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Johansson Clotilde Bataillard Philippe Biache Coralie Lorgeoux Catherine Colombano Stéfan Joubert Antoine Défarge Christian Faure Pierre 《Environmental science and pollution research international》2022,29(11):15966-15982
Environmental Science and Pollution Research - Permanganate is an oxidant usually applied for in situ soil remediation due to its persistence underground. It has already shown great efficiency for... 相似文献
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E Gomez M Bachelot C Boillot D Munaron S Chiron C Casellas H Fenet 《Environmental science and pollution research international》2011,19(7):2561-2569
Bioaccumulation is essential for gaining insight into the impact of exposure to organic micropollutants in aquatic fauna. Data are currently available on the bioaccumulation of persistent organic pollutants, but there is very little documentation on the bioaccumulation of pharmaceuticals and personal care products (PPCPs). The bioconcentration of selected PPCPs was studied in marine mussels (Mytilus galloprovincialis). The selected PPCPs were two organic UV filters, i.e., 2-ethylhexyl-4-trimethoxycinnamate (EHMC) and octocrylene (OC), and two benzodiazepines (BZP), i.e., diazepam (DZP) and tetrazepam (TZP). Laboratory experiments were performed in which M. galloprovincialis was exposed to these compounds either directly from water, for the less lipophilic substances (BZP) or via spiked food for lipophilic UV filters. M. galloprovincialis uptook and eliminated BZP following first-order kinetics. The biological half-life (t (1/2)) of TZP was 1.4?days, resulting in a bioconcentration factor of 64 and 99?mL?g(-1) dry weight (dw), respectively, for 2.3 and 14.5?μg?L(-1) of exposure, while the biological half-life (t (1/2)) of DZP was 0.4?days, resulting in a bioconcentration factor of 51?mL?g(-1) dw for 13.2?μg?L(-1) of exposure. The uptake of UV filter was rapid in mussels, followed by elimination within 24?h. EHMC increased from 15 to 138?ng?g(-1) dw in 1?h and decreased to 25?ng?g(-1) after 24?h for 11.9?μg?L(-1) exposure. OC reached 839?ng?g(-1) dw after 1?h and decreased to 33?ng?g(-1) after 24?h for 11.6?μg?L(-1) exposure. However, EHMC and OC were slightly accumulated in 48?h, i.e., 38 and 60?ng?g(-1) dw, respectively. 相似文献
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Galvez-Cloutier R Saminathan SK Boillot C Triffaut-Bouchet G Bourget A Soumis-Dugas G 《Environmental management》2012,49(5):1037-1053
Increasing phosphorus (P) content and decreasing water quality of Saint-Augustin Lake, Quebec City, Canada, has led to implementation
of an Integrated Watershed Management Plan to restore the lake. As a part of the plan, the effects of different restoration
techniques on lake water quality and biological community (i.e., biological compatibility) were assessed during an isolated
water enclosure study and laboratory microcosm assay, respectively. The restoration techniques include: (i) coagulation of
P by alum only (20 mg L−1), (ii) active capping of sediments using a calcite layer of 10 cm, and (iii) a complete method involving both alum coagulation
and calcite capping. The results showed that the total P (TP) was greatly decreased (76–95 %) by alum + calcite, followed
by calcite only (59–84 %). Secchi depth was 106 % greater and chlorophyll a concentrations were declined by 19–78 % in the
enclosure which received both alum and calcite. Results of the biological compatibility test showed that total phytoplankton
biomass declined by 31 % in microcosms composed of alum + calcite. No significant (P > 0.05) toxic effect was found on the survival of Daphnia magna and Hyalella azteca in both alum only and alum + calcite microcosms. Although the alum + calcite technique impaired the survival of Chironomus riparius, the midge emergence was much higher compared to alum only and control. Overall, the alum + calcite application was effective
in controlling P release from sediment and lowering water column P concentrations, and thus improving the water quality and
aquatic life of Saint-Augustin Lake. However, the TP concentrations are still higher than the critical limit (20 μg L−1) for aquatic life and the water column remained in the eutrophic state even after treatment. Increased TP concentrations,
to higher than ambient levels of the lake, in the water column of all four enclosures, due to bioturbation artefact triggered
by the platform installation, likely cause insufficient dosages of alum and/or calcite applied and reduced their effectiveness. 相似文献
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Clotilde Biard Nicolas Saulnier Maria Gaillard Jérôme Moreau 《Die Naturwissenschaften》2010,97(11):987-995
In the study of parasite-mediated sexual selection, there has been controversial evidence for the prediction that brighter
males should have fewer parasites. Most of these studies have focused on one parasite species. Our aim was to investigate
the expression of carotenoid-based coloured signals in relation to patterns of multiple parasite infections, to determine
whether colour reflects parasite load of all parasite species, or whether different relationships might be found when looking
at each parasite species independently. We investigated the relationship between bill colour, body mass and plasma carotenoids
and parasite load (feather chewing lice, blood parasite Plasmodium sp., intestinal parasites cestodes and coccidia) in the blackbird (Turdus merula). Bill colour on its own appeared to be a poor predictor of parasite load when investigating its relationships with individual
parasite species. Variation in parasite intensities at the community level was summarised using principal component analysis
to derive synthetic indexes of relative parasite species abundance and absolute parasite load. The relative abundance of parasite
species was strongly related to bill colour, plasma carotenoid levels and body mass: birds with relatively more cestodes and
chewing lice and relatively less Plasmodium and coccidia had a more colourful bill, circulated more carotenoids and were heavier. These results suggest that bill colour
more accurately reflects the relative intensities of parasite infection, rather than one-by-one relationships with parasites
or absolute parasite burden. Investigating patterns of multiple parasite infection would thus improve our understanding of
the information conveyed by coloured signals on parasite load. 相似文献
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