气候变化领域集成服务门户(CCPortal): Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community

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DOI	10.1111/ele.12856
	Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community
	Murphy S.J.; Wiegand T.; Comita L.S.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:11
英文摘要	Negative distance dependence (NDisD), or reduced recruitment near adult conspecifics, is thought to explain the astounding diversity of tropical forests. While many studies show greater mortality at near vs. far distances from adults, these studies do not seek to track changes in the peak seedling curve over time, thus limiting our ability to link NDisD to coexistence. Using census data collected over 12 years from central Panama in conjunction with spatial mark-connection functions, we show evidence for NDisD for many species, and find that the peak seedling curve shifts away from conspecific adults over time. We find wide variation in the strength of NDisD, which was correlated with seed size and canopy position, but other life-history traits showed no relationship with variation in NDisD mortality. Our results document shifts in peak seedling densities over time, thus providing evidence for the hypothesized spacing mechanism necessary for diversity maintenance in tropical forests. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	Barro Colorado Island (BCI); dispersal; diversity maintenance; Janzen–Connell; overcompensating; recruitment; species coexistence
学科领域	biodiversity; biological model; forest; growth, development and aging; Panama; physiology; population density; population dynamics; seedling; tree; tropic climate; Biodiversity; Forests; Models, Biological; Panama; Population Density; Population Dynamics; Seedlings; Trees; Tropical Climate
语种	英语
scopus关键词	biodiversity; biological model; forest; growth, development and aging; Panama; physiology; population density; population dynamics; seedling; tree; tropic climate; Biodiversity; Forests; Models, Biological; Panama; Population Density; Population Dynamics; Seedlings; 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/118312
作者单位	Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, 318 W. 12th Avenue, Columbus, OH 43210-1293, United States; School of Forestry and Environmental Studies, Yale University, 195 Prospect Street, New Haven, CT 06511, United States; Department of Ecological Modelling, Helmholtz Centre for Environmental Research—UFZ, Permoserstrasse 15, Leipzig, 04318, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany; Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama
推荐引用方式 GB/T 7714	Murphy S.J.,Wiegand T.,Comita L.S.. Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community[J],2017,20(11).
APA	Murphy S.J.,Wiegand T.,&Comita L.S..(2017).Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community.Ecology Letters,20(11).
MLA	Murphy S.J.,et al."Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community".Ecology Letters 20.11(2017).