Reference : Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in ...
Scientific journals : Article
Life sciences : Aquatic sciences & oceanology
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/91164
Organochlorine pollution in tropical rivers (Guadeloupe): Role of ecological factors in food web bioaccumulation
English
Coat, Sophie mailto [Université des Antilles et de la Guyane > Dynamique des Ecosystème Carribéens DYNECAR > Laboratoire de Biologie Marine > >]
Monti, Dominique mailto [Université des Antilles et de la Guyane > Dynamique des Ecosystème Carribéens DYNECAR > Biologie Marine > >]
Legendre, Pierre [Université de Montréal - UdeM > Sciences Biologique > > >]
Bouchon, Claude [Université des Antilles et de la Guyane > Dynamique des Ecosystème Carribéens DYNECAR > Biologie Marine > >]
Massat, Félix [laboratoire Départemental d’Analyses de la Drôme > > > >]
Lepoint, Gilles mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
2011
Environmental Pollution
Elsevier Science
159
1692-1701
Yes (verified by ORBi)
International
0269-7491
Oxford
United Kingdom
[en] stable isotope ; Organochlorines ; Bioaccumulation ; Freshwater ; food web
[en] Concentrations of organochlorine pesticides and stable isotope ratios of nitrogen and carbon were
measured in a tropical freshwater ecosystem to evaluate the contamination level of biota and examine
the bioaccumulation patterns of pollutants through the food web. Chemical analyses showed a general
and heavy contamination of the entire food web. They revealed the strong accumulation of pollutants by
juveniles of diadromous fishes and shrimps, as they re-enter the river. The role of ecological factors in the
bioaccumulation of pesticides was evaluated. Whereas the most persistent pollutants (chlordecone and
monohydro-chlordecone) were related to the organisms diet and habitat, bioaccumulation of b-HCH was
only influenced by animal lipid content. The biomagnification potential of chlordecone through the food
chain has been demonstrated. It highlighted the importance of trophic transfer in this compound bioaccumulation
process. In contrast, bioconcentration by passive diffusion from water seemed to be the
main exposure route of biota to b-HCH.
Centre Interfacultaire de Recherches en Océanologie - MARE ; Dynecar - Université Antilles Guyane
Direction Régionale de l’Environnement de la Guadeloupe
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/91164
10.1016/j.envpol.2011.02.036
journal homepage: www.elsevier.com/locate/envpol
Linked papers: Coat et al. 2009 and Lefrançois et al. 2010

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