Prédation par les limicoles de la macrofaune intertidale en baie de Saint-Brieuc. Projet EUPHORBE.

The object of this report is to provide an estimation, on an annual basis, of the macrozoobenthic biomass consumed by the major wading birds staying in the bay of Saint-Brieuc (Brittany, Western Channel). Historical information was first reviewed and then updated throughout the winter 1987-88, by field observations (counts of birds, birds activities ... ). Six species account for most of the predation on macrofauna, and are thus studied with more detail. A specific survey is devoted to oystercatcher (Haematopus ostralegus), because of its feeding on an exploited stock of the edible cockle (Cerastoderma edule).