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Proc Natl Acad Sci U S A
; 71(2): 339-40, 1974 Feb.
Artigo
em Inglês
| MEDLINE
| ID: mdl-16592138
RESUMO
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.