolates of Ph. gigantea was similar. In addition there were no significant differences the decomposition ability at all the isolates, which were displayed as the loss of dry weight of wood. When the wood decay ability of two isolates were compared there were significant differences only between the less and the most effective isolates. This might be attributed to the low genetic variation among European population of this fungus. The isolates used in Finland and Poland as biopreparation were the most effective.

  7. ILC Higgs White Paper

    CERN Document Server

    Asner, D.M.; Calancha, C.; Fujii, K.; Graf, N.; Haber, H.E.; Ishikawa, A.; Kanemura, S.; Kawada, S.; Kurata, M.; Miyamoto, A.; Neal, H.; Ono, H.; Potter, C.; Strube, J.; Suehara, T.; Tanabe, T.; Tian, J.; Tsumura, J.; Watanuki, S.; Weiglein, G.; Yagyu, K.; Yokoya, H.

    2013-01-01

    The ILC Higgs White Paper is a review of Higgs Boson theory and experiment at the International Linear Collider (ILC). Theory topics include the Standard Model Higgs, the two-Higgs doublet model, alternative approaches to electroweak symmetry breaking, and precision goals for Higgs boson experiments. Experimental topics include the measurement of the Higgs cross section times branching ratio for various Higgs decay modes at ILC center of mass energies of 250, 500, and 1000 GeV, and the extraction of Higgs couplings and the total Higgs width from these measurements. Luminosity scenarios based on the ILC TDR machine design are used throughout. The gamma-gamma collider option at the ILC is also discussed.

  8. White Religious Educators Resisting White Fragility: Lessons from Mystics

    Science.gov (United States)

    Hess, Mary E.

    2017-01-01

    Decades of work in dismantling racism have not yielded the kind of results for which religious educators have hoped. One primary reason has been what scholars term "white fragility," a symptom of the structural racism which confers systemic privilege upon White people. Lessons learned from Christian mystics point to powerful ways to…

  9. 50 CFR 660.373 - Pacific whiting (whiting) fishery management.

    Science.gov (United States)

    2010-10-01

    ... whiting caught shoreward of 100-fm (183-m) in the Eureka, CA area.The “per trip” limit for other.../Groundfish-Fishery-Management/Whiting-Management/index.cfm), phone, fax, letter, press release, and/or USCG... fm (183 m) depth contour. Latitude and longitude coordinates defining the boundary line approximating...

  10. The Achievement Gap between White and Non-White Students

    Science.gov (United States)

    Rojas-LeBouef, Ana; Slate, John R.

    2012-01-01

    This Collection contains three seminal modules by Authors Ana Rojas-LeBouef and John R. Slate, professors and researchers from Sam Houston State University in Texas. They are nationally recognized scholars in the area of the academic inequity between White and Non-White students. This paper is divided into three chapters. Chapter 1--The…

  11. Multiple Pathways to Whiteness: White Teachers' Unsteady Racial Identities

    Science.gov (United States)

    Miller, Erin T.

    2017-01-01

    Teacher education programs in the US, recognizing the mismatch that exists in preschool provision between mostly white teachers and a very diverse intake of young children, have begun to explore ways of raising racial awareness among pre-service teachers, with the aim of improving non-white children's classroom experiences and outcomes. This paper…

  12. Silvicultural guide for northern white-cedar (eastern white cedar)

    Science.gov (United States)

    Emmanuelle Boulfroy; Eric Forget; Philip V. Hofmeyer; Laura S. Kenefic; Catherine Larouche; Guy Lessard; Jean-Martin Lussier; Fred Pinto; Jean-Claude Ruel; Aaron. Weiskittel

    2012-01-01

    Northern white-cedar (eastern white cedar; Thuja occidentalis L.) is an important tree species in the northeastern United States and adjacent Canada, occurring both in pure stands and as a minor species in mixed stands of hardwoods or other softwoods. Yet practitioners have little and often contradictory information about cedar ecology and...

  13. Interpopulation genetic-ecological variation of Scots pine (Pinus sylvestris L. in Serbia

    Directory of Open Access Journals (Sweden)

    Lučić Aleksandar

    2011-01-01

    Full Text Available The genetic-ecological variation of Scots pine (Pinus sylvestris L. in Serbia was studied in the populations at five localities in western and south-western Serbia. Three groups of Scots pine (Pinus sylvestris L. populations were differentiated based on genetic research (seed protein analysis and plant community research. The first group consists of Scots pine populations on Šargan (FMU “Šargan“ and on Tara (FMU “Kaluderske Bare”, where the forests belong to the community of Scots pine and Austrian pine (Pinetum sylvestris-nigrae Pavlovic 1951. The second group covers the localities Stolovi (FMU “Radocelo-Crepuljnik“ and Zlatar (FMU “Zlatar I“, where the forests belong to the community of Scots pine and spruce (Piceo abietis-Pinetum sylvestris Stefanovic 1960. The third group comprises the Scots pine population on Pešter (FMU “Dubocica-Bare“ which belongs to the community of Scots pine with erica (Erico-Pinetum sylvestris Stefanovic 1963. Cluster analysis was performed on the basis of seed protein data and showed that there are three groups of Scots pine populations. The three populations coincide with plant communities. The community of Scots pine with erica (Erico-Pinetum sylvestris Stefanovic 1963 recorded on Pešter at the locality “Dubocica- Bare“ in the area of FE “Golija“ Ivanjica, is a special Scots pine population displayed at the greatest distance from all other populations in the cluster analysis dendrogram.

  14. The Experience of Introducing the Species of Pine (Pinus in the Lower Volga Region

    Directory of Open Access Journals (Sweden)

    Kruchkov S.N.

    2015-10-01

    Full Text Available When growing pine plantations in the desert in recent years using a variety of introduced species of pine (Crimea, yellow, Banks which are insufficiently studied in these conditions and require studies of their adaptive capacity. The article is the result of research conducted by the authors in 2004-2015. The collection, analysis of experimental materials, and field experiments were carried out. The article summarizes the authors’ long-term research on the introduction of different types of pines. They generalized the data on growth, conditions, reproductive capacity of pine species (Pinus in natural and artificial plantations for protective afforestation in arid conditions of the Lower Volga region. The experience in breeding pine in the desert proves the prospects of using natural selection to create sustainable biogeocenosis with a wide genetic diversity. A comparative study of pines introduced under the desert conditions is a perspective Crimean pines and yellow, not inferior to the growth of Scotch pine. According to the research, the article reveals the benefits of the Crimean and yellow pines of Scots pine on a number of factors: drought tolerance, resistance to diseases and pests. Consequently, these pine trees are to be used for afforestation in the harsh conditions of the desert.

  15. The relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis)

    Science.gov (United States)

    Jules, Erik S; Jackson, Jenell I.; van Mantgem, Phillip J.; Beck, Jennifer S.; Murray, Michael P.; Sahara, E. April

    2016-01-01

    Pathogens and insect pests have become increasingly important drivers of tree mortality in forested ecosystems. Unfortunately, understanding the relative contributions of multiple mortality agents to the population decline of trees is difficult, because it requires frequent measures of tree survival, growth, and recruitment, as well as the incidence of mortality agents. We present a population model of whitebark pine (Pinus albicaulis), a high-elevation tree undergoing rapid decline in western North America. The loss of whitebark pine is thought to be primarily due to an invasive pathogen (white pine blister rust; Cronartium ribicola) and a native insect (mountain pine beetle; Dendroctonus ponderosae). We utilized seven plots in Crater Lake National Park (Oregon, USA) where 1220 trees were surveyed for health and the presence of blister rust and beetle activity annually from 2003–2014, except 2008. We constructed size-based projection matrices for nine years and calculated the deterministic growth rate (λ) using an average matrix and the stochastic growth rate (λs) by simulation for whitebark pine in our study population. We then assessed the roles of blister rust and beetles by calculating λ and λsusing matrices in which we removed trees with blister rust and, separately, trees with beetles. We also conducted life-table response experiments (LTRE) to determine which demographic changes contributed most to differences in λ between ambient conditions and the two other scenarios. The model suggests that whitebark pine in our plots are currently declining 1.1% per year (λ = 0.9888, λs = 0.9899). Removing blister rust from the models resulted in almost no increase in growth (λ = 0.9916, λs = 0.9930), while removing beetles resulted in a larger increase in growth (λ = 1.0028, λs = 1.0045). The LTRE demonstrated that reductions in stasis of the three largest size classes due to beetles contributed most to the smaller λ in the ambient condition

