Home About Browse Search
Svenska


Central place foraging in a human‐dominated landscape ‐ how do common cranes select feeding sites?

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]

[img] PDF
608kB

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
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:
Type of IDID
DOI/10.1111/jav.02487
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:01 Sep 2020 12:29

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits