Philip A Medica Biologist USGS ,   Phone: (702) 564-4573 Fax: (702) 564-4600 Email: pmedica@usgs.gov

SCIENTIFIC EXPERTISE Desert Ecology Ecology of Desert Mammals Ecology of Reptiles and Amphibians Herpetology Monitoring methodology Natural history Physiology of Desert Vertebrates Population biology Population Biology of Reptiles Species inventory Telemetry (radio and/or satellite) Terrestrial mammal ecology Threatened and endangered species Zoology

EDUCATION M.S. 1966, Biology, New Mexico State University, Las Cruces, NM B.S. 1964, Wildlife Management, New Mexico State University, Las Cruces, NM

PROFESSIONAL SOCIETIES American Association for the Advancement of Science American Society of Ichthyologists & Herpetologists Arizona-Nevada Academy of Science Chelonian Research Society Desert Tortoise Council Ecological Society of America Great Basin Naturalist Herpetologists' League International Herpetological Symposium International Union for the Conservation of Nature Society for the Study of Amphibians & Reptiles Southwestern Association of Naturalists The Wildlife Society

PROFESSIONAL EXPERIENCE Wildlife Biologist, USGS Western Ecological Research Center, Las Vegas Field Station, Las Vegas, NV, Nov 1998-Present Station Leader, USGS Western Ecological Research Center, Las Vegas Field Station, Las Vegas, NV, Jun 1997-Oct 1999 Research Wildlife Biologist, USGS, Western Ecological Science Center, Las Vegas, NV, Nov 1993-Oct 1998 Station Leader, National Biological Service (Survey) Midcontinental Ecological Sci. Center, Las Vegas, NV, Oct 1993-Jun 1997 Ecologist, Bureau of Land Management, Las Vegas District Office, Las Vegas, NV, Apr 1992-Oct 1993 Senior Ecologist, Reynolds Electrical & Engineering Co., Inc., Mercury, NV, Mar 1987-Apr 1992 Research Associate, Museum of Natural History, University of Nevada Las Vegas, Las Vegas, NV, May 1987-Present Research Associate, Division of Herpetology, Museum of Natural History of L.A. County, Los Angeles, CA, Sep 1984-Present Treasurer,  Herpetologists' League, Jul 1975-Sep 1979 Field Research Coordinator, Univ. of Calif., Lab. of Nuclear Medicine & Radiation Biology, Nevada Test Site, Jan 1975-Sep 1981 Field Research Coordinator, Univ. of Calif., Lab. of Nuclear Medicine & Radiation Biology, Nevada Test Site, Jan 1971-Dec 1972 Assistant Field Research Coordinator, Univ. of California, Laboratory of Nuclear Medicine & Radiation Biology, Nevada Test Site, Jan 1973-Dec 1974 Staff Research Associate, Univ. of California, Laboratory of Nuclear Medicine & Radiation Biology, Nevada Test Site, Feb 1967-Sep 1981

PRODUCTS Nussear, K. E., T. C. Esque, J. S. Heaton, M. E. Cablk, K. K. Drake, C. Valentin, J. L. Yee, and P. A. Medica. 2008. Are wildlife detector dogs or people better at finding Desert Tortoises (Gopherus agassizii)? Herpetological Conservation 3:103:115. [Journal Article] Heaton, J. S., K. E. Nussear, T. C. Esque, R. D. Inman, F. M. Davenport, T. E. Leuteritz, P. A. Medica, N. W. Strout, P. A. Burgess and L. Benvenuti. 2008. Spatially explicit decision support for selecting translocation areas for desert tortoises. Biodiversity and Conservation.; doi: 10.1007/s10531-007-9282-3 [Journal Article] Nussear, K. E., R. D. Inman, T. C. Esque, P. A. Medica and M. A Walden. 2008. Sloan Canyon: Reptiles on the Urban Edge: 2007 Final Report to BLM. [Technical Report] Esque, T. C., K. E. Nussear, and P. A. Medica. 