The Relative Importance of Janzen-Connell Effects in Influencing the Spatial Patterns at the Gutianshan Subtropical Forest

doi:10.1371/journal.pone.0074560

	The Relative Importance of Janzen-Connell Effects in Influencing the Spatial Patterns at the Gutianshan Subtropical Forest
	Zhu, Yan ; Getzin, Stephan 1; Wiegand, Thorsten 1; Ren, Haibao ; Ma, Keping
	2013
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	8 期号:9
摘要	The Janzen-Connell hypothesis is among the most important theories put forward to explain species coexistence in species-rich communities. However, the relative importance of Janzen-Connell effects with respect to other prominent mechanisms of community assembly, such as dispersal limitation, self-thinning due to competition, or habitat association, is largely unresolved. Here we use data from a 24-ha Gutianshan subtropical forest to address it. First we tested for significant associations of adults, juveniles, and saplings with environmental variables. Second we evaluated if aggregation decreased with life stage. In a third analysis we approximately factored out the effect of habitat association and comprehensively analyzed the spatial associations of intraspecific adults and offspring (saplings, juveniles) of 46 common species at continuous neighborhood distances. We found i) that, except for one, all species were associated with at least one environmental variable during at least one of their life stages, but the frequency of significant habitat associations declined with increasing life stage; ii) a decline in aggregation with increasing life stage that was strongest from juveniles to adults; and iii) intraspecific adult-offspring associations were dominated by positive relationships at neighborhood distances up to 10 m. Our results suggest that Janzen-Connell effects were not the dominant mechanisms in structuring the spatial patterns of established trees in the subtropical Gutianshan forest. The spatial patterns may rather reflect the joint effects of size-dependent self-thinning, dispersal limitation and habitat associations. Our findings contribute to a more comprehensive understanding of the relative importance of Janzen-Connell effects in influencing plant community structure under strong topographic heterogeneity.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0074560
收录类别	SCI
语种	英语
WOS关键词	SPECIES-HABITAT ASSOCIATIONS ; BROAD-LEAVED FOREST ; DENSITY-DEPENDENCE ; TREE ; DIVERSITY ; RECRUITMENT ; LIMITATION ; DISPERSAL ; DISTRIBUTIONS ; CONSEQUENCES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000324481600135
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Key Innovation Project of CAS(Chinese Academy of Sciences) ; State Key Laboratory of Vegetation and Environmental Change ; European Research Council (ERC)(European Research Council (ERC)) ; Direct For Biological Sciences ; Division Of Environmental Biology(National Science Foundation (NSF)NSF - Directorate for Biological Sciences (BIO))
作者邮箱	Wiegand, Thorsten/H-5877-2016 ; Wiegand, Thorsten/AAP-9709-2021
作品OA属性	Green Published, Green Submitted, gold, Green Accepted
引用统计	被引频次：21[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/2S10CLM1/27817
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China 2.UFZ Helmholtz Ctr Environm Res, Dept Ecol Modelling, Leipzig, Germany
推荐引用方式 GB/T 7714	Zhu, Yan,Getzin, Stephan,Wiegand, Thorsten,et al. The Relative Importance of Janzen-Connell Effects in Influencing the Spatial Patterns at the Gutianshan Subtropical Forest[J]. PLOS ONE,2013,8(9).
APA	Zhu, Yan,Getzin, Stephan,Wiegand, Thorsten,Ren, Haibao,&Ma, Keping.(2013).The Relative Importance of Janzen-Connell Effects in Influencing the Spatial Patterns at the Gutianshan Subtropical Forest.PLOS ONE,8(9).
MLA	Zhu, Yan,et al."The Relative Importance of Janzen-Connell Effects in Influencing the Spatial Patterns at the Gutianshan Subtropical Forest".PLOS ONE 8.9(2013).

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