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Landscape structure and the long-term decline of cyclic grey-sided voles in Fennoscandia
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser.ORCID-id: 0000-0003-4208-345X
Department of Forest Resource Management and Geomatics, Swedish University of Agricultural Sciences, Umeå.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.
Department of Forest Resource Management and Geomatics, Swedish University of Agricultural Sciences, Umeå.
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2010 (Engelska)Ingår i: Landscape Ecology, ISSN 0921-2973, E-ISSN 1572-9761, Vol. 25, nr 4, s. 551-560Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

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.

Ort, förlag, år, upplaga, sidor
2010. Vol. 25, nr 4, s. 551-560
Nationell ämneskategori
Ekologi Geokemi
Forskningsämne
Landskapsekologi; Tillämpad geologi
Identifikatorer
URN: urn:nbn:se:ltu:diva-11511DOI: 10.1007/s10980-009-9441-xISI: 000275444100005Scopus ID: 2-s2.0-77952745399Lokalt ID: a80f9c50-fc42-11de-bae5-000ea68e967bOAI: oai:DiVA.org:ltu-11511DiVA, id: diva2:984461
Anmärkning
Validerad; 2010; 20100108 (andbra)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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