La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The response of fishes to submerged aquatic vegetation complexity in two ecoregions of the mid-atlantic bight: Buzzards Bay and Chesapeake Bay
Auteurs :	J. C. Wyda, Auteur ; L. A. Deegan, Auteur ; J. E. Hughes, Auteur ; M. J. Weaver, Auteur
Type de document :	Article
Dans :	Estuaries (25(1) FEB 2002)
Article en page(s) :	86-100
Résumé :	Estuarine seagrass ecosystems provide important habitat for fish and invertebrates and changes in these systems may alter their ability to support fish. The response of fish assemblages to alteration of eelgrass (Zostera marina) ecosystems in two ecoregions of the Mid-Atlantic Bight (Buzzards Bay and Chesapeake Bay) was evaluated by sampling historical eelgrass sites that currently span a broad range of stress and habitat quality. In two widely separated ecoregions with very different fish faunas, degradation and loss of submerged aquatic vegetation (SAV) habitat has lead to declines in fish standing stock and species richness. The abundance, biomass, and species richness of the fish assemblage were significantly higher at sites that have high levels of eelgrass habitat complexity (biomass > 100 wet g m(-2); density > 100 shoots m(-2)) compared to sites that have reduced eelgrass (biomass

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