Year: 1987
Type: article
Abstract: Fish population densities were measured at various d~stances from 2 large colonies of double-crested cormorants Phalacrocorax auritus to test the hypothesis that seabirds deplete prey close to their colonies.Fish densities were significantly lower in bays used by cormorants for feeding than in those outside their foraging range.Our findings provide direct evidence for prey depletion, and support Ashmole's (1963) hypothesis that seabird populations are limited by food supplies during the breeding season.
Source: Marine Ecology Progress Series
DOI: 10.3354/meps040205
Authors: VL Birt, TP Birt, D Goulet, DK Cairns, WA Montevecchi
Institution: Memorial University of Newfoundland
Language: English
Topic: Avian ecology and behavior
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
SDG: Life below water
Open Access status: bronze
OpenAlex ID: W1971675739