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Impact of Roundup on the marine microbial community, as shown by an in situ microcosm experiment ArchiMer
Stachowski-haberkorn, Sabine; Becker, Beatriz; Marie, Dominique; Haberkorn, Hansy; Coroller, Louis; De La Broise, Denis.
The effects of the herbicide Roundup (R) (glyphosate) on natural marine microbial communities were assessed in a 7-day field experiment using microcosms. Bottles were maintained underwater at 6 m depth, and 10% of their water content was changed every other day. The comparison of control microcosms and surrounding surface water showed that the microcosm system tested here can be considered as representative of the natural surrounding environment. A temporal temperature gradient gel electrophoresis (TTGE) was run on 165 and 18S rDNA-amplified extracts from the whole microbial community. Cluster analysis of the 16S gel showed differences between control and treatment fingerprints for Roundup at 1 mu g L-1 (ANOSIM,p=0.055; R=0.53), and 10 mu g L-1 (ANOSIM,...
Tipo: Text Palavras-chave: Microcosm; Marine microbial communities; Glyphosate; TTGE; Flow cytometry.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/00088/19887/17546.pdf
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The Seasonal and Inter-Annual Fluctuations of Plankton Abundance and Community Structure in a North Atlantic Marine Protected Area ArchiMer
Benedetti, Fabio; Jalabert, Laëtitia; Sourisseau, Marc; Becker, Beatriz; Cailliau, Caroline; Desnos, Corinne; Elineau, Amanda; Irisson, Jean-olivier; Lombard, Fabien; Picheral, Marc; Stemmann, Lars; Pouline, Patrick.
Marine Protected Areas have become a major tool for the conservation of marine biodiversity and resources. Yet our understanding of their efficacy is often limited because it is measured for a few biological components, typically top predators or species of commercial interest. To achieve conservation targets, marine protected areas can benefit from ecosystem-based approaches. Within such an approach, documenting the variation of plankton indicators and their covariation with climate is crucial as plankton represent the base of the food webs. With this perspective, we sought to document the variations in the emerging properties of the plankton to better understand the dynamics of the pelagic fishes, mammals and seabirds that inhabit the region. For the...
Tipo: Text Palavras-chave: Iroise Sea; Plankton; MPA; Temporal variability; Community composition; Size structure.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00490/60213/63561.pdf
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