2005. Desert Tortoise Translocation Plan for Fort Irwin's Land Expansion Program at the U. S. Army National Training Center (NTC) & Fort Irwin. Prepared for U. S. Army National Training Center, Directorate of Wublic Works. 129 pp. [Other] Esque, T.C., S. VanderWall, C.R. Schwalbe, P.A. Medica, and R.H. Webb. 2004. Effects of fire on small animals and the potential for animals to facilitate restoration in hot desert environments. Northwest Science Association Symposium. Session on: Fire and Hazardous Fuel Reduction. Ellensburg, WA. [Presentation] Webb, R. H., T. C. Esque, K. A. Thomas, D. F. Haines, M. B. Murov, L. A. DeFalco, and P. A. Medica. 2003. Changes in undisturbed perennial vegetation in the northern Mojave Desert. Poster presented at the Desert Managers Group and Society for Ecological Restoration, Arid Lands Habitat Restoration Conference, Palm Springs, California. [Poster] Goodwin, K.A., M.B. Saethre, T.C. Esque*, P.A. Medica, R. Marlow, C.R. Tracy. 2003. Reproduction of the Desert Tortoise in Clark County, Nevada. Presented at the 28th Annual Symposium of the Desert Tortoise Council. Las Vegas, Nevada. [Presentation] Saethre*, M.B., K. Goodwin, T.C. Esque, P.A. Medica, R. Marlow, C.R. Tracy. 2003. Determining the Carrying Capacity of Desert Tortoises. Presented at the 28th Annual Symposium of the Desert Tortoise Council. Las Vegas, Nevada. [Presentation] Goodwin*, K.A., M.B. Saethre, T.C. Esque, P.A. Medica, R. Marlow, C.R. Tracy. 2003. Determining the Carrying Capacity of Desert Tortoises In A Stochastic Environment. Presented at the 28th Annual Symposium of the Desert Tortoise Council. Las Vegas, Nevada. [Poster] DeFalco, L. A., S. J. Scoles, R. B. Hunter, T. C. Esque, D. F. Haines, P. A. Medica and R. H. Webb. 2003. Does dominance of the invasive annual grass Bromus madritensis ssp. rubens impact native annual plant communities? An investigation using long-term data from the Nevada Test Site, southern Nevada. Poster presented at the Desert Managers Group and Society for Ecological Restoration, Arid Lands Habitat Restoration Conference, Palm Springs, California. [Poster] Medica, P. A., T. C. Esque, D. F. Haines, L. A. DeFalco,and R. H. Webb. 2003. Long-term responses of nocturnal rodents to wildfires in the Mojave and Great Basin Desert ecotone. Poster presented at the Desert Managers Group and Society for Ecological Restoration, Arid Lands Habitat Restoration Conference, Palm Springs, California. [Poster] Webb, R.H., Murov, M.B., Esque, T.C., Boyer, D.E., DeFalco, L.A., Haines, D.F., Oldershaw, D., Scoles, S.J., Thomas, K.A., Blainey, J.B., and Medica, P.A. 2003. Perennial vegetation data from permanent plots on the Nevada Test Site, Nye County, Nevada: U.S. Geological Survey Open-File Report 03-336, 200 p. [Technical Report] Goodwin, K.A., T.C. Esque, P.A. Medica, M.B. Saethre, R.W. Marlow, and C.R. Tracy. 2003. Variation in reproduction of the desert tortoise (Gopherus agassizii) in the Mojave Desert of southern Nevada in relation to body size, primary production and climate. Submitted to the University of Navada, Reno under contract for Clark County Multi-Species Habitat Conservation Plan. 22pp. [Technical Report] Esque, T. C., P.A. Medica, S.B. VanderWall, R.H. Webb, D.F. Haines, L.A. DeFalco, and C. R. Tracy. 