Data/hora: 13/06/2024 01:10:35

Provedor de dados: | 5
País: | France
Título: | Réseau de surveillance benthique – Région Bretagne. Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Quiberon
Autores: | Ehrhold, Axel; Hamon, Dominique; Chevalier, Claire; Gaffet, Jean-dominique; Caisey, Xavier; Blanchet, Aline; Alix, Anne-sophie.
Data: | 2010
Ano: | 2010
Palavras-chave: | Rebent; Baie de Quiberon; Cartographie d’habitats; Sonar latéral; Macrofaune benthique; Peuplements; Dynamique sédimentaire; Figures sédimentaires; Rebent; Quiberon bay; Mapping; Sidescan sonar; Benthic macrofauna; Communities; Bedload transport; Bedforms.
Resumo: | In 2000 Ifremer launched and coordinated the development of a monitoring strategy for the REBENT network (REseau BENThique) in order to assess the aftermath of the “Erika” oil spill which took place in December 1999. Its aim is to provide consistent baseline knowledge on coastal benthic habitats, as well as to develop a monitoring tool that detects changes at various spatial and temporal scales Sector-based seabed habitat mapping in shallow water (&lt; 50 m deep), is currently being conducted throughout Brittany's coastal waters using a combination of geoacoustic marine systems together with ground-truthing using biological grab sampling and seabed observations. The study area in the bay of Quiberon is characterised by a large array of sedimentological facies, mainly composed of sands and muds which, according to particle size, host different benthic communities : • a fine to medium slightly muddy sand Abra alba-Aponuphis bilineata community, • a sandy mud Abra alba-Ampharete finmarchica community, • a sandy mud to muddy sand Maldane glebifex community. The entrance into the bay is made through the Teignouse strait, which is subject to complex hydrodynamics that create a patchwork of strongly displaced fine and gravelly sand sediments. Here several population units, covering a small surface area, were identified. Included in the main characteristic species were Callista Chione, Travisia forbesii or Branchiostoma lanceolatum.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00281/39179/37741.pdf

http://archimer.ifremer.fr/doc/00281/39179/

Formato: | application/pdf

Fonte:

2010 Ifremer

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