Glenn D Wylie

USGS Dixon Field Station
6924 Tremont Road
Dixon, CA 95620-9648
Phone: (707) 678-0682 x616
Fax: (707) 678-5039
Email: glenn_wylie@usgs.gov

• Contaminants
• Ecological implications of contaminants
• Herpetology
• Restoration ecology
• Species/Population management
• Telemetry (radio and/or satellite)
• Threatened and endangered species
• Wetland ecology

• Ph.D., Fisheries and Wildlife, University of Missouri-Columbia 1985
• M.S., Fisheries and Wildlife, University of Missouri-Columbia 1979
• B.S., Fisheries and Wildlife, University of Missouri-Columbia 1977

• American Association for the Advancement of Science
• North American Benthological Society
• Society of Wetland Scientists

• Research Wildlife Biologist, USGS, Western Ecological Science Center, Jun 1997-Present
• Research Wildlife Biologist, National Biological Service (Survey), Dixon Field Station, Nov 1993-Jun 1997
• Research Wildlife Biologist, USFWS, Dixon Field Station, Northern Prairie Wildlife Research Center, Oct 1991-Nov 1993
• Research Associate, University of Missouri-Columbia, Columbia National Fisheries Research Center, Jun 1985-Oct 1991

• Coates, P. S., G. D. Wylie, B. J. Halstead, and M. L. Casazza. 2009. Using time-dependent models to investigate body condition and growth rate between sexes of the Giant Gartersnake. The 5th Snake Ecology Group Meeting. July 18-20. Donnelly, Idaho [Poster with Abstract]
• Coates, P. S., G. D. Wylie, B. J. Halstead, and M. L. Casazza. In Press. Using time-dependent models to investigate body condition and growth rate between sexes of the Giant Gartersnake. Journal of Zoology.[Journal Article]
• Coates, P. S., G. D. Wylie, B. J. Halstead, and M. L. Casazza. Using time-dependent models to investigate body condition and growth rate between sexes of the Giant Gartersnake. The Wildlife Society 16th Annual Conference Monterey, California, September 20-24, 2009.[Poster with Abstract]
• Halstead, B. J., G. D. Wylie, M. L. Casazza, and P. S. Coates. In Press. Temporal and maternal effects on the reproductive ecology of the giant gartersnake (Thamnophis gigas). The Southwestern Naturalist.[Journal Article]
• Halstead, B. J., G. D. Wylie, P. S. Coates, and M. L. Casazza. Factor analysis as a tool for identifying threats to and setting conservation priorities for rare species. The Wildlife Society 16th Annual Conference Monterey, California, September 20-24, 2009.[Presentation with Abstract]
• Wylie G. D., M. L. Casazza, B. J. Halstead, and P. S. Coates. 2009. Ecology of the Giant Gartersnake. The 5th Snake Ecology Meeting. July 18-20. Donnelly, Idaho. [Poster with Abstract]
• Wylie, Glenn D., Michael L. Casazza, Brian J. Halstead, and Christopher J. Gregory. 2009. Sex, season, and time of day interact to affect body temperatures of the Giant Gartersnake. Journal of Thermal Biology 34:183-189.[Journal Article]
• Wylie, G.D. and M. Amarello. 2008. Surveys for the current distribution and abundance of Giant Gartersnakes (Thamnophis gigas) in the sourhtern San Joaquin Valley. USGS, BRD, WERC, Dixon Field Station. 24 pp.[Technical Report]
• Wylie, G.D., and M. Amarello. 2008. Results of 2006 Monitoring for Giant Gartersnakes (Thamnophis gigas) For the bank protection project on the left bank of the Colusa Basin Drainage Canal in Reclamation District 108, Sacramento River Bank Protection Project, Phase II. USGS, BRD, WERC, Dixon Field Station. 20 pp.[Technical Report]
• Wylie, Glenn D., Michael L. Casazza, Christopher J. Gregory, and Brian J. Halstead. 2008. Body temperature selection of the Giant Gartersnake. 2008 Joint Meeting of Ichthyologists and Herpetologists. Montreal, Quebec, Canada.[Poster with Abstract]
• G.D. Wylie, and R.L. Hothem. 2006. Metals and trace elements in Giant Garter Snakes (Thamnophis gigas) from the Sacramento Valley, California. Poster for The Wildlife Society, 13th Annual Conference, Anchorage, Alaska, September 23-27, 2006.[Poster with Abstract]
• TAKEKAWA, J. Y., B. N. SACKS, I. WOO, M. L. JOHNSON, AND G. D. WYLIE. 2006. TIDAL SALTMARSH FRAGMENTATION AND PERSISTENCE OF SAN PABLO SONG SPARROWS (MELOSPIZA MELODIA SAMUELIS): ASSESSING BENEFITS OF WETLAND RESTORATION IN SAN FRANCISCO BAY. Studies in Avian Biology 32:238–246[Journal Article]
