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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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Spatial scale and habitat-dependent diversity patterns in nematode communities in three seepage related sites along the Norwegian Sea margin Van Gaever, S.; Raes, M.; Pasotti, F.; Vanreusel, A. (2010). Spatial scale and habitat-dependent diversity patterns in nematode communities in three seepage related sites along the Norwegian Sea margin. Mar. Ecol. (Berl.) 31(1): 66-77. https://dx.doi.org/10.1111/j.1439-0485.2009.00314.x In: Marine Ecology (Berlin). Blackwell: Berlin. ISSN 0173-9565; e-ISSN 1439-0485, meer Ook verschenen in: (2010). The roles of habitat heterogeneity in generating and maintaining biodiversity on continental margin: a contribution to the Census of Marine Life. Wiley Interscience: [s.l.]. 1-260 pp., meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 156931 [ download pdf ]

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Trefwoorden

ANE, Norwegian Sea Aquatic communities > Benthos > Meiobenthos Seeps Species diversity Halomonhystera disjuncta (Bastian, 1865) Andrássy, 2006 [WoRMS]; Nematoda [WoRMS]; Terschellingia longicaudata de Man, 1907 [WoRMS]; Terschellingia longicaudata de Man, 1907 [WoRMS] ANE, Norwegian Sea [Marine Regions] Marien/Kust

Author keywords

Cold seeps; cryptic species; Halomonhystera disjuncta; meiobenthos; Nematoda; Norway; Norwegian Sea; Terschellingia longicaudata

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Auteurs		Top
Van Gaever, S., meer Raes, M., meer Pasotti, F., meer Vanreusel, A., meer

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Abstract

Assessing the relative contribution of local diversity to regional biodiversity may be the key to understanding large-scale and even global patterns in species diversity. Here, the contribution of habitat heterogeneity of cold seeps at three spatial scales [micro-scale (ms), macro-scale (10 to 100s of ms), and mega-scale (10 to 100s of km)] to the total nematode biodiversity (genus level) along the Norwegian continental margin is evaluated. Due to the development of higher resolution bathymetry and increased bottom sampling in recent years, continental margins, once regarded as monotonous landscapes, are now acknowledged to have a high degree of habitat complexity and diversity. By calculating the additive partitioning of gamma diversity in alpha and beta fractions, we examined to what extent habitat diversity of seep sites significantly increases the nematode genus composition and diversity at different spatial scales. Siboglinidae patches and control sediments yielded comparably high levels of nematode genus richness. They exhibited low turnover rates within and across the different seep sites. In contrast, the bacterial mats at Håkon Mosby Mud Volcano (HMMV) and the reduced sediments at the Nyegga pockmarks harboured genus-poor nematode communities with an equally high dominance of one or two species, which were different for each seep. Different habitats, in particular at the HMMV, contributed significantly to the seep nematode richness. This study demonstrates that the presence of distinct habitat types within multiple seep sites contributes to the high diversity of nematode communities inhabiting the seeps in the Norwegian deep sea.

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