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| Gamain, Perrine; Feurtet-mazel, Agnes; Maury-brachet, Regine; Auby, Isabelle; Pierron, Fabien; Belles, Angel; Budzinski, Helene; Daffe, Guillemine; Gonzalez, Patrice. |
| Dwarf eelgrasses (Zostera noltei) populations have decreased since 2005 in Arcachon Bay (southwest France). Various stressors have been pointed out, however the role of xenobiotics like pesticides or copper (Cu) and of parameters like water temperature warming have not yet been explored. To determine their impact, Z. noltei individuals were collected in a pollution-free site and transferred to the laboratory in seawater microcosms. This dwarf eelgrass was exposed to a pesticide cocktail and copper, alone or simultaneously, at temperatures (10 °C, 20 °C, 28 °C) representative of different seasons. After a two-week contamination, leaf growth, leaf bioaccumulation of Cu, and differential expression of target genes were studied. Eelgrasses bioaccumulated Cu... |
| Tipo: Text |
Palavras-chave: Zostera noltei; Arcachon Bay; Pesticides; Copper; Cellular impacts. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00407/51831/58536.pdf |
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| Auby, Isabelle; Bost, Charles-andré; Budzinski, Helene; Dalloyau, Sebastien; Desternes, Amandine; Belles, Angel; Trut, Gilles; Plus, Martin; Pere, Caroline; Couzi, Laurent; Feigne, Claude; Steinmetz, Julien. |
| While they had previously presented a hight stability, unlike in many coastal sites worldwide, eelgrass beds (Zostera noltii and Zostera marina) of Arcachon Bay have declined sharply since the 2000s. Various causes have been invoked to explain this phenomenon: climate anomalies, disease, over-grazing by herbivorous birds, contamination by herbicides, mechanical destruction during clam fishing. A multidisciplinary study was set up to study the possible effect of these factors, by putting into perspective the history of the seagrass beds and the temporal evolution of these parameters. After a chapter dealing with recent trends (2007-2010) of seagrasses in the Bay of Arcachon, the results relative to the various hypotheses are presented. These results allow... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00054/16507/14018.pdf |
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| Fauvelle, Vincent; Belles, Angel; Budzinski, Helene; Mazzella, Nicolas; Plus, Martin. |
| The work presented here aims at comparing monitoring of S-metolachlor, the major pesticide in use in the Arcachon Bay (South West of France, transitional coastal area), by chemical analysis (monthly passive sampling) and contaminant dissipation modeling from sources (Mars-2D model). The global strategy consisted in i) identifying the major sources of S-metolachlor to the Bay, ii) monitoring these sources for 12 months, and iii) comparing modeled data in the Bay based on measured inputs, to chemical measurements made inside the Bay along with the 12-month source monitoring. Results first showed that the major S-metolachlor surface inputs to the Arcachon Bay are mainly from one single source. Modeled and measured data were in good agreement at 5 sites in the... |
| Tipo: Text |
Palavras-chave: Passive sampling; POCIS; Mars-2D; Contaminant; Monitoring; Coastal area; Pesticides; S-metolachlor. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00445/55627/57334.pdf |
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| Fidenci, Marion; Kallerhoff, J.; Silvestre, J.; Merlina, G.; Buffan-dubau, Evelyne; Belles, Angel; Auby, Isabelle; Budzinski, Helene; Grillas, Patrick; Elger, Arnaud. |
| Ce poster présente les méthodes de terrain et de laboratoire mises en oeuvre pour étudier l'effet des herbicides sur le déclin des herbiers de zostères |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00152/26288/24371.pdf |
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