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International Journal of Ecology
Volume 2011, Article ID 364213, 12 pages
Research Article

Species Richness and Diversity of Resident and Migratory Landbirds in Remnant Forest Patches and Residential Areas in the Florida Keys, USA

1Department of Wildlife Ecology and Conservation and Southwest Florida Research and Education Center, University of Florida, 2686 SR 29 North, Immokalee, FL 34142-9515, USA
2Department of Statistics, University of Florida, 406 McCarty C, Gainesville, FL 32611-0339, USA
3Department of Wildlife Ecology and Conservation, University of Florida, 110 Newins-Zielger Hall, P.O. Box 110430, Gainesville, FL 32611-0430, USA

Received 2 January 2011; Revised 16 June 2011; Accepted 23 June 2011

Academic Editor: Madhur Anand

Copyright © 2011 Martin B. Main et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Conservation of migratory birds necessitates protecting suitable stopover habitat along migratory routes as well as destination habitats, especially near large geographic barriers such as the Gulf of Mexico. The Florida Keys (Keys) are an important stopover and breeding destination for migratory landbirds. We documented 47 migratory and 21 resident landbird species via point counts during March–May 2004 and 2005. As a group, species richness, species diversity, and the effective number of species of migratory landbirds, including several species of conservation concern, was significantly and positively associated with percent cover of tropical hardwood hammock, a threatened upland forest type. The collective resident landbird community in the Keys was negatively associated with native hammock cover, although species diversity of the resident community was positively associated with the proximity of native hammock and several resident species, including species of conservation concern, were commonly or predominantly associated with native hammock. Consequently, conservation of native hammock habitat in the Keys is an important conservation priority for migratory birds and several resident species of conservation concern.