Arid
DOI10.1002/ecs2.1833
Species climatic niche explains drought-induced die-off in a Mediterranean woody community
Sapes, Gerard1,2,3; Serra-Diaz, Josep M.4; Lloret, Francisco2,3
通讯作者Sapes, Gerard
来源期刊ECOSPHERE
ISSN2150-8925
出版年2017
卷号8期号:5
英文摘要

During the last decades, plant die-off has been reported worldwide as a result of increased frequency and intensity of extreme drought events. From a niche perspective, a species performance should decrease as the climatic conditions defining a drought event differ from those characterizing the species climatic niche (the average conditions experienced by the species). Species distribution models (SDMs) can potentially be used to test the link between species performance and their climatic niche by means of climatic suitability indexes. We studied the remaining green canopy of 18 woody species co-occurring in a Mediterranean shrubland from the central Iberian Peninsula that experienced a severe die-off following an extreme drought event. We found that the suitability of the climatic conditions estimated by SDMs strongly declined for all species during the extreme drought event. Species die-off was significantly explained by the decrease in climatic suitability during the event, estimated as the ratio between the historic and the extreme event climatic suitability. Species with high occupancy levels across the landscape exhibited higher die-off likely because (1) these species have short life-span and mortality would be compensated by later high recruitment or (2) populations of rare species may have experienced local adaptation to drier conditions. Our results indicate that extreme drought events can have a negative effect, even in shrubland communities living in arid environments. Also, we develop a new approach that connects population-level responses to species climatic niches through SDMs, and it can be applied to predict community responses to strong climatic variability, such as drought events.


英文关键词climatic niche correlative niche models defoliation die-off drought responses extreme drought event Maxent Mediterranean ecosystems niche-based models shrubland species distribution models
类型Article
语种英语
国家USA ; Spain
收录类别SCI-E
WOS记录号WOS:000402472300032
WOS关键词CROWN CONDITION ; TREE MORTALITY ; VEGETATION ; POPULATION ; RECOVERY ; DISTRIBUTIONS ; ACCLIMATION ; SHRUBLANDS ; EVOLUTION ; DYNAMICS
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198544
作者单位1.Univ Montana, Div Biol Sci, Missoula, MT 59812 USA;
2.CREAF, Cerdanyola Del Valles 08913, Spain;
3.Univ Autonoma Barcelona, Cerdanyola Del Valles 08913, Spain;
4.Harvard Univ, Harvard Forest, Petersham, MA 01366 USA
推荐引用方式
GB/T 7714
Sapes, Gerard,Serra-Diaz, Josep M.,Lloret, Francisco. Species climatic niche explains drought-induced die-off in a Mediterranean woody community[J],2017,8(5).
APA Sapes, Gerard,Serra-Diaz, Josep M.,&Lloret, Francisco.(2017).Species climatic niche explains drought-induced die-off in a Mediterranean woody community.ECOSPHERE,8(5).
MLA Sapes, Gerard,et al."Species climatic niche explains drought-induced die-off in a Mediterranean woody community".ECOSPHERE 8.5(2017).
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