Influence of prey availability on habitat selection during the non-breeding period in a resident bird of prey.

Details

Serval ID
serval:BIB_97CAF292A276
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Influence of prey availability on habitat selection during the non-breeding period in a resident bird of prey.
Journal
Movement ecology
Author(s)
Bühler R., Schalcher K., Séchaud R., Michler S., Apolloni N., Roulin A., Almasi B.
ISSN
2051-3933 (Print)
ISSN-L
2051-3933
Publication state
Published
Issued date
07/03/2023
Peer-reviewed
Oui
Volume
11
Number
1
Pages
14
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
For resident birds of prey in the temperate zone, the cold non-breeding period can have strong impacts on survival and reproduction with implications for population dynamics. Therefore, the non-breeding period should receive the same attention as other parts of the annual life cycle. Birds of prey in intensively managed agricultural areas are repeatedly confronted with unpredictable, rapid changes in their habitat due to agricultural practices such as mowing, harvesting, and ploughing. Such a dynamic landscape likely affects prey distribution and availability and may even result in changes in habitat selection of the predator throughout the annual cycle.
In the present study, we (1) quantified barn owl prey availability in different habitats across the annual cycle, (2) quantified the size and location of barn owl breeding and non-breeding home ranges using GPS-data, (3) assessed habitat selection in relation to prey availability during the non-breeding period, and (4) discussed differences in habitat selection during the non-breeding period to habitat selection during the breeding period.
The patchier prey distribution during the non-breeding period compared to the breeding period led to habitat selection towards grassland during the non-breeding period. The size of barn owl home ranges during breeding and non-breeding were similar, but there was a small shift in home range location which was more pronounced in females than males. The changes in prey availability led to a mainly grassland-oriented habitat selection during the non-breeding period. Further, our results showed the importance of biodiversity promotion areas and undisturbed field margins within the intensively managed agricultural landscape.
We showed that different prey availability in habitat categories can lead to changes in habitat preference between the breeding and the non-breeding period. Given these results we show how important it is to maintain and enhance structural diversity in intensive agricultural landscapes, to effectively protect birds of prey specialised on small mammals.
Keywords
Biodiversity promotion areas, Bird of prey, Full annual cycle, GPS, Habitat selection, Non-breeding period, Resource selection, Small mammals, Tyto alba
Pubmed
Web of science
Open Access
Yes
Create date
13/03/2023 9:12
Last modification date
16/11/2023 7:11
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