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Benthic and fish aggregation inside an offshore wind farm: Which effects on the trophic web functioning? 5
Raoux, Aurore; Tecchio, Samuele; Pezy, Jean-philippe; Lassalle, Geraldine; Degraer, Steven; Wilhelmsson, Dan; Cachera, Marie; Ernande, Bruno; Le Guen, Camille; Haraldsson, Matilda; Grangere, Karine; Le Loc'H, Francois; Dauvin, Jean-claude; Niquil, Nathalie.
As part of the energy transition, the French government is planning the construction of three offshore wind farms in Normandy (Bay of Seine and eastern part of the English Channel, north-western France) in the next years. These offshore wind farms will be integrated into an ecosystem already facing multiple anthropogenic disturbances such as maritime transport, fisheries, oyster and mussel farming, and sediment dredging. Currently no integrated, ecosystem-based study on the effects of the construction and exploitation of offshore wind farms exists, where biological approaches generally focused on the conservation of some valuable species or groups of species. Complementary trophic web modelling tools were applied to the Bay of Seine ecosystem (to the 50...
Tipo: Text Palavras-chave: Marine renewable energies; Reef effect; Wind farm; Ecopath with Ecosim; Ecosystem-based approach.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00347/45843/46723.pdf
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Evaluating ecosystem functioning of a long-term dumping site in the Bay of Seine (English Channel) 5
Raoux, Aurore; Baux, Noémie; Pezy, Jean-philippe; Balay, Pierre; Lesourd, Sandric; Dauvin, Jean-claude.
The impact of 70 years of dumping harbour dredged material on ecosystem functioning was compared to a control site (non-impacted zone). A combination of indices (Shannon-Wiener diversity, Pielou evenness, BO2A, AMBI benthic indices) and modelling (Ecopath models) generated Ecological Network Analysis indices were used to detect the dumping operations effects. ENA indices showed that dumping operations appear to have a relatively limited impact on the structure and flow pattern of the local food web. In fact, only small variations between the two sites are revealed by a comparison of ENA indices between the impacted and non-impacted zone. This result could be explained by the fact that the Bay of Seine is historically characterized by a high level of human...
Tipo: Text Palavras-chave: Dredged material disposal; Harbour activities; Ecopath model; Ecological Network; Analysis; Benthic indicators; Impacted zone; Non-impacted zone; Bay of Seine.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00622/73393/72610.pdf
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Isotopic analyses, a good tool to validate models in the context of Marine Renewable Energy development and cumulative impacts 5
Raoux, Aurore; Pezy, Jean-philippe; Ernande, Bruno; Niquil, Nathalie; Dauvin, Jean-claude; Grangeré, Karine.
As part of the energy transition, the French government is planning Offshore Wind Farm (OWF) constructions in the next decades. An integrated ecosystem approach of two future OWF sites of the Eastern English Channel (Courseulles-sur-mer and Dieppe-Le Tréport) was developed to model the marine ecosystems before the OWF implementation. Such ecosystem models allow simulating the possible reef and reserve effects associated to the presence of the farm, and to character the overall changes in the food-web functioning. This holistic view of OWF effects could be replicated on other sites and form the basis of an ecosystem based management of marine renewable energies. However, to use these models for management purpose, they need to be validated. In order to do...
Tipo: Text Palavras-chave: Offshore wind farm; Ecopath with ecosim; Trophic level; Isotopic nitrogen analysis; English channel.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00611/72359/71273.pdf
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Range extension of the tanaidid Zeuxo holdichi (Bamber, 1990) along the northern coasts of France? 5
Foveau, Aurelie; Pezy, Jean-philippe; Bauxi, Noemie; Baffreau, Alexandrine; Bachelet, Quentin; Chouquet, Bastien; Dancie, Chloe; Ruellet, Thierry; Dauvin, Jean-claude.
The tanaidacean crustacean, Zeuxo holdichi was first described from Arcachon Bay, France, by Bamber in 1990. Since then, this species has been recorded several times in Europe, from Iberian Peninsula to Germany. In this present study, we report new records of this species along the northern coasts of France bordering the English Channel. It is hypothesized that Z. holdichi is being spread because of aquaculture activities.
Tipo: Text Palavras-chave: Crustacea; Tanaids; Zeuxo holdichi; English Channel; Northern distribution.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00451/56234/57794.pdf
Registros recuperados: 4
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