  16. Characteristics of substrates used for nursery production of Austrian pine and Scots pine

    Directory of Open Access Journals (Sweden)

    Vratuša Vesna

    2002-01-01

    Full Text Available This paper discusses research results concerning properties of substrates used for nursery production of Austrian pine (Pinus nigra Arn and Scots pine (Pinus silvestris L in the experimental field of the Faculty of Forestry in Belgrade There is no doubt that peat is the most favorable substrate for successful massive nursery production of various woody species. Favorable physical, chemical and biochemical properties guarantee nursery production success, on condition that all technical and technological procedures, characteristic for this production, are recognized. Certain shortcomings that may occur with different kinds of peat (inadequate air capacity, nutrient deficiency, excessive acidity, etc may relatively easily be overcome with appropriate materials and procedures. Nevertheless, the main shortcoming of this most widely used nursery substrate, especially when the countries with economies in transition are concerned, is its high price. In order to overcome this problem, it is necessary to use domestic resources for creating a substrate of approximately the same characteristics, but much lower price Research results regarding the substrate – mixture "Goč 1" show that this substrate, comprising 30% silica sand, 20% earthworm manure, and 50% bark humus, is characterised by all necessary starting prerequisites for fulfilling the cited functions. This material represents loamy sand of almost neutral reaction (pHH2O=6.9, pHCaCl2=6.40, and even though its CEC is relatively modest (33.08 cmol(+ x kg–1, it is extremely well supplied with bases (V=94.32%. Also, "Goč 1" is rich in humus (8.94%, with relatively high content of total N (0.47%, and favorable C:N ratio (11.0. It is extremely well supplied with available phosphorus and potassium (>50 cmol(+ x kg–1. Further research regarding stability of this artificial substrate and alterations of its physical, chemical, and biochemical properties in the course of exploitation, together with

  17. Thinning increases climatic resilience of red pine

    Science.gov (United States)

    Magruder, Matthew; Chhin, Sophan; Palik, Brian; Bradford, John B.

    2013-01-01

    Forest management techniques such as intermediate stand-tending practices (e.g., thinning) can promote climatic resiliency in forest stands by moderating tree competition. Residual trees gain increased access to environmental resources (i.e., soil moisture, light), which in turn has the potential to buffer trees from stressful climatic conditions. The influences of climate (temperature and precipitation) and forest management (thinning method and intensity) on the productivity of red pine (Pinus resinosa Ait.) in Michigan were examined to assess whether repeated thinning treatments were able to increase climatic resiliency (i.e., maintaining productivity and reduced sensitivity to climatic stress). The cumulative productivity of each thinning treatment was determined, and it was found that thinning from below to a residual basal area of 14 m2·ha−1 produced the largest average tree size but also the second lowest overall biomass per acre. On the other hand, the uncut control and the thinning from above to a residual basal area of 28 m2·ha−1 produced the smallest average tree size but also the greatest overall biomass per acre. Dendrochronological methods were used to quantify sensitivity of annual radial growth to monthly and seasonal climatic factors for each thinning treatment type. Climatic sensitivity was influenced by thinning method (i.e., thinning from below decreased sensitivity to climatic stress more than thinning from above) and by thinning intensity (i.e., more intense thinning led to a lower climatic sensitivity). Overall, thinning from below to a residual basal area of 21 m2·ha−1 represented a potentially beneficial compromise to maximize tree size, biomass per acre, and reduced sensitivity to climatic stress, and, thus, the highest level of climatic resilience.

  18. Black Managers in White Corporations.

    Science.gov (United States)

    Fernandez, John P.

