214 resultados para Biological specimens

em Plymouth Marine Science Electronic Archive (PlyMSEA)


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Diagnostic characters in flat fishes. Development of the egg in flat fishes & pipe fishes. A piebald plaice. Growth & distribution of young food-fishes. Notes on rare or interesting specimens.

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The rationale behind the use of analyses of estuarine organisms to assess levels of heavy-metal contamination is described and compared with alternative methods such as the analysis of waters or sediments. Based on field observations in United Kingdom estuaries and on evidence from the literature, an assessment is made of the suitability of 17 species as the indicators of metals and metalloids including Ag, As, Cd, Co, Cr, Cu, Hg, Ni, Se, Sn, Pb and Zn.