The cryptic and nocturnal habits of bats render it difficult to assess trends in the status of their populations. To meet this challenge, USGS biologists Mike Bogan and Tom O'Shea hosted an expert workshop to examine the topic of monitoring the status of bat populations. The proceedings are contained in a newly released report, “Monitoring Trends in Bat Populations of the United States and Territories: Problems and Prospects,” Information and Technology Report USGS/BRD/ITR—2003-003. Part I of the report includes contributed papers that give an overview of past and current monitoring efforts, and a compilation and analysis of existing data on bat population trends in the U.S. and territories. In Part II, workshop participants provide critical analyses of problems in monitoring trends in bat populations along with recommendations for improving methods, defining objectives and priorities, and enhancing information exchange to facilitate future monitoring work. Hard copies are available from the editors.
For more information contact: Tom O'Shea
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[WAGNER'S MASTIFF BAT]
[WESTERN MASTIFF BAT]
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[POCKETED FREE-TAILED BAT]
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[SOUTHWESTERN MYOTIS]
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[CALIFORNIA MYOTIS]
[LONG-EARED MYOTIS]
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[KEEN'S MYOTIS]
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[INDIANA OR SOCIAL MYOTIS]
[FRINGED MYOTIS]
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[YUMA MYOTIS]
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Monitoring trends in bat populations of the United States and territories: problems and prospects
U.S. Department of the Interior | U.S. Geological Survey
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