Polar Biology

, Volume 40, Issue 11, pp 2329–2334 | Cite as

Feeding preference of brown lemmings (Lemmus trimucronatus) for plant parts of Arctic willow (Salix arctica)

  • Dominique FauteuxEmail author
  • Guillaume Slevan-Tremblay
  • Gilles Gauthier
  • Dominique Berteaux
Original Paper


Food availability has been proposed to be a factor driving population fluctuations of lemmings in the Arctic. In contrast with previous studies, a recent analysis of faecal pellets and stomach contents of brown lemmings (Lemmus trimucronatus) reported a surprisingly high proportion (34–56%) of willows (Salix spp.) in their diet during both summer and winter in the Canadian high Arctic. To better understand the contribution of willows to the diet of lemmings, we designed a cafeteria experiment to determine which part of Arctic willows (S. arctica), usually the most abundant willow in the Canadian Arctic, were preferred by lemmings. We designed two types of experiments, one with flowering willows (summer stage; n = 10) and one with dormant willows without flowers or leaves (winter stage; n = 11). Lemmings preferred buds and to a lesser extent roots over woody stems in dormant willows, whereas in flowering willows, they preferred flowers and roots over leaves and buds. Our results suggest that lemmings shift their diet seasonally and prefer the fleshiest willow parts, i.e. flowers in summer and buds in winter. High consumption of roots by lemmings in both types of experiments indicates strong underground feeding habits. This behaviour could be favoured by geomorphological processes such as soil upheaves and permafrost thawing that often expose roots to grazing.


Food limitation hypothesis Herbivory Arctic shrubs Grazing Diet composition Population cycles Lemmings 



We thank Christine Lambert, Aurélie Chagnon-Lafortune, and Yannick Seyer for their help with the field work. The research relied on the logistic assistance of the Polar Continental Shelf Program (Natural Resources Canada) and of Sirmilik National Park. The research was funded by the Natural Sciences and Engineering Research Council of Canada (Discovery Grants and Frontiers to Discovery programs), the Northern Student Training Program of Indian and Northern Affairs Canada, the Network of Centres of Excellence of Canada ArcticNet, the NSERC-CREATE Training Program in Northern Environmental Sciences Environord, the W. Garfield Weston Foundation, and the Fonds de recherche du Québec – Nature et technologies.

Supplementary material

300_2017_2147_MOESM1_ESM.docx (122 kb)
Supplementary material 1 (DOCX 121 kb)


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of Biology and Centre d’études nordiquesUniversité LavalQuébecCanada
  2. 2.Canada Research Chair on Northern Biodiversity and Centre d’études nordiquesUniversité du Québec à RimouskiRimouskiCanada

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