气候变化领域集成服务门户(CCPortal): Herbivory and warming interact in opposing patterns of covariation between arctic shrub species at large and local scales

CCPortal

DOI	10.1073/pnas.2015158118
	Herbivory and warming interact in opposing patterns of covariation between arctic shrub species at large and local scales
	Post E.; Cahoon S.M.P.; Kerby J.T.; Pedersen C.; Sullivan P.F.
发表日期	2021
ISSN	00278424
卷号	118 期号:6
英文摘要	A major challenge in predicting species' distributional responses to climate change involves resolving interactions between abiotic and biotic factors in structuring ecological communities. This challenge reflects the classical conceptualization of species' regional distributions as simultaneously constrained by climatic conditions, while by necessity emerging from local biotic interactions. A ubiquitous pattern in nature illustrates this dichotomy: potentially competing species covary positively at large scales but negatively at local scales. Recent theory poses a resolution to this conundrum by predicting roles of both abiotic and biotic factors in covariation of species at both scales, but empirical tests have lagged such developments. We conducted a 15-y warming and herbivore-exclusion experiment to investigate drivers of opposing patterns of covariation between two codominant arctic shrub species at large and local scales. Climatic conditions and biotic exploitation mediated both positive covariation between these species at the landscape scale and negative covariation between them locally. Furthermore, covariation between the two species conferred resilience in ecosystem carbon uptake. This study thus lends empirical support to developing theoretical solutions to a long-standing ecological puzzle, while highlighting its relevance to understanding community compositional responses to climate change. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Arctic; Betula nana; Climate change; Salix glauca; Species distributions
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180676
作者单位	Department of Wildlife, Fish, and Conservation Biology, University of California, Davis, CA 95616, United States; Pacific Northwest Research Station, US Department of Agriculture Forest Service, Anchorage, AK 99501, United States; Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, 8000, Denmark; Department of Landscape Monitoring, Norwegian Institute of Bioeconomy Research, Ås, 1431, Norway; Environment and Natural Resources Institute, University of Alaska Anchorage, Anchorage, AK 99508, United States
推荐引用方式 GB/T 7714	Post E.,Cahoon S.M.P.,Kerby J.T.,et al. Herbivory and warming interact in opposing patterns of covariation between arctic shrub species at large and local scales[J],2021,118(6).
APA	Post E.,Cahoon S.M.P.,Kerby J.T.,Pedersen C.,&Sullivan P.F..(2021).Herbivory and warming interact in opposing patterns of covariation between arctic shrub species at large and local scales.Proceedings of the National Academy of Sciences of the United States of America,118(6).
MLA	Post E.,et al."Herbivory and warming interact in opposing patterns of covariation between arctic shrub species at large and local scales".Proceedings of the National Academy of Sciences of the United States of America 118.6(2021).