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Are growth and density quantitative indicators of essential fish habitat quality? An application to the common sole Solea solea nursery grounds ArchiMer
Gilliers, Camille; Le Pape, Olivier; Desaunay, Yves; Morin, Jocelyne; Guerault, Daniel; Amara, Rachid.
Bio-indicators were measured on juvenile fish to assess the quality of eight coastal and estuarine nursery grounds in the Eastern English Channel and in the Bay of Biscay during 3 years. Growth (size and otolith daily increment width), body condition (morphometric index) and abundance of juvenile common soles were analysed together with xenobiotic concentrations (heavy metals and organic contaminants). Condition indices displayed important variations and did not allow relevant estimation of environmental quality. On the contrary, growth and density indicators showed good steadiness above years but varied among sites. In spite of difficulties of interpreting these indicators on such a meso-scale approach, analyses highlighted the estuaries of Seine and...
Tipo: Text Palavras-chave: Flatfish juvenile; Essential fish habitat quality; Quantitative bio indicators.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2016.pdf
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