Ingels, Jeroen; Billett, David; Kiriakoulakis, Kostas; Wolff, George A; Vanreusel, Ann (2011): Nematodes and meiofauna in sediments obtained from RRS Charles Darwin cruise CD179, Portuguese continental margin [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.776657, Supplement to: Ingels, J et al. (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, https://doi.org/10.1016/j.dsr2.2011.04.002
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Abstract:
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.
Project(s):
Funding:
Sixth Framework Programme (FP6), grant/award no. 511234: Hotspot Ecosystem Research on the Margins of European Seas
Coverage:
Median Latitude: 38.195955 * Median Longitude: -9.866488 * South-bound Latitude: 38.107500 * West-bound Longitude: -9.999800 * North-bound Latitude: 38.375000 * East-bound Longitude: -9.615700
Date/Time Start: 2006-04-21T04:31:00 * Date/Time End: 2006-05-05T02:31:00
Event(s):
CD179_4-6 (56804#6) * Latitude: 38.154300 * Longitude: -9.615700 * Date/Time: 2006-04-21T04:31:00 * Elevation: -3275.0 m * Location: Setubal Canyon * Campaign: CD179 * Basis: Charles Darwin * Method/Device: MegaCorer (MEGAC)
CD179_6-1 (56806#1) * Latitude: 38.154800 * Longitude: -9.616000 * Date/Time: 2006-04-21T20:59:00 * Elevation: -3275.0 m * Location: Setubal Canyon * Campaign: CD179 * Basis: Charles Darwin * Method/Device: MegaCorer (MEGAC) * Comment: 12/12, cores 32-40 cm
CD179_10-1 (56810#1) * Latitude: 38.153700 * Longitude: -9.617000 * Date/Time: 2006-04-23T20:14:00 * Elevation: -3224.0 m * Location: Setubal Canyon * Campaign: CD179 * Basis: Charles Darwin * Method/Device: MegaCorer (MEGAC) * Comment: 12/12, cores 32-39 cm
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Ingels, J; Billett, D; Kiriakoulakis, K et al. (2011): Meiofaunal abundance in sediments obtained during RRS Charles Darwin cruise CD179. https://doi.org/10.1594/PANGAEA.776655
- Ingels, J; Billett, D; Kiriakoulakis, K et al. (2011): Nematode abundance in sediments obtained during RRS Charles Darwin cruise CD179. https://doi.org/10.1594/PANGAEA.776656