globalchange  > 气候变化与战略
DOI: 10.1016/j.foreco.2020.117940
Neighborhood interactions on seedling survival were greatly altered following an extreme winter storm
Author: Wang Y.; Cadotte M.W.; Chen J.; Mi X.; Ren H.; Liu X.; Yu M.; Zhang J.; Ma K.
Source Publication: Forest Ecology and Management
ISSN: 3781127
Publishing Year: 2020
Volume: 461
Language: 英语
Keyword: Community assembly ; Extreme cold spells ; Species coexistence ; Subtropical forest ; the 2008 Chinese winter storms
Scopus Keyword: Dynamics ; Forestry ; Community assembly ; Extreme cold spells ; Species coexistence ; Subtropical forests ; Winter storms ; Storms ; community dynamics ; community structure ; conspecific ; environmental values ; intraspecific competition ; mortality ; plant community ; seedling ; shrub ; survival ; understory ; Density ; Dynamics ; Forestry ; Impact ; Recruitment ; Survival ; Trees ; Variables ; China
English Abstract: Extreme climatic events (ECEs) are predicted to increase in frequency and magnitude under scenarios of global change. It is well known that ECEs impact community structure and dynamics, but how ECEs alter community assembly remains unclear. The strength of local neighborhood interactions should be altered following ECEs, which could provide a mechanistic basis for how ECEs impact forest community dynamics. In a subtropical forest in China, we monitored the survival of more than 7800 understory seedlings representing 116 tree and shrub species since 2006, and this forest experienced an extreme and unexpected winter storm in February 2008. Here, we quantified changes in the effects of intraspecific and interspecific competition, as well as the effects of environmental variables driving seedling survival before and after the storm. We found that seedling density and Simpson diversity greatly increased after the winter storm. Seedling mortality and recruitment peaked in the second year after the storm, and then returned to pre-storm levels in subsequent census years. Seedling survival was negatively affected by conspecific and heterospecific tree density before the winter storm, while after the storm, survival was affected by conspecific seedling density and nearest taxon functional diversity (NTFd’) of tree neighbors, as well as by environmental variables. Moreover, we found a significant difference between abundant and less-abundant species in response to local neighborhood interactions before and after the storm. In short, community dynamics and the effects of local neighborhood on seedling survival were significantly altered following the extreme winter storm. Our study suggests that integrating abiotic and biotic interactions before and after ECEs, and taking functional traits into consideration, contributes to a better understanding of the biological response of forest community dynamics to environmental fluctuations. © 2020 Elsevier B.V.
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Document Type: 期刊论文
Appears in Collections:气候变化与战略

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Affiliation: Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, 19 XinJieKouWai St., Beijing, 100875, China; State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, 20 Nanxincun, Xiangshan, Beijing, 100093, China; Department of Biological Sciences, University of Toronto-Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks St., Toronto, ON M5S 3B2, Canada; College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Rd., Jinhua, 321004, China; Ministry of Education Key Laboratory of Conservation Biology for Endangered Wildlife, College of Life Sciences, Zhejiang University, 866 Yuhangtang Rd., Hangzhou, 310058, China

Recommended Citation:
Wang Y.,Cadotte M.W.,Chen J.,et al. Neighborhood interactions on seedling survival were greatly altered following an extreme winter storm[J]. Forest Ecology and Management,2020-01-01,461
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