Nematodes and meiofauna in sediments obtained from RRS Charles Darwin cruise CD179, Portuguese continental margin

DOI

Samples collected at two different depths (ca. 3200 and ca. 4200 m) in the Setúbal and Cascais canyons off the Portuguese coast, during the HERMES RRS Charles Darwin cruise CD179, were analysed for (1) sediment biogeochemistry (TOC, TN) and (2) composition, and structural and trophic diversity of nematode communities. Multivariate PERMANOVA analysis on the nematode community data revealed differences between sediment layers that were greater than differences between canyons, water depths, and stations. This suggests that biogeochemical gradients along the vertical sediment profile are crucial in determining nematode community structure. The interaction between canyon conditions and the nematode community is illustrated by biogeochemical patterns in the sediment and the prevalence of nematode genera that are able to persist in disturbed sediments. Trophic analysis of the nematode community indicated that non-selective deposit feeders are dominant, presumably because of their non-selective feeding behaviour compared to other feeding types, which gives them a competitive advantage in exploiting lower-quality food resources. This study presents a preliminary conceptual scheme for interactions between canyon conditions and the resident fauna.

Supplement to: Ingels, Jeroen; Billett, David; Kiriakoulakis, Kostas; Wolff, George A; Vanreusel, Ann (2011): Structural and functional diversity of Nematoda in relation with environmental variables in the Setúbal and Cascais canyons, Western Iberian Margin. Deep Sea Research Part II: Topical Studies in Oceanography, 58(23-24), 2354-2368

Identifier
DOI https://doi.org/10.1594/PANGAEA.776657
Related Identifier https://doi.org/10.1016/j.dsr2.2011.04.002
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.776657
Provenance
Creator Ingels, Jeroen ORCID logo; Billett, David; Kiriakoulakis, Kostas ORCID logo; Wolff, George A ORCID logo; Vanreusel, Ann
Publisher PANGAEA
Publication Year 2011
Funding Reference Sixth Framework Programme https://doi.org/10.13039/100011103 Crossref Funder ID 511234 https://cordis.europa.eu/project/id/511234 Hotspot Ecosystem Research on the Margins of European Seas
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-10.000W, 38.108S, -9.616E, 38.375N); Setubal Canyon; Cascais Canyon
Temporal Coverage Begin 2006-04-21T04:31:00Z
Temporal Coverage End 2006-05-05T02:31:00Z