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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Species diversity and distribution within the deep-sea nematode genus Acantholaimus on the continental shelf and slope in Antarctica De Mesel, I.G.; Hee Joong Lee; Vanhove, S.; Vincx, M.; Vanreusel, A. (2006). Species diversity and distribution within the deep-sea nematode genus Acantholaimus on the continental shelf and slope in Antarctica. Polar Biol. 29(10): 860-871. dx.doi.org/10.1007/s00300-006-0124-7 In: Polar Biology. Springer-Verlag: Berlin; Heidelberg. ISSN 0722-4060; e-ISSN 1432-2056, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 272718 [ download pdf ]

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Trefwoorden

Distribution Species diversity Topographic features > Submarine features > Continental shelves Topographic features > Submarine features > Continental slope Acantholaimus Allgén, 1933 [WoRMS] PS, Antarctica [Marine Regions] Marien/Kust

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Auteurs		Top
De Mesel, I.G., meer Lee, H.J. Vanhove, S., meer	Vincx, M., meer Vanreusel, A., meer

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Abstract

Species diversity and distribution -in relation with biogeography, bathymetry and environmental characteristics- within the genus Acantholaimus were investigated on the shelf and slope (182-2,009 m) in the Weddell Sea (Kapp Norvegia and Vestkapp) and near the Antarctic Peninsula (Drake Passage and Bransfield Strait). The occurrence of the otherwise typical deep-sea genus Acantholaimus in high densities and diversity on the continental shelf is a unique feature of the Southern Ocean. Fifty-five Acantholaimus species (morpho-types) were distinguished in our study area, of which 39 were found on the shelf. The Acantholaimus communities were characterised by a high number of congeneric species and the presence of many rare species, similar to typical deep-sea communities. Fourteen species had a distribution extending from the shelf to the lower slope. High local and regional diversity was obvious and a considerable level of endemism was suggested. A negative impact of chlorophyll a concentrations, reflecting the availability of phytoplankton, was found on the Acantholaimus densities and species diversity.

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