L'irrigation peut-elle être plus économe en eau ? / Quelles agricultures irriguées demain ? Répondre aux enjeux de la sé...
Impact of diuron and S-metolachlor on the freshwater diatom Gomphonema gracile: Complementarity between fatty acid profi...
...Published in The Science of the total environment
Fatty acids (FA) are crucial for the maintenance of membrane fluidity and play a central role in metabolic energy storage. Polyunsaturated fatty acids play an essential ecological role since they are key parameters in the nutritional value of algae. Pesticide impacts on fatty acid profiles have been documented in marine microalgae, but remain under...
Contrasting Effects of an Alien Worm on Benthic N Cycling in Muddy and Sandy Sediments
The North American oligochaete Sparganophilus tamesis is widespread in European freshwaters. Its ecological effects on benthic nitrogen (N) biogeochemistry were studied in two contrasting environments: the organic-rich muddy sediments of the eutrophic Mincio River (Italy) and the organic-poor sandy sediments of the oligotrophic Cazaux-Sanguinet Lak...
Impact of Zirconium on Freshwater Periphytic Microorganisms
The majority of studies on biofilms have focused on autotrophic and bacterial taxa, without considering the potential effects on biofilm grazers. In this work, we investigated the effects of realistic environmental concentrations of zirconium (Zr) on periphyton algal growth and micromeiofauna biodiversity. Glass slides were submerged in a pond for ...
Guide opérationnel pour l'évaluation du danger des sédiments contaminés : Une démarche graduée pour estimer le danger
Ce guide propose une démarche permettant d'évaluer le danger potentiel relatif aux sites d'accumulation de sédiments d'eau douce continentale (ouvrages et voies navigables), notamment en amont d'opérations d'entretien. Il est également adapté au diagnostic des causes de déclassement en mauvais état d'un site lors de suivi de qualité dans un context...
Les lacs d'Ounianga : mieux comprendre leur dynamique hydrologique et écologique par une approche interdisciplinaire / L...
Application of the water evaluation and planning model (WEAP) to the management of surface water resources in the ivory ...
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A Time-Dose Response Model to Assess Diuron-Induced Photosynthesis Inhibition in Freshwater Biofilms
Published in Frontiers in Environmental Science
Contamination by herbicides is reported in most freshwater environments. These biologically active compounds may impact the non-target biota such as benthic biofilms, at the base of the trophic chain. In agricultural watersheds, herbicides occur as pulses in the system, and traditional dose-response analysis performed at a given duration of exposur...
Experimental Warming Differentially Influences the Vulnerability of Phototrophic and Heterotrophic Periphytic Communitie...
Published in Frontiers in Microbiology
Aquatic ecosystems are generally subjected to multiple perturbations due to simultaneous or successive combinations of various natural and anthropogenic environmental pressures. To better assess and predict the resulting ecological consequences, increasing attention should be given to the accumulation of stresses on freshwater ecosystems and its ef...
Freshwater Diatoms as Indicators of Combined Long-Term Mining and Urban Stressors in Junction Creek (Ontario, Canada)
Sudbury (Ontario, Canada) has a long mining history that has left the region with a distinctive legacy of environmental impacts. Several actions have been undertaken since the 1970s to rehabilitate this deteriorated environment, in both terrestrial and aquatic ecosystems. Despite a marked increase in environmental health, we show that the Junction ...
