气候变化领域集成服务门户(CCPortal): Timing outweighs magnitude of rainfall in shaping population dynamics of a small mammal species in steppe grassland

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DOI	10.1073/pnas.2023691118
	Timing outweighs magnitude of rainfall in shaping population dynamics of a small mammal species in steppe grassland
	Li G.; Wan X.; Yin B.; Wei W.; Hou X.; Zhang X.; Batsuren E.; Zhao J.; Huang S.; Xu X.; Liu J.; Song Y.; Ozgul A.; Dickman C.R.; Wang G.; Krebs C.J.; Zhang Z.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:42
英文摘要	Climate change-induced shifts in species phenology differ widely across trophic levels, which may lead to consumer-resource mismatches with cascading population and ecosystem consequences. Here, we examined the effects of different rainfall patterns (i.e., timing and amount) on the phenological asynchrony of population of a generalist herbivore and their food sources in semiarid steppe grassland in Inner Mongolia. We conducted a 10-y (2010 to 2019) rainfall manipulation experiment in 12 0.48-ha field enclosures and found that moderate rainfall increases during the early rather than late growing season advanced the timing of peak reproduction and drove marked increases in population size through increasing the biomass of preferred plant species. By contrast, greatly increased rainfall produced no further increases in vole population growth due to the potential negative effect of the flooding of burrows. The increases in vole population size were more coupled with increased reproduction of overwintered voles and increased body mass of young-of-year than with better survival. Our results provide experimental evidence for the fitness consequences of phenological mismatches at the population level and highlight the importance of rainfall timing on the population dynamics of small herbivores in the steppe grassland environment. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Climate variability; Consumer-resource dynamics; Phenology mismatch; Rainfall pattern; Steppe grassland
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/238335
作者单位	State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Chinese Academy of Sciences Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China; Colleges of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China; Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, 8057, Switzerland; School of Life and Environmental Sciences, University of Sydney, Camperdown, NSW 2006, Australia; Department of Wildlife, Fisheries and Aquaculture, Mississippi State University, Starkville, MS 39762, United States; Department of Zoology, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
推荐引用方式 GB/T 7714	Li G.,Wan X.,Yin B.,et al. Timing outweighs magnitude of rainfall in shaping population dynamics of a small mammal species in steppe grassland[J],2021,118(42).
APA	Li G..,Wan X..,Yin B..,Wei W..,Hou X..,...&Zhang Z..(2021).Timing outweighs magnitude of rainfall in shaping population dynamics of a small mammal species in steppe grassland.Proceedings of the National Academy of Sciences of the United States of America,118(42).
MLA	Li G.,et al."Timing outweighs magnitude of rainfall in shaping population dynamics of a small mammal species in steppe grassland".Proceedings of the National Academy of Sciences of the United States of America 118.42(2021).