WorldWideScience

Sample records for phytogeography

  1. Phytogeography of the tropical north-east African mountains

    Directory of Open Access Journals (Sweden)

    I. Friis

    1983-11-01

    Full Text Available The tropical north-east African mountains are tentatively divided into four phytochoria, the formal rank of which is not defined. The division is based on patterns of distribution and endemism in the region. The recognition of a distinct Afromontane phytochorion is now well established (Chapman & White, 1970; Werger, 1978; White, 1978. However, there is still very little information on the phytogeography of the individual mountains or mountain systems. This study hopes to fill a little of the gap by analysing distribution patterns and patterns of endemism in the flora of the tropical north-east African mountains. The north-east African mountain system is the largest in tropical Africa (see e.g. map in White, 1978. At the core of this system is the large Ethiopian massif, around which are located various mountains and mountain chains. These include the Red Sea Hills in the Sudan, the mountain chain in northern Somalia, the south-west Arabian mountains, and the Imatong mountains of south-east Sudan. The latter are often referred to the East African mountain system (White, 1978 but. as I will point out later, they also have a close connection with the south-west highlands of Ethiopia. The paper presents some results of my study of the mountain flora of tropical north-east Africa, particularly the forest species. Where no source is indicated, the data are from my own unpublished studies.

  2. Diversity and phytogeography of vascular epiphytes in a tropical-subtropical transition island, Taiwan

    NARCIS (Netherlands)

    Hsu, R.; Wolf, J.H.D.

    2009-01-01

    We present the first checklist of vascular epiphytes in Taiwan, based on herbarium specimens, literature records, and field observations. Epiphyte phytogeography was analyzed using Takhtajan's modified division in floristic regions. We ascertain the presence of 336 species of vascular epiphytes (24

  3. Phytogeography and conservation of neotropical dry forest with emphasis on Columbia

    OpenAIRE

    Banda Rodriguez, Karina Paola

    2017-01-01

    Dry forest is one of the most threatened tropical forests in the world. Human impact has caused its massive transformation but conservation of dry forest has often been neglected across Latin America. In Colombia, less than 10% of the original extension of dry forest remains. This thesis studies the phytogeography of neotropical dry forest and its relevance for conservation using data from 1602 tree species inventories made in dry forests across Latin America and the Caribbean ...

  4. Origins of native vascular plants of Antarctica: comments from a historical phytogeography viewpoint.

    Science.gov (United States)

    Mosyakin, S L; Bezusko, L G; Mosyakin, A S

    2007-01-01

    The article provides an overview of the problem of origin of the only native vascular plants of Antarctica, Deschampsia antartica (Poaceae) and Colobanthus quitensis (Caryophyllaceae), from the viewpoint of modern historical phytogeography and related fields of science. Some authors suggested the Tertiary relict status of these plants in Antarctica, while others favour their recent Holocene immigration. Direct data (fossil or molecular genetic ones) for solving this controversy is still lacking. However, there is no convincing evidence supporting the Tertiary relict status of these plants in Antarctica. Most probably D. antarctica and C. quitensis migrated to Antarctica in the Holocene or Late Pleistocene (last interglacial?) through bird-aided long-distance dispersal. It should be critically tested by (1) appropriate methods of molecular phylogeography, (2) molecular clock methods, if feasible, (3) direct paleobotanical studies, (4) paleoclimatic reconstructions, and (5) comparison with cases of taxa with similar distribution/dispersal patterns. The problem of the origin of Antarctic vascular plants is a perfect model for integration of modern methods of molecular phylogeography and phylogenetics, population biology, paleobiology and paleogeography for solving a long-standing enigma of historical plant geography and evolution.

  5. Phytogeography of Pelargonium

    Directory of Open Access Journals (Sweden)

    J. J. A. van der Walt

    1983-11-01

    Full Text Available The vast majority of the approximately 2(H species of Pelargonium oeeurs in Africa. About SO per cent of the species are endemic to the winter rainfall region of the Cape Province, and the centre of distribution lies in the south-western Cape. The distribution of the individual sections are discussed with the aid of distribution maps. The centre of distribution of most sections is in the south-western Cape, hut a few sections are centred in the eastern and western Cape. Several sections are represented by a few species in the summer rainfall region of southern Africa. As no fossils of Pelargonium are known, deductions about the origin of the genus can only be based on the present distribution of species, according to which arguments in favour of both a northern and a southern origin can he supported.

  6. Phytogeography of Saudi Arabia

    International Nuclear Information System (INIS)

    AlNafie, Abdulatif H

    2008-01-01

    This paper presents the phyto geography of Saudi Arabia and examines its phytogeographic location within the complex plant geographical regions of the Middle East. It reviews and discuses works have that been published so far by plant geographers and biogeographers on the phytogeographical regions of Southwest Asia and Northeast Africa, and determines the location of Saudi Arabia within it. The delimitation of the frontiers between plant-regions in Saudi Arabia, especially the south western part, which has always created some difficulties for biogeographers as well as phytogeographers who have studied the region. (author)

  7. Ecological Phytogeography: A Case Study of Commiphora Species ...

    African Journals Online (AJOL)

    Science, Technology and Arts Research Journal. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 2, No 3 (2013) >. Log in or Register to get access to full text downloads.

  8. Phytogeography of the vascular páramo flora of Podocarpus National Park, south Ecuador

    NARCIS (Netherlands)

    Lozano, P.; Cleef, A.M.; Bussmann, R.W.

