Migration and species diversity in the tropics |
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| Authors: | Klopfer P H Rubenstein D I Ridgely R S Barnett R J |
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| Affiliation: | Zoology Department, Duke University, Durham, North Carolina 27706. |
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| Abstract: | If the young of a dominant species are subjected to disproportionately heavy predation, this, together with a limitation on food, can promote a high species diversity. This is seen among tropical birds, which are simultaneously exposed to both conditions to a far greater degree than are Temperate Zone species. Migration to the Temperate Zones during the spring provides a release from these restraints, while also precluding breeding in the Tropics. |
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