Abstract
The definitions of the notions ‘bio-indicator’ and ‘water quality’ are critically reviewed; it is shown that both have been used ambiguously.
The quality of the Wadden Sea is discussed using a number of indicators for pollution effects; the Wadden Sea is now an unsuitable environment for a number of marine mammals, and, to a lesser extent, for some bird species. It cannot be shown whether or not this pollution has any effect on r-selective species.
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De Wolf, P. Bio-indicators and the quality of the Wadden Sea. Environ Monit Assess 3, 355–367 (1983). https://doi.org/10.1007/BF00396230
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DOI: https://doi.org/10.1007/BF00396230