    2009-01-01

    A plant ecological transect study of the páramos of the Podocarpus massif, southern Ecuador, was carried out between July 2001 and August 2004. Including herbarium records 187 vascular plant genera were found, which were used for the present phytogeographical analysis. Three geographic flora

  9. The phytogeography and ecotourism potential of the eastern province of lower part of the "Köprü river" basin.

    Science.gov (United States)

    Kaya, Bastürk; Akis, Ayhan

    2012-04-01

    Köprü River Basin is located in the western Taurus mountains in south-western Turkey. The area is in the Mediterranean phytogeographical region. The climate in the area is typically Mediterranean: mild and rainy in winter, hot and dry in summer. Xerophytic plants can easily grow in this climate. Pinus brutia forests are common in the study area. Maquis and garique elements with sclerophyll character also occur in the region. The study aims to determine the distribution of the vegetation in the eastern province of lower part of the "Köprü River" Basin. The factors which affect the distribution of vegetation are climate, landforms and soils. In order to determine the plant growth and climate relationship, the climatic data were analyzed. As well as the geological and geomorphological conditions, the soils were investigated and the effects of these factors on vegetation cover were analyzed. The region also has various attributes for the development of ecotourism, including canyons, forests and historical places. The region has a great potential for many different social, cultural, and scientific activities related to ecotourism. These are highland tourism, rafting, botanic tourism, trekking, and climbing. In order to make ecotourism available for local people to benefit, ecotourism should be developed and introduced to the world. Moreover, plans for the sustainability of the resources should be made. The study highlights the ecotourism potential of the area which is of social, economic, and ecological importance for the region.

  10. First fossil record of Alphonsea Hk. f. & T. (Annonaceae from the Late Oligocene sediments of Assam, India and comments on its phytogeography.

    Directory of Open Access Journals (Sweden)

    Gaurav Srivastava

    Full Text Available A new fossil leaf impression of Alphonsea Hk. f. & T. of the family Annonaceae is described from the Late Oligocene sediments of Makum Coalfield, Assam, India. This is the first authentic record of the fossil of Alphonsea from the Tertiary rocks of South Asia. The Late Oligocene was the time of the last significant globally warm climate and the fossil locality was at 10°-15°N palaeolatitude. The known palaeoflora and sedimentological studies indicate a fluvio-marine deltaic environment with a mosaic of mangrove, fluvial, mire and lacustrine depositional environments. During the depositional period the suturing between the Indian and Eurasian plates was not complete to facilitate the plant migration. The suturing was over by the end of the Late Oligocene/beginning of Early Miocene resulting in the migration of the genus to Southeast Asia where it is growing profusely at present. The present study is in congruence with the earlier published palaeofloral and molecular phylogenetic data. The study also suggests that the Indian plate was not only a biotic ferry during its northward voyage from Gondwana to Asia but also a place for the origin of several plant taxa.

  11. Phytogeography of the vascular páramo flora of Ramal de Guaramacal (Andes, Venezuela) and its ties to other páramo floras

    OpenAIRE

    Cuello, N.L.; Cleef, A.M.; Aymard, G.

    2010-01-01

    Ramal de Guaramacal is an outlier and lower elevation mountain range located at the northeastern end of the Venezuelan Andes. Phytogeographical patterns and affinities of the low altitude and wet vascular páramo flora of Ramal de Guaramacal, have been studied with emphasis in to the analysis of the floristic connections of the Guaramacal páramo flora with the neighboring dry páramos of the Sierra Nevada de Mérida and other páramo floras of the northern Andes and Central America. A total of 25...

  12. Phytogeography of the vascular páramo flora of Ramal de Guaramacal (Andes, Venezuela) and its ties to other páramo floras

    NARCIS (Netherlands)

    Cuello, N.L.; Cleef, A.M.; Aymard, G.

    2010-01-01

    Ramal de Guaramacal is an outlier and lower elevation mountain range located at the northeastern end of the Venezuelan Andes. Phytogeographical patterns and affinities of the low altitude and wet vascular páramo flora of Ramal de Guaramacal, have been studied with emphasis in to the analysis of the

  13. Taxonomic Revision of Pinus fujiii (Yasui Miki (Pinaceae and Its Implications for the Phytogeography of the Section Trifoliae in East Asia.

    Directory of Open Access Journals (Sweden)

    Toshihiro Yamada

    Full Text Available Pinus trifolia Miki 1939 (Pinaceae was originally proposed based on seed cones from the upper Miocene of Aichi and Gifu Prefectures, central Japan. However, before the publication of P. trifolia, a different name (Pinus fujiii (Yasui Miki was given to a female cone with the same morphology. On the other hand, P. fujiii auct. non (Yasui Miki has been used for seed cones with different morphologies from Yasui's holotype, i.e., apophyses arranged in 5:8 parastichies and a perexcentromucronate slightly-pointed umbo. As a result of re-examination on the Miki and Yasui specimens, we concluded that P. trifolia was a synonym for P. fujiii and proposed here Pinus mikii sp. nov. for cones assigned to P. fujiii auct. non (Yasui Miki. We also emended the diagnosis of P. fujiii based on these specimens. Pinus fujiii is characterized by a large female cone in which the apophyses with a centromucronate prickle-like umbo are arranged in 8:13 parastichies, and deciduous seed wings. These characters suggest that P. fujiii belongs to the section Trifoliae of the subgenus Pinus, which is now restricted to North and Central America and the Caribbean islands. Fossil data suggest that the P. fujiii lineage firstly appeared in Japan around the Eocene/Oligocene boundary. We speculate that the P. fujiii lineage might have moved southward to Japan from a refugium located elsewhere in high-latitude areas in response to the late Eocene cooling event, as occurred with other Trifoliae species in North America.

