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Predation on Seabirds by Pacific Cod Gadus Microcephalus near the Aleutian Islands, Alaska

Sadie E. G. Ulman,T. Hollmen,R. Brewer,Anne Beaudreau

Published 2015 in Marine Ornithology

ABSTRACT

Marine Ornithology 43: 231–233 (2015) Seabirds by and large exhibit decreasing populations, and current major threats include pollution and commercial fisheries at sea, and alien invasive predators, habitat degradation and human disturbance on land (Croxall et al. 2012, Paleczny et al. 2015). During the breeding season, seabirds are exposed to both native and alien terrestrial predators while at breeding colonies (Kondratyev et al. 2000, Byrd & Williams 2008, Hilton & Cuthbert 2010, Burke et al. 2011). In marine systems, most seabirds are considered uppertrophic-level predators, yet they may be vulnerable to predation by other marine animals and thus would be better viewed as mesopredators. Identifying sources of mortality for these species is important for the development of conservation approaches aimed at their recovery (Lewison et al. 2012).

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