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In a world constantly expanding and eliminating native habitats, small range species are at greater risk of endangerment than those species with larger, more diverse ranges. In order to prevent these species from becoming the next generation of threatened and endangered species, it is integral to know where these species are located, as well as development trends in these same locations. This study has mapped the location of small range species of birds and butterflies on a county scale in the United States and identified those areas with the highest growth rates. Butterfly species occurring in 30 or fewer counties (1% of the total counties in the United States) were chosen as small range species of this taxon, and small range avian species were defined as those with breeding ranges of 50,000 km2 or less. Avian breeding ranges were digitized using geographic information systems and then converted to a county presence/absence scale for comparison with butterfly species...
Abbitt, R.F.. 1999. Geographic Distribution of Small Range Species and Development Patterns in the United States (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Conference Biology & ManagementProceedings. Vol. 1
Topic: Species and Ecosystems at Risk
Keywords: birds, butterflies, ranges, United States, hot spots, conservation
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Other Identifier: University College of the Cariboo
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