Data/hora: 09/06/2024 02:42:30

Provedor de dados: | 5
País: | France
Título: | Influence of oyster culture practices and environmental conditions on the ecological status of intertidal mudflats in the Pertuis Charentais (SW France): A multi-index approach
Autores: | Bouchet, Vincent; Sauriau, Pierre-guy.
Data: | 2008-11
Ano: | 2008
Palavras-chave: | Exposed/sheltered; Seasonal variations; Benthic macrofauna; Biotic index; Intertidal mudflats; Oyster farming practices.
Resumo: | The ecological quality status (EcoQ) of intertidal mudflats constrained by Pacific oyster farming was assessed by single (H', AMBI, BENTIX and BOPA) and multimetric (M-AMBI and average score) index approaches in the Pertuis Charentais (SW France). Fifteen sampling stations were monitored seasonally for sedimentological features and macrozoobenthos in 2004. Sediments affected by oyster biodeposits showed organic matter enrichment, and sediments from off-bottom culture sites had higher organic matter contents and lower redox potentials than sediments from on-bottom culture sites. Biotic indices consistently registered responses of macrozoobenthos to organic enrichment but there was only partial agreement between single index-derived EcoQs. The average score was better than M-AMBI and single indices for determining EcoQs. Accordingly, oyster farming alters intertidal macrozoobenthic assemblages moderately, and off-bottom cultures cause more disturbance than on-bottom cultures. Hydrodynamics and seasons may interact with culture practices in smothering/strengthening biodeposition-mediated effects through dispersal/accumulation of biodeposits.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2008/publication-4650.pdf

DOI:10.1016/j.marpolbul.2008.07.010

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/4650/
Formato: | application/pdf
Fonte: | Marine Pollution Bulletin (0025-326X) (Elsevier), 2008-11 , Vol. 56 , N. 11 , P. 1898-1912
Fonte: | 2008 Elsevier Ltd All rights reserved.