Flight and foraging patterns of lesser black-backed gulls and Northern gannets in the southern North Sea.

Corman, Anna-Marie (2015) Flight and foraging patterns of lesser black-backed gulls and Northern gannets in the southern North Sea. Open Access (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, Germany, 125 pp.

diss_corman_seabirds_north_sea.pdf - Published Version
Available under License Creative Commons: Attribution 3.0.

Download (8Mb) | Preview


The study focuses on the foraging ecology of two common seabird species of the southern North Sea, lesser black-backed gulls and northern gannets. The spatiotemporal patterns were considered in light of offshore wind farms, representing a recent anthropogenic pressure on the birds' foraging and space use. Flight and foraging patterns of both species were recorded by attaching small GPS data loggers on breeding birds at different German North Sea Islands. Their foraging patterns differed among the six studied breeding colonies and between the sexes, and also indicated a large amount of individual specialisation in foraging behaviour. The vertical flight distribution of lesser black-backed gulls showed that birds flew in the critical heights of the rotor swept areas of offshore wind farms to a certain extent, and thus were likely to collide with offshore turbines, expecially during bad weather conditions. Northern gannets, which are rather inflexible flyers with poor flight manoeuvrability compared to the gulls, largely avoided the offshore wind farm areas, and only crossed those areas where turbines were not installed yet.

Document Type: Thesis (PhD/ Doctoral thesis)
Thesis Advisor: Garthe, Stefan and Ismar, Stefanie M. H.
Keywords: seabirds, Larus fuscus, Morus bassanus, North Sea, foraging ecology, trophic ecology, spatiotemporal patterns, habitat utilization, spatial segregation, offshore wind farms, flight heights, collision risk, habitat displacement Seevögel, Heringsmöwen, Basstölpel, Nordsee, Nahrungssuchökologie, Ernährungsökologie, raumzeitliche Muster, Habitatnutzung, Offshore-Windparks, Flughöhen, Kollisionsrisiko, Habitatverdrängung
Research affiliation: Kiel University
OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EOE-N Experimental Ecology - Food Webs
Open Access Journal?: No
Projects: WINDBIRD
Date Deposited: 20 Oct 2015 12:22
Last Modified: 23 Sep 2019 22:19
URI: http://oceanrep.geomar.de/id/eprint/30092

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...