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Intensity of space use reveals conditional sex-specific effects of prey and conspecific density on home range size

Aronsson, Malin and Low, Matthew and López-Bao, José Vicente and Persson, Jens and Odden, John and Linnell, John D C and Andren, Henrik (2016). Intensity of space use reveals conditional sex-specific effects of prey and conspecific density on home range size. Ecology and evolution. 6:9, 2957-2967
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Official URL: http://dx.doi.org/10.1002/ece3.2032

Abstract

Home range (HR) size variation is often linked to resource abundance, with sex differences expected to relate to sex-specific fitness consequences. However, studies generally fail to disentangle the effects of the two main drivers of HR size variation, food and conspecific density, and rarely consider how their relative influence change over spatiotemporal scales. We used location data from 77 Eurasian lynx (Lynx lynx) from a 16-year Scandinavian study to examine HR sizes variation relative to prey and conspecific density at different spatiotemporal scales. By varying the isopleth parameter (intensity of use) defining the HR, we show that sex-specific effects were conditional on the spatial scale considered. Males had larger HRs than females in all seasons. Females' total HR size declined as prey and conspecific density increased, whereas males' total HR was only affected by conspecific density. However, as the intensity of use within the HR increased (from 90% to 50% isopleth), the relationship between prey density and area showed opposing patterns for females and males; for females, the prey density effect was reduced, while for males, prey became increasingly important. Thus, prey influenced the size of key regions within male HRs, despite total HR size being independent of prey density. Males reduced their HR size during the mating season, likely to remain close to individual females in estrous. Females reduced their HR size postreproduction probably because of movement constrains imposed by dependent young. Our findings highlight the importance of simultaneously considering resources and intraspecific interactions as HR size determinants. We show that sex-specific demands influence the importance of prey and conspecific density on space use at different spatiotemporal scales. Thus, unless a gradient of space use intensity is examined, factors not related to total HR size might be disregarded despite their importance in determining size of key regions within the HR.

Authors/Creators:Aronsson, Malin and Low, Matthew and López-Bao, José Vicente and Persson, Jens and Odden, John and Linnell, John D C and Andren, Henrik
Title:Intensity of space use reveals conditional sex-specific effects of prey and conspecific density on home range size
Series/Journal:Ecology and evolution (2045-7758)
Year of publishing :2016
Volume:6
Number:9
Page range:2957-2967
Number of Pages:11
Publisher:John Wiley & Sons Ltd.
ISSN:2045-7758
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
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 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
Keywords:Capreolus capreolus, carnivores, kernel home range estimator, ranging behavior, spatiotemporal variation, utilization distribution
URN:NBN:urn:nbn:se:slu:epsilon-e-3887
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3887
Additional ID:
Type of IDID
Web of Science (WoS)000376149400027
DOI10.1002/ece3.2032
ID Code:13974
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:19 Jan 2017 12:22
Metadata Last Modified:19 Jan 2017 12:22

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