NCEAS Project 5220

An ecological-economic analysis of pest-control services: The Brazilian Free-tailed Bat as a model

  • Thomas H. Kunz

ActivityDatesFurther Information
Working Group1st—5th May 2002Participant List  
Working Group30th January—1st February 2003Participant List  
Working Group7th—8th February 2004Participant List  

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Abstract
Ecosystem services underpin human existence, yet we know little about the magnitude of these services in terms of what policy makers need to incorporate into decision-making frameworks. The objective of this project is to analyze existing databases for developing an ecological-economic model of pest-control services provided by an important insectivorous bat (Tadarida brasiliensis). Computer algorithms will be developed for estimating numbers of bats based on infrared thermal imaging, and population models of pest species will be developed based on available life-history data. Dynamic modeling and GIS will be used to integrate extant databases on bat foraging from Dopper radar (NEXRAD) data, crop and insect phenology, seasonal migration of bats and insects, and agricultural crop distribution, yield, and inputs. Ultimately, models will include sensitivity analysis to estimate the monetary value of the pest-control service, and thus provide the first comprehensive analysis of a major vertebrate predator of importance to agroecosystem productivity in North America.

TypeProducts of NCEAS Research
Presentations Betke, Margrit; Hirsh, D.; Hristov, N. I.; Lee, Y. F.; Allen, L.; Reichard, J.; Bamberger, M.; Bamberger, J. D. 2004. Build it and they will come: Establishment of a founder colony of Brazilian free-tailed bats (Tadarida brasiliensis) in a man-made cave. 34th North American Symposium on Bat Research, October 2004. Salt lake City, UT.
Presentations Betke, Margrit; Kunz, Thomas H.; Tang, S.; Hirsh, D. 2004. Censusing Brazilian free-tailed bats with infrared thermal imaging: Challenges, lessons learned, and initial results. 34th North American Symposium on Bat Research, October 2004. Salt Lake City, UT.
Software Betke, Margrit; Kunz, Thomas H.; Hristov, N. I.; Bagchi, Angshuman; Reichard, J.; Lee, Edward Y.; Tang, S.; Hirsh, D. Graphical computer interface and automated oject recognition and tracking algorithms.
Presentations Cleveland, Cutler; Betke, Margrit; Federico, Paula; Frank, Jeff D.; Hallam, Thomas G.; Horn, Jason; Kunz, Thomas H.; Lopez, Juan; McCracken, Gary F.; Medellin, Rodrigo A.; Moreno-Valdez, Arnulfo; Sansone, Chris; Westbrook, John. 2004. Economic value of pest control services by Brazilian free-tailed bats in Texas cotton production. 34th North American Symposium on Bat Research, October 2004. Salt Lake City, UT.
Journal Article Cleveland, Cutler; Betke, Margrit; Federico, Paula; Frank, Jeff D.; Hallam, Thomas G.; Horn, Jason; Lopez, Juan; McCracken, Gary F.; Medellin, Rodrigo A.; Moreno-Valdez, Arnulfo; Sansone, Chris; Westbrook, John; Kunz, Thomas H. 2006. Economic value of the pest control service provided by Brazilian free-tailed bats in south-central Texas. Frontiers in Ecology and the Environment. Vol: 4(5). Pages 238-243.
Presentations Federico, Paula; Cleveland, Cutler; Correa Sandoval, Adriana Nelly; Grant, William E.; Hallam, Thomas G.; Horn, Jason; Kunz, Thomas H.; Lopez, Juan; McCracken, Gary F.; Moreno-Valdez, Arnulfo; Sansone, Chris; Westbrook, John. 2004. Modeling the agricultural pest control service provided by Brazilian Free-tailed Bats (Tadarida brasiliensis) in the Winter Garden region of south Texas. 34th North American Symposium on Bat Research, October 2004. Salt Lake City, UT.
Presentations Hallam, Thomas G.; Federico, Paula; McCracken, Gary F.; Russell, A. L. 2002. Physiologically based models of bat dynamics. 32nd North American Symposium on Bat Research, 5-7 November 2002. Burlington, VT.
Presentations Hallam, Thomas G. 2003. The AGROBAT project: Modeling and analysis. Mathematics Colloquium. Arizona State University, Tempe. Tempe, AZ.
Presentations Hallam, Thomas G. 2003. The AGROBAT project: Modeling and analysis. Joint Mathematics and Biology Colloquium. University of Nebraska, Lincoln. Lincoln, NE.
Presentations Hallam, Thomas G. 2003. The AGROBAT project: Models. 2nd Alcala Symposium on Mathematical Ecology. Alcala, Spain.
Presentations Hallam, Thomas G.; Raghavan, A.; Wang, D.; Federico, Paula; McCracken, Gary F.; Kunz, Thomas H. 2004. Community and individual responses of Brazilian free-tailed bats (Tadarida brasiliensis) to avian predation. 34th North American Symposium on Bat Research, October 2004. Salt Lake City, UT.
