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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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| Proença, Barbara; Romuald, Marine; Auby, Isabelle; Ganthy, Florian; Sottolichio, Aldo; Michalet, Richard. |
| Ecosystem engineering effects of dominant species on habitats and consequently on other species are likely to propagate through time at longer distance than the close neighbourhood. Such effects are important to disentangle from short-term biotic effects, especially in biological invasions, as engineering can explain changes in invasion rates over the course of the invasion. We assessed the contribution and spatial dynamics of ecosystem engineering effects of a strong invader, the cordgrass Spartina anglica, on Zostera noltei, a foundation seagrass species of muddy intertidal systems in Europe. Z. noltei transplants were grown at different positions along transects crossing intact S. anglica patches, cut patches and nearby bare sediment on tidal flats in... |
| Tipo: Text |
Palavras-chave: Biological invasion; Competition; Ecosystem engineer; Spartina anglica; Zostera noltei. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00507/61875/67507.pdf |
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| Soissons, Laura M.; Haanstra, Eeke P.; Van Katwijk, Marieke M.; Asmus, Ragnhild; Auby, Isabelle; Barille, Laurent; Brun, Fernando G.; Cardoso, Patricia G.; Desroy, Nicolas; Fournier, Jerome; Ganthy, Florian; Garmendia, Joxe-mikel; Godet, Laurent; Grilo, Tiago F.; Kadel, Petra; Ondiviela, Barbara; Peralta, Gloria; Puente, Araceli; Recio, Maria; Rigouin, Loic; Valle, Mireia; Herman, Peter M. J.; Bouma, Tjeerd J.. |
| Seagrass meadows form highly productive and valuable ecosystems in the marine environment. Throughout the year, seagrass meadows are exposed to abiotic and biotic variations linked to (i) seasonal fluctuations, (ii) short-term stress events such as, e.g., local nutrient enrichment, and (iii) small-scale disturbances such as, e.g., biomass removal by grazing. We hypothesized that short-term stress events and small-scale disturbances may affect seagrass chance for survival in temperate latitudes. To test this hypothesis we focused on seagrass carbon reserves in the form of starch stored seasonally in rhizomes, as these have been defined as a good indicator for winter survival. Twelve Zostera noltei meadows were monitored along a latitudinal gradient in... |
| Tipo: Text |
Palavras-chave: Carbon reserves; European Atlantic coast; Latitude; Resilience; Zostera noltei; Climate setting; Stress events. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00423/53420/54308.pdf |
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| Auby, Isabelle; Oger-jeanneret, Helene; Gouillieux, Benoît; Grall, Jacques; Janson, Anne-laure; Maguer, Marion; Rigouin, Loic; Rollet, Claire; Sauriau, Pierre - Guy; Trut, Gilles. |
| This report is an update of the previous WFD monitoring protocols for seagrass beds on the French coasts (Channel, Atlantic). The different steps of field sampling and laboratory measurements are described. |
| Tipo: Text |
Palavras-chave: Directive Cadre sur l’eau; Herbiers; Zostera noltei; Zostera marina; Protocoles de suivi; Water Framework Directive; Seagrass beds; Zostera noltei; Zostera marina; Monitoring protocols.. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00471/58250/60782.pdf |
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