La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Relationship between waterfowl and the seagrass Ruppia maritima in a southwestern Atlantic coastal lagoon
Auteurs :	A. Bortolus, Auteur ; O. O. Iribarne, Auteur ; M. M. Martinez, Auteur
Type de document :	Article
Dans :	Estuaries (21(4B) DEC 1998)
Article en page(s) :	710-717
Résumé :	We evaluated the distribution of waterfowl in relation to a seagrass (Ruppia maritima) patch, to infauna, and on its relationship with substrate characteristics. An experiment performed in the Mar Chiquita coastal lagoon (37 degrees 46'S, 57 degrees 27'W; Argentina), was used to evaluate the effect of herbivory on widgeon grass, R maritima control plots of equal size, located between bird exclosures, were exposed to herbivory. The experiment ran for 31 d, starting on December 1, 1994. Censuses showed that black-necked swan ((x) over bar = 50 birds ha(-1).

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