气候变化领域集成服务门户(CCPortal): Extreme hydroclimate response gradients within the western Cape Floristic region of South Africa since the Last Glacial Maximum

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DOI	10.1016/j.quascirev.2019.07.006
	Extreme hydroclimate response gradients within the western Cape Floristic region of South Africa since the Last Glacial Maximum
	Chase B.M.; Boom A.; Carr A.S.; Chevalier M.; Quick L.J.; Verboom G.A.; Reimer P.J.
发表日期	2019
ISSN	0277-3791
起始页码	297
结束页码	307
卷号	219
英文摘要	The Cape Floristic Region (CFR) is one of the world's major biodiversity hotspots, and much work has gone into identifying the drivers of this diversity. Considered regionally in the context of Quaternary climate change, climate stability is generally accepted as being one of the major factors promoting the abundance of species now present in the CFR. However, little direct evidence is available from the region, and responses to changes in global boundary conditions have been difficult to assess. In this paper, we present new high-resolution stable isotope data from Pakhuis Pass, in the species-rich western CFR, and contextualise our findings through comparison with other records from the region. Combined, they indicate clear, coherent changes in regional hydroclimate, which we relate to broader forcing mechanisms. However, while these climate change events share similar timings (indicating shared macro-scale drivers), the responses are distinct between sites, in some cases expressing opposing trends over very short spatial gradients (<50 km). We describe the evolution of these trends, and propose that while long-term (105 yr) general climatic stability may have fostered high diversity in the region through low extinction rates, the strong, abrupt changes in hydroclimate gradients observed in our records may have driven a form of allopatric speciation pump, promoting the diversification of plant lineages through the periodic isolation and recombination of plant populations. © 2019 Elsevier Ltd
英文关键词	Biodiversity; Cape Floristic region; Climate dynamics; Palaeoclimate; Rock hyrax middens; South Africa; Stable isotopes
语种	英语
scopus关键词	Biodiversity; Isotopes; Cape Floristic region; Climate dynamics; Palaeoclimate; South Africa; Stable isotopes; Climate change; biodiversity; Cape Floristic Region; climate change; climate forcing; environmental gradient; extreme event; historical record; hydrometeorology; Last Glacial Maximum; paleoclimate; paleoenvironment; Quaternary; stable isotope; Pakhuis Pass; South Africa; Western Cape; Procavia capensis
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151815
作者单位	Institut des Sciences de l'Evolution-Montpellier (ISEM), University of Montpellier, Centre National de la Recherche Scientifique (CNRS), EPHE, IRD, Montpellier, France; School of Geography, Geology and the Environment, University of Leicester, Leicester, LE1 7RH, United Kingdom; Institute of Earth Surface Dynamics, Geopolis, University of Lausanne, Quartier UNIL-Mouline, Bâtiment Géopolis, Lausanne, CH-1015, Switzerland; African Centre for Coastal Palaeoscience, Nelson Mandela University, Port Elizabeth, 6031, South Africa; Department of Biological Sciences, University of Cape Town, Rondebosch, 7700, South Africa; School of Natural and Built Environment, Queen's University Belfast, Northern Ireland, Belfast, BT7 1NN, United Kingdom
推荐引用方式 GB/T 7714	Chase B.M.,Boom A.,Carr A.S.,et al. Extreme hydroclimate response gradients within the western Cape Floristic region of South Africa since the Last Glacial Maximum[J],2019,219.
APA	Chase B.M..,Boom A..,Carr A.S..,Chevalier M..,Quick L.J..,...&Reimer P.J..(2019).Extreme hydroclimate response gradients within the western Cape Floristic region of South Africa since the Last Glacial Maximum.Quaternary Science Reviews,219.
MLA	Chase B.M.,et al."Extreme hydroclimate response gradients within the western Cape Floristic region of South Africa since the Last Glacial Maximum".Quaternary Science Reviews 219(2019).