    The study examines the major determinants of the career patterns of black managers in white businesses and the effects of corporations on their black managers' identities and relationships to the black community. Analyzed were occupational mobility theories; white and black managers' career patterns, goals, and related factors; company employment…

  19. White noise and sleep induction.

    Science.gov (United States)

    Spencer, J A; Moran, D J; Lee, A; Talbert, D

    1990-01-01

    We studied two groups of 20 neonates, between 2 and 7 days old, in a randomised trial. Sixteen (80%) fell asleep within five minutes in response to white noise compared with only five (25%) who fell asleep spontaneously in the control group. White noise may help mothers settle difficult babies.

  20. Axion cooling of white dwarfs

    OpenAIRE

    Isern, J.; Catalan, S.; Garcia--Berro, E.; Salaris, M.; Torres, S.

    2013-01-01

    The evolution of white dwarfs is a simple gravothermal process. This process can be tested in two ways, through the luminosity function of these stars and through the secular variation of the period of pulsation of those stars that are variable. Here we show how the mass of the axion can be constrained using the white dwarf luminosity function.

  1. Astrophysics of white dwarf binaries

    NARCIS (Netherlands)

    Nelemans, G.A.

    2006-01-01

    White dwarf binaries are the most common compact binaries in the Universe and are especially important for low-frequency gravitational wave detectors such as LISA. There are a number of open questions about binary evolution and the Galactic population of white dwarf binaries that can be solved using

  2. Acting White: A Critical Review

    Science.gov (United States)

    Sohn, Kitae

    2011-01-01

    The hypothesis of acting White has been heatedly debated and influential over the last 20 years or so in explaining the Black-White test score gap. Recently, economists have joined the debate and started providing new theoretical and empirical analyses of the phenomenon. This paper critically reviews the arguments that have been advanced to…

  3. Species determination of pine nuts in commercial samples causing pine nut syndrome

    DEFF Research Database (Denmark)

    Mikkelsen, Aase Æ.; Jessen, Flemming; Ballin, Nicolai Z.

    2014-01-01

    fatty acids was used together with the diagnostic index and the sum of Δ5-fatty acids as diagnostic parameters. Diagnostic parameters from samples were then compared to reference material and literature data to determine the species. In a limited number of samples, the diagnostic parameters matched...... that other pine species than P. armandii could be involved in PNS as well. This study investigated 18 samples involved in PNS and received at the Danish Veterinary and Food Administration in 2011 through 2012. Samples were subjected to gas chromatographic analysis of fatty acids. The content of 11 individual...... neither our reference materials nor literature data. However, the morphology, the fatty acid analysis, and externally obtained DNA sequencing data suggest a P. armandii subspecies or a variety. With these possible P. armandii subspecies, P. armandii was identified in all analyzed samples. The application...

  4. The Microbiome of Endophytic, Wood Colonizing Bacteria from Pine Trees as Affected by Pine Wilt Disease

    DEFF Research Database (Denmark)

    Proença, Diogo Neves; Francisco, Romeu; Kublik, Susanne

    2017-01-01

    of the invasion with the pathogen were comparable. Interestingly diversity of wood endophytic bacteria increased with the severity of the diseases, with highest diversity levels observed in in the most affected trees. Our results suggest that in the first stages of the disease, the defence mechanisms of plants......Pine wilt disease (PWD) is a devastating forest disease present worldwide. In this study we analyzed the effects of the invasion of the pinewood nematode Bursaphelenchus xylophilus, the major pathogen causing PWD, on the endophytic microbiome of adult P. pinaster trees. Wood samples from trees...... with different degrees of PWD disease were collected at two sites (A and M) in Portugal. Endophytic bacteria were characterized based on directly extracted DNA by fingerprinting and barcoding using the 16S rRNA gene as marker. Furthermore, cultivation-based approaches were used to obtain isolates of the major...

  5. Forest Herbicide Benefits and Developments for Intensive Southern Pine Culture

    Science.gov (United States)

    James H. Miller

    1991-01-01

    Silvicultural treatments that use forest herbicides can accelerate wood production, enhance wildlife and recreational habitats, aid in endangered species recovery, and encourage plants that improve the aesthetics of woodlands. This paper focuses on the benefits of increased wood production derived from competition control for establishing southern pine plantations....

