气候变化领域集成服务门户(CCPortal): Comparison of climate and environment on the edge of the Palaeo-Agulhas Plain to the Little Karoo (South Africa) in Marine Isotope Stages 5

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DOI	10.1016/j.quascirev.2019.06.025
	Comparison of climate and environment on the edge of the Palaeo-Agulhas Plain to the Little Karoo (South Africa) in Marine Isotope Stages 5–3 as indicated by speleothems
	Braun K.; Bar-Matthews M.; Matthews A.; Ayalon A.; Zilberman T.; Cowling R.M.; Fisher E.C.; Herries A.I.R.; Brink J.S.; Marean C.W.
发表日期	2020
ISSN	0277-3791
卷号	235
英文摘要	Given the steep present-day climatic gradients in southern South Africa, comparative studies of its coastal and inland paleoclimate provide important insight into the region's spatial climate dynamics. We present a comparative study of new speleothem stable oxygen (δ18O) and carbon (δ13C) isotopic composition from Efflux Cave (EC; 113–19 ka, hiatus between 105 and 94 ka) in the Little Karoo inland basin and Herolds Bay Cave (HBC; 93–62 ka) at the boundary between the Cape coastal lowlands and the Palaeo-Agulhas Plain. Gaussian kernel based cross-correlation analyses against palaeoclimate proxy records show that rainfall seasonality at EC is related to rainfall amount in the South African interior, whereas HBC is similar to the South African east coast. Our new proxy records, corroborated by archaeological evidence from the Cape coastal lowlands and the Little Karoo, suggest that in both regions, surface water was readily available and grassland ecosystems with variable amounts of C4 and C3 grasses as well as fynbos communities could be found nearby. Cross-correlation analyses of the new records from EC and HBC compared to previously published speleothem records from southern South Africa show only limited statistical correlation. However, there are some similarities in overall trends of palaeoclimate change in the Cape coastal lowlands and the Little Karoo whereby Marine Isotope Stage (MIS) 5b (mainly Greenland Interstadial 22) and 4 generally have more summer rainfall and higher abundances of C4 vegetation than MIS 5a and MIS 3. © 2019 Elsevier Ltd
英文关键词	Cape Floristic Region; Palaeo-Agulhas Plain; Palaeoclimatology; Pleistocene; South Africa; Speleothems; Stable isotopes
语种	英语
scopus关键词	Caves; Correlation methods; Ecosystems; Isotopes; Rain; Surface waters; Cape Floristic Region; Palaeo-Agulhas Plain; Palaeoclimatology; Pleistocene; South Africa; Speleothems; Stable isotopes; Glacial geology; archaeological evidence; C3 plant; C4 plant; carbon isotope; climate variation; comparative study; correlation; fynbos; grassland; isotopic composition; marine isotope stage; oxygen isotope; paleoclimate; proxy climate record; seasonality; speleothem; stable isotope; Agulhas Plain; Arctic; Greenland; Karoo; Little Karoo; South Africa; South Africa; Western Cape; Poaceae
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/151520
作者单位	Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, PO Box 874101, Tempe, AZ 85287, United States; African Centre for Coastal Palaeoscience, Nelson Mandela University, PO Box 77000, Port Elizabeth, Eastern Cape 6031, South Africa; Geological Survey of Israel, 32 Yesha'yahu Leibowitz St., Jerusalem, 6962100, Israel; The Fredy and Nadine Herrmann Institute of Earth Sciences, The Hebrew University, Edmond J Safra Campus – Givat Ram, Jerusalem, 9190401, Israel; Department of Archaeology and History, La Trobe University, Australia; Palaeo-Research Institute, University of Johannesburg, South Africa; South African National Museum, Bloemfontein, South Africa
推荐引用方式 GB/T 7714	Braun K.,Bar-Matthews M.,Matthews A.,等. Comparison of climate and environment on the edge of the Palaeo-Agulhas Plain to the Little Karoo (South Africa) in Marine Isotope Stages 5–3 as indicated by speleothems[J],2020,235.
APA	Braun K..,Bar-Matthews M..,Matthews A..,Ayalon A..,Zilberman T..,...&Marean C.W..(2020).Comparison of climate and environment on the edge of the Palaeo-Agulhas Plain to the Little Karoo (South Africa) in Marine Isotope Stages 5–3 as indicated by speleothems.Quaternary Science Reviews,235.
MLA	Braun K.,et al."Comparison of climate and environment on the edge of the Palaeo-Agulhas Plain to the Little Karoo (South Africa) in Marine Isotope Stages 5–3 as indicated by speleothems".Quaternary Science Reviews 235(2020).