SS4.13 Water Quality of Lakes, Rivers and Coastal Zones
Date: Thursday, June 13, 2002
Time: 10:30:00 AM
Location: Carson B
 
PointD, LCABIE Universite de Pau et des Pays de l'Adour - Helioparc, Pau, France, david.point@univ-pau.fr
Bareille, G, , LCABIE Universite de Pau et des Pays de l'Adour - Helioparc, Pau, France, bareile@univ-pau.fr
Stoichev, T, , LCABIE Universite de Pau et des Pays de l'Adour - Helioparc, Pau, France, stoichev@bgnet.bg
Amouroux, D, , LCABIE Universite de Pau et des Pays de l'Adour - Helioparc, Pau, France, david.amouroux@univ-pau.fr
Budzinski, H, , LPTC Universite de Bordeaux I, Talence, France, h.budzinski@lptc.u-bordeaux.fr
Lespes, G, , LCABIE Universite de Pau et des Pays de l'Adour, Pau, France, gaetane.lespes@univ-pau.fr
Etcheber, H, , DGO Universite de Bordeaux I, Talence, France, etcheber@geocean.u-bordeaux.fr
Donard, O, F, LCABIE Universite de Pau et des Pays de l'Adour - Helioparc, Pau, France, olivier.donard@univ-pau.fr
 
IDENTIFICATION AND QUANTIFICATION OF ORGANIC AND INORGANIC CONTAMINANTS FLUXES RELATED TO THE ANTHROPOGENIC PRESSURE IN THE ADOUR ESTUARY
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The Adour estuary (Southwestern France) have an economy based on tourism, fishery, industry and harbor associated activities. The GIS-ECOBAG program is an integrated scientific pluridisciplinary approach of the environment which consist in identifying and quantifying in terms of water quality degradation the local human pressure and its impact on the ecosystem. This present work is an exploration phase of the Adour estuary combining an environmental assessment of its overall contamination state (PAH, PCB, Cd, Cu, Zn, Ni, Pb, Ag, and Hg-Sn speciation), and a biogeochemical investigation related to the transfer and biological impact of those contaminants according to the hydrological conditions. A large scale sediments monitoring was first realized in 2000, allowing the identification of local urban and industrial discharge points (23 stations).This step was followed in 2001 by a periodic seasonal monitoring of contaminants concentrations in water samples (35 stations). These concentrations associated with discharge flow measurements were combined to establish net fluxes into the estuarine environment. These fluxes are compared with upstream inputs from the whole drainage basin and discussed in terms of specific contaminantsanthropogenic source identification.