  14. Karoo biome: a preliminary synthesis. Part 2 - vegetation and history

    CSIR Research Space (South Africa)

    Cowling, RM

    1987-01-01

    Full Text Available and soil erosion. The focus of this volume is vegetation and its history. Included are chapters on vegetation physiognomy, plant growth, vegetation change, phytogeography, palaeo-ecology, palaeontology and archaeology...

  15. Vegetation patterns and environmental gradients in Benin

    NARCIS (Netherlands)

    Adomou, A.

    2005-01-01

    Key words: West Africa, Benin, vegetation patterns, floristic areas, phytogeography, chorology, floristic gradients, climatic factors, water availability, Dahomey Gap, threatened plants, biodiversity, conservation.Understanding plant species distribution patterns and the underlying factors is a

  16. First discovery of fossil winged seeds of Pinus L. (family Pinaceae ...

    Indian Academy of Sciences (India)

    Mahasin Ali Khan

    2017-07-04

    Jul 4, 2017 ... review the historical phytogeography and highlight the phytogeographic implication of this genus. Keywords. ... In the present paper, winged seeds of Pinus are described ..... the Himalayas and the onset and development of.

  17. Antennaria dioica na Pálavě?

    Czech Academy of Sciences Publication Activity Database

    Danihelka, Jiří

    2017-01-01

    Roč. 52, č. 1 (2017), s. 134-134 ISSN 1211-5258 Institutional support: RVO:67985939 Keywords : Antennaria dioica * Asteraceae * phytogeography Subject RIV: EF - Botanics OBOR OECD: Plant sciences, botany

  18. Northern glacial refugia and altitudinal niche divergence shape genome-wide differentiation in the emerging plant model Arabidopsis arenosa

    Czech Academy of Sciences Publication Activity Database

    Kolář, Filip; Fuxová, G.; Záveská, E.; Nagano, A. J.; Hyklová, L.; Lučanová, Magdalena; Kudoh, H.; Marhold, K.

    2016-01-01

    Roč. 25, č. 16 (2016), s. 3929-3949 ISSN 0962-1083 Institutional support: RVO:67985939 Keywords : approximate Bayesian computatuion * niche differentiation * phytogeography * Arabidopsis Subject RIV: EF - Botanics Impact factor: 6.086, year: 2016

  19. Psárky Alopecurus aequalis a A. geniculatus v České republice: jejich určování a rozšíření

    Czech Academy of Sciences Publication Activity Database

    Bureš, P.; Danihelka, Jiří; Husáková, M.; Pařil, P.

    2008-01-01

    Roč. 23, - (2008), s. 3-61 ISSN 0862-2035 R&D Projects: GA MŠk(CZ) LC06073; GA ČR(CZ) GA206/07/0706 Institutional research plan: CEZ:AV0Z60050516 Keywords : phytogeography * Poaceae * Central Europe Subject RIV: EF - Botanics

  20. Nálezy a ztráty jihomoravských slanisk - hvězdnice sivá

    Czech Academy of Sciences Publication Activity Database

    Danihelka, Jiří

    2009-01-01

    Roč. 57, č. 3 (2009), s. 107-109 ISSN 0044-4812 R&D Projects: GA MŠk LC06073 Institutional research plan: CEZ:AV0Z60050516 Keywords : Aster canus * phytogeography * Central Europe Subject RIV: EF - Bot anics

  1. Chřest přeslenitý (Asparagus verticillatus) lokálně zdomácnělý na jižní Moravě

    Czech Academy of Sciences Publication Activity Database

    Danihelka, Jiří; Chytrý, K.; Prokešová, H.; Sedláček, V.

    2017-01-01

    Roč. 52, č. 2 (2017), s. 155-162 ISSN 1211-5258 R&D Projects: GA ČR GB14-36079G Institutional support: RVO:67985939 Keywords : Asparagaceae * distribution * garden escape * introduced species * neophyte * phytogeography Subject RIV: EF - Botanics OBOR OECD: Plant sciences, botany

  2. Distributions of vascular plants in the Czech Republic. Part 4

    Czech Academy of Sciences Publication Activity Database

    Kaplan, Zdeněk; Danihelka, Jiří; Koutecký, P.; Šumberová, Kateřina; Ekrt, L.; Grulich, V.; Řepka, R.; Hroudová, Zdenka; Štěpánková, Jitka; Dvořák, V.; Dančák, M.; Dřevojan, P.; Wild, Jan

    2017-01-01

    Roč. 89, č. 2 (2017), s. 115-201 ISSN 0032-7786 R&D Projects: GA ČR GB14-36079G Institutional support: RVO:67985939 Keywords : distribution * maps * phytogeography Subject RIV: EF - Botanics OBOR OECD: Plant sciences, botany Impact factor: 3.000, year: 2016

  3. Ecogeographical Amplitude and Habitat of Two Species of the ...

    African Journals Online (AJOL)

    A systematic study involving phytogeography was carried out on two species of the genus-Terminalia in the Central Niger Delta Areas in River State. This research was aimed at establishing their biodynamic distribution and habitat in the study areas using the simple random sampling method based on standard procedure ...