  6. Periodic Burning In Table Mountain-Pitch Pine Stands

    Science.gov (United States)

    Russell B. Randles; David H. van Lear; Thomas A. Waldrop; Dean M. Simon

    2002-01-01

    Abstract - The effects of multiple, low intensity burns on vegetation and wildlife habitat in Table Mountain (Pinus pungens Lamb.)-pitch (Pinus rigida Mill.) pine communities were studied in the Blue Ridge Mountains of North Carolina. Treatments consisted of areas burned from one to four times at 3-4 year...

  7. Camcore: Thirty-five years of Mesoamerican pine gene conservation

    Science.gov (United States)

    J.L. Lopez; W.S. Dvorak; G.R. Hodge

    2017-01-01

    Camcore is an international tree breeding and conservation program with headquarters at North Carolina State University. Camcore was founded in 1980 as a cooperative, non-profit organization to identify and save the dwindling natural populations of pines in the highland regions of Guatemala in Central America. Funded by the private sector, the program has played an...

  8. Corewood in South African pine: necessity and opportunities for ...

    African Journals Online (AJOL)

    Breeding programmes to date have created sound bases for further wood quality improvement of the various pine species, especially of the corewood zone. Opportunities for success are excellent as large variation in corewood properties still exists within the current breeding populations, combined with operationally ...

  9. Growth of Planted Slash Pine Under Several Thinning Regimes

    Science.gov (United States)

    W.F. Mann; Hans G. Enghardt

    1972-01-01

    Three intensities of thinning, each started at 10, 13, and 16 years, were applied to slash pine planted on a highly productive, cutover site in central Louisiana. Over a 9-year period, early and heavy thinnings increased diameter growth but reduced volume growth. The longer initial thinnings were deferred, the slower was the response in diameter growth. Growth on...

  10. Ten-year growth of planted slash pine after thinnings

    Science.gov (United States)

    Hans G. Enghardt; W.F. Mann

    1972-01-01

    volume growth of slash pine between ages 17 and 27 years was directly related to residual basal area per acre after thinning. Diameter growth was inversely related to stand density, and very heavy cutting was required to attain a rate of 3 inches in 10 years.

  11. High tonnage harvesting and skidding for loblolly pine energy plantations

    Science.gov (United States)

    Patrick Jernigan; Tom Gallagher; Dana Mitchell; Mathew Smidt; Larry Teeter

    2016-01-01

    The southeastern United States has a promising source for renewable energy in the form of woody biomass. To meet the energy needs, energy plantations will likely be utilized. These plantations will contain a high density of small-stem pine trees. Since the stems are relatively small when compared with traditional product removal, the harvesting costs will increase. The...

  12. Biomass and biomass change in lodgepole pine stands in Alberta

    Science.gov (United States)

    Robert A. Monserud; Shongming Huang; Yuqing Yang

    2006-01-01

    We describe methods and results for broad-scale estimation and mapping of forest biomass for the Canadian province of Alberta. Differences over successive decades provided an estimate of biomass change. Over 1500 permanent sample plots (PSP) were analyzed from across the range of lodgepole pine (Pinus contorta var. latifolia Engelm...

  13. Predicting lodgepole pine site index from climatic parameters in Alberta.

    Science.gov (United States)

    Robert A. Monserud; Shongming Huang; Yuqing. Yang

    2006-01-01

    We sought to evaluate the impact of climatic variables on site productivity of lodgepole pine (Pinus contorta var. latifolia Engelm.) for the province of Alberta. Climatic data were obtained from the Alberta Climate Model, which is based on 30-year normals from the provincial weather station network. Mapping methods were based...