• Wylie, G.D., and L.L. Martin. 2005. Surveys for giant garter snakes in Solano County: 2005 report. USGS, BRD, WERC Dixon Field Station. 14pp[Technical Report]
• Wylie, G.D. 2004. Results of 2004 monitoring for giant garter snakes (Thamnophis gigas) for the bank protection project on the left bank of the Colusa Basin Drainage Canal in Reclamation District 108, Sacramento River bank protection project, phase II. Progress report for the U.S. Army Corps of Engineers and Reclamation District 108. USGS, BRD Dixon Field Station. 13 pp.[Technical Report]
• Wylie, G.D., M.L. Casazza, and L.L. Martin. 2004. Monitoring giant garter snakes in the Natomas Basin: 2003 results. Progress report for The Natomas Basin Conservancy. USGS, BRD Dixon Field Station. 75pp.[Technical Report]
• Wylie, G.D., M.L. Casazza, and M. Carpenter. 2004. Bullfrogs are significant predators of giant garter snake young of the year. Publication brief. USGS, BRD, Dixon Field Station.[Publication Brief]
• Wylie G. D., M. L. Casazza, and M. Carpenter. 2003. Trophic Interactions Among Non-Native Crayfish and Bullfrogs and Endemic Giant Garter Snakes at Colusa National Wildlife Refuge. California Invasive Species Symposium, Western Section of The Wildlife Society, Sacramento, CA.[Abstract]
• Wylie, G. D. 2003. Giant garter snakes: morphology, population characteristics, habitat use, and movements. Giant garter snake workshop, Sacramento-Shasta Chapter of The Wildlife Society, Elk Grove, CA.[Abstract]
• Wylie, G. D., M. L. Casazza, and M. Carpenter. 2003. Diet of bullfrogs in relation to predation on giant garter snakes at Colusa National Wildlife Refuge. California Fish and Game 89(3): 139-145.[Journal Article]
• Wylie, G.D., M.L. Casazza, and M. Carpenter. 2003. Habitat of giant garter snakes in restored wetlands at Colusa National Wildlife Refuge. Annual meeting of The Wildlife Society, Burlington, VT.[Abstract]
• Wylie, G.D., M.L. Casazza, and M. Carpenter. 2003. Diet of bullfrogs in relation to predation on giant garter snakes at Colusa National Wildlife Refuge. California Fish and Game 89(3): 139-145.[Journal Article]
• Carpenter, N.M., M.L. Casazza, and G.D. Wylie. 2002. Rana catesbeina (bullfrog). Diet. Herpetological Review 33: 130.[Journal Article]
• Wylie, G.D., and M.L. Casazza. 2002. Thermal ecology of giant garter snakes (Thamnophis gigas) in the Sacramento Valley of California. Joint Meeting of Ichthyologists and Herpetologists, Kansas City, Missouri.[Poster]
• Wylie, G.D., and M.L. Casazza. 2002. Thermal ecology of giant garter snakes (Thamnophis gigas) in the Sacramento Valley of California. Joint Meeting of Ichthyologists and Herpetologists, Kansas City, Missouri.[Abstract]
• Wylie, G.D., M. Wolder, M.L. Casazza, and N.M. Carpenter. 2002. Migratory bird use of wetlands restored for giant garter snakes. Pacific Flyway Winter Meeting, Newport, Oregon.[Abstract]
• Wylie, G.D., M. Wolder, M.L. Casazza, N.M. Carpenter. 2002. Migratory bird use of wetlands restored for giant garter snakes. Poster presentation. Pacific Flyway Winter Meeting, Newport, Oregon.[Poster]
• Wylie, G.D., M.L. Casazza, and N.M. Carpenter. 2002. Monitoring giant garter snakes at Colusa National Wildlife Refuge: 2001 progress report. Dixon Field Station, WERC. 10 pp.[Technical Report]
• Wylie, Glenn D. and Lisa L. Martin. 2002. Investigations of Giant Garter Snakes in the Natomas Basin: 2002 Report. Report for The Natomas Basin Conservancy.[Technical Report]
• Wylie, Glenn D., Michael L. Casazza, and Lisa L. Martin. 2002. The Distribution of Giant Garter Snakes and Their Habitat in the Natomas Basin. Report for the U.S. Fish and Wildlife Service.[Technical Report]
• Wylie, Glenn D., Michael L. Casazza, and Lisa L. Martin. 2003. Montioring Giant Garter Snakes at Colusa National Wildlife Refuge: 2002 Progress Report. Report for the U.S. Fish and Wildlife Service.[Technical Report]
• Wylie, G.D. 2001. Habitat use and movements of giant garter snakes in the Sacramento Valley. Symposium of the National Wildlife Rehabilitators Association. Lake Tahoe, NV, March 2001.[Abstract]
