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Monitoring of time trends in contaminant levels using a multispecies approach: Contaminant trends in Atlantic cod (Gadus morhua) and European flounder (Platichthys flesus) on the Belgian coast, 1978–1985
Misra, R.K.; Uthe, J.F.; Vynke, W. (1989). Monitoring of time trends in contaminant levels using a multispecies approach: Contaminant trends in Atlantic cod (Gadus morhua) and European flounder (Platichthys flesus) on the Belgian coast, 1978–1985. Mar. Pollut. Bull. 20(10): 500-502. hdl.handle.net/10.1016/0025-326X(89)90137-9
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
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  • Misra, R.K.
  • Uthe, J.F.
  • Vynke, W.

Abstract
    The statistical procedure of analysing for trends over time in contaminant concentrations in fish provided by the International Council for the Exploration of the Sea (ICES) 1. is univariate and 2. analyses data on only one species at a time from a given sample area, even if data on more than one species are available. In this study temporal variations in contaminants in Atlantic cod (Gadus morhua) and European flounder (Platichthys flesus) from the Belgian coast are examined at the multispecies level rather than the single species level. The ICES univariate procedure 1. has been extended to the analysis of combined data for the two (or more) species and 2. is supplemented by the multivariate analysis of covariance procedure. Not only did the two species respond differently to variations in contaminant levels with time but even within a species contaminant levels did not vary in the same direction.

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