Stochastic dilution effects weaken deterministic effects of niche-based processes in species rich forests

doi:10.1890/14-2357.1

	Stochastic dilution effects weaken deterministic effects of niche-based processes in species rich forests
	Wang, Xugao ; Wiegand, Thorsten 1,2; Kraft, Nathan J. B.; Swenson, Nathan G.; Davies, Stuart J.; Hao, Zhanqing ; Howe, Robert 5; Lin, Yiching 6; Ma, Keping7 ; Mi, Xiangcheng 7; Su, Sheng-Hsin ; Sun, I-Fang ; Wolf, Amy 5
	2016
发表期刊	ECOLOGY
ISSN	0012-9658
卷号	97 期号:2 页码:347-360
摘要	Recent theory predicts that stochastic dilution effects may result in species-rich communities with statistically independent species spatial distributions, even if the underlying ecological processes structuring the community are driven by deterministic niche differences. Stochastic dilution is a consequence of the stochastic geometry of biodiversity where the identities of the nearest neighbors of individuals of a given species are largely unpredictable. Under such circumstances, the outcome of deterministic species interactions may vary greatly among individuals of a given species. Consequently, nonrandom patterns in the biotic neighborhoods of species, which might be expected from coexistence or community assembly theory (e.g., individuals of a given species are neighbored by phylogenetically similar species), are weakened or do not emerge, resulting in statistical independence of species spatial distributions. We used data on phylogenetic and functional similarity of tree species in five large forest dynamics plots located across a gradient of species richness to test predictions of the stochastic dilution hypothesis. To quantify the biotic neighborhood of a focal species we used the mean phylogenetic (or functional) dissimilarity of the individuals of the focal species to all species within a local neighborhood. We then compared the biotic neighborhood of species to predictions from stochastic null models to test if a focal species was surrounded by more or less similar species than expected by chance. The proportions of focal species that showed spatial independence with respect to their biotic neighborhoods increased with total species richness. Locally dominant, high-abundance species were more likely to be surrounded by species that were statistically more similar or more dissimilar than expected by chance. Our results suggest that stochasticity may play a stronger role in shaping the spatial structure of species rich tropical forest communities than it does in species poorer forests. These findings represent an important step towards understanding the factors that govern the spatial configuration of local biotic communities. The stochastic dilution effect is a simple geometric mechanism that can explain why species' spatial distributions in species-rich communities approximate independence from their biotic neighborhood, even if deterministic niche processes are in effect.
关键词	coexistence theory forest dynamics plot functional dissimilarity habitat filtering individual species-area relationship null model pattern reconstruction phylogenetic dissimilarity point pattern analysis species interaction stochastic dilution hypothesis
学科领域	Ecology
DOI	10.1890/14-2357.1
收录类别	SCI
语种	英语
WOS关键词	PHYLOGENETIC STRUCTURE ; SEEDLING MORTALITY ; PLANT-COMMUNITIES ; FUNCTIONAL TRAIT ; BETA DIVERSITY ; TEMPERATE ; PATTERNS ; ASSOCIATIONS ; CONSEQUENCES ; COEXISTENCE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000371439800008
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1939-9170
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370444, 31570432] ; Chinese Academy of SciencesChinese Academy of Sciences [151221KYSB20130003] ; ERCEuropean Research Council (ERC)European Commission [233066] ; United States National Science FoundationNational Science Foundation (NSF) [DEB-1046113] ; Direct For Biological SciencesNational Science Foundation (NSF)NSF - Directorate for Biological Sciences (BIO) [1354741, 1545761] Funding Source: National Science Foundation
作者邮箱	wangxg@iae.ac.cn
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25233
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 2.UFZ Helmholtz Ctr Environm Research UFZ, Dept Ecol Modelling, Permoserstr 15, D-04318 Leipzig, Germany 3.German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany 4.Kraft, Nathan J. B.; Swenson, Nathan G.] Univ Maryland, Dept Biol, Biol Psychol Bldg 144,Room 1210, College Pk, MD USA 5.Davies, Stuart J.] Smithsonian Inst, Ctr Trop Forest Sci, Smithsonian Inst Global Earth Observ, POB 37012, Washington, DC 20013 USA 6.Univ Wisconsin, Dept Nat & Appl Sci, 2420 Nicolet Dr, Green Bay, WI 54311 USA 7.Tunghai Univ, Dept Life Sci, Taichung 40704, Taiwan 8.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China 9.Taiwan Forestry Res Inst, Taipei 10066, Taiwan 10.Natl Dong Hwa Univ, Dept Nat Resources & Environm Studies, Hualien 97401, Taiwan
推荐引用方式 GB/T 7714	Wang, Xugao,Wiegand, Thorsten,Kraft, Nathan J. B.,et al. Stochastic dilution effects weaken deterministic effects of niche-based processes in species rich forests[J]. ECOLOGY,2016,97(2):347-360.
APA	Wang, Xugao.,Wiegand, Thorsten.,Kraft, Nathan J. B..,Swenson, Nathan G..,Davies, Stuart J..,...&Wolf, Amy.(2016).Stochastic dilution effects weaken deterministic effects of niche-based processes in species rich forests.ECOLOGY,97(2),347-360.
MLA	Wang, Xugao,et al."Stochastic dilution effects weaken deterministic effects of niche-based processes in species rich forests".ECOLOGY 97.2(2016):347-360.

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