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Soft bottom community structure and diversity in Kongsfjorden (Svalbard), Reports on Polar and Marine Research.

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Laudien, J. , Herrmann, M. and Arntz, W. (2004): Soft bottom community structure and diversity in Kongsfjorden (Svalbard), Reports on Polar and Marine Research. , The coastal ecosystem of Kongsfjorden, Svalbard : synopsis of biological research performed at the Koldewey Station in the years 1991 - 2003 / [Alfred-Wegener-Institut für Polar- und Meeresforschung]. Ed. by Christian Wiencke. Bremerhaven : Alfred-Wegener .
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Abstract:

The macrozoobenthos (5-30m depth) of Kongsfjord (Svalbard) was quantita-tively investigated by a SCUBA-diver operated airlift system. 63 taxa were found, 30 of which were not reported for Kongsfjord and seven not for Sval-bard before. Suspensivorous or surface and sub-surface detritivorous poly-chaetes and deposit-feeding amphipods were dominant. Only 12 of 45 spe-cies and additional 18 families inhabited the complete depth range (the poly-chaetes Dipolydora quadrilobata, Chaetozone setosa, Euchone analis, Lum-brineris sp., Ophelina sp., Scoloplos armiger, Spio armata, Travisia forbesii, the bivalves Axinopsida orbiculata and Crenella decussata, and the Opisto-branchia Cylichna sp. Clustering the samples showed a significant difference (ANOSIM) between the shallow station (5m) and the rest, the latter formed two subgroups the medium depth stations (10m, 15m, 20m) and the deeper sta-tions (25m, 30m). The biomass ranged from 3.5 to 25.0 g ash free dry mass m-2 and Shannon diversity was 2.06 (SD 0.12). Observed differences in diver-sity are discussed in the frame of the intermediate disturbance hypothesis.

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