Nematodes and meiofauna in sediments obtained from RRS Charles Darwin cruise CD179, Portuguese continental margin
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| Main Authors: | , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2011
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| _version_ | 1867171362593832960 |
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| author | Ingels, Jeroen Billett, David Kiriakoulakis, Konstadinos Wolff, George A Vanreusel, Ann |
| author_facet | Ingels, Jeroen Billett, David Kiriakoulakis, Konstadinos Wolff, George A Vanreusel, Ann |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_776657 |
| institution | PANGAEA |
| language | en |
| publishDate | 2011 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Nematodes and meiofauna in sediments obtained from RRS Charles Darwin cruise CD179, Portuguese continental margin Ingels, Jeroen Billett, David Kiriakoulakis, Konstadinos Wolff, George A Vanreusel, Ann 56804#6; 56806#1; 56810#1; 56821#2; 56823#2; 56836#1; 56837#5; 56837#7; 56837#8; 56838#3; 56838#4; 56842#1; Cascais Canyon; CD179; CD179_10-1; CD179_21-2; CD179_23-2; CD179_36-1; CD179_37-5; CD179_37-7; CD179_37-8; CD179_38-3; CD179_38-4; CD179_42-1; CD179_4-6; CD179_6-1; Charles Darwin; HERMES; Hotspot Ecosystem Research on the Margins of European Seas; MEGAC; MegaCorer; Setubal Canyon 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. |
| title | Nematodes and meiofauna in sediments obtained from RRS Charles Darwin cruise CD179, Portuguese continental margin |
| topic | 56804#6; 56806#1; 56810#1; 56821#2; 56823#2; 56836#1; 56837#5; 56837#7; 56837#8; 56838#3; 56838#4; 56842#1; Cascais Canyon; CD179; CD179_10-1; CD179_21-2; CD179_23-2; CD179_36-1; CD179_37-5; CD179_37-7; CD179_37-8; CD179_38-3; CD179_38-4; CD179_42-1; CD179_4-6; CD179_6-1; Charles Darwin; HERMES; Hotspot Ecosystem Research on the Margins of European Seas; MEGAC; MegaCorer; Setubal Canyon |
| url | https://doi.org/10.1594/PANGAEA.776657 |