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Compared sensitivity of species, genera and families of Molluscs to biodegradable pollution

Published online by Cambridge University Press:  01 February 2009

J. Mouthon  and
S. Charvet
J. Mouthon
Affiliation:
Cemagref, 3bis quai Chauveau, CP 220, F - 69336 Lyon Cedex 09, France
S. Charvet
Affiliation:
Cemagref, 3bis quai Chauveau, CP 220, F - 69336 Lyon Cedex 09, France
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Abstract

A scale of sensitivity of mollusc species to biodegradable pollution was proposed in a previous paper (Mouthon 1996). Using these results as a basis, and introducing supplementary elements in a correspondence analysis, we have been able to formulate a scale of sensitivity of mollusc genera and families. A quantification of information lost when using genus or family-level rather than species-level identification was carried out by calculating the Euclidean distances between each species and the gravity centre of the genus and family to which it belongs. The results obtained showed that the genus-level identification can constitute an acceptable compromise for using molluscs as water quality indicators in biomonitoring.

Keywords

molluscslevel of taxonomic identificationpollutionriversmollusquesniveau de déterminationpollutioncours d'eau
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 35 , Issue 1 , March 1999 , pp. 31 - 39
Copyright
© Université Paul Sabatier, 1999

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