气候变化领域集成服务门户(CCPortal): The adoption of agropastoralism and increased ENSO frequency in the Andes

CCPortal

DOI	10.1016/j.quascirev.2020.106471
	The adoption of agropastoralism and increased ENSO frequency in the Andes
	Nascimento M.N.; Mosblech N.A.S.; Raczka M.F.; Baskin S.; Manrique K.E.; Wilger J.; Giosan L.; Benito X.; Bush M.B.
发表日期	2020
ISSN	0277-3791
卷号	243
英文摘要	Humans have been present in the Andes since about 12,000 calibrated years before present (cal yr BP), transitioning from hunter-gatherers to agropastoralist societies in the mid-Holocene. Yet, the timing and effects of this change in behavior on the ecosystem are largely unknown. Using titanium from XRF analysis, loss-on-ignition (LOI), fossil pollen, Sporormiella, and charcoal, we present a high-resolution 12,000-yr paleoecological history of Lake Llaviucu, a mid-elevation lake in the Ecuadorian Andes. For the entire period of study, humans were active in this landscape, with signs of agropastoralism being present since c. 6100 cal yr BP. Apparent ENSO activity, inferred from titanium inputs to the sediment is also heightened at c. 6100 cal yr BP. A trajectory of increasing landuse seems to have peaked in terms of maize production between c. 2900 and 800 cal yr BP. Thereafter, larger abundances of Sporormiella spores suggest that pastoralism was of increasing importance; a pattern disrupted by European arrival. Apparent peaks in El Niño Southern Oscillation (ENSO) appears to be linked to fire and maize frequency. We investigated the relationship between the Lake Llaviucu record and that of nearby Lake Pallcacocha, which is often cited as providing a regional ENSO history. © 2020 Elsevier Ltd
英文关键词	Domestication; El Niño Southern Oscillation; Human settlement; Maize; Mid-holocene dry event; Paleoecology; Pollen
语种	英语
scopus关键词	Atmospheric pressure; Charcoal; Lakes; Titanium; Fossil pollens; High resolution; Holocenes; Loss on ignition; Maize production; Southern oscillation; XRF analysis; Climatology; El Nino-Southern Oscillation; fossil record; frequency analysis; historical record; Holocene; hunter-gatherer; paleoecology; pastoralism; Andes; Ecuador; Preussia (ascomycete); Zea mays
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/151373
作者单位	Florida Institute of Technology, Institute for Global Ecology, Neotropical Paleoecology Research Group (NPRG), Melbourne, FL, United States; University of Reading, Department of Geography and Environmental Sciences, School of Archaeology, Geography and Environmental ScienceReading, United Kingdom; Woods Hole Oceanographic Institution, Geology & Geophysics, Woods Hole, MA, United States; National Socio-Environmental Synthesis Center (SESYNC), University of MarylandMD, United States
推荐引用方式 GB/T 7714	Nascimento M.N.,Mosblech N.A.S.,Raczka M.F.,et al. The adoption of agropastoralism and increased ENSO frequency in the Andes[J],2020,243.
APA	Nascimento M.N..,Mosblech N.A.S..,Raczka M.F..,Baskin S..,Manrique K.E..,...&Bush M.B..(2020).The adoption of agropastoralism and increased ENSO frequency in the Andes.Quaternary Science Reviews,243.
MLA	Nascimento M.N.,et al."The adoption of agropastoralism and increased ENSO frequency in the Andes".Quaternary Science Reviews 243(2020).