气候变化领域集成服务门户(CCPortal): Beaver-induced spatiotemporal patch dynamics affect landscape-level environmental heterogeneity

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DOI	10.1088/1748-9326/ab9924
	Beaver-induced spatiotemporal patch dynamics affect landscape-level environmental heterogeneity
	Kivinen S.; Nummi P.; Kumpula T.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	Beavers (Castor sp.) are ecosystem engineers that cause significant changes to their physical environment and alter the availability of resources to other species. We studied flood dynamics created by American beaver (C. canadensis K.) in a southern boreal landscape in Finland in 1970-2018. We present for the first time, to our knowledge, a temporally continuous long-term study of beaver-induced flood disturbances starting from the appearance of beaver in the area. During the 49 years, the emergence of new sites flooded by beaver and repeated floods (61% of the sites) formed a dynamic mosaic characterized by clustered patterns of beaver sites. As beaver dispersal proceeded, connectivity of beaver sites increased significantly. The mean flood duration was approximately three years, which highlights the importance of datasets with high-temporal resolution in detecting beaver-induced disturbances. An individual site was often part of the active flood mosaic over several decades, although the duration and the number of repeated floods at different sites varied considerably. Variation of flood-inundated and post-flood phases at individual sites resulted in a cumulative number of unique patches that contribute to environmental heterogeneity in space and time. A disturbance mosaic consisting of patches differing by successional age and flood history is likely to support species richness and abundance of different taxa and facilitate whole species communities. Beavers are thus a suitable means to be used in restoration of riparian habitat due to their strong and dynamic influence on abiotic environment and its biotic consequences. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Forestry; Ecosystem engineer; Environmental heterogeneity; Flood disturbances; High temporal resolution; Physical environments; Riparian habitats; Spatio-temporal patches; Species communities; Floods; environmental assessment; heterogeneity; induced response; landscape change; patch dynamics; spatiotemporal analysis; ungulate; Castor canadensis; Castoridae
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153776
作者单位	Department of Geographical and Historical Studies, University of Eastern Finland, P.O. Box 111, Joensuu, FI-80101, Finland; Finnish Environment Institute, Biodiversity Centre, Latokartanonkaari 11, Helsinki, FI-00790, Finland; Department of Forest Sciences, University of Helsinki, P.O. Box 27, Helsinki, FI-00014, Finland
推荐引用方式 GB/T 7714	Kivinen S.,Nummi P.,Kumpula T.. Beaver-induced spatiotemporal patch dynamics affect landscape-level environmental heterogeneity[J],2020,15(9).
APA	Kivinen S.,Nummi P.,&Kumpula T..(2020).Beaver-induced spatiotemporal patch dynamics affect landscape-level environmental heterogeneity.Environmental Research Letters,15(9).
MLA	Kivinen S.,et al."Beaver-induced spatiotemporal patch dynamics affect landscape-level environmental heterogeneity".Environmental Research Letters 15.9(2020).