  4. Author Details

    African Journals Online (AJOL)

    Soromessa, T. Vol 2, No 2 (2013) - Articles Floristic Composition and Community Analysis of Komto Afromontane Moist Forest, East Wollega Zone, West Ethiopia Abstract PDF · Vol 2, No 3 (2013) - Articles Ecological Phytogeography: A Case Study of Commiphora Species Abstract PDF · Vol 2, No 4 (2013) - Articles

  5. Origin of a boreal birch bog woodland and landscape development on a warm low mountain summit at the Carpathian–Pannonian interface

    Czech Academy of Sciences Publication Activity Database

    Gálová, A.; Hájková, Petra; Čierniková, M.; Petr, L.; Hájek, M.; Novák, J.; Rohovec, Jan; Jamrichová, Eva

    2016-01-01

    Roč. 26, č. 7 (2016), s. 1112-1125 ISSN 0959-6836 Institutional support: RVO:67985831 ; RVO:67985939 Keywords : charcoal * lake sediment * macrofossil * peat chemistry * phytogeography * pollen Subject RIV: DB - Geology ; Mineralogy; EH - Ecology, Behaviour (BU-J) Impact factor: 2.324, year: 2016

  6. Zur Flora und Vegetation des Jeschkenkammes

    Czech Academy of Sciences Publication Activity Database

    Petřík, Petr; Višňák, R.

    2006-01-01

    Roč. 14, - (2006), s. 127-140 ISSN 0941-0627 R&D Projects: GA AV ČR IAA6005202 Institutional research plan: CEZ:AV0Z60050516 Keywords : phytogeography * potential natural vegetation * nature conservation Subject RIV: EF - Botanics

  7. Lichen flora of the Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Liška, Jiří

    2012-01-01

    Roč. 84, č. 3 (2012), s. 851-862 ISSN 0032-7786 R&D Projects: GA MK(CZ) DF12P01OVV025 Keywords : changes * phytogeography * species diversity Subject RIV: EF - Botanics Impact factor: 2.833, year: 2012

  8. Distributions of vascular plants in the Czech Republic. Part 5

    Czech Academy of Sciences Publication Activity Database

    Kaplan, Zdeněk; Danihelka, Jiří; Šumberová, Kateřina; Chrtek, Jindřich; Rotreklová, O.; Ekrt, L.; Štěpánková, Jitka; Taraška, V.; Trávníček, B.; Prančl, Jan; Ducháček, M.; Hroneš, M.; Kobrlová, L.; Horák, D.; Wild, Jan

    2017-01-01

    Roč. 89, č. 4 (2017), s. 333-439 ISSN 0032-7786 R&D Projects: GA ČR GB14-36079G Institutional support: RVO:67985939 Keywords : distribution * maps * phytogeography Subject RIV: EF - Botanics OBOR OECD: Plant sciences, botany Impact factor: 3.000, year: 2016

  9. Distributions of vascular plants in the Czech Republic. Part 1

    Czech Academy of Sciences Publication Activity Database

    Kaplan, Zdeněk; Danihelka, Jiří; Štěpánková, Jitka; Bureš, P.; Zázvorka, Jiří; Hroudová, Zdenka; Ducháček, M.; Grulich, V.; Řepka, R.; Dančák, M.; Prančl, Jan; Šumberová, Kateřina; Wild, Jan; Trávníček, B.

    2015-01-01

    Roč. 87, č. 4 (2015), s. 417-500 ISSN 0032-7786 R&D Projects: GA ČR GB14-36079G; GA MŠk(CZ) LD14045 Institutional support: RVO:67985939 Keywords : distribution * maps * phytogeography Subject RIV: EF - Botanics Impact factor: 2.711, year: 2015

  10. Distributions of vascular plants in the Czech Republic. Part 2

    Czech Academy of Sciences Publication Activity Database

    Kaplan, Zdeněk; Danihelka, Jiří; Štěpánková, Jitka; Ekrt, L.; Chrtek, Jindřich; Zázvorka, Jiří; Grulich, V.; Řepka, R.; Prančl, Jan; Ducháček, M.; Kúr, P.; Šumberová, Kateřina; Brůna, Josef

    2016-01-01

    Roč. 88, č. 2 (2016), s. 229-322 ISSN 0032-7786 R&D Projects: GA ČR GB14-36079G; GA MŠk(CZ) LD14045 Institutional support: RVO:67985939 Keywords : distribution * maps * phytogeography Subject RIV: EF - Botanics Impact factor: 3.000, year: 2016

  11. Transatlantic disjunction in fleshy fungi. II. The Sparassis spathulata - S. brevipes complex

    Czech Academy of Sciences Publication Activity Database

    Petersen, R. H.; Borovička, Jan; Segovia, A. R.; Hughes, K. W.

    2015-01-01

    Roč. 14, č. 6 (2015), s. 30 ISSN 1617-416X R&D Projects: GA MŠk(CZ) LM2011019 Institutional support: RVO:61389005 Keywords : Cauliflower mushrooms * epitype * systematics * taxanomy * phytogeography Subject RIV: CB - Analytical Chemistry, Separation Impact factor: 1.572, year: 2015

  12. Potamogeton schweinfurthii A. Benn.,a new species for Europe

    Czech Academy of Sciences Publication Activity Database

    Kaplan, Zdeněk

    2005-01-01

    Roč. 77, - (2005), s. 419-431 ISSN 0032-7786 R&D Projects: GA ČR(CZ) GP206/03/P156 Institutional research plan: CEZ:AV0Z60050516 Keywords : Mediterranean region * phytogeography * taxonomy Subject RIV: EF - Botanics Impact factor: 1.545, year: 2005