2003. The role of small animals, invasive plants and fire in Mojave Desert seed bank dynamics and vegetation recovery. Poster presented at the Desert Managers Group and Society for Ecological Restoration, Arid Lands Habitat Restoration Conference, Palm Springs, California. [Poster] Webb, R. H., T. C. Esque, K. A. Thomas, D. F. Haines, M. B. Murov, L. A. DeFalco and P. A. Medica. 2002. Long-term changes in perennial vegetation in permanent plots of the northern Mojave Desert. Paper presented at the 87th Annual Meeting of the Ecological Society of America, Tucson, Arizona. [Abstract] Medica, P. A., T. C. Esque, D. F. Haines, L. A. DeFalco and R. H. Webb. 2002. Long-term response of nocturnal rodents to wildfire in the Mojave and Great Basin Desert ecotone. Paper presented at the 87th Annual Meeting of the Ecological Society of America, Tucson, Arizona. [Abstract] Theodorakis, C.W., J.W. Bickham, T. Lamb, P.A. Medica and T.B.Lyne. 2001. Integration of genotoxicicity and population genetic analyses in kangaroo rats (Dipodomys merriami) exposed to radionuclide contamination at the Nevada Test Site, USA. Environmental Toxicology and Chemistry 20(2):317-326 [Journal Article] Webb, R. H., T. C. Esque, P. A. Medica, L. A. DeFalco and M. B. Murov. 2001. Monitoring of ecosystem dynamics in the Mojave Desert: the Beatley permanent plots. USGS Fact Sheet prepared in cooperation with the Recoverability and Vulnerability of Desert Ecosystems Program. [Fact Sheet] Esque, T.C., L. A. DeFalco, P. A. Medica, M. L. Brooks and R. H. Webb. 2000. Predicted changes in Mojave fire frequency related to invasive annual grasses. Effects of a Hotter and Drier Climate, a USGS Workshop. Tuscon, AZ. [Abstract] Lovich, J. E., P. Medica, H. Avery, K. Meyer, G. Bowser, and A. Brown. 1999. Studies of reproductive output of the desert tortoise at Joshua Tree National Park, the Mojave National Preserve, and comparative sites. Park Science 19(1):22-24. [Journal Article] Berry, K. H., and P. Medica. 1995. Desert tortoises in the Mojave and Colorado deserts. Pages 135-137 in E. L. LaRoe, G. S. Farris, and C. E. Puckett (eds.), Our Living Resources: A report to the nation on the distribution, abundance, and health of U. S. plants, animals, and ecosystems. USDI, National Biological Service, Washington, D.C. 530 p. [Book Chapter] Germano, D.J., R.B. Bury, T.C. Esque, T.H. Fritts, P.A. Medica. 1994. Range and habitats of the desert tortoise. In, pp. 73-84, R.B. Bury, and D.J. Germano (eds.), Biology of North American Tortoises. U.S. Department of Interior National Biological Survey, Fish and Wildlife Research 13. [Book Chapter] Medica, P.A. 1994. The effects of an ATV/Motorcycle OHV race upon course widening. SNARE, Nelson Hills ATV/Motorcycle race, December 5, 1993. National Biological Survey Draft Report to Bureau of Land Management. 18pp + 3 Appendices. (Dated Sept. 12, 1994) [Technical Report] Medica, P.A. 1994. Study of an off-highway vehicle race in Eldorado Valley "Twilight 200" March 27, 1993. Bureau of Land Management Draft Report. 29pp [Technical Report] Medica, P.A., M.B. Saethre, R.B. Hunter, and J.D. Drumm. 1994. Trends in reptiles populations on the Nevada Test Site. In Hunter, R.B. (compiled by). Status of the flora and fauna on the Nevada Test Site, 1989-1991. Reynolds Elect. & Eng. Co., Inc. Report DOE/NV/11432-57. pp 1-49. [Technical Report] Bury, R.B., T.C. Esque, L.A. DeFalco, and P.A. Medica. 