气候变化领域集成服务门户(CCPortal): Sponge spicule and phytolith evidence for Late Quaternary environmental changes in the tropical Pantanal wetlands of western Brazil

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DOI	10.1016/j.palaeo.2019.01.015
	Sponge spicule and phytolith evidence for Late Quaternary environmental changes in the tropical Pantanal wetlands of western Brazil
	Rasbold G.G.; McGlue M.M.; Stevaux J.C.; Parolin M.; Silva A.; Bergier I.
发表日期	2019
ISSN	0031-0182
起始页码	119
结束页码	133
卷号	518
英文摘要	The environmental history of the central Pantanal wetlands of western Brazil is inferred for the last 19 kyrs based on a multi-indicator paleolimnological analysis of a sediment core from Lake Negra. The core, dated by 14 C and OSL, shows variations in the abundance, diversity, and preservation of sponge spicules and phytoliths through time, consistent with changing aquatic environments. In the late Pleistocene, Lake Negra was influenced by a strong monsoon and fluvial depositional processes, whereas in the Holocene, there was a drier interval where the lake was more isolated on the floodplain. Hiatuses in the stratigraphy resulted from both wet and dry conditions, through fluvial channel scour or subaerial exposure of the lake floor, respectively. Data suggest that floodplain lakes in the Pantanal wetlands and similar riverine wetlands respond in a complex and, at times, indirect manner to climate change, and the dynamics of the adjacent fluvial system must be accounted for when interpreting paleohydrology and vegetation patterns. © 2019 Elsevier B.V.
英文关键词	Biological indicators; Lake Negra; Lake sediments; Paleolimnology; Wetlands
语种	英语
scopus关键词	bioindicator; climate change; environmental change; environmental history; environmental indicator; floodplain; fluvial deposit; lacustrine deposit; monsoon; paleoenvironment; paleohydrology; paleolimnology; phytolith; Pleistocene; radiocarbon dating; sediment core; spicule; sponge; tropical environment; wetland; Brazil; Pantanal
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151067
作者单位	Graduate Program in Ecology of Inland Water Ecosystems, State University of MaringáParaná, Brazil; Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY, United States; Graduate Program in Geography, Federal University of Mato Grosso do Sul, Três Lagoas, Mato Grosso do Sul, Brazil; Laboratory of Paleoenvironmental Studies, State University of Paraná, Campo Mourão, Paraná, Brazil; Department of Geography, Federal University of Mato Grosso do Sul-CPAN, Corumbá, Mato Grosso do Sul, Brazil; Embrapa Pantanal, Corumbá, Mato Grosso do Sul, Brazil
推荐引用方式 GB/T 7714	Rasbold G.G.,McGlue M.M.,Stevaux J.C.,et al. Sponge spicule and phytolith evidence for Late Quaternary environmental changes in the tropical Pantanal wetlands of western Brazil[J],2019,518.
APA	Rasbold G.G.,McGlue M.M.,Stevaux J.C.,Parolin M.,Silva A.,&Bergier I..(2019).Sponge spicule and phytolith evidence for Late Quaternary environmental changes in the tropical Pantanal wetlands of western Brazil.Palaeogeography, Palaeoclimatology, Palaeoecology,518.
MLA	Rasbold G.G.,et al."Sponge spicule and phytolith evidence for Late Quaternary environmental changes in the tropical Pantanal wetlands of western Brazil".Palaeogeography, Palaeoclimatology, Palaeoecology 518(2019).