Temporal variability of forest communities: empirical estimates of population change in 4000 tree species

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Title:	Temporal variability of forest communities: empirical estimates of population change in 4000 tree species
Authors:	林宜靜 Ryan, A.Chisholm Condit, Richard K.Abd.Rahman Patrick, J.Baker Bunyavejchewin, Sarayudh Chen, Yu-Yun Chuyong, George H.S.Dattaraja Davies, Stuart Corneille, E.N.Ewango C.V.S.Gunatilleke Gunatilleke, I.A.U.Nimal Hubbell, Stephen Kenfack, David Kiratiprayoon, Somboon Lin, Yiching Makana, Jean-Remy Pongpattananurak, Nantachai Pulla, Sandeep Ruwan, Punchi-Manage Sukumar, Raman Su, Sheng-Hsin Sun, I-Fang H.S.Suresh Tan, Sylvester Thomas, Duncan Yap, Sandra
Contributors:	Smithsonian Tropical Research Institute National University of Singapore University of Melbourne Wildlife and Plant Conservation National Dong Hwa University University of Buea Indian Institute of Science Wildlife Conservation Society University of Peradeniya University of California Thammasat University Department of Life Science, Tunghai University Faculty of Forestry Taiwan Forestry Research Institute Oregon State University University of the Philippines
Keywords:	Abundance fluctuations biodiversity demographic stochasticity environmental variance forest dynamics neutral theory niche stabilization
Date:	2014-07
Issue Date:	2016-11-03T01:22:27Z (UTC)
Publisher:	UK:Wiley-Blackwell
Abstract:	Long-term surveys of entire communities of species are needed to measure fluctuations in natural populations and elucidate the mechanisms driving population dynamics and community assembly. We analysed changes in abundance of over 4000 tree species in 12 forests across the world over periods of 6–28 years. Abundance fluctuations in all forests are large and consistent with population dynamics models in which temporal environmental variance plays a central role. At some sites we identify clear environmental drivers, such as fire and drought, that could underlie these patterns, but at other sites there is a need for further research to identify drivers. In addition, cross-site comparisons showed that abundance fluctuations were smaller at species-rich sites, consistent with the idea that stable environmental conditions promote higher diversity. Much community ecology theory emphasises demographic variance and niche stabilisation; we encourage the development of theory in which temporal environmental variance plays a central role.
Relation:	Ecology Letters, 17(7), 855-865
Appears in Collections:	[生命科學系所] 期刊論文

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