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Contact Information last updated 10 / 4 / 2004 |
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I'm a professional biologist with the |
My work as a wildlife biologist with the Biological Resources Division of the U.S. Geological Survey focuses on assessing population trends and estimating life history parameters for species of special concern to the U.S. Department of the Interior. My primary research is on the population ecology of the Florida manatee, a coastal marine mammal listed as endangered due to its small population size, degraded habitat and high mortality from collisions with boats. I am using mark-recapture statistical models to estimate annual survival rates and reproduction rates and to identify human and environmental factors that affect these rates. This information is being used by wildlife managers to assess population status and to determine management policies.
Publications (some available as e-prints) Runge, M. C., C. A. Langtimm, and W. L. Kendall. 2004. A stage-based model of population dynamics. Marine Mammal Science 20:361-385. Kendall, W. L., C. A. Langtimm, C. A. Beck, and M. C. Runge. 2004. Capture-recapture analysis for estimating manatee reproductive rates. Marine Mammal Science 20:424-437. Langtimm, C. A., C.A. Beck, H. H. Edwards, K. J. Fick-Child, and B. B. Ackerman. 2004. Survival estimates for Florida manatees from the photo-identification of individuals. Marine Mammal Science 20:438-463. Langtimm, C. A., and C. A. Beck. 2003. Lower survival probabilities for adult Florida manatees in years with intense coastal storms. Ecological Applications 13:257-268. MacKenzie, D. I., J. D. Nichols, G. Lachman, S. Droege, J. A. Royal, and C. A. Langtimm. 2002. Estimating site occupancy rates when detection probabilities are less than one. Ecology 83:2248-2255. Hall, R. J., and C. A. Langtimm. 2001. The U.S. National Amphibian Research and Monitoring Initiative and the role of protected areas. The George Wright Forum 18(2):14-25. Langtimm, C. A., and R. Unnasch. 2000. p. 241. Mice, birds, and pollination of Blakea chlorantha. in: Monteverde: Ecology and Conservation of a Tropical Cloud Forest. N. M. Nadkarni and N. T. Wheelwright (editors). Oxford University Press.
Langtimm, C. A. 2000. Arboreal mammals. pp. 239-240 in: Monteverde: Ecology and Conservation of a Tropical Cloud Forest. N. M. Nadkarni and N. T. Wheelwright (editors). Oxford University Press. Harker, M. B., G. B. Rathbun, and C. A. Langtimm. 1999. Beaded-chain collars: a new method to radio-tag kangaroo rats for short-term studies. Wildlife Society Bulletin, 27:314-317. Langtimm, C. A., T. J. O'Shea, R. Pradel, and C. A. Beck. 1998. Estimates of annual survival probabilities for adult Florida manatees (Trichechus manatus latirostris). Ecology 79:981-997. Langtimm, C. A., C. K. Dodd, Jr., and R. Franz. 1996. Estimates of abundance of box turtles (Terrapene carolina bauri) on a Florida Island. Herpetologica 52:496-504. O'Shea, T. J. and C. A. Langtimm. 1995. Estimation of survival of adult Florida manatees in the Crystal River, at Blue Spring, and on the Atlantic coast. Pages 194-222 in: Population Biology of the Florida Manatee. O'Shea, T. J., B. B. Ackerman, and H. F. Percival (editors). U. S. Department of the Interior, National Biological Service, Information and Technology Report 1. Reid, F. A. and C. A. Langtimm. 1993. Distribution and natural history notes for selected mammals from Costa Rica. Southwestern Naturalist 38:299-302. Langtimm, C. A. and D. A. Dewsbury. 1991. Phylogeny and evolution of rodent copulatory behavior. Animal Behavior 41:217-225.
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