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A series of North Sea benthos surveys with trawl and headline camera
Dyer, B.M.; Fry, W.G.; Fry, P.D.; Cranmer, G.J. (1982). A series of North Sea benthos surveys with trawl and headline camera. J. Mar. Biol. Ass. U.K. 62(2): 297-313
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Dyer, B.M.
  • Fry, W.G.
  • Fry, P.D.
  • Cranmer, G.J.

Abstract
    During a series of North Sea demersal fish surveys, a headline camera was used to photograph the sea-bed at intervals of 1 min, throughout the duration of 60 min trawls. A successful series of underwater photographs were obtained at 119 stations throughout the North Sea. In addition, the benthos caught at 317 stations was recorded. A total of ca. 30 species could be identified on the underwater photographs, and of these ten species were sufficiently common or locally abundant for estimates of local population densities to be made. Distributions throughout the North Sea based on specimens trawled and specimens photographed were compared.

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