Forest community assembly is driven by different strata-dependent mechanisms along an elevational gradient

doi:10.1111/jbi.13669

	Forest community assembly is driven by different strata-dependent mechanisms along an elevational gradient
	Luo, Ya-Huang 1,2; Cadotte, Marc W.3; Burgess, Kevin S.4; Liu, Jie1 ; Tan, Shao-Lin 1,5; Xu, Kun 6; Li, De-Zhu2,5 ; Gao, Lian-Ming1,6
通讯作者	Li, De-Zhu(dzl@mail.kib.ac.cn) ; Gao, Lian-Ming(gaolm@mail.kib.ac.cn)
	2019-07-29
发表期刊	JOURNAL OF BIOGEOGRAPHY
ISSN	0305-0270
页码	14
摘要	Aim The mechanisms driving forest community assembly along elevational gradients remain elusive. The distinct strata in heterogeneous forest are subject to differing assembly mechanisms. This study aims to evaluate how different ecological mechanisms driving forest community assembly across strata and spatial scales, and to identify how these assemblages respond to different abiotic or biotic variables along an elevational gradient. Location Yulong Mountain within Hengduan Mountains, Southwest China. Taxon Seed plants. Methods We sampled plant species along a 1,200 m elevational gradient across forest strata (trees, shrubs and herbs) at different spatial scales (neighbourhood and community). We integrated phylogenetic and functional diversity to disentangle the roles of ecological mechanisms in structuring community assembly. We also determined the relative effects of climatic, soil and biotic variables and their interactions on these community assemblages. Results The phylogenetic and functional diversity of trees were lower at the extremes of the elevational gradient, where they were constrained by water availability or temperature. While communities with higher species diversity exhibited an overdispersed structure at mid-elevations. For shrubs, overdispersion was exhibited at high elevations despite low species richness, which could be consistent with facilitative interactions or competition exclusion. However, most communities of herbs appear to have a markedly random structure, despite some incongruence between phylogenetic divergence and functional convergence, as well as influences from overstorey trees and local light conditions. The relative effects of abiotic variables on community structure were larger at the community scale than at the neighbourhood scale. Main conclusions Our study emphasises the importance of considering phylogenies and traits in understanding the strata- and scale-dependent mechanisms of forest community assembly. Collectively, results indicate that contrasting assembly mechanisms interact across different strata along elevational gradients to shape diverse forest communities.
关键词	environmental filtering facilitation functional diversity limiting similarity phylogenetic diversity subalpine forest
DOI	10.1111/jbi.13669
收录类别	SCI
语种	英语
WOS记录号	WOS:000479710600001
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/68349
专题	中国科学院东亚植物多样性与生物地理学重点实验室
通讯作者	Li, De-Zhu; Gao, Lian-Ming
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species Southwest China, Kunming, Yunnan, Peoples R China 3.Univ Toronto, Univ Toronto Scarborough & Ecol & Evolutionary Bi, Biol Sci, Toronto, ON, Canada 4.Univ Syst Georgia, Columbus State Univ, Coll Letters & Sci, Dept Biol, Columbus, GA USA 5.Univ Chinese Acad Sci, Coll Life Sci, Kunming, Yunnan, Peoples R China 6.Chinese Acad Sci, Kunming Inst Bot, Lijiang Forest Ecosyst Res Stn, Lijiang, Peoples R China
推荐引用方式 GB/T 7714	Luo, Ya-Huang,Cadotte, Marc W.,Burgess, Kevin S.,et al. Forest community assembly is driven by different strata-dependent mechanisms along an elevational gradient[J]. JOURNAL OF BIOGEOGRAPHY,2019:14.
APA	Luo, Ya-Huang.,Cadotte, Marc W..,Burgess, Kevin S..,Liu, Jie.,Tan, Shao-Lin.,...&Gao, Lian-Ming.(2019).Forest community assembly is driven by different strata-dependent mechanisms along an elevational gradient.JOURNAL OF BIOGEOGRAPHY,14.
MLA	Luo, Ya-Huang,et al."Forest community assembly is driven by different strata-dependent mechanisms along an elevational gradient".JOURNAL OF BIOGEOGRAPHY (2019):14.

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