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Limited support for the “abundant centre” hypothesis in birds along a tropical elevational gradient: implications for the fate of lowland tropical species in a warmer future |
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| Authors: | Benjamin G Freeman Bruce M Beehler |
| Institution: | 1. Department of Zoology, University of British Columbia, Vancouver, BC, Canada;2. Division of Birds, National Museum of Natural History, Smithsonian Institution, Washington, DC |
| Abstract: | |
| Keywords: | abundance distribution abundant centre hypothesis biogeography biotic attrition elevational gradient gradient analysis truncated niche |