Isotopic partitioning by small mammals in the subnivium.
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ABSTRACT:
SUBMITTER: Calandra I
PROVIDER: S-EPMC4588660 | biostudies-literature | 2015 Sep
REPOSITORIES: biostudies-literature
Publications
Isotopic partitioning by small mammals in the subnivium.
Calandra Ivan I Labonne Gaëlle G Mathieu Olivier O Henttonen Heikki H Lévêque Jean J Milloux Marie-Jeanne MJ Renvoisé Élodie É Montuire Sophie S Navarro Nicolas N
Ecology and evolution 20150904 18
In the Arctic, food limitation is one of the driving factors behind small mammal population fluctuations. Active throughout the year, voles and lemmings (arvicoline rodents) are central prey in arctic food webs. Snow cover, however, makes the estimation of their winter diet challenging. We analyzed the isotopic composition of ever-growing incisors from species of voles and lemmings in northern Finland trapped in the spring and autumn. We found that resources appear to be reasonably partitioned a ...[more]
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