NDLI: Habitat selection, reproduction and predation of wintering lemmings in the Arctic

Content Provider	Springer Nature Link
Author	Duchesne, David Gauthier, Gilles Berteaux, Dominique
Copyright Year	2011
Abstract	Snow cover has dramatic effects on the structure and functioning of Arctic ecosystems in winter. In the tundra, the subnivean space is the primary habitat of wintering small mammals and may be critical for their survival and reproduction. We have investigated the effects of snow cover and habitat features on the distributions of collared lemming (Dicrostonyx groenlandicus) and brown lemming (Lemmus trimucronatus) winter nests, as well as on their probabilities of reproduction and predation by stoats (Mustela erminea) and arctic foxes (Vulpes lagopus). We sampled 193 lemming winter nests and measured habitat features at all of these nests and at random sites at two spatial scales. We also monitored overwinter ground temperature at a subsample of nest and random sites. Our results demonstrate that nests were primarily located in areas with high micro-topography heterogeneity, steep slopes, deep snow cover providing thermal protection (reduced daily temperature fluctuations) and a high abundance of mosses. The probability of reproduction increased in collared lemming nests at low elevation and in brown lemming nests with high availability of some graminoid species. The probability of predation by stoats was density dependent and was higher in nests used by collared lemmings. Snow cover did not affect the probability of predation of lemming nests by stoats, but deep snow cover limited predation attempts by arctic foxes. We conclude that snow cover plays a key role in the spatial structure of wintering lemming populations and potentially in their population dynamics in the Arctic.
Starting Page	967
Ending Page	980
Page Count	14
File Format	PDF
ISSN	00298549
Journal	Oecologia
Volume Number	167
Issue Number	4
e-ISSN	14321939
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-06-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Dicrostonyx groenlandicus Lemmus trimucronatus Small mammals Snow cover Tundra Plant Sciences Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Landscapes of fear or competition? Predation did not alter habitat choice by Arctic rodents

POPULATION ECOLOGY- ORIGINAL PAPER Habitat selection, reproduction and predation of wintering lemmings in the Arctic (2011)

Cycles and synchrony in the Collared Lemming (Dicrostonyx groenlandicus) in Arctic North America

Comparing the genetic population structure of two species of arctic lemmings: more local differentiation in Lemmus trimucronatus than in Dicrostonyx groenlandicus

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