Abstract
The acceleration of grassland loss on the global scale has been reported in many studies, which is often attributed to the combination of land use change and increased variability of climatic processes. Extensive steppe national parks serve as an ideal study site for grassland conservation, especially wilderness areas where the natural effects of grazing on wildlife can still be tracked. In our study we aim to investigate the effects of habitat structure, grazing type and intensity as well as climatic variables on species abundance, species richness and abundance of functional groups of ground-breeding bird species in the largest compact alkali grassland area of central Europe. We applied the information theoretic approach estimating the importance of ecological predictors according models of substantial support. The main result of our study shows that ground-breeding bird communities in steppe areas exhibit highly species-specific responses to the species of grazers, grazing intensity, habitat composition and climatic predictors. Across the most supported models, species-specific habitat composition values were the most supported predictors. Our findings show that although the response of ground-breeding birds to vegetation, grazing and climatic predictors is highly species-specific, consistent patterns of responsiveness to grazing and climatic patterns emerge, which calls for long-term studies on the combined effects of climatic variability and management of grazing systems.
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Abbreviations
- GLMM:
-
General Linear Mixed Models
- HNP:
-
Hortobágy National Park
- UD:
-
Utilization Distribution
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Kerekes, V., Végvári, Z. Effects of wilderness grazing on ground-breeding birds in Pannonian grasslands. COMMUNITY ECOLOGY 17, 149–155 (2016). https://doi.org/10.1556/168.2016.17.2.3
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DOI: https://doi.org/10.1556/168.2016.17.2.3