  14. Removing Phosphorus from Aqueous Solutions Using Lanthanum Modified Pine Needles.

    Directory of Open Access Journals (Sweden)

    Xianze Wang

    Full Text Available The renewable pine needles was used as an adsorbent to remove phosphorus from aqueous solutions. Using batch experiments, pine needles pretreated with alkali-isopropanol (AI failed to effectively remove phosphorus, while pine needles modified with lanthanum hydroxide (LH showed relatively high removal efficiency. LH pine needles were effective at a wide pH ranges, with the highest removal efficiency reaching approximately 85% at a pH of 3. The removal efficiency was kept above 65% using 10 mg/L phosphorus solutions at desired pH values. There was no apparent significant competitive behavior between co-existing anions of sulfate, nitrate, and chloride (SO4(2-, NO3(- and Cl(-; however, CO3(2- exhibited increased interfering behavior as concentrations increased. An intraparticle diffusion model showed that the adsorption process occurred in three phases, suggesting that a boundary layer adsorption phenomena slightly affected the adsorption process, and that intraparticle diffusion was dominant. The adsorption process was thermodynamically unfavorable and non-spontaneous; temperature increases improved phosphorus removal. Total organic carbon (TOC assays indicated that chemical modification reduced the release of soluble organic compounds from 135.6 mg/L to 7.76 mg/L. This new information about adsorption performances provides valuable information, and can inform future technological applications designed to remove phosphorus from aqueous solutions.

  15. Songbird ecology in southwestern ponderosa pine forests: A literature review

    Science.gov (United States)

    William M. Block; Deborah M. Finch

    1997-01-01

    This publication reviews and synthesizes the literature about ponderosa pine forests of the Southwest, with emphasis on the biology, ecology, and conservation of songbirds. Critical bird-habitat management issues related to succession, snags, old growth, fire, logging, grazing, recreation, and landscape scale are addressed. Overviews of the ecology, current use, and...

  16. Ecology of the Pinewood Nematode in Southern Pine Chip Piles

    Science.gov (United States)

    L. David Dwinell

    1986-01-01

    The optimum temperature range for pinewood nematodes in southern pine chips was 35 to 40° C. Nematode populations declined at temperatures of -20°C. at temperatures above 45°C. and in anaerobic environments. Wood moisture content and presence of bluestain fungus also influenced nematode populations.

  17. Sucrose metabolism and growth in transplanted loblolly pine seedlings

    Science.gov (United States)

    Shi-Jean S. Sung; C.C. Black; Paul P. Kormanik

    1993-01-01

    Loblolly pine (Pinus taeda L.) seedling height, root collar diameter, and the specific activities of three sucrose metabolizing enzymes, namely, sucrose synthase (SS), acid invertase, and neutral invertase, were measured to assess seedling responses to transplant stress. It was concluded that i) SS was the dominant enzyme for sucrose metabolism in...

  18. Applied chemical ecology of the mountain pine beetle

    Science.gov (United States)

    Robert A. Progar; Nancy Gillette; Christopher J. Fettig; Kathryn Hrinkevich

    2014-01-01

    Mountain pine beetle, Dendroctonus ponderosae Hopkins, is a primary agent of forest disturbance in western North America. Episodic outbreaks occur at the convergence of favorable forest age and size class structure and climate patterns. Recent outbreaks have exceeded the historic range of variability of D. ponderosae-caused tree mortality affecting ecosystem goods and...

  19. Harvesting Costs For Mechanized Thinning Systems In Slash Pine Plantations

    Science.gov (United States)

    James E. Granskog

    1978-01-01

    Harvesting costs of four tree harvester systems are estimated for row thinning slash pine plantations. Systems incorporating a full-tree type harvester had lower harvesting costs per cord than shortwood and tree-length harvester systems in 15-year-old plantations.

  20. Topical treatment of contact dermatitis by pine processionary caterpillar

    Science.gov (United States)

    Cuevas, Pedro; Angulo, Javier; Giménez-Gallego, Guillermo

    2011-01-01

    Skin contact dermatitis by pine processionary (Thaumetopoea pityocampa) is a public health problem of increasing significance. The authors present here the case of a 65-year-old man who was diagnosed with processionary caterpillar dermatitis. Patient was treated with topical potassium dobesilate 5% cream twice a day for 2 days. An improvement occurred soon after treatment. PMID:22688482