Linking the diversity of fish assemblages to habitat structure: A study on Dogger Bank (North Sea) (original) (raw)

2007

Abstract

A research cruise on Dogger Bank in the central North Sea was conducted to investigate the influence of habitat properties on the diversity of bottom fish assemblages. In April/May 2006, 35 stations across the bank were sampled for a combined analysis of the bank's topography, hydrography, epibenthic communities and fish assemblages. The composition of epifauna as well as the assemblages of small demersal fish were obtained from a 2 m fine-mesh beam trawl, the assemblage of the larger groundfish through a standardized GOV bottom trawl as used during the International Bottom Trawl Survey. Using multivariate statistics, the assemblages of fish species are considered in relation to differences in the physical and biological structure of the local habitats. In addition, focal points in the utilization of specific habitats by individual species are characterized. Introductions

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