La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Seasonal hypoxia and models of benthic response in a Texas bay
Auteurs :	C. Ritter, Auteur ; P. A. Montagna, Auteur
Type de document :	Article
Dans :	Estuaries (22(1) MAR 1999)
Article en page(s) :	7-20
Résumé :	Hypoxia occurs during summer in the southeastern region of Corpus Christi Bay, Texas. The objectives of this study were to identify potential causes of recurrent hypoxic events, to determine hypoxic effects on benthic macroinfauna, and to develop models of benthic response. Long-term and short-term hydrographic surveys were performed, and macroinfaunal samples were collected from normoxic and hypoxic regions of the bay. Hypoxia occurred in seven of the nine summers sampled (1988 to 1996). In 1994, the hypoxic event persisted for approximately 3 wk. Hypoxic events were associated with water column stratification where the difference between bottom and surface salinity was as high as 7.2 parts per thousand and averaged 4.1 parts per thousand. The salinity difference is surprising because water column stratification is not expected in shallow (

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