Wildlife Community Patterns in Relation to Landscape Structure and Environmental Gradients in a Swedish Boreal Ecosystem | Land Portal

Información del recurso

Date of publication: 
Diciembre 2009
Resource Language: 
ISBN / Resource ID: 
AGRIS:US201600017097
Pages: 
310-318

Many environmental patterns that may have profound effects on wildlife communities occur at the landscape scale, e.g. habitat fragmentation, human demography and distribution of various resources. In order to understand how alterations of such patterns could influence e.g. wildlife species occurrences and community composition, it is important to first study these relationships empirically and at the appropriate scale. We surveyed the wildlife community in a boreal ecosystem in central Sweden using pellet group counts, while walking ‘‘wildlife triangles’’. Our main aim was to investigate how the distribution of medium- and large-sized wild mammals and large-sized forest birds were affected by environmental variables at the landscape scale. In 2001––2003, pellet groups of mammals and forest birds were counted on 211 triangular routes with a perimeter of 4+4+4 km. The pellet groups which had accumulated after leaf fall were counted in spring. The environmental properties of each triangle, including information on latitude, altitude, infrastructure, land cover, forest type and forest stage, were determined using GIS maps. Statistical analyses involved mainly ordination (Principal Component Analysis, PCA). Significant environmental variables explaining the wildlife community composition and distribution in the boreal ecosystem were altitude, clear-felling and infrastructure. Our conclusion, however, is that most boreal mammal and forest bird species are habitat generalists and show little spatial pattern in distributions at the landscape scale. This indicates that habitat selectiveness probably occurs at a local scale in the boreal forest. Ultimately, our conclusion provides important direction for e.g. conservation measures and wildlife management.

Autores y editores

Author(s), editor(s), contributor(s): 

Wallgren, Määrtha
Bergströöm, Roger
Danell, Kjell
Skarpe, Christina

Publisher(s): 
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The Nordic Board for Wildlife Research (NKV) was established in 1971 after recommendation from the Nordic Council of Ministers in 1968.

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