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Trends in Scottish research-vessel catches of various fish species in the North Sea, 1922-1971
Richards, J.; Armstrong, D.W.; Hislop, J.R.G.; Jermyn, A.S.; Nicholson, M.D. (1978). Trends in Scottish research-vessel catches of various fish species in the North Sea, 1922-1971. Rapp. et Proc.-Verb. Cons. Int. Explor. Mer 172: 211-224
In: Rapports et Procès-Verbaux des Réunions du Conseil Permanent International pour l'Exploration de la Mer. Conseil Permanent International pour l'Exploration de la Mer: Copenhague. ISSN 0074-4336, more

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Keywords
    Commercial species; Fishery statistics; Fishery surveys; Marine

Authors  Top 
  • Richards, J.
  • Armstrong, D.W.
  • Hislop, J.R.G.
  • Jermyn, A.S.
  • Nicholson, M.D.

Abstract
    This paper presents an analysis of data collected on several species of demersal fish caught in Scottish research-vessel trawling surveys in the North Sea during the period 1922-1971. The purpose of the analysis was to determine whether the data (1) reveal long-term changes in indices of abundance, (2) show changes in size composition with time, and (3) can be used to demonstrate whether there are correlations between the indices of abundance for the various species.

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