Sample records for sarcodina

  1. Tolerance of benthic foraminifera (Protista : Sarcodina) to hydrogen sulphide

    NARCIS (Netherlands)

    Moodley, L.; Schaub, B.; Van der Zwaan, G.J.; Herman, P.M.J.


    Benthic foraminifera are dominant members of tb meiofauna, commonly occurring below the anoxic-oxic interface in marine sediments. The absence of oxygen in marine coastal sediments is often correlated with the formation of hydrogen sulphide. In this study the tolerance of benthic foraminifera (from

  2. Differential response of benthic meiofauna to anoxia with special reference to Foraminifera (Protista: Sarcodina)

    NARCIS (Netherlands)

    Moodley, L.; Van der Zwaan, G.J.; Herman, P.M.J.; Kempers, L.; Van Breugel, P.


    Sediments collected from the northwestern Adriatic Sea (Mediterranean) were exposed to anoxic bottom-water conditions for more than 2 mo in order to examine the resistance of dominant meiobenthic taxa to prolonged anoxia. Copepods appeared to be most sensitive to anoxia, with densities being reduced

  3. Seasonality, biodiversity and microhabitats in benthic foraminiferal communities

    NARCIS (Netherlands)

    Jannink, N.T.


    Benrhic foraminifera (Protista: Sarcodina) are ol1l'-ceUed organisms that are widely spread over the worlds' oceans. Most of the species can be distinguished by the morphology of their sheJl, and the high preservation potential of these shells makes them a lIseful tool to date sediment layers

  4. [Animals (Animalia) in system of organisms. 2. Phylogenetic understanding of animals]. (United States)

    Shatalkin, A I


    may be through different and crossed classifications. Inside the given category of groups it is possible to distinguish: (2.1) Level of the organization (grade) described by the differences on the levels of organization: for example prokaryotic and eukaryotic levels of the organization. Eukaryotes can be divided into unicellular (Protoctista, Protista) and multicelluar (tissue-specific-Histonia) forms. (2.2) Types of the organization distinguishing groups of one level: for example, amoedoid type (Sarcodina), naked (Gymnamoebia), and testate (Testacea) amoebas. (2.3) Taxonomic groups as set-theoretical approximations of taxa. (2.4) Groups of the mixed nature. For example, Haeckel has recognized Protophyta and Protozoa describing the unicellular level of the organization inside plants and animals accordingly. Protozoa in Cavalier-Smith's system (2002, 2004) is also an example of groups of the mixed nature.


    Directory of Open Access Journals (Sweden)

    Adriani Sri Nastiti


    Full Text Available Fitoplankton dan zooplankton merupakan pakan alami bagi biota laut termasuk ikan. Tujuan penelitian adalah mengetahui struktur komunitas fitoplankton dan zooplankton serta kondisi lingkungan perairan di Teluk Jakarta. Penelitian dilakukan pada bulan April, Juni, Agustus dan Oktober 2009, pengamatan di 5 stasiun TJ1, TJ2, TJ3, TJ4 dan TJ5. Parameter yang di ukur adalah: kelimpahan fitoplankton dan zooplankton, suhu air, kecerahan, oksigen terlarut, pH, salinitas,. Hasil penelitian menunjukkan bahwa fitoplankton yang ditemukan 5 kelas meliputi: Cyanophyceae (6 spesies, Chlorophyceae (4 spesies, Bacillariophyceae (37 spesies, Dinophyceae (14 spesies dan Euglenophyceae (1 species. Zooplankton yang ditemukan 10 kelas meliputi : Crustacea (16 spesies, Holothuroidea (3 spesies, Ciliata (5 spesies, Sagittoidea (2 spesies, Sarcodina (3 spesies, Rotatoria (4 spesies, Echinodermata (1 spesies, Polychaeta (1 spesies, Urochordata (1 spesies dan Hydrozoa (1 spesies. Kelimpahan fitoplankton berkisar antara 1.587.086 - 3.799.799 sel/l. Kelimpahan zooplankton berkisar antara 922.010 - 3.834.261ind/l. Indeks keanekaragaman (=H  fitoplankton berkisar antara 1,74 – 3,64;indeks dominansi (=D berkisar antara 0,04-0,40 dan indeks keseragaman (=E berkisar antara 0,08-0,34. Indeks  biologi zooplankton menunjukkan nilai (=H berkisar antara 0,22-3,70; nilai  (=D berkisar antara 0,18-0,79; dan nilai (=E berkisar antara 0,01-0,37.  Suhu air berkisar  antara 29,5-31,6oC, pH berkisar antara 4,96-7,38 dan salinitas berkisar antara 12,0-31,5 o/oo. Teluk Jakarta diindikasikan mengalami tekanan lingkungan sehingga hanya beberapa spesies plankton mampu beradaptasi, yaitu dari kelas Bacillariophyceae (Chaetoceros sp dan Crustaceae (Calanus sp dan Acartia sp.  Phytoplankton and zooplankton is a natural food for other marine life including fish. Growth and development are supported by condition of aquatic environment. The research objective was to determine the community