April 25, 1994 - April 25, 2027
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Date:28TuesdayFebruary 2017
Size asymmetric competition and plant communities along resource gradients
More information| Time | 11:15 |
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| Location | Ullmann Building of Life Sciences
Aharon Katzir Hall |
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| Lecturer | Niv Demalach
Department of Ecology, Evolution and Behavior,
The Hebrew University of Jerusalem |
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| Details | Show full text description of https://www.researchgate.net/profile/Niv_Demalach
...» https://www.researchgate.net/profile/Niv_Demalach
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| Abstract | Show full text abstract about My research focuses on the effects of interspecific competit...» My research focuses on the effects of interspecific competition on diversity and composition of herbaceous plant communities I developed a theoretical model that incorporates size-asymmetric competition into the classical resource competition model of Tilman (1982). The model shows that size-asymmetric light competition is a necessary and sufficient condition for explaining species loss under high levels of soil resources. The model’s predictions were tested in a Mediterranean annual community. For this purpose I developed a novel method for quantifying the size-asymmetry of light partitioning under field conditions. The experimental results were fully consistent with the predictions of the theoretical model. In addition I analyzed global scale data for testing the applicability of my models in various ecosystems. The results of the analysis provide further support for my theoretical and experimental findings.
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