DOI: 10.1111/gcb.14583
Scopus记录号: 2-s2.0-85061986479
论文题名: Multiscale climate change impacts on plant diversity in the Atacama Desert
作者: Díaz F.P. ; Latorre C. ; Carrasco-Puga G. ; Wood J.R. ; Wilmshurst J.M. ; Soto D.C. ; Cole T.L. ; Gutiérrez R.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2019
语种: 英语
英文关键词: ancient DNA
; Atacama Desert
; biodiversity
; biogeography
; climate change
; desert plants
; elevational gradients
; fossil middens
; metabarcoding
; paleoecology
英文摘要: Comprehending ecological dynamics requires not only knowledge of modern communities but also detailed reconstructions of ecosystem history. Ancient DNA (aDNA) metabarcoding allows biodiversity responses to major climatic change to be explored at different spatial and temporal scales. We extracted aDNA preserved in fossil rodent middens to reconstruct late Quaternary vegetation dynamics in the hyperarid Atacama Desert. By comparing our paleo-informed millennial record with contemporary observations of interannual variations in diversity, we show local plant communities behave differentially at different timescales. In the interannual (years to decades) time frame, only annual herbaceous expand and contract their distributional ranges (emerging from persistent seed banks) in response to precipitation, whereas perennials distribution appears to be extraordinarily resilient. In contrast, at longer timescales (thousands of years) many perennial species were displaced up to 1,000 m downslope during pluvial events. Given ongoing and future natural and anthropogenically induced climate change, our results not only provide baselines for vegetation in the Atacama Desert, but also help to inform how these and other high mountain plant communities may respond to fluctuations of climate in the future. © 2019 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117543
Appears in Collections: 气候变化与战略
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Recommended Citation:
Díaz F.P.,Latorre C.,Carrasco-Puga G.,et al. Multiscale climate change impacts on plant diversity in the Atacama Desert[J]. Global Change Biology,2019-01-01