NDLI: Vegetation structural and compositional heterogeneity as a key feature in Alpine black grouse microhabitat selection: conservation management implications

Content Provider	Springer Nature Link
Author	Patthey, Patrick Sigrell, Natalina Rotelli, Luca Arlettaz, Raphaël
Copyright Year	2011
Abstract	European Alpine landscapes are facing marked land-use changes. On the one hand, outdoor winter recreation is spreading, with ski infrastructure degrading fragile mountain habitats, and snowsports causing disturbance and stress to wildlife. On the other hand, the abandonment of traditional grazing practices on timberline grasslands is leading to their encroachment by shrubs and forest, which decreases habitat heterogeneity and negatively affects biodiversity. We used the black grouse, a declining key indicator species of the Alpine timberline ecosystem, to assess optimal breeding habitat characteristics, with the goal of providing guidelines for appropriate restoration. Using Mixed Effects Logistic Regression analyses, we compared habitat features both at visited and at pseudo-absence locations within individual home ranges in order to determine the optimal habitat for males and females. Horizontal and vertical structural heterogeneity within all vegetation layers was the best predictor of occurrence for both sexes. In contrast, vegetation composition affected the presence of females, but not that of males. Females preferred a diverse, complex mosaic consisting of isolated mature coniferous trees and scattered small regenerating trees, associated with shrub cover (Ericacea) and Alpine meadows (Nardion). Chick-rearing females furthermore avoided roads, forest tracks and walking paths. The optimal predicted proportions of habitat types obtained from the model provide guidelines for the restoration of timberline ecosystems through corrective forestry measures and/or adapted grazing practices. These measures are likely to also benefit other Alpine timberline biodiversity.
Starting Page	59
Ending Page	70
Page Count	12
File Format	PDF
ISSN	16124642
Journal	European Journal of Wildlife Research
Volume Number	58
Issue Number	1
e-ISSN	14390574
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-05-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bird conservation Fine-grained habitat selection Habitat management Alps Timberline ecosystem Tetrao tetrix Zoology Animal Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics Management, Monitoring, Policy and Law Nature and Landscape Conservation

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