globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12856
Scopus记录号: 2-s2.0-85031501003
论文题名:
Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community
作者: Murphy S.J.; Wiegand T.; Comita L.S.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期:11
起始页码: 1469
结束页码: 1478
语种: 英语
英文关键词: Barro Colorado Island (BCI) ; dispersal ; diversity maintenance ; Janzen–Connell ; overcompensating ; recruitment ; species coexistence
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107552
Appears in Collections:气候减缓与适应

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作者单位: Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, 318 W. 12th Avenue, Columbus, OH, United States; School of Forestry and Environmental Studies, Yale University, 195 Prospect Street, New Haven, CT, United States; Department of Ecological Modelling, Helmholtz Centre for Environmental Research—UFZ, Permoserstrasse 15, Leipzig, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, Germany; Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama

Recommended Citation:
Murphy S.J.,Wiegand T.,Comita L.S.. Distance-dependent seedling mortality and long-term spacing dynamics in a neotropical forest community[J]. Ecology Letters,2017-01-01,20(11)
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