Wide coverage but few quantitative data: Coarse sediments in the English Channel
نویسندگان
چکیده
Offshore Wind Farms (OWFs) in the English Channel and along coast of Normandy (France) will be installed on coarse sediments, which cover about 80% seabed Channel. A BACI (Before After Control Impact) approach has been recommended by French State for each these OWFs. This provides opportunity to acquire macrofauna data assess Ecological Quality Status areas that are poorly sampled. In case Dieppe-Le Tréport (DLT) OWF, that, a sampling strategy was developed 2014–2016 establish ‘Before’ state sediment macrofauna. Results highlight DLT OWF project site includes three different type: sandy Gravel (sG), gravelly Sand (gS) medium (mS). Taxonomic Richness abundances dominated Annelids all habitats, followed Arthropods Molluscs. terms biomass, Molluscs (bivalves) predominant sG gS, while Echinoderms Polychaetes with bivalves represent high fraction biomass mS. Surface Deposit Feeders most important group abundance, Filter feeders largely dominate biomass. The benthic indices based reveal types. However, due contribution bivalve Glycymeris glycymeris habitat quality appears vary from moderate bad. comparison other similar Abundances sediments sand same order magnitude as sites. biomasses among highest so far recorded, reflecting importance this area hotspot
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ژورنال
عنوان ژورنال: Ecological Indicators
سال: 2021
ISSN: ['1470-160X', '1872-7034']
DOI: https://doi.org/10.1016/j.ecolind.2020.107010