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Diversity and species distribution of polychaetes, isopods and bivalves in the Atlantic sector of the deep Southern Ocean

Ellingsen, Kari E.; Brandt, Angelika; Ebbe, Brigitte; Linse, Katrin. 2007 Diversity and species distribution of polychaetes, isopods and bivalves in the Atlantic sector of the deep Southern Ocean. Polar Biology, 30 (10). 1265-1273. 10.1007/s00300-007-0287-x

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Abstract/Summary

We examined deep-sea benthic data on polychaetes, isopods and bivalves from the Atlantic sector of the Southern Ocean. Samples were taken during the expeditions EASIZ II (1998), ANDEEP I and II (2002) (depth: 742–6,348 m). The range between sites varies from 3 to 1,900 km. Polychaetes (175 species in total) and isopods (383 species) had a high proportion of species restricted to one or two sites (72 and 70%, respectively). Bivalves (46 species) had a higher proportion of species represented at more sites. Beta diversity (Whittaker and Jaccard) was higher for polychaetes and isopods than for bivalves. The impact of depth on species richness was not consistent among groups; polychaetes showed a negative relationship to depth, isopods displayed highest richness in the middle depth range (2,000–4,000 m), whereas bivalves showed no clear relationship to depth. Species richness was not related to latitude (58–74°S) or longitude (22–60°W) for any group.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1007/s00300-007-0287-x
Programmes: BAS Programmes > Global Science in the Antarctic Context (2005-2009) > Biodiversity, Functions, Limits and Adaptation from Molecules to Ecosystems
ISSN: 0722-4060
NORA Subject Terms: Zoology
Ecology and Environment
Date made live: 07 Jan 2009 17:16
URI: http://nora.nerc.ac.uk/id/eprint/5451

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