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An evaluation of the stock structure of North Sea cod, haddock, and whiting since 1920, together with a consideration of the impacts of fisheries and predation effects on their biomass and recruitment
Pope, J.G.; Macer, C.T. (1996). An evaluation of the stock structure of North Sea cod, haddock, and whiting since 1920, together with a consideration of the impacts of fisheries and predation effects on their biomass and recruitment. ICES J. Mar. Sci./J. Cons. int. Explor. Mer 53: 1157-1169
In: ICES Journal of Marine Science. Academic Press: Oxford. ISSN 1054-3139, more
Peer reviewed article

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Keywords
    Biomass; Marine fisheries; Mortality; Population dynamics; Predation; Recruitment; Stock assessment; Time series analysis; Gadus morhua Linnaeus, 1758 [WoRMS]; Melanogrammus aeglefinus (Linnaeus, 1758) [WoRMS]; Merlangius merlangus (Linnaeus, 1758) [WoRMS]; ANE, North Sea [gazetteer]; Marine
Author keywords
    extended time series, fishing mortalities, multispecies assessment, predation rate, stock/recruitment

Authors  Top 
  • Pope, J.G.
  • Macer, C.T.

Abstract
    Time series of population-at-age and fishing mortality rate estimates are extended back to 1921 for North Sea cod, and to 1920 for North Sea haddock and whiting. The extended time series are used to examine the ability of various factors to explain the changes in biomass and recruitment of these roundfish stocks during much of the twentieth century. In particular, the possible impacts of fishing pressure and multispecies interactions are explored.

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