Presentations Hirsh, D.; Betke, Margrit; Crampton, Stephen; Horn, Jason; Cleveland, Cutler; Kunz, Thomas H. 2003. Censusing Brazilian free-tailed bats using infrared thermal imaging and computer vision methods. Abstract. Awarded . 33rd North American Symposium on Bat Research. Lincoln, NE.
Presentations Hirsh, D.; Betke, Margrit; Kunz, Thomas H. 2004. Computer vision for tracking bats in infrared thermal video: A tool for understanding the behavior of bats in flight (poster). 34th North American Symposium on Bat Research, October 2004. Salt Lake City, UT.
Presentations Horn, Jason; Dezzani, R.; Kunz, Thomas H. 2002. Behavioral dynamics of large-scale nightly emergences and dispersal of Brazilian free-tailed bats (tadarida brasiliensis). 32nd North American Symposium on Bat Research, 5-7 November 2002. Burlington, VT.
Presentations Kunz, Thomas H.; Horn, Jason; Frank, Jeff D. 2001. Ecological, behavioral, and physiological applications of infrared thermal imaging for the study of bats. Abstract. 31st North American Symposium on Bat Research. Victoria, British Columbia.
Presentations Kunz, Thomas H. 2002. Reproductive energetics of free-ranging Brazilian free-tailed bats: value added knowledge for assessing ecosystem services. 32nd Annual Meeting of the North American Symposium on Bat Research, 5-7 November 2002. Burlington, VT.
Book Chapter Kunz, Thomas H. 2003. Censusing bats: Challenges, solutions, and sampling biases. Edited by O'Shea, T. J.; Bogan, M. A.. Monitoring trends in bat populations of the United States and territories: Problems and Prospects. U.S. Geological Survey. Information and Technology Report USGS/BRD/ITR--2003-0003. Fort Collins, CO. Pages 9-20.
Report or White Paper Kunz, Thomas H. 2003. Methods for estimating numbers of bats: Challenges, problems, and sampling biases. Edited by O'Shea, T.J.; Bogan, M.A. Bat Census Workshop. U.S. Fish and Wildlife, Special Report. Fort Collins, Colorado.
Presentations Kunz, Thomas H. 2003. Reproductive energetics of free-ranging Brazilian free-tailed bats: value added knowledge for assessing ecosystem services, 5 May 2003. Department of Wildlife and Forestry, University of Missouri.
Book Chapter Kunz, Thomas H. 2004. Foraging habits of North American bats. Edited by Brigham, R. M.; Kalko, E. K. V.; Jones, G.; Parsons, S.; Limpens, H. J. H. A.. Bat echolocation research: Tools, techniques and analysis. Bat Conservation International. Austin, Texas. Pages 13-25.
Presentations Kunz, Thomas H. 2004. Reproductive energetics of free-ranging Brazilian free-tailed bats: value added knowledge for assessing ecosystem services, 16 January 2004. Department of Ethology, University of Zurich. Switzerland.
Presentations Kunz, Thomas H. 2004. Reproductive energetics of free-ranging Brazilian free-tailed bats: value added knowledge for assessing ecosystem services, 19 January 2004. Department of Evolutionary Biology, University of Bern. Switzerland.
Presentations Lee, Edward Y.; Betke, Margrit; Kunz, Thomas H. 2004. Bats in motion: Stereo object recognition and trajectory: Analysis of flying bats (poster). 34th North American Symposium on Bat Research, October 2004. Salt Lake City, UT.
Journal Article Lee, Y. F.; McCracken, Gary F. 2002. Foraging activity and food resource use of Brazilian free-tailed bats, Tadarida brasiliensis (Molossidae). Ecoscience. Vol: 9. Pages 306-313.
Journal Article Lee, Y. F.; McCracken, Gary F. 2005. Dietary variation of Brazilian free-tailed bats links to migratory populations of pest insects. Journal of Mammalogy. Vol: 86(1). Pages 67-76.
Book Chapter McCracken, Gary F. 2003. Estimates of population sizes in summer colonies in Brazilian free-tailed bats (Tadarida brasiliensis). Edited by O'Shea, T. J.; Bogan, M. A.. Monitoring Trends in Bat Populations of the United States and Territories: Problems and Prospects. U.S. Geological Survey. Information and Technology Report USGS/BRD/ITR--2003-0003. Fort Collins, CO. Pages 21-30.
Presentations Reichard, J.; Allen, L.; McCracken, Gary F.; Kunz, Thomas H. 2004. Bats, guano, and ecosystems (award-winning poster). 34th North American Symposium on Bat Research, October 2004. Salt lake City, UT.
Presentations Russell, A. L. 2002. Bats and panmixis: Investigating population genetic structure in large populations of migratory bats. Recipient of Best Student Paper Award. 32nd Annual Meeting of the North American Symposium on Bat Research, 5-7 November 2002. Burlington, VT.