1994. Distribution, habitat use and protection of desert tortoise in the Eastern Mojave Desert. In, pp. 57-72, R.B. Bury, and D.J. Germano (eds.), Biology of North American Tortoises. U.S. Department of Interior National Biological Survey, Fish and Wildlife Research 13. [Book Chapter] Saethre, M.B. and P.A. Medica. 1993. Geographic Distribution: Hemidactylus turcicus. Herpetological Rev. 24(4):154-155. [Journal Article] Medica, P.A. 1992. Desert tortoise population trends in Nevada 1990-1992. Bureau of Land Management Report 9pp. [Technical Report] Saethre, M.B. and P.A. Medica. 1992. Status of small mammals on the NTS in 1988. In Hunter (ed.). Status of the flora and fauna on the Nevada Test Site, 1988. Reynolds Elect. & Eng. Co., Inc. Report DOE/NV/10630-29. pp 97-160. [Technical Report] Medica, P.A. 1992. Status of Reptiles in 1988. In Hunter (ed.) Status of the flora and fauna on the Nevada Test Site, 1988. Reynolds Elect. & Eng. Co., Inc. Report DOE/NV/10630-29. pp 59-95. [Technical Report] Hunter, R.B. and P.A. Medica. 1992. Extent of land disturbance on the Nevada Test Site. In Hunter (ed.). Status of the flora and fauna on the Nevada Test Site. Reynolds Elect. & Eng. Co., Inc. Report DOE/NV/10630-29. pp 3-7. [Technical Report] Delaney, D.E., P.A. Medica, and D.B. Hardenbrook. 1991. Geographic distribution: Diadophis punctatus regalis. Herpetological Rev. 22(1):26. [Journal Article] Hunter, R.B., M.B. Saethre, P.A. Medica, P.D. Greger and E.M. Romney. 1991. Biological studies in the impact zone of the liquefied gaseous fuels spill test facility in Frenchman Flat, Nevada. Reynolds Elect. & Eng. Co., Inc. DOE/NV/10630-15. 42 pp. [Technical Report] Medica, P.A. and M.B. Saethre. 1991. Small Mammal Detailed Procedure. Reynolds Electrical and Engineering Co., Inc. Detailed Procedure. AABAF.06.00. Rev. 1. 14pp. [Technical Report] Medica, P.A. 1991. Tortoise Detailed Procedure. Reynolds Electrical and Engineering Co., Inc. Detailed Procedure. AABAF.D.04.00. Rev. 1. 18pp. [Technical Report] Medica, P.A. 1991. Lizard Study Procedures. Reynolds Electrical and Engineering Co., Inc. Detailed Procedure. AABAF.D.05.00. Rev. 1. 22pp. [Technical Report] Medica, P.A., O.L. Haworth, and M.S. Kelly. 1990. Geographic distribution: Eumeces gilberti rubricaudatus. Herpetological Rev. 21(2):40. [Journal Article] Anspaugh, L.R., S.C. Black, C.F. Costa, D.R. Elle, E.H. Essington, R.O. Gilbert, D.A. Gonzalez, R.B. Hunter, R.D. McArthur, P.A. Medica, T.P. O'Farrell, S.E. Patton, E. M. Romney, J.H. Shinn, and C.B. Thompson. 1990. Radiation-related monitoring and environmental research at the Nevada Test Site. In: R.H. Gray (ed.) Twenty-eighth Hanford Symposium on Health and the Environment. Pages 159-167. Richland, Washington. [Journal Article] Medica, P.A. 1990. Noteworthy mammal distribution records for the Nevada Test Site. Great Basin Nat. 50(1)83-84. [Journal Article] Hunter, R.B. and P.A. Medica. 1989. Status of the flora and fauna on the Nevada Test Site in 1987. Reynolds Elect. & Eng. Co., Inc. DOE/NV/10630-2. 103pp. [Technical Report] Turner, F.B., P.A. Medica and R.B. Bury. 1987. Age-size relationships of desert tortoises (Gopherus agassizii) in southern Nevada. Copeia. 1987. (4):974-979. [Journal Article] Smith, D.D., P.A. Medica, and S.R. Sanborn. 