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Demersal fish diversity of the isolated Rockall plateau compared with the adjacent west coast shelf of Scotland Neat, F.; Campbell, N. (2011). Demersal fish diversity of the isolated Rockall plateau compared with the adjacent west coast shelf of Scotland. Biol. J. Linn. Soc. 104(1): 138-147. https://dx.doi.org/10.1111/j.10958312.2011.01699.x In: Biological Journal of the Linnean Society. Academic Press: London; New York. ISSN 0024-4066; e-ISSN 1095-8312

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Beschikbaar in	Auteurs
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Trefwoorden

Composition > Community composition Nets > Fishing gear > Fishing nets > Trawl nets > Bottom trawls Water bodies > Oceans > Marginal seas > Shelf seas Marien/Kust

Author keywords

bottom trawl survey; community structure; isolated shelf sea

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Auteurs		Top
Neat, F. Campbell, N.

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Abstract

This study compares the diversity of the demersal fish assemblage of an isolated shelf sea, the Rockall plateau, with that of the nearest adjacent continental shelf sea ecosystem, the west coast of Scotland. Bottom trawl surveys were carried out between 1986 and 2008 on the Rockall plateau and the adjacent shelf sea to the west of Scotland. All demersal fish were identified and counted. Analyses of species richness and abundance were undertaken. The fish assemblage of the Rockall plateau was less diverse and the proportional representation of species was markedly different. A number of species common at Rockall were rare on the west coast shelf and, in general, there were fewer common and temporally stable species and more rare and ephemeral species at Rockall. Some species absent from Rockall have life-history stages associated with inshore habitat. The Rockall plateau fish assemblage can be described as an impoverished subset of the north-west European shelf sea fish assemblage. It is likely that there are constraints on diversity imposed by the relatively small area of the Rockall plateau and its degree of isolation by depth, distance and ocean currents.bottom trawl

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