Tree mixtures mediate negative effects of introduced tree species on bird taxonomic and functional diversity

2022-09-30 | journal article. A publication with affiliation to the University of Göttingen.

Jump to:Cite & Linked | Documents & Media | Details | Version history

Cite this publication

​Schuldt, A., Huke, P., Glatthorn, J., Hagge, J., Wildermuth, B. & Matevski, D. (2022). ​Tree mixtures mediate negative effects of introduced tree species on bird taxonomic and functional diversity. Journal of Applied Ecology59(12), Article 1365-2664.14300​. ​doi: https://doi.org/10.1111/1365-2664.14300 

Documents & Media

JPE_JPE14300.pdf1.02 MBAdobe PDF

License

Published Version

Attribution-NonCommercial-NoDerivs 4.0 CC BY-NC-ND 4.0

Details

Authors
Schuldt, Andreas; Huke, Pelle; Glatthorn, Jonas; Hagge, Jonas; Wildermuth, Benjamin; Matevski, Dragan
Abstract
Abstract Recent biodiversity loss has emphasized the necessity to critically evaluate the consequences of human alterations of forest ecosystems. Stand diversification via tree species mixtures and the use of non‐native trees are two such alterations currently gaining importance as climate change adaptations. However, the effects of local versus regional tree mixing on associated biodiversity and notably the modifying role of tree species growing outside their natural range remain poorly understood. We assessed how monocultures and mixtures of native and introduced tree species influence the taxonomic and functional diversity of bird communities at stand and landscape scales in north‐west Germany. We focused on the dominant natural tree species (Fagus sylvatica) and economically important conifer species planted outside their natural range (the native Picea abies and non‐native Pseudotsuga menziesii). We found that bird species richness and functional diversity were generally higher in pure and mixed stands of native F. sylvatica than in pure conifer stands, especially in comparison to non‐native P. menziesii. These differences were particularly strong at the landscape scale. Pure conifer stands harboured only a reduced set of functionally similar bird species. Structural diversity based on tree microhabitat availability emerged as a key predictor of bird diversity. Synthesis and applications. Our study suggests that tree species mixtures do not necessarily increase bird diversity compared to pure stands of native trees, but can promote bird diversity relative to pure stands of species planted outside their natural range. Moreover, local mixtures, rather than a mosaic of pure stands, may promote bird diversity also at the landscape scale. By contrast, pure stands of tree species planted outside their natural range can increase biotic homogenization of forest birds. Promoting structural diversity of microhabitats via tree retention and ensuring that non‐native trees are planted in mixtures with native trees may alleviate potential limitations of climate change‐oriented management for biodiversity.
Our study suggests that tree species mixtures do not necessarily increase bird diversity compared to pure stands of native trees, but can promote bird diversity relative to pure stands of species planted outside their natural range. Moreover, local mixtures, rather than a mosaic of pure stands, may promote bird diversity also at the landscape scale. By contrast, pure stands of tree species planted outside their natural range can increase biotic homogenization of forest birds. Promoting structural diversity of microhabitats via tree retention and ensuring that non‐native trees are planted in mixtures with native trees may alleviate potential limitations of climate change‐oriented management for biodiversity. image
Issue Date
30-September-2022
Journal
Journal of Applied Ecology 
Organization
Fakultät für Forstwissenschaften und Waldökologie ; Burckhardt-Institut ; Abteilung Waldnaturschutz 
ISSN
0021-8901
eISSN
1365-2664
Language
English
Sponsor
Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659

Reference

Citations


Social Media