Nilsson, Lovisa and Persson, Jens and Bunnefeld, Nils and Månsson, Johan
(2020).
Central place foraging in a human‐dominated landscape ‐ how do common cranes select feeding sites?
Journal of Avian Biology. 51
, 1-9
[Journal article]
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Abstract
Human infrastructure and disturbance play an important role when animals select resources in human‐modified landscapes. Theory predicts that animals trade food intake against costs of movement or disturbance to optimize net energy gain and fitness, but other necessary resources may also constrain the decisions, e.g. when animals repeatedly need to return to a central location, such as a nest, waterhole or night roost. Central place foraging theory states that the probability of occurrence of an animal decreases with the distance to the central location while selectivity for food items or foraging sites providing high net energy gain should increase with distance. We studied foraging patterns of common cranes Grus grus feeding in an agricultural landscape adjacent to a wetland to which they return for night roost. We used availability of spilled grains on harvested fields and distance to human settlement as proxy for site quality (i.e. increased likelihood of increased net energy gain with increased food availability and less disturbance). As predicted by theory, our results clearly show that cranes were more likely (more than twice as high resource selection function scores) to select foraging sites close to roosts. However, contrary to predictions, the selection of high quality sites in terms of high food availability decreased with distance to roost sites. Nevertheless, our results indicate that cranes were more likely to select sites with low risk of human disturbance far from roost sites, and were more tolerant to disturbance close to roost sites. How different species respond to the local and environmental conditions will increase the understanding of the species’ resource requirement, and also where in the landscape to prioritize conservation or management actions (e.g. mitigation of human disturbance and crop damage prevention to sustain agricultural production).
Authors/Creators: | Nilsson, Lovisa and Persson, Jens and Bunnefeld, Nils and Månsson, Johan | ||||
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Title: | Central place foraging in a human‐dominated landscape ‐ how do common cranes select feeding sites? | ||||
Year of publishing : | 2020 | ||||
Volume: | 51 | ||||
Page range: | 1-9 | ||||
Number of Pages: | 9 | ||||
Publisher: | John Wiley & Sons Ltd, Nordic Society Oikos | ||||
Associated Programs and Other Stakeholders: | Wildlife Damage Centre | ||||
ISSN: | 0908-8857 | ||||
Language: | English | ||||
Publication Type: | Journal article | ||||
Article category: | Scientific peer reviewed | ||||
Version: | Published version | ||||
Copyright: | Creative Commons: Attribution 4.0 | ||||
Full Text Status: | Public | ||||
Subjects: | (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Zoology (A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Fish and Wildlife Management | ||||
Keywords: | agriculture, conservation conflict, crop protection, geese, Grus grus, stubble fields | ||||
URN:NBN: | urn:nbn:se:slu:epsilon-p-107007 | ||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107007 | ||||
Additional ID: |
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ID Code: | 17358 | ||||
Faculty: | NJ - Fakulteten för naturresurser och jordbruksvetenskap S - Faculty of Forest Sciences | ||||
Department: | (NL, NJ) > Dept. of Ecology (S) > Dept. of Ecology | ||||
Deposited By: | SLUpub Connector | ||||
Deposited On: | 01 Sep 2020 12:29 | ||||
Metadata Last Modified: | 15 Jan 2021 19:44 |
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