Articles | Volume 13, issue 2
https://doi.org/10.5194/os-13-337-2017
https://doi.org/10.5194/os-13-337-2017
Research article
 | 
25 Apr 2017
Research article |  | 25 Apr 2017

Seabirds as samplers of the marine environment – a case study of northern gannets

Stefan Garthe, Verena Peschko, Ulrike Kubetzki, and Anna-Marie Corman

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Short summary
We investigated how the largest seabird of the North Atlantic, the northern gannet, uses the southern North Sea as its habitat to search for food. We deployed small GPS trackers on the birds that recorded the birds' movements in detail. Birds were away from the breeding colony mostly for 1–15 h and up to 80 km distance to find prey for their chicks and themselves. To obtain food, they dove frequently to depths of 1–3 m, with a maximum of 11 m.