  13. Herbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae)

    Czech Academy of Sciences Publication Activity Database

    Kolanowska, Marta; Naczk, A. M.; Jaskuła, R.

    nov, č. 11 (2016), č. článku 2600. ISSN 2167-8359 Institutional support: RVO:67179843 Keywords : Biodiversity * Ecological niche modeling * Neotropic ecozone * New species * Phytogeography * Psilochilus * Species richness * Taxonomy Subject RIV: EH - Ecology, Behaviour Impact factor: 2.177, year: 2016

  14. Evaluación taxonómica y ecogeográfica de las especies vegetales del área de pasivos ambientales mineros en ticapampa - ancash, Perú con fines de fitorremediación

    OpenAIRE

    Miñano Zavaleta, Antonieta

    2009-01-01

    Plants as phytoremediate agencies have been subject of several investigations aimed at solving pollution problems. However, there is no report of the high Andean species that specifically address the issue but some works are known where the plants generally offset one way or another pollution. In the present study was executed taxonomy (flowering, habit, habitat, flowering, fruiting) ecology (climate, soils) and phytogeography (altitudinal and latitudinal distribution) of the plant specie...

  15. A new basal sauropod dinosaur from the middle Jurassic of Niger and the early evolution of sauropoda.

    Directory of Open Access Journals (Sweden)

    Kristian Remes

    2009-09-01

    Full Text Available The early evolution of sauropod dinosaurs is poorly understood because of a highly incomplete fossil record. New discoveries of Early and Middle Jurassic sauropods have a great potential to lead to a better understanding of early sauropod evolution and to reevaluate the patterns of sauropod diversification.A new sauropod from the Middle Jurassic of Niger, Spinophorosaurus nigerensis n. gen. et sp., is the most complete basal sauropod currently known. The taxon shares many anatomical characters with Middle Jurassic East Asian sauropods, while it is strongly dissimilar to Lower and Middle Jurassic South American and Indian forms. A possible explanation for this pattern is a separation of Laurasian and South Gondwanan Middle Jurassic sauropod faunas by geographic barriers. Integration of phylogenetic analyses and paleogeographic data reveals congruence between early sauropod evolution and hypotheses about Jurassic paleoclimate and phytogeography.Spinophorosaurus demonstrates that many putatively derived characters of Middle Jurassic East Asian sauropods are plesiomorphic for eusauropods, while South Gondwanan eusauropods may represent a specialized line. The anatomy of Spinophorosaurus indicates that key innovations in Jurassic sauropod evolution might have taken place in North Africa, an area close to the equator with summer-wet climate at that time. Jurassic climatic zones and phytogeography possibly controlled early sauropod diversification.

  16. Epiphytic ferns in swamp forest remnants of the coastal plain of southern Brazil: latitudinal effects on the plant community

    Directory of Open Access Journals (Sweden)

    Letícia S. Machado

    Full Text Available ABSTRACT Community structure and spatial distribution of epiphytic ferns in swamp forest remnants along the coastal plain of the state of Rio Grande do Sul were analyzed. A total of 440 trees were sampled in fifty-seven 10 x 10 m plots. Each phorophyte was divided into five ecological zones (strata, where all species of epiphytic ferns were recorded. A total of 34 species representing 18 genera in six families were recorded. Polypodiaceae was the most represented family with 17 species, and Microgramma vacciniifolia had the highest epiphytic importance value. Characteristic holoepiphyte was the predominant ecological category, representing 70 % of the species. Ordination analysis showed a gradual change in floristic composition between ecological zones with richness differing significantly between strata. We observed that with increasing latitude there was a decrease in mean temperature and total rainfall, but an increase in frosts. These climatic and phytogeography changes result in a reduction in species richness and a change in the structure of epiphytic fern communities in a north-to-south direction. The importance of swamp forest remnants of the coastal plain to the diversity of epiphytic ferns is discussed.

  17. Floristic study of Khargushan Mountain, Lorestan province

    Directory of Open Access Journals (Sweden)

    Mohammad Mehdi Dehshiri

    2016-09-01

    Full Text Available The aim of this research was plant identification, introduction to the flora, determination of life forms and geographical distribution in Khargushan Mountain. This Mountain, with 6000 hectares, situated on the east of Poldokhtar and south-west of Khorramabad. The maximum altitude of this mountain is thought 2329 m. Plant specimens were collected from different parts of the area during two growing seasons 2013-2014. The plant biological spectrum of the area was plotted by means of life forms results. The position of the area within Iran’s phytogeography classification was studied based on geographical distribution data and references. From 211 identified species in the studied area, 3 Pteridophytes, 1 Gymnosperm, 176 dicotyledons and 31 monocotyledons were presented. These species belong to 50 families and 150 genera. The important families are Fabaceae, Asteraceae, Apiaceae and Lamiaceae with 12.79%, 10.42%, 8.05% and 7.58%, respectively. Life forms of the plant species include Therophytes 36.49%, Hemicryptophytes 31.28%, Cryptophytes 18.96%, Phanerophytes 8.06%, and Chamaephytes 5.21%. 138 species (65.4% were endemics of Irano-Turanian region; 32 species of them were endemics of Iran which among them, distribution of 4 species (Astragalus lurorum, Dionysia gaubae, Hedysarum gypsophilum and Phlomis lurestanica limited to Lorestan province.

