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Life-history attributes and resource dynamics determine intraspecific home-range sizes in Carnivora

Duncan, Clare, Nilsen, Erlend B., Linnell, John D. C. and Pettorelli, Nathalie 2015, Life-history attributes and resource dynamics determine intraspecific home-range sizes in Carnivora, Remote sensing in ecology and conservation, vol. 1, no. 1, pp. 39-50, doi: 10.1002/rse2.6.

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Title Life-history attributes and resource dynamics determine intraspecific home-range sizes in Carnivora
Author(s) Duncan, ClareORCID iD for Duncan, Clare orcid.org/0000-0001-5315-2997
Nilsen, Erlend B.
Linnell, John D. C.
Pettorelli, Nathalie
Journal name Remote sensing in ecology and conservation
Volume number 1
Issue number 1
Start page 39
End page 50
Total pages 12
Publisher John Wiley & Sons
Place of publication Chichester, Eng.
Publication date 2015-10
ISSN 2056-3485
Keyword(s) body mass
carnivore
home range
NDVI
resource availability
space-use
Summary Home ranges capture a fundamental aspect of animal ecology, resulting from interactions between metabolic demands and resource availability. Yet, the understanding of their emergence is currently limited by lack of consideration of the covariation between intrinsic and extrinsic drivers. We analysed intraspecific home-range size (HRS) variation with respect to life histories and remotely sensed proxies of resource dynamics for 21 Carnivora species. Our best model explained over half of the observed variability in intraspecific HRS across populations of multiple species. At the species level, median HRS was smaller for omnivorous species and increased with increasing body mass (model R2 = 0.66). Here, HRS scaled with body mass at 0.80, a value much closer to the expected allometric scaling of 0.75 than previously reported. At the intraspecific level, while much variation was driven by intrinsic factors (body mass, diet, social organization and sex; R2 = 0.39), inclusion of spatiotemporal variation in extrinsic factors (average resource availability and seasonality) enabled explanation of a further 13% of observed variability in HRS. We found no evidence for interactions between intrinsic and extrinsic HRS drivers, suggesting a generally ubiquitous influence of resource availability on space-use. Our findings illustrate how spatial and temporal information on resource dynamics as derived by satellite data can significantly improve our understanding of HRS variation at the interspecific and intraspecific levels, and urge caution in interpreting HRS allometry in the face of large intraspecific variation. Moreover, our results highlight the importance of considering life-history constraints in modelling intraspecific space-use and HRS.
Language eng
DOI 10.1002/rse2.6
Field of Research 060299 Ecology not elsewhere classified
060202 Community Ecology (excl Invasive Species Ecology)
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution Non-Commercial No-Derivatives licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30102932

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.