气候变化领域集成服务门户(CCPortal): Climate change, not human population growth, correlates with Late Quaternary megafauna declines in North America

CCPortal

DOI	10.1038/s41467-021-21201-8
	Climate change, not human population growth, correlates with Late Quaternary megafauna declines in North America
	Stewart M.; Carleton W.C.; Groucutt H.S.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	The disappearance of many North American megafauna at the end of the Pleistocene is a contentious topic. While the proposed causes for megafaunal extinction are varied, most researchers fall into three broad camps emphasizing human overhunting, climate change, or some combination of the two. Understanding the cause of megafaunal extinctions requires the analysis of through-time relationships between climate change and megafauna and human population dynamics. To do so, many researchers have used summed probability density functions (SPDFs) as a proxy for through-time fluctuations in human and megafauna population sizes. SPDFs, however, conflate process variation with the chronological uncertainty inherent in radiocarbon dates. Recently, a new Bayesian regression technique was developed that overcomes this problem—Radiocarbon-dated Event-Count (REC) Modelling. Here we employ REC models to test whether declines in North American megafauna species could be best explained by climate changes, increases in human population densities, or both, using the largest available database of megafauna and human radiocarbon dates. Our results suggest that there is currently no evidence for a persistent through-time relationship between human and megafauna population levels in North America. There is, however, evidence that decreases in global temperature correlated with megafauna population declines. © 2021, The Author(s).
语种	英语
scopus关键词	climate effect; extinction risk; Pleistocene; population decline; population growth; probability density function; Quaternary; radiocarbon dating; Article; climate change; human; Late Quaternary; North America; population dynamics; population growth; population size; temperature sensitivity; animal; archeology; geography; mammoth; mastodon; physiology; regression analysis; species extinction; theoretical model; time factor; North America; oxygen; Oxygen-18; Animals; Archaeology; Climate Change; Extinction, Biological; Geography; Humans; Mammoths; Mastodons; Models, Theoretical; North America; Oxygen Isotopes; Population Growth; Regression Analysis; Time Factors
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250768
作者单位	Extreme Events Research Group, Max Planck Institutes for Chemical Ecology, the Science of Human History, and Biogeochemistry, Jena, Germany; Department of Archaeology, Max Planck Institute for the Science of Human History, Jena, Germany; Institute of Prehistoric Archaeology, University of Cologne, Cologne, Germany
推荐引用方式 GB/T 7714	Stewart M.,Carleton W.C.,Groucutt H.S.. Climate change, not human population growth, correlates with Late Quaternary megafauna declines in North America[J],2021,12(1).
APA	Stewart M.,Carleton W.C.,&Groucutt H.S..(2021).Climate change, not human population growth, correlates with Late Quaternary megafauna declines in North America.Nature Communications,12(1).
MLA	Stewart M.,et al."Climate change, not human population growth, correlates with Late Quaternary megafauna declines in North America".Nature Communications 12.1(2021).