  18. E. A. C. L. E. (Ted Scheipe (1924-1985 — a biography

    Directory of Open Access Journals (Sweden)

    E. G. H. Oliver

    1986-07-01

    Full Text Available Prof. E.A.C.L.E. Scheipe was born in Durban on 27 July 1924 and died in Cape Town on  12 October 1985. He studied at the University of Natal and at Oxford, England. He was awarded an M.Sc. (S. Afr. for a thesis on the ecology of the Natal Drakensberg and a D. Phil. (Oxon. for a thesis on the ecology of bryophytes. For a brief period he was Curator of the Fielding Herbarium, Oxford. In  1953 he was appointed Lecturer in Botany at the University of Cape Town, until in  1973 he was awarded a full professorship (ad hominem and the title of Director of the Bolus Herbarium. Here he established a school of taxonomy and promoted  22  theses. His main fields of research were the taxonomy and phytogeography of Pteridophyta (especially African groups and of Orchidaceae.He has  112 publications to his credit and collected over 7 000 numbers in various regions of Africa, in Europe and the Himalayas. He was a keen gardener and was active in several societies promoting horticulture, orchidology and nature conservation. He was a member of several scientific committees and was repeatedly honoured for his work.Three children were born from his marriage to Sybella Gray, also a botanist.

  19. Conservation Priorities for Tree Ferns (Cyatheaceae in Sri Lanka

    Directory of Open Access Journals (Sweden)

    R. H. G. Ranil

    2011-09-01

    Full Text Available Diversity, phytogeography and conservation status of Sri Lankan tree-ferns are discussed in this paper. The family Cyatheaceae is represented by eight taxa (seven species and one doubtful variety in Sri Lanka with a high rate of endemism of 75%. Apart from Cyathea walkerae and C. gigantea, the other species are restricted to geographically isolated areas in the country with limited population sizes. Fortunately, all Sri Lankan species of Cyathea occur within the protected areas of the wet zone. However, ex situ conservation is limited to C. walkerae and C. crinita at Botanic Gardens in Hakgala. Despite the family being listed in Annex II of CITES, its species have not yet been assessed in Sri Lanka for the Red Listing criteria. Identification of the nature and level of threat to Sri Lankan Cyathea species is therefore a major priority, followed by the monitoring of populations in situ in protected areas in the wet zone. Ex situ conservation of rare species and cultivation of Cyathea species from spores have also been identified as priority areas. A strong programme should be developed with the National Herbarium to explore little known forest patches in the wet zone to enhance our knowledge of Cyathea species in Sri Lanka. Such information will provide a strong basis for preparing a conservation and management plan for tree-ferns in the country.

  20. Geographic distribution and taxonomic circumscription of populations within Coryphantha section Robustispina (Cactaceae).

    Science.gov (United States)

    Baker, Marc A; Butterworth, Charles A

    2013-05-01

    Taxonomic circumscription of subspecific taxa within Coryphantha robustispina was evaluated with morphological data and microsatellites. This study was the first to compare adequately sampled morphological and DNA analyses at the population level in the Cactaceae. This comparison was important to test reliability of both methods and to gain a better understanding of phytogeography, evolution, and systematics of the species, knowledge that could prove useful for other taxa as well. Populations of C. robustispina subsp. robustispina are listed as endangered by the U. S. Fish and Wildlife Service. Our primary goal was to explore correlations among geographical distribution, morphology, and genetics of selected populations throughout the range of the species and the outgroup, C. poselgeriana. • Stem characters were measured for 638 individuals among 16 populations. Flower characters were measured for 180 individuals among 12 populations. Ten microsatellite DNA loci were isolated and characterized for 204 individuals among 13 populations. Data were analyzed using various multivariate analyses. • Our results indicated that, within Coryphantha robustispina, there were three morphologically, genetically, and geographically coherent groups represented by the names C. robustispina subsp. robustispina, C. robustispina subsp. uncinata, and C. robustispina subsp. scheeri. For most analyses, distinctions among the three groups were primarily not as great as those between any one of them and the outgroup. • Results suggested that the three subspecific taxa within Coryphantha robustispina are good subspecies but should not be elevated to species rank. The closely aligned results between morphology and microsatellite data support the design and utility of both methods.

  1. New Floristic Records of Ranunculaceae Family

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    Hasan Özçelik

    2012-12-01

    Full Text Available Abstract: A study has been made about the revision of Ranunculaceae family between 2009-2011 years. Turkiye's important and major herbariums (especially Hb. GUL have been visited and related family patterns were revised. In end of the study; it is determined that 55 taxa as new records for 78 geographical squares in Flora of Türkiye. In this study, the taxa of Ranunculaceae that have new records and spreading in an interesting way are declared. Key words: Ranunculaceae, Türkiye, New records taxa, Phytogeography, Revision. Ranunculaceae Familyasından Yeni Floristik Kayıtlar Özet: 2009-2011 yılları arasında Ranunculaceae familyasının revizyonu amaçlı bir çalışma yapılmıştır. Çalışmada, GUL Herbaryumu başta olmak üzere Türkiye'nin önemli ve büyük herbaryumları ziyaret edilip ilgili familya örnekleri yeniden incelenmiştir. Çalışmaların sonucunda; Türkiye Florası'ndaki 78 coğrafi kare için 55 taksonun yeni kayıt olduğu belirlenmiştir. Bu makalede, yeni kare kaydı olan ve yayılışı ilginç bulunan Ranunculaceae taksonlarına yer verilmektedir. Anahtar Kelimeler: Ranunculaceae, Türkiye, Yeni Kayıt Taksonlar, Bitki coğrafyası, Revizyon.

