气候变化领域集成服务门户(CCPortal): Fire mosaics and habitat choice in nomadic foragers

CCPortal

DOI	10.1073/pnas.1921709117
	Fire mosaics and habitat choice in nomadic foragers
	Bird R.B.; McGuire C.; Bird D.W.; Price M.H.; Zeanah D.; Nimmo D.G.
发表日期	2020
ISSN	0027-8424
起始页码	12904
结束页码	12914
卷号	117 期号:23
英文摘要	In the mid-1950s Western Desert of Australia, Aboriginal populations were in decline as families left for ration depots, cattle stations, and mission settlements. In the context of reduced population density, an ideal free-distribution model predicts landscape use should contract to the most productive habitats, and people should avoid areas that show more signs of extensive prior use. However, ecological or social facilitation due to Allee effects (positive density dependence) would predict that the intensity of past habitat use should correlate positively with habitat use. We analyzed fire footprints and fire mosaics from the accumulation of several years of landscape use visible on a 35,300-km2 mosaic of aerial photographs covering much of contemporary Indigenous Martu Native Title Lands imaged between May and August 1953. Structural equation modeling revealed that, consistent with an Allee ideal free distribution, there was a positive relationship between the extent of fire mosaics and the intensity of recent use, and this was consistent across habitats regardless of their quality. Fire mosaics build up in regions with low cost of access to water, high intrinsic food availability, and good access to trade opportunities; these mosaics (constrained by water access during the winter) then draw people back in subsequent years or seasons, largely independent of intrinsic habitat quality. Our results suggest that the positive feedback effects of landscape burning can substantially change the way people value landscapes, affecting mobility and settlement by increasing sedentism and local population density. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Historical ecology; Hunter-gatherer mobility; Ideal free distribution; Niche construction; Positive density dependence
语种	英语
scopus关键词	animal hunting; Article; Australia; controlled study; fire; food availability; forager; habitat quality; habitat use; human activities; land use; lizard; monitor lizard; population density; priority journal; seasonal variation; spatial analysis; summer; vegetation; water availability; water supply; winter; ecosystem; environmental protection; fire; human; Oceanic ancestry group; territoriality; Australia; Conservation of Natural Resources; Ecosystem; Fires; Humans; Oceanic Ancestry Group; Population Density; Territoriality
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160932
作者单位	Bird, R.B., Department of Anthropology, Pennsylvania State University, University Park, PA 16801, United States; McGuire, C., Department of Anthropology, Pennsylvania State University, University Park, PA 16801, United States; Bird, D.W., Department of Anthropology, Pennsylvania State University, University Park, PA 16801, United States; Price, M.H., Santa Fe Institute, Santa Fe, NM 87501, United States; Zeanah, D., Department of Anthropology, California State University, Sacramento, CA 95819, United States; Nimmo, D.G., Institute for Land, Water and Society, Charles Sturt University, Albury, NSW 2640, Australia
推荐引用方式 GB/T 7714	Bird R.B.,McGuire C.,Bird D.W.,et al. Fire mosaics and habitat choice in nomadic foragers[J],2020,117(23).
APA	Bird R.B.,McGuire C.,Bird D.W.,Price M.H.,Zeanah D.,&Nimmo D.G..(2020).Fire mosaics and habitat choice in nomadic foragers.Proceedings of the National Academy of Sciences of the United States of America,117(23).
MLA	Bird R.B.,et al."Fire mosaics and habitat choice in nomadic foragers".Proceedings of the National Academy of Sciences of the United States of America 117.23(2020).