Bird Species Diversity in Forest Understory: Analysis of Mist-Net Samples

Mist-netted samples of forest understory birds in neotropical (Costa Rica) and temperate (Illinois) forests (during spring migration) supported certain earlier observations: the neotropical understory sample contained more species, more rare species, and more species that use resources not sufficien...

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Bibliographic Details
Published in:Oecologia 1976-12, Vol.25 (4), p.373-379
Main Authors: Willson, Mary F., Moriarty, David J.
Format: Article
Language:English
Subjects:
Birds
Ecological genetics
Forest canopy
Forest ecology
Population ecology
Species
Species diversity
Synecology
Understory
Vegetation
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Summary:Mist-netted samples of forest understory birds in neotropical (Costa Rica) and temperate (Illinois) forests (during spring migration) supported certain earlier observations: the neotropical understory sample contained more species, more rare species, and more species that use resources not sufficiently available in temperate forest. During spring migration in Illinois, the number of bird species in a mist-netted sample of the community approaches (albeit temporarily) that of neotropical forests and is sometimes even equivalent. But the constitution of these samples seems to be quite different in different regions. Costa Rican samples showed greater within-habitat variability and individual recapture distances were shorter, implying a greater local patchiness of bird distributions than in Illinois in spring.
ISSN:0029-8549
1432-1939
DOI:10.1007/BF00345609