气候变化领域集成服务门户(CCPortal): Chronology of Terra Firme formation in Amazonian lowlands reveals a dynamic Quaternary landscape

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DOI	10.1016/j.quascirev.2019.03.008
	Chronology of Terra Firme formation in Amazonian lowlands reveals a dynamic Quaternary landscape
	Pupim F.N.; Sawakuchi A.O.; Almeida R.P.; Ribas C.C.; Kern A.K.; Hartmann G.A.; Chiessi C.M.; Tamura L.N.; Mineli T.D.; Savian J.F.; Grohmann C.H.; Bertassoli D.J.; Jr.; Stern A.G.; Cruz F.W.; Cracraft J.
发表日期	2019
ISSN	0277-3791
起始页码	154
结束页码	163
卷号	210
英文摘要	In the Amazonian lowlands, the shift from a large wetland dominated by flooded forests (Várzea) to the modern incised valleys bounded by extensive areas of non-flooded forests (Terra Firme) is considered a key driver of the Amazonian mega-biodiversity. Dating the sedimentary beds covered by Terra Firme forest is crucial to constrain the timing of such landscape change. Here we determined the formation ages of widespread regions of Terra Firme substrates in central Amazonian lowlands combining optically stimulated luminescence (OSL) dating, magnetostratigraphy and palinostratigraphy. Our data suggest a very dynamic fluvial system leading to a recent expansion of Terra Firme forests and retraction of Várzea forests during the late Pleistocene. The shift from an extensively flooded to non-flooded surface resulted from river incision around 45-35 ka, which potentially influenced the distribution of taxa by expanding available habitat, creating new barriers to dispersal, or changing the permeability of previous barriers. Transitions between flooded and non-flooded landscapes may have driven diversification and caused changes to species distributions, contributing to the high species diversity and biogeographic patterns currently found in the region. The late Quaternary evolution of Terra Firme substrates reveals that physical landscape changes play a major role in shaping biotic habitats even in the 10 4 –10 5 years time-scales. © 2019 Elsevier Ltd
英文关键词	Amazon river; Amazonia; Fluvial evolution; Paleogeography; Quaternary geochronology
语种	英语
scopus关键词	Biodiversity; Ecosystems; Forestry; Geochronology; Geomorphology; Luminescence; Population distribution; Amazon river; Amazonia; Fluvial evolution; Paleogeography; Quaternary geochronologies; Floods; biodiversity; biogeographical region; chronology; dating method; dispersal; geochronology; habitat availability; landscape; landscape change; luminescence; magnetostratigraphy; paleogeography; Pleistocene; population distribution; Quaternary; species diversity; wetland; Amazon River; Amazonia
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/151978
作者单位	Departamento de Ciências Ambientais, Universidade Federal de São Paulo, Diadema, SP, Brazil; Instituto de Geociências, Universidade de São Paulo, São Paulo, SP, Brazil; Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brazil; Instituto de Geociências, Universidade Estadual de Campinas, Campinas, SP, Brazil; Escola de Artes, Ciências e Humanidades, Universidade de São Paulo, São Paulo, SP, Brazil; Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Instituto de Energia e Ambiente, Universidade de São Paulo, São Paulo, SP, Brazil; Department of Ornithology, American Museum of Natural History, New York, NY, United States
推荐引用方式 GB/T 7714	Pupim F.N.,Sawakuchi A.O.,Almeida R.P.,et al. Chronology of Terra Firme formation in Amazonian lowlands reveals a dynamic Quaternary landscape[J],2019,210.
APA	Pupim F.N..,Sawakuchi A.O..,Almeida R.P..,Ribas C.C..,Kern A.K..,...&Cracraft J..(2019).Chronology of Terra Firme formation in Amazonian lowlands reveals a dynamic Quaternary landscape.Quaternary Science Reviews,210.
MLA	Pupim F.N.,et al."Chronology of Terra Firme formation in Amazonian lowlands reveals a dynamic Quaternary landscape".Quaternary Science Reviews 210(2019).