La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Biogeographical Patterns of Marine Benthic Macroinvertebrates Along the Atlantic Coast of the Northeastern USA
Auteurs :	Stephen S. Hale, Auteur
Type de document :	Article
Dans :	Estuaries and Coasts (33(5) SEP 2010)
Article en page(s) :	1039-1053
Résumé :	The biogeography of marine benthic macroinvertebrates of US Atlantic estuaries and inshore coastal areas from Delaware Bay north to Passamaquoddy Bay was studied to compare recent data with historical biogeographic studies, define physical-chemical factors affecting species' distributions, and provide information for calibrating benthic indices of environmental condition. Five years (2000-2004) of data from 614 non-polluted, soft-bottom stations from the National Coastal Assessment were analyzed. Multidimensional scaling done on Bray-Curtis similarity matrices of species' relative abundance (547 species) suggested seven subregions: two based on salinity (oligohaline, mesohaline) and five based on latitude. Species' distribution patterns for stations with salinities >= 18 (n = 558) were strongly influenced by latitude; Cape Cod was a clear faunal transition zone (R = 0.92, p

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