Seabirds as indicators of marine ecosystems

A key requirement for implementing ecosystembased management is to obtain timely information on significant fluctuations in the ecosystem However, obtaining all necessary information about physical and biological changes at appropriate temporal and spatial scales is a daunting task. Intuitively, one might assume that physical data are more important for the interpretation of ecosystem changes than biological data, but analyses of time series data suggest otherwise: physical data are more erratic and