NDLI: Landscape structure and the long-term decline of cyclic grey-sided voles in Fennoscandia

Content Provider	Springer Nature Link
Author	Ecke, Frauke Christensen, Pernilla Rentz, Ralf Nilsson, Mats Sandström, Per Hörnfeldt, Birger
Copyright Year	2009
Abstract	Changes in forest landscape structure have been suggested as a likely contributing factor behind the long-term decline in the numbers of cyclic grey-sided voles (Clethrionomys rufocanus) in northern Fennoscandian lowland regions in contrast to mountain regions due to the absence of forest management in the mountains. This study, for the first time, formally explored landscape structure in 29 lowland (LF) and 14 mountain forest (MF) landscapes (each 2.5 × 2.5 km) in northern Sweden, and related the results to the cumulated spring trapping index of the grey-sided vole in 2002–2006. The grey-sided vole showed striking contrasts in dynamics close in space and time. The MF landscapes were characterized by larger patches and less fragmentation of preferred forest types. The grey-sided vole was trapped in all of 14 analyzed MF landscapes but only in three out of 29 of the LF landscapes. MF and LF landscapes with grey-sided vole occurrence were characterized by similar focal forest patch size (mean 357 ha, minimum 82 ha and mean 360 ha, minimum 79 ha, respectively). In contrast, these MF compared to the LF landscapes were characterized by larger patches of preferred forest types and less fragmented preferred forest types and by a lower proportion of clear-cut areas. The present results suggest that landscape structure is important for the abundance of grey-sided voles in both regions. However, in the mountains the change from more or less seasonal dynamics to high-amplitude cycles between the mid 1990s and 2000s cannot be explained by changes in landscape structure.
Starting Page	551
Ending Page	560
Page Count	10
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	25
Issue Number	4
e-ISSN	15729761
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-12-30
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Boreal forest Clethrionomys rufocanus Contrasting dynamics Fragmentation Habitat preferences Metapopulation Mountain forest Patch size Small mammals Sweden Plant Sciences Ecology Forestry Plant Ecology Landscape Ecology Forestry Management
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Ecology Nature and Landscape Conservation

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