1987. Ecological comparison of sympatraic populations of sand lizards (Cophosaurus texanus and Callisaurus draconoides). Great Basin Nat. 47(2):175-185. [Journal Article] Nagy, K.A. and P.A. Medica. 1986. Physiological ecology of desert tortoises in southern Nevada. Herpetologica. 42(1):73-92. [Journal Article] Medica, P.A., C.L. Lyons, and F.B. Turner. 1986. "Tapping": A technique for capturing tortoises. Herpetological Rev. 17(1):15-16. [Journal Article] Nagy, K.A. and P.A. Medica. 1985. Altered energy metabolism in an irradiated population of lizards at the Nevada Test Site. Radiation Res. 103(1):98-104. [Journal Article] Turner, F.B., P.A. Medica, and C.L. Lyons. 1984. Reproduction and survival of the desert tortoise (Scaptochelys agassizii) in Ivanpah Valley, California. Copeia. 1984. (4):811-820. [Journal Article] Medica, P.A. and F.B. Turner. 1984. Natural longevity of lizards in southern Nevada. Herpetological Rev. 15(2):34-35 [Journal Article] Turner, F.B., P.A. Medica, R.I. Jennrich, and B.G. Maza. 1982. Frequencies of broken tails among Uta stansburiana in southern Nevada and a test of the predation hypothesis. Copeia. 1982. (4):835-840. [Journal Article] Turner, F.B. and P.A. Medica. 1982. The distribution and abundance of the flat-tailed horned lizard (Phrynosoma mcallii). Copeia. 1982 (4):815-823. [Journal Article] Turner, F.B., P.A. Medica. K.W. Bridges, and R.I. Jennrich. 1982. A population model of the lizard Uta stansburiana, in southern Nevada. Ecological Monographs. 52(3):243-259. [Journal Article] Medica, P.A., C.L. Lyons, and F.B. Turner. 1981. A comparison of populations of desert tortoises, Gopherus agassizii in grazed and ungrazed areas in Ivanpah Valley, California. Bureau of Land Management. Final Report. 60pp. [Technical Report] Turner, F.B., P.A. Medica, and C.L. Lyons. 1981. A comparison of populations of desert tortoises, Gopherus agassizii, in grazed and ungrazed areas in Ivanpah Valley, California. Proc. International Herpetological Congress, Oxford, England. Abstract:20-21. [Technical Report] Medica, P.A., T.P. O'Farrell, and E. Collins. 1981. Survey of Yucca Mountain, Forty-Mile Canyon, and Jackass Flats in Nye County, Nevada, for desert tortoise, Gopherus agassizii. 1183-2438:1-10. [Technical Report] Davis, J. and P.A. Medica. 1981. Geographic distribution: Rhinocheilus lecontei. Herpetological Rev. 12(2):66. [Journal Article] Medica, P.A. 1980. Locality records of Rhinocheilus lecontei in the United States and Mexico. Herpetological Rev. 11(2):42. [Journal Article] Medica, P.A., R.B. Bury, and R. Luckenbach. 1980. Drinking and construction of water catchments by the desert tortoise, Gopherus agassizii, in the Mojave Desert. Herpetologica. 36(4):301-304. [Journal Article] Turner, F.B., P.A. Medica, and C.L. Lyons. 1980. A comparison of populations of the desert tortoise (Gopherus agassizii) in grazed and ungrazed areas in Ivanpah Valley, California. Bureau of Land Management Report. 66pp. [Technical Report] Turner, F.B., P.A. Medica, and H.O. Hill. 1978. The status of the flat-tailed horned lizard, (Phrynosoma mcallii), at nine sites in Imperial and Riverside counties, California. Bureau of Land Management Final Report on Contract YA-512-CT-58. [Technical Report] Pearson, A.K., P. Licht, K.A. Nagy, and P.A. Medica. 