  2. δ18O and δD variations in some volcanic lakes on the Cameroon Volcanic Line (West-Africa: generating isotopic baseline data for volcano monitoring and surveillance in Cameroon

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    . Issa

    2014-06-01

    preeminent, role relative to the other factors. Consequently, the interplay between climatology, phytogeography, hydrology and morphometry might help shape the isotopic composition of the lakes. 

  3. The Spanish Society of Soil Science: history and future perspectives

    Science.gov (United States)

    Bellinfante, Nicolás; Arbelo, Dolores; Rodríguez, Antonio

    2013-04-01

    The Spanish Society of Soil Science (SECS; http://www.secs.com.es) has reached sixty years of existence, after being established in 1947 at the Spanish Council for Scientific Research (CSIC) as an initiative of renowned scientists including José María Albareda, Salvador Rivas Goday, Fernando Burriel, Tomás Alvira and others. However, soil studies in Spain began in the first third of XX century, coordinated by Emilio Huguet del Villar, internationally outstanding researcher who was the President of the Subcommittee for the Mediterranean Region of the International Society Soil Science, with the activities of the Forest Research Institute and the Institute of Mediterranean Soils of the Regional Catalonian Government. With the creation of the CSIC and the Spanish Institute of Soil Science and Agrobiology, directed by José M. Albareda, Soil Science research was promoted in all scientific fields and through the Spanish geography. The SECS is considered equally heiress of previously existing organizations, in particular the Spanish Commission of Soil Science and Phytogeography, created in 1925, which was the Spanish voice in various international organizations and meetings related with Soil Science. After these years, Soil Science has developed considerably, showing a great diversification of fields of study and research and its applications, as well as a growing social awareness of the soil degradation processes and the need to implement measures to protect natural resources nonrenewable on a human scale, and an increasing role of universities and CSIC in Soil Science research. Currently, the SECS is a scientific organization dedicated to promoting the study, knowledge, research and protection of soil resources; spread the scientific importance of soil functions as nonrenewable natural resource in society and promote the interest in its protection; and preserve the knowledge about soils, their management and use, both from productive and environmental perspectives

  4. Composição florística de uma comunidade savânica no Rio Grande do Norte, Nordeste do Brasil Floristic composition of a savanna community in Rio Grande do Norte, northeastern Brazil

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    Ana Cláudia Pereira de Oliveira

    2012-09-01

    Full Text Available No município de Rio do Fogo foi registrada, em 1976, somente através de imagens de radar, uma comunidade de Cerrado para a qual, até então, não havia estudo in loco. Algumas questões foram elaboradas sobre essa comunidade: A região delimitada e descrita por meio de imagens de radar pode ser considerada Cerrado, do ponto de vista florístico? Qual a fitogeografia das espécies registradas nessa comunidade? Há ocorrência de espécies raras, endêmicas ou ameaçadas de extinção na composição florística dessa comunidade? Para responder a estas questões realizou-se o levantamento florístico em 400 ha, no período de agosto/2007 a setembro/2009. Os dados indicaram que das 94 espécies registradas em Rio do Fogo, 73 são associadas ao Cerrado, 69 também se distribuem na Caatinga, 60 na Floresta Atlântica, 47 na Floresta Amazônica, 14 no Pantanal e 11 no Pampa. Foram listadas pela primeira vez para o Rio Grande do Norte (RN 39 espécies; Stylosanthes gracilis Kunth (Fabaceae e Aristida laevis (Nees Kunth (Poaceae são citadas pela primeira vez para o Nordeste do Brasil. Aspilia procumbens Baker (Asteraceae apresentou distribuição restrita ao estado e insere-se na categoria criticamente em perigo; já Stilpnopappus cearensis Hubber na categoria vulnerável à extinção. Concluiu-se que essa área pode ser classificada floristicamente como pertencente ao domínio do Cerrado, podendo ser apontada como área-chave para a conservação.In the municipality of Rio do Fogo (in 1976 a savanna community was registered by radar that, until now, has not been studied in loco. Some questions were asked about this community: Is this area Cerrado, floristically? What is the phytogeography of plant species in this community? Do rare, endemic or endangered species occur in this community? To answer these questions a floristic inventory, from August 2007 to September 2009, was performed in 400 ha of this region. The data indicated that of the 94

  5. Fitogeografía de la Sierra Monte Grande, Charcas, San Luis Potosí, México

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    Reyes Agüero J. Antonio

    1999-06-01

    Full Text Available Monte Grande is a small (41.8 km mountain range located at the southernmost part of the northern plateau of Mexico. It has a dry climate and its vegetation is characterized by pinyon woodland, oak scrub and three kinds of xerophytic scrub. Based on its flora of 397 species, we analyzed the historie phytogeography of Monte Grande, using only the taxa (families, genera and species that have a restricted distribution. At the family level, we identified three patterns of distribution: 1 from North America to northern South America; 2 mostly in the American continent; 3 families related to the Mediterranean region. At the genus level, five patterns were identified: 1 endemic of arid and semiarid lands of Mexico and adjacent regions of the United States; 2 from southern United States to Central America; 3 broadly distributed, but highly related to the Antillean region; 4 with Mediterranean relations; 5 disjunct or vicariant between the arid lands of North and South America. At the species level, nine patterns of distribution were identified: 1 septentrional plateau; 2 meridional plateau; 3 all plateaus and adjacent regions; 4 all plateaus-Sierra Madre de Oaxaca; 5 all plateaus-northwestern coast plain; 6 all plateaus-both coastal plains; 7 all plateaus-northeastern coastal plain; 8 Mexican xerophytic region; 9 all plateaus-both sierras Madre. These patterns are unlikely to be accidental, as they agree with recent theories about the process that led to the present landform configuration of the American Continent. On the basis of this interpretation, we postulate a major role of the Caribbean and the Former Mediterranean in the florigenesis of present linages of the arid and semiarid lands of Mexico.La sierra Monte Grande, con una extensión de 41.8 km, se localiza en el sur de la altiplanicie septentrional de México. Tiene un clima seco (8So y en ella prevalecen los matorrales xerófilos, piñonares y encinares. A partir de su flora, compuesta por 397

