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Investigating foraging preferences of the Short-Eared Owl (Asio flammeus) for taking effective conservation measures

Investigating foraging preferences of the Short-Eared Owl (Asio flammeus) for taking effective conservation measures

Samenvatting

Short-Eared Owls (Asio flammeus) are associated with open expanded moor- and grasslands. Once a common breeding bird, the species has undergone a large Europe-wide population decline. Currently, it is a red list species that is threatened by extinction in whole Central Europe. Loss and alterations of suitable habitat are assumed to be the main causes for the population decline. The last regularly usedbreeding area in Germany are the East-Frisian islands that are therefore from particular importance concerning the conservation of that species. More knowledge about the habitat requirements of Short-Eared Owls is needed for effectively maintaining and managing this last regularly used breeding area. The present work was carried out to investigate the foraging ground preferences by Short-Eared Owlson the East-Frisian island Spiekeroog. Through systematic observations, foraging efficiency and preferred biotopes for hunting have been recorded. Foraging efficiency was tested for differences between the biotopes. Vegetation coverage between foraging grounds and control points has been compared. The distance of foraging grounds to areas used by humans has been computed to examine if the proximity to humans was another decisive factor in the foraging ground choice. The locations ofthe foraging grounds within the National Park Zonation of Lower Saxony have been aligned as well.

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OrganisatieVan Hall Larenstein
AfdelingKust en Zee Management
PartnersUniversität Osnabrück
Datum2019-04-04
TypeBachelorscriptie
TaalEngels

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