气候变化领域集成服务门户(CCPortal): Global hunter-gatherer population densities constrained by influence of seasonality on diet composition

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DOI	10.1038/s41559-021-01548-3
	Global hunter-gatherer population densities constrained by influence of seasonality on diet composition
	Zhu D.; Galbraith E.D.; Reyes-García V.; Ciais P.
发表日期	2021
ISSN	2397-334X
起始页码	1536
结束页码	1545
卷号	5 期号:11
英文摘要	The dependence of hunter-gatherers on local net primary production (NPP) to provide food played a major role in shaping long-term human population dynamics. Observations of contemporary hunter-gatherers have shown an overall correlation between population density and annual NPP but with a 1,000-fold variation in population density per unit NPP that remains unexplained. Here, we build a process-based hunter-gatherer population model embedded within a global terrestrial biosphere model, which explicitly addresses the extraction of NPP through dynamically allocated hunting and gathering activities. The emergent results reveal a strong, previously unrecognized effect of seasonality on population density via diet composition, whereby hunter-gatherers consume high fractions of meat in regions where growing seasons are short, leading to greatly reduced population density due to trophic inefficiency. This seasonal carnivory bottleneck largely explains the wide variation in population density per unit NPP and questions the prevailing usage of annual NPP as the proxy of carrying capacity for ancient humans. Our process-based approach has the potential to greatly refine our understanding of dynamical responses of ancient human populations to past environmental changes. ? 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	animal; diet; hominid; human; population density; population dynamics; Animals; Diet; Hominidae; Humans; Hunting; Population Density; Population Dynamics
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256831
作者单位	Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China; Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), Universitat Autònoma de Barcelona, Barcelona, Spain; Department of Earth and Planetary Sciences, McGill University, Montreal, QC, Canada; ICREA (Catalan Institution for Research and Advanced Studies), Barcelona, Spain; Laboratoire des Sciences du Climat et de l’Environnement, IPSL-LSCE, CEA-CNRS-UVSQ-UPSACLAY, Gif sur Yvette, France; Climate and Atmosphere Research Center (CARE-C), The Cyprus Institute, Nicosia, Cyprus
推荐引用方式 GB/T 7714	Zhu D.,Galbraith E.D.,Reyes-García V.,et al. Global hunter-gatherer population densities constrained by influence of seasonality on diet composition[J],2021,5(11).
APA	Zhu D.,Galbraith E.D.,Reyes-García V.,&Ciais P..(2021).Global hunter-gatherer population densities constrained by influence of seasonality on diet composition.Nature Ecology & Evolution,5(11).
MLA	Zhu D.,et al."Global hunter-gatherer population densities constrained by influence of seasonality on diet composition".Nature Ecology & Evolution 5.11(2021).