气候变化领域集成服务门户(CCPortal): Severe effects of long-term drought on calcareous grassland seed banks

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DOI	10.1038/s41612-017-0007-3
	Severe effects of long-term drought on calcareous grassland seed banks
	Basto S.; Thompson K.; Grime J.P.; Fridley J.D.; Calhim S.; Askew A.P.; Rees M.
发表日期	2018
ISSN	23973722
卷号	1 期号:1
英文摘要	Climate change models project shifts in precipitation patterns at regional and global scales. Increases in dry areas and the occurrence of drought predicted in future scenarios are likely to threaten grassland ecosystems. Calcareous grassland seed banks have proven to be resistant to short-term drought, but their responses to long-term drought are unknown. Here we show that 14 years of summer drought changed calcareous grassland seed bank composition, reducing its size and richness, and that these responses do not simply reflect patterns in the above-ground vegetation. Moreover, the effect of drought was larger on seed banks than on vegetation, and above-ground responses mediated by soil depth were less evident in the seed bank than in the vegetation. These results demonstrate that the severity of drought effects on calcareous grasslands is larger than previously thought, and show that this ecosystem is highly vulnerable and has low resilience to predicted decreases in soil moisture. © 2018, The Author(s).
语种	英语
scopus关键词	calcareous grassland; climate effect; climate modeling; drought; precipitation (climatology); regional climate; seed bank; soil moisture; vegetation dynamics
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178123
作者单位	Unidad de Ecología y Sistemática, Departamento de Biología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82 Ed. Jesús Emilio Ramírez (53), Bogotá, Colombia; Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, United Kingdom; Department of Biology, Syracuse University, 107 College Place, Syracuse, NY, United States; Department of Biological and Environmental Science, University of Jyväskylä, PO Box 35, Jyväskylä, FI-40014, Finland
推荐引用方式 GB/T 7714	Basto S.,Thompson K.,Grime J.P.,et al. Severe effects of long-term drought on calcareous grassland seed banks[J],2018,1(1).
APA	Basto S..,Thompson K..,Grime J.P..,Fridley J.D..,Calhim S..,...&Rees M..(2018).Severe effects of long-term drought on calcareous grassland seed banks.npj Climate and Atmospheric Science,1(1).
MLA	Basto S.,et al."Severe effects of long-term drought on calcareous grassland seed banks".npj Climate and Atmospheric Science 1.1(2018).