气候变化领域集成服务门户(CCPortal): Disturbance maintains alternative biome states

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DOI	10.1111/ele.12537
	Disturbance maintains alternative biome states
	Dantas V.de.L.; Hirota M.; Oliveira R.S.; Pausas J.G.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:1
英文摘要	Understanding the mechanisms controlling the distribution of biomes remains a challenge. Although tropical biome distribution has traditionally been explained by climate and soil, contrasting vegetation types often occur as mosaics with sharp boundaries under very similar environmental conditions. While evidence suggests that these biomes are alternative states, empirical broad-scale support to this hypothesis is still lacking. Using community-level field data and a novel resource-niche overlap approach, we show that, for a wide range of environmental conditions, fire feedbacks maintain savannas and forests as alternative biome states in both the Neotropics and the Afrotropics. In addition, wooded grasslands and savannas occurred as alternative grassy states in the Afrotropics, depending on the relative importance of fire and herbivory feedbacks. These results are consistent with landscape scale evidence and suggest that disturbance is a general factor driving and maintaining alternative biome states and vegetation mosaics in the tropics. Copyright © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	Cerrado; Feedbacks; Fire; Forest; Herbivory; Mosaic; Savanna; Savanna-forest transition; Thresholds; Tropical
学科领域	Afrotropic Ecozone; biome; cerrado; environmental conditions; environmental factor; forest ecosystem; forest fire; herbivory; landscape ecology; Neotropic Ecozone; niche overlap; savanna; threshold; tropical environment; tropical region; vegetation type; soil; Africa south of the Sahara; chemistry; fire; forest; geography; grassland; physiology; soil; tree; tropic climate; Western Hemisphere; Africa South of the Sahara; Americas; Fires; Forests; Geography; Grassland; Soil; Trees; Tropical Climate
语种	英语
scopus关键词	Afrotropic Ecozone; biome; cerrado; environmental conditions; environmental factor; forest ecosystem; forest fire; herbivory; landscape ecology; Neotropic Ecozone; niche overlap; savanna; threshold; tropical environment; tropical region; vegetation type; soil; Africa south of the Sahara; chemistry; fire; forest; geography; grassland; physiology; soil; tree; tropic climate; Western Hemisphere; Africa South of the Sahara; Americas; Fires; Forests; Geography; Grassland; Soil; Trees; Tropical Climate
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118603
作者单位	Department of Plant Biology, Functional Ecology Laboratory, Institute of Biology, University of Campinas - UNICAMP, P.O. Box 6109, Campinas, 13083-970, Brazil; Center for Physical and Mathematical Sciences, Federal University of Santa Catarina, Santa Catarina, 88040-900, Brazil; CIDE-CSIC, Ctra. Naquera Km. 4.5 (IVIA), Montcada, Valencia, 46113, Spain
推荐引用方式 GB/T 7714	Dantas V.de.L.,Hirota M.,Oliveira R.S.,et al. Disturbance maintains alternative biome states[J],2016,19(1).
APA	Dantas V.de.L.,Hirota M.,Oliveira R.S.,&Pausas J.G..(2016).Disturbance maintains alternative biome states.Ecology Letters,19(1).
MLA	Dantas V.de.L.,et al."Disturbance maintains alternative biome states".Ecology Letters 19.1(2016).