  6. DARWIN Y LA DOMESTICACIÓN DE PLANTAS EN LAS AMÉRICAS: EL CASO DEL MAÍZ Y EL FRÍJOL

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    Maria Isabel Chacon Sanchez

    2009-10-01

    Lima bean. Finally, the relevance of the phenomenon of multiple domestication in the study of the origin of the domestication syndrome is discussed along with the contribution that the discipline known as Crop Evolution can make in advancing our knowledge about adaptation processes in wild populations and the future of genetic improvement and adoption of new crops relevant for human welfare. Key words: archaeology, genetics, domestication, crop evolution, phytogeography

  7. Florestas estacionais e áreas de ecótono no estado do Tocantins, Brasil: parâmetros estruturais, classificação das fitofisionomias florestais e subsídios para conservação Seasonal forests and ecotone areas in the state of Tocantins, Brazil: structure, classification and guidelines for conservation

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    Ricardo Flores Haidar

    2013-09-01

    areas (Seasonal Forest/Ombrophilous Forest in the state of Tocantins (Brazil. We aimed to provide information for conservation, management, environmental compensation and restoration strategies, and discuss their phytogeography identities in relation to other Brazilian forests. We selected 22 areas in 18 hydrogeographic basins and performed an inventory of all trees species (DHB > 5 cm occurring in 477 plots of 400 m². We conducted a classification analysis of the vegetation using the TWINSPAN method in two different scales. The first assessed the beta diversity among plots within the state of Tocantins, and the second analysed similarities between these forests and other forests ecosystems in the Cerrado ecoregion and related ecotones in Central Brazil. A wide variation of species richness (33 to 243 species, density (486 to 1179 trees.ha-1, basal area (14.04 to 37.49 m². ha-1, diversity indexes (H’ = 2.75 to 4.59 and evenness (J’ = 0.72 to 0.86 across the sites was found. Based on floristic and structural aspects, classification analyses identified four major forests types: Seasonal Deciduous Forest, Seasonal Semi-deciduous Forest, and two ecotones Seasonal Semideciduous Forest/Ombrophilous Forest and ecotone Seasonal Deciduous Forest / Ombrophilous Forest. In order to maintain plant and habitat diversity in the Amazon/Cerrado transition zone, the creation of conservation areas should be intensified using biogeographical patterns as site selection criteria.

  8. Estrutura comunitária e amplitude ecológica do componente lenhoso de uma floresta de restinga mal drenada no sudeste do Brasil Woody-layer structure and ecological amplitude of a poorly drained beach-ridge forest in southeastern Brazil

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    Luis Fernando Tavares de Menezes

    2010-09-01

    seasonally flooded beach-ridge forest and species functional characteristics regarding soil flood tolerance at Restinga da Marambaia (Rio de Janeiro. We sampled 50 contiguous 10 x 10m plots (0.5 ha and recorded woody individuals with trunk breast height diameter (dbh >2.5 cm. We found 1223 live trees, belonging to 24 families, 43 genera and 57 species. Shannon's index was 2.87 and equitability (J' 0.68. Total estimated density and basal area were 2446 ind.ha-1 and 25.14 m².ha-1. The most species-rich families were Myrtaceae (13, Leguminosae (5, Annonaceae, Euphorbiaceae, Myrsinaceae and Sapindaceae (4. Ten species had importance values (IV over nine and included 75% of total IV. Species with high IV were Tapirira guianensis Aubl. (42.42, Amaioua intermedia Mart. ex Roem. & Schult. (40.77 and Chaetocarpus myrsinites Baill. (39.98, which together hold 41% of total IV. Results indicated that the tree community studied was mainly composed of species that prefer drier or periodically flooded soils, but not permanently flooded soils. The seasonally flooded forest in Restinga da Marambaia shows greatest similarity with seasonally flooded forests at Jurubatiba National Park - RJ (21.4%; 23.8%. Since the flora of seasonally flooded forests in southern and southeastern Brazilian restingas apparently is not restricted to these formations, it is reasonable to conclude that floristic pattern changes in the vegetation of these areas may be the result of the proximity of species' propagule sources (i.e., those with high soil flood tolerance, plus the phytogeography of the species linked to distribution limits caused by climatic conditions.

  9. Improved data for integrated modeling of global environmental change

    Science.gov (United States)

    Lotze-Campen, Hermann

    2011-12-01

    2011 Impacts of population growth, economic development, and technical change on global food production and consumption Agricult. Syst. 104 204-15 Verburg P H, Ellis E C and Letourneau A 2011 A global assessment of market accessibility and market influence for global environmental change studies Environ. Res. Lett. 6 034019 Woodward F I, Smith T M and Emanuel W R 1995 A global land primary productivity and phytogeography model Glob. Biogeochem. Cycles 9 471-90