期刊
MAMMALIAN BIOLOGY
卷 79, 期 5, 页码 306-312出版社
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.mambio.2014.04.004
关键词
Microtus gregalis; Microtus middendorffii; Habitat use; Population cycles; Shrub tundra
类别
资金
- Norwegian Research Council [UD RAS 12-4-7-022-Arctic]
- Russian Foundation for Basic Research [11-04-01153-a]
- NSERC
Northern small rodents are well known for their population cycles which represent a key process for the functioning of arctic and boreal ecosystems. Habitat use often changes in the course of the cycle. Higher densities can either lead to spill-over into secondary habitats or to increased habitat specificity because of interspecific competition. Here we investigate whether voles in the shrub tundra of southern Yamal exhibit density dependent habitat use. Voles were trapped at the Erkuta Tundra Monitoring Site (N 68.2 degrees, E 69.2 degrees) in three characteristic habitats over five years covering all phases of the population cycle. Our analyses focused on the two most numerous species Microtus gregalis (52% of individuals caught) and M. middendorffii (36%). A small-scale spill-over effect was observed for M. gregalis, which increasingly used the open habitat adjacent to their preferred willow thickets at high abundance. At a larger scale no such effect was observed for the two Microtus species - a result which is explained by the overall moderate densities of voles and the large spatial extent of the primary habitat of M. middendorffii: moist moss dwarf shrub tundra. (C) 2014 Deutsche Gesellschaft fur Saugetierkunde. Published by Elsevier GmbH. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据