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Van Gaever, S.; Vanreusel, A.; Hughes, J.; Bett, B.; Kiriakoulakis, K. (1999). The macro- and micro-scale patchiness of meiobenthos associated with the Darwin Mounds (north-east Atlantic). Journal of the Marine Biological Association of the UK. 84(3): 547-556.
181422
10.1017/s0025315404009555h [view]
Van Gaever, S.; Vanreusel, A.; Hughes, J.; Bett, B.; Kiriakoulakis, K.
1999
The macro- and micro-scale patchiness of meiobenthos associated with the Darwin Mounds (north-east Atlantic)
Journal of the Marine Biological Association of the UK
84(3): 547-556
Publication
NeMys doc_id: 18004
Available for editors  PDF available
Meiobenthic community structure was investigated at di¡erent spatial scales (from 100 metres to centimetres) on and adjacent to a group of coral-topped sandy mounds in the bathyal north-east Atlantic (Darwin Mounds, Rockall Trough) and related to the environmental conditions in the area, mainly di¡erences in sediment organic carbon content and presence of biogenic structures. Meiobenthos abundances were similar to those observed in other deep-sea sites, with nematodes representing at least 94% of the total community. The dominant nematode genera were Microlaimus, followed by Sabatieria, Richtersia, Rhynchonema and Trefusia, together with typical deep-sea genera (e.g. Halalaimus and Acantholaimus). Multivariate analysis of nematode generic relative abundances at the di¡erent stations indicated that there was no signi¢cant in£uence on distribution resulting from large scale topographic and biogeochemical conditions around the mounds. The same genera were associated with dead tests of the xenophyophore Syringammina fragilissima and in the surrounding sediments. The vertical distribution of nematodes on and adjacent to the mound showed some unusual features, as the deeper layers of the sediments were inhabited by stilbonematids. These genera harbour ectosymbiotic, chemoautotrophic bacteria and have not previously been recorded from the deep sea. The occurrence of stilbonematids in notable numbers in the subsurface layers of the sediments in the vicinity of the Darwin Mounds provides evidence for the occurrence of anoxic microenvironments.
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2014-06-18 16:05:08Z
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Acantholaimus Allgén, 1933 (additional source)
Anticoma Bastian, 1865 (additional source)
Bathynox Bussau & Vopel, 1999 (additional source)
Camacolaimus de Man, 1889 accepted as Deontolaimus de Man, 1880 (additional source)
Choanolaimus de Man, 1880 (additional source)
Daptonema Cobb, 1920 (additional source)
Desmodora de Man, 1889 (additional source)
Eubostrichus Certes, 1899 (additional source)
Gammanema Cobb, 1920 (additional source)
Halalaimus de Man, 1888 (additional source)
Latronema Wieser, 1954 (additional source)
Leptolaimus de Man, 1876 (additional source)
Microlaimus de Man, 1880 (additional source)
Molgolaimus Ditlevsen, 1921 (additional source)
Monhystera Bastian, 1865 (additional source)
Monoposthia de Man, 1889 (additional source)
Oxystomina Filipjev, 1918 (additional source)
Paracanthonchus Micoletzky, 1924 (additional source)
Pomponema Cobb, 1917 (additional source)
Rhynchonema Cobb, 1920 (additional source)
Richtersia Steiner, 1916 (additional source)
Sabatieria Rouville, 1903 (additional source)
Syringolaimus de Man, 1888 (additional source)
Thalassoalaimus de Man, 1893 (additional source)
Trefusia de Man, 1893 (additional source)
Tricoma Cobb, 1894 (additional source)
Viscosia de Man, 1890 (additional source)
Xyala Cobb, 1920 (additional source)
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