Temporal variability of forest communities: empirical estimates of population change in 4000 tree species
| Autor: | Sheng-Hsin Su, Sandeep Pulla, Yu-Yun Chen, George B. Chuyong, Somboon Kiratiprayoon, Jean-Remy Makana, Sandra L. Yap, Sylvester Tan, David Kenfack, H. S. Suresh, Corneille E. N. Ewango, Yiching Lin, Richard Condit, Ruwan Punchi-Manage, Ryan A. Chisholm, Stephen P. Hubbell, H. S. Dattaraja, I-Fang Sun, Raman Sukumar, K. Abd Rahman, Nantachai Pongpattananurak, Duncan W. Thomas, Patrick J. Baker, Stuart J. Davies, Sarayudh Bunyavejchewin, C.V.S. Gunatilleke, I. A. U. Nimal Gunatilleke |
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| Rok vydání: | 2014 |
| Předmět: |
0106 biological sciences
education.field_of_study Time Factors 010504 meteorology & atmospheric sciences Community Forest dynamics Ecology Ecology (disciplines) Population Dynamics Population Biodiversity Environment 15. Life on land Biology Models Biological 010603 evolutionary biology 01 natural sciences Trees Abundance (ecology) Population growth education Neutral theory of molecular evolution Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Ecology Letters. 17:855-865 |
| ISSN: | 1461-023X |
| DOI: | 10.1111/ele.12296 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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