1978. Endocrine function and reproductive impairment in an irradiated population of the lizard Uta stansburiana. Radiation Res. 76:610-623. [Journal Article] Nagy, K.A. and P.A. Medica. 1977. Seasonal water and energy relations of free-living desert tortoises in Nevada: A Preliminary Report. Proc. Desert Tortoise Council Symposium: 152-157. [Journal Article] Turner, F.B. and P.A. Medica. 1977. Sterility among female lizards (Uta stansburiana) exposed to continuous gamma irradiation. Radiation Res. 70:154-163. [Journal Article] Turner, F.B., P.A. Medica, and B.W. Kowalewsky. 1976. Energy utilization by a desert lizard (Uta stansburiana). U.S. International Biological Program, Desert Biome Monograph No. 1., 57pp. [Journal Article] Medica, P.A. and F.B. Turner. 1976. Reproduction by Uta stansburiana in southern Nevada. J. Herpetology. 10(2):123-128. [Journal Article] Medica, P.A. and R.G. Arndt. 1976. Opportunistic feeding in Sceloporus horridus from Jalisco, Mexico. Great Basin Nat. 36(2):108-110. [Journal Article] Vollmer, A.T., B.G. Maza, P.A. Medica, F.B. Turner, and S.A. Bamberg. 1976. The impact of off-road vehicles on a desert ecosystem. Environmental Management. 1(2):115-129. [Journal Article] Medica, P.A. and R.G. Arndt. 1975. Additional records of reptiles from Jalisco, Mexico. Great Basin Nat. 35(3):317-318. [Journal Article] Medica, P.A., R.B. Bury, and F.B. Turner. 1975. Growth of the desert tortoise (Gopherus agassizi) in Nevada. Copeia. 1975(4):639-643. [Journal Article] Medica, P.A. and F.B. Turner. 1975. Studies of reptiles in Rock Valley. In F.B. Turner (ed.) Rock Valley Validation Site Report. U.S. International Biological Program, Desert Biome Research Memo., RM 75-2:46-48. [Technical Report] Medica, P.A. 1975. Rhinocheilus generic, and Rhinocheilus lecontei species accounts. Catalog of American Amphibians and Reptiles. 175.1-175.4. [Journal Article] Turner, F.B., E.M. Romney, R.F. Logan, F.D. Leavitt, T.L. Ackerman, G.V. Alexander, B.G. Maza, P.A. Medica, and A.T. Vollmer. 1975. Preliminary analyses of soils and vegetation in the vicinity of the Mohave Generating Station in southern Nevada. UCLA Report No. 12-990, 102pp. [Technical Report] Medica, P.A. and B.G. Maza. 1974. Geographic distribution: Masticophis bilineatus. Herpetological Rev. 5(3):70. [Journal Article] Medica, P.A. and L.J. Vitt. 1974. Geographic distribution: Eumeces gilberti arizonensis. Herpetological Rev. 5(3):69-70. [Journal Article] Turner, F.B., P.A. Medica, and D.D. Smith. 1974. Reproduction and survivorship of the lizard, Uta stansburiana, and the effects of winter rainfall, density and predation on these processes. U.S. International Biological Program, Desert Biome Research Memo. RM 74-26: 117-128. [Technical Report] Medica, P.A. and D.D. Smith. 1974. Studies of reptiles in Rock Valley. In F.B. Turner and J.F. McBrayer (eds.) Rock Valley Validation Site Report. U.S. International Biological Program, Desert Biome Research Memo., RM 74:49-51. [Technical Report] Mullen, R.K. and P.A. Medica. 1974. Internal dosimetry in small vertebrates resident in a fallout field. Trans. Amer. Nuclear Soc. (Abstract) 18:391. [Journal Article] Turner, F.B., P.A. Medica, and D.D. Smith. 1973. Studies of reptiles in Rock Valley. In F.B. Turner (Coordinator) Rock Valley Validation Site Report. U.S. International Biological Program, Desert Biome Research Memo. 73-2:2.2.2.2. -168 -2.2.2.2. -173. [Technical Report] Turner, F.B., P.A. Medica, and D.D. Smith. 