title: Active biomonitoring for assessing effects of metal polluted sediment resuspension on gammarid amphipods during fluvial traffic.
abstract: The resuspension of polluted sediments by boat traffic could release substantial amounts of metals to the water column, affecting at the same time their bioavailability. In order to characterize the impact of sediment resuspensions on biota, caged amphipods have been deployed on three different channelized watercourses in Northern France. Firstly, the biological responses of transplanted freshwater gammarid amphipods, Gammarus fossarum, described by trace metal accumulation, feeding and reproduction activities were quite similar for the three water courses despite the differences of metal contamination and navigability. Secondly, the concentrations of metals accumulated in gammarids never exceeded the contamination thresholds previously defined for Co, Cu, Cr and Zn. Values were in the same order of magnitude whatever the studied site despite: (i) large differences noticed in the sediment quality and (ii) some concentrations in the overlying waters exceeding the Environmental Quality Standards (EQS) defined by the Water Framework Directive. Conversely, Pb was highly bioaccumulated with values systematically exceeding the threshold value whatever the site. Therefore, the impact of navigation cannot be proved and the difference between the 3 monitoring periods is rather attributed to environmental variability, probably linked to the seasonality. Moreover, this study also confirms that organisms sampled from a local population in the vicinity of the three studied watercourses could be used as test organisms, leading to similar results than the ones obtained with reference gammarids initially used for developing all the biological responses. This would simplify and then promote the development of studies based on gammarid amphipod, G. fossarum, as bioindicators.
authors.affiliation: University Lille 1, Laboratory LASIR - UMR CNRS 8516, Cité Scientifique, 59655 Villeneuve d'Ascq, France; CEREMA, Direction Territoriale Nord-Picardie, 151 rue de Paris, 02100 Saint-Quentin, France.
authors.forename: E
authors.initials: E
authors.lastname: Prygiel
authors.affiliation: University Lille 1, Laboratory LASIR - UMR CNRS 8516, Cité Scientifique, 59655 Villeneuve d'Ascq, France.
authors.forename: G
authors.initials: G
authors.lastname: Billon
authors.affiliation: IRSTEA, UR MAEP Ecotoxicology, 5 rue de la Doua, 69626 Villeurbanne Cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: François
authors.affiliation: University Lille 1, Laboratory LASIR - UMR CNRS 8516, Cité Scientifique, 59655 Villeneuve d'Ascq, France.
authors.forename: D
authors.initials: D
authors.lastname: Dumoulin
authors.affiliation: IRSTEA, UR MAEP Ecotoxicology, 5 rue de la Doua, 69626 Villeurbanne Cedex, France.
authors.forename: A
authors.initials: A
authors.lastname: Chaumot
authors.affiliation: IRSTEA, UR MAEP Ecotoxicology, 5 rue de la Doua, 69626 Villeurbanne Cedex, France. Electronic address: olivier.geffard@irstea.fr.
authors.forename: O
authors.initials: O
authors.lastname: Geffard
authors.affiliation: University Lille 1, Laboratory LASIR - UMR CNRS 8516, Cité Scientifique, 59655 Villeneuve d'Ascq, France.
authors.forename: J
authors.initials: J
authors.lastname: Criquet
authors.affiliation: University Lille 1, Laboratory LASIR - UMR CNRS 8516, Cité Scientifique, 59655 Villeneuve d'Ascq, France; Agence de l'Eau Artois-Picardie, 200 rue Marceline, 59500 Douai, France.
authors.forename: J
authors.initials: J
authors.lastname: Prygiel
mesh_terms: D016573:Agrochemicals / Q000737:chemistry / Q000494:pharmacology; D033304:Amphipoda / Q000187:drug effects* / Q000254:growth & development; D000818:Animals; D001682:Biological Availability; D004784:Environmental Monitoring; D005602:France / Q000453:epidemiology; D019015:Geologic Sediments / Q000737:chemistry*; D006801:Humans; D008670:Metals / Q000032:analysis; D045483:Rivers / Q000737:chemistry*; D012767:Ships; D014131:Trace Elements; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D016573:Agrochemicals; D008670:Metals; D014131:Trace Elements; D014874:Water Pollutants, Chemical
keywords: Biomarker; Gammarid amphipod; Metals; Navigation; Sediment resuspension