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Gollner, S.; Zekely, J.; Govenar, B.; Le Bris, N.; Nemeschkal, H. L.; Fischer, C. R.; Bright, M. (2007). Tubeworm-assocated permanent meiobenthic communities from two chemically different hydrothermal vent sites on the East Pacific Rise. Marine Ecology Progress Series. 337: 39-49.
179470
Gollner, S.; Zekely, J.; Govenar, B.; Le Bris, N.; Nemeschkal, H. L.; Fischer, C. R.; Bright, M.
2007
Tubeworm-assocated permanent meiobenthic communities from two chemically different hydrothermal vent sites on the East Pacific Rise
Marine Ecology Progress Series
337: 39-49
Publication
NeMys doc_id: 18005
Available for editors  PDF available
The permanent meiobenthic community associated with aggregations of the tubeworm Riftia pachyptila was characterized at 2 different hydrothermal vent sites, Tica and Riftia Field, on the East Pacific Rise near 9° 50’ N. The maximum effluent temperatures were similar at both sites, but the chemistry of the hydrothermal fluids differed between sites. The abundance of meiobenthos was very low in 5 out of 6 samples (<61 ind. 10 cm–2) and was higher at Tica (20 to 976 ind. 10 cm–2) than at Riftia Field (<1 to 12 ind. 10 cm–2). Meiobenthos abundance was positively correlated with the volume of sediment within the tubeworm aggregations. Sediment consisted mainly of particulate organic material and contained only a few mineral grains. A total of 33 meiobenthic species (15 of them new to science) was identified, comprising nematodes, copepods, ostracods, tanaidaceans, and foraminiferans. The meiobenthic fauna contributed a third to the total species richness in the benthic community associated with these tubeworm aggregations. There were 19 meiobenthic species shared between the 2 sites. The majority of meiobenthic species were first-order primary consumers. The most abundant taxa were nematodes and copepods, and other taxa were rare at both sites. Nematodes numerically dominated the community at Tica, while no clear dominance of a higher taxon could be detected at Riftia Field. Species richness was similar at both sites, whereas Shannon-Wiener diversity index and Pielou’s evenness index were higher at Riftia Field. Due to the differences in the relative abundance of some species and unique occurrence of others at each site, the meiobenthic communities from the 2 different sites had an average Bray-Curtis dissimilarity of almost 70%.
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2014-06-18 16:05:08Z
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Unreviewed: has not been verified by a taxonomic editorChromadorita Filipjev, 1922 (additional source)
Checked: verified by a taxonomic editorDaptonema Cobb, 1920 (additional source)
Checked: verified by a taxonomic editorHalomonhystera Andrássy, 2006 (additional source)
Unreviewed: has not been verified by a taxonomic editorThalassomonhystera Jacobs, 1987 (additional source)