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


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.

Supplement to: Galkin, Sergey V; Goroslavskaya, E I (2008): Bottom fauna associated with mussel beds and alvinellid communities in the hydrothermal field at 9° N of the East Pacific Rise. Translated from Okeanologiya, 2008, 48(4), 553-560, Oceanology, 48(4), 509-516

DOI https://doi.org/10.1594/PANGAEA.755890
Related Identifier https://doi.org/10.1134/S0001437008040061
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.755890
Creator Galkin, Sergey V; Goroslavskaya, E I
Publisher PANGAEA
Publication Year 2008
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1332 data points
Discipline Earth System Research
Spatial Coverage (-104.294W, 9.838S, -104.291E, 9.850N); Hydrothermal area 9°50N, EPR
Temporal Coverage Begin 2003-09-05T00:00:00Z
Temporal Coverage End 2003-10-01T00:00:00Z