You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Relationship between Species Richness of Excavator Birds and Cavity—Adopters in Seven Tropical Forests in Costa Rica
Luis Sandoval and Gilbert Barrantes
The Wilson Journal of Ornithology
Vol. 121, No. 1 (Mar., 2009), pp. 75-81
Published by: Wilson Ornithological Society
Stable URL: http://www.jstor.org/stable/20616856
Page Count: 7
You can always find the topics here!Topics: Bird nesting, Woodpeckers, Species, Tropical rain forests, Tropical forests, Forest ecology, Montane forests, Nesting tables, Forest conservation, Parrots
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
The abundance of wood cavities is thought to be a limiting factor for bird species that depend on these cavities for nesting. Thus, it is expected that number of cavity adopters correlates with number of cavity excavators across communities. We used available published data to compare composition and richness of cavity adopters and cavity excavators across seven forest localities in Costa Rica. Species richness and composition of cavity excavator and cavity adopter bird assemblages varied among the seven forests. Species composition of excavators and adopters was more similar between nearby localities and between localities with similar forest types. Richness of wood-cavity adopters (using mostly cavities created by excavators) tended to increase with richness of excavators. The lack of association between cavity adopters and cavity excavators in some localities may be compensated by high abundance of a few species of excavators. The abundance of adopters and their dependence on forested habitats and on cavities excavated by woodpeckers varied largely across localities.
The Wilson Journal of Ornithology © 2009 Wilson Ornithological Society