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Abstract for the poster presented at the 2002 North American Ornithological Conference Spatial modeling of Hawaiian forest bird densities. Marcos Gorresen, Richard J. Camp, Bethany L. Woodworth, and Thane K. Pratt. USGS Pacific Island Ecosystem Research Center, P.O. Box 44, Hawaii National Park, HI 96718. The Pacific Island Ecosystems Research Center of the USGS Biological Resources Division has developed a GIS-intensive ecological study of the Hawaiian avifauna: the Hawaii Forest Bird Interagency Database Project. The project has produced a relational database of all forest bird survey data collected in the state since the mid-1970s. More than ¾ million records from 400 surveys on all the major islands are included in the database. This data has been used in GIS to integrate information on species abundance and habitat at the landscape level, and to determine the habitat characteristics that play a role in regulating density and distribution. Bird densities and habitat attributes at surveyed locations were used to develop spatial predictive models of density and habitat associations. Estimates of densities were generated for grids spanning each study area, and interpolation of predicted densities were used to map gradients and estimate population sizes. Density maps based on models that incorporate habitat characteristics more accurately depict the relationships of bird density and habitat than interpolation of survey site data alone. Tree regression analyses were also used to develop spatial models of habitat suitability. |
| Link to poster. |
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Department of the Interior |
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This page maintained by: Hawaii Forest Bird Interagency Database Project Kilauea Field Station Building 344, PO Box 44 Hawaii National Park, HI 96818 Phone: (808) 967-7396 ext 252 |
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