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Species occurring in the mytilid and alvinellid communities within the 9°N hydrothermal field at the East Pacific Rise

Dataset homepage

Citation

Galkin S V, Goroslavskaya E I (2008). Species occurring in the mytilid and alvinellid communities within the 9°N hydrothermal field at the East Pacific Rise. PANGAEA - Data Publisher for Earth & Environmental Science. Occurrence dataset https://doi.org/10.1594/pangaea.755890 accessed via GBIF.org on 2025-05-24.

Description

Samples from mytilid mollusk and alvinellid polychaet communities and associated fauna were collected from the MIR-1 and MIR-2 manned submersibles during Cruise 49 of R/V Akademik Mstislav Keldysh at 9°? of the East Pacific Rise. Mytilids Bathymodiolus thermophylus occupied zones of diffuse discharge of hydrothermal solutions with temperature anomalies of some degrees. The alvinellid assemblages were located in the hottest parts of hydrothermal vents (~40°C) over sulfide mounds. Taxonomic compositions of these kinds of assemblages are different. Taxonomic richness of the mytilid communities is almost twice higher. Comparison of samples with use of the Jaccard's index showed greater similarity among alvinellid samples than that among mytilid ones. With respect to species number, polychaets formed the most diverse group, while gastropods were the second most diverse. Dominant species had greater proportions in the alvinellid communities than in mytilid ones. This study showed great differences between the mytilid and alvinellid associations in their species composition and community structure.

Taxonomic Coverages

  1. Animalia
    rank: kingdom
  2. Cnidaria
    rank: kingdom
  3. Nemertea
    rank: kingdom
  4. Nematoda
    rank: kingdom
  5. Annelida
    rank: kingdom
  6. Mollusca
    rank: kingdom
  7. Arthropoda
    rank: kingdom
  8. Echinodermata
    rank: kingdom

Geographic Coverages

Event: AMK49-4622-M1, Hydrothermal area 9°50N, EPR ; Event: AMK49-4624, Hydrothermal area 9°50N, EPR ; Event: AMK49-4625-M1, Hydrothermal area 9°50N, EPR ; Event: AMK49-4626-M2, Hydrothermal area 9°50N, EPR ; Event: AMK49-4642-M2, Hydrothermal area 9°50N, EPR ; Event: AMK49-4659, Hydrothermal area 9°50N, EPR ; Event: AMK49-4665-M2, Hydrothermal area 9°50N, EPR ; Event: AMK49-4667-M2, Hydrothermal area 9°50N, EPR ; Event: AMK49-4668-M1, Hydrothermal area 9°50N, EPR ;

Bibliographic Citations

Contacts

Sergey V Galkin
originator
E I Goroslavskaya
originator
metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
email: info@pangaea.de
homepage: https://www.pangaea.de
Frank-Oliver Glöckner
administrative point of contact
Robert Huber
administrative point of contact
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