1973. Reproduction and survivorship of the lizard, Uta stansburiana, and the effects of winter rainfall, density and predation on these processes. U.S. International Biological Program, Desert Biome Research Memorandum RM 73-26:2.3.2.9.-1 - 2.3.2.9. - 19. [Technical Report] Turner, F.B., P. Licht, J.D. Thrasher, P.A. Medica, and J.R. Lannom, Jr. 1973. Radiation-induced sterility in natural populations of lizards (Crotaphytus wislizenii and Cnemidophorus tigris). Proc. 3rd Natl. Radioecology Symposium. pp. 1131-1143. [Journal Article] Medica, P.A., F.B. Turner, and D.D. Smith. 1973. Effects of radiation on a fenced population of horned lizards (Phrynosoma platyrhinos) in southern Nevada. J. Herpetology 7:79-85. [Journal Article] Smith, D.D. and P.A. Medica. 1973. Geographic distribution: Thamnophis cyrtopsis. Hiss News - Jour. 1(5):153. [Journal Article] Medica, P.A., F.B. Turner, and D.D. Smith. 1973. Hormonal induction of color change in female leopard lizards (Crotaphytus wislizenii). Copeia. 1973 (4):658-661. [Journal Article] Medica, P.A., G.A. Hoddenbach, and J.R. Lannom, Jr. 1971. Lizard sampling techniques. Rock Valley Misc. Publs. No. 1, 55pp. [Journal Article] Turner, F.B., G.A. Hoddenbach, P.A. Medica, and J.R. Lannom. 1970. The demography of the lizard, Uta stansburiana Baird and Girard, in southern Nevada. J. Animal Ecol. 39:505-519. [Journal Article] Turner, F.B., P.A. Medica, J.R. Lannom, Jr., and G.A. Hoddenbach. 1969. A demographic analysis of continuously irradiated and nonirradiated populations of the lizard, Uta stansburiana. Radiation Res. 38:349-356. [Journal Article] Turner, F.B., P.A. Medica, J.R. Lannom, Jr., and G.A. Hoddenbach. 1969. A demographic analysis of fenced populations of the whiptail lizard, Cnemidophorus tigris, in southern Nevada. Southwestern Nat. 14:189-202. [Journal Article] Turner, F.B., J.R. Lannom, Jr., P.A. Medica, and G.A. Hoddenbach. 1969. Density and composition of fenced populations of leopard lizards (Crotaphytus wislizenii) in southern Nevada. Herpetologica. 25:247-257. [Journal Article] Medica, P.A. 1967. Food habits, habitat preference, reproduction and diurnal activity in four sympatric species of whiptail lizards (Cnemidophorus) in south central New Mexico. Bull. S. Calif. Acad. Sci. 66:251-276. [Journal Article] Taylor, H.L., J.M. Walker, and P.A. Medica. 1967. Males of three normally parthenogenetic species of teiid lizards (Genus Cnemidophorus). Copeia 1967 (4):737-743. [Journal Article] Dixon, J.R. and P.A. Medica. 1966. Summer food of four species of lizards from the vicinity of White Sands, New Mexico. Los Angeles County Museum Cont. Sci. No.121:1-6. [Journal Article] Taylor, H.L. and P.A. Medica. 1966. Natural hybridization of the bisexual teiid lizard Cnemidophorus inornatus and the unisexual Cnemidophorus perplexus in southern New Mexico. Univ. Colorado Studies, Series in Biology. No. 22:1-9. [Journal Article] Medica, P.A. 1965. Altitude record for Gerrhonotus kingi. Herpetologica. 21:147-148. [Journal Article] Dixon, J.R. and P.A. Medica. 1965. Noteworthy records of reptiles from New Mexico. Herpetologica. 21:72-75. [Journal Article] Medica, P.A. 1962. The Texas lyre snake, Trimorphodon vilkinsoni, in New Mexico. Herpetologica. 18:65. [Journal Article]