• Wylie, G.D., and M.L. Casazza. 2001. Investigations of giant garter snakes in the Natomas Basin: 2001 field season. Progress report for the Natomas Basin Conservancy. 9 pp.[Technical Report]
• Wylie, G.D., and M.L. Casazza. 2001. Response of giant garter snakes to wetland restoration at Colusa National Wildlife Refuge. The Wildlife Society 8th Annual Conference, Reno, NV.[Poster]
• Wylie, G.D., and M.L. Casazza. 2001. Response of giant garter snakes to wetland restoration at Colusa National Wildlife Refuge. The Wildlife Society 8th Annual Conference, Abstracts, Reno, NV, September 2001.[Abstract]
• Wylie, G.D., M.L. Casazza, and C.J. Gregory. 2001. Habitat use of a semi-aquatic snake (Thamnophis gigas, giant garter snake) in the Central Valley of California, USA. Fourth World Congress of Herpetology, Colombo, Sri Lanka, December 2001.[Poster]
• Wylie, G.D., M.L. Casazza, and C.J. Gregory. 2001. Habitat use of a semi-aquatic snake (Thamnophis gigas, giant garter snake) in the Central Valley of California, USA. Fourth World Congress of Herpetology, Colombo, Sri Lanka.[Abstract]
• Casazza, M. L., G. D. Wylie, and C. J. Gregory. 2000. A funnel trap modification for surface collection of aquatic amphibians and reptiles. Herpetological Review 31(2): 91-92.[Journal Article]
• Wylie, G. D. and M. L. Casazza. 2000. Investigations of Giant Garter Snakes in the Natomas Basin:1998-1999 - Project Summary.[Technical Report]
• Wylie, G. D., and M. L. Casazza. 2000. Investigations of giant garter snakes in the Natomas Basin: 2000 field season. December 21, 2000, Dixon Field Station, Dixon, CA. 13 pp.[Technical Report]
• Wylie, G. D., Casazza, M. L., and N. M. Carpenter. 2000. Monitoring Giant Garter Snakes at Colusa National Wildlife Refuge:2000 Progress Report.[Technical Report]
• Wylie, G. D., M. L. Casazza, and N. M. Carpenter. 2000. Monitoring giant garter snakes at Colusa National Wildlife Refuge: 2000 progress report. December 22, 2000. Dixon Field Station, Dixon, CA. 15 pp.[Technical Report]
• Wylie, G.D. 1999. Results of the 1998 survey for giant garter snakes in and around the Grasslands area of the San Joaquin Valley. USGS, Dixon Field Station. 9 pp.[Technical Report]
• Wylie, G.D. 1999. Sacramento Valley Giant Garter Snake Project: 1995-1999. Giant garter snake telemetry database includes dates, locations, and habitat conditions as well as physical measurements of the snakes (weight, length, etc.).[Database Spatial]
• Day, J.H. 1997. Use of harvested rice fields by white geese in the Sacramento Valley. MS thesis. Humboldt State University (Wylie)[Thesis/Dissertation]
• Wylie, G.D., M.L. Casazza, and J.K. Daugherty. 1997. 1996 progress report for the giant garter snake study. USGS, Dixon Field Station, 14 pp.[Technical Report]
• Miller, M.R., and G.D. Wylie. 1996. Preliminary estimate of rice present in strip-harvested fields in the Sacramento Valley, California. California Fish and Game 82(4): 187-191.[Journal Article]
• Miller, M.R., and G.D. Wylie. 1995. Residual rice seed is critical food for waterfowl. California Agriculture 49(6):61.[Journal Article]
• Miller, M.R., and G.D. Wylie. 1994. New rice harvest technique may reduce food for wintering waterfowl. National Biological Survey Research Information Bulletin No. 57.[Newsletter]
• Wylie, G.D., and J.R. Jones. 1991. Assessment of the sensitivity of Missouri reservoirs to acidification. J. Freshwater Ecol. 6(4): 431-437.[Journal Article]
• Wylie, G.D., S.E. Finger, and R.W. Crawford. 1990. Toxicity of municipal wastewater effluents contaminated by pentachlorophenol in southwest Missouri. Environ. Pollut. 64: 43-53.[Journal Article]
• Wylie, G.D. 1987. Decomposition and nutrient dynamics of litter of Quercus palustris and Nelumbo lutea in a wetland complex of southeast Missouri. Arch Hydrobiol. 111: 95-106.[Journal Article]
• Wylie, G.D. and J.R. Jones. 1987. Diel and seasonal changes of dissolved oxygen an pH in relation to community metabolism of a shallow reservoir in southeast Missouri. J. Freshwater Ecol. 4(1): 115-125.[Journal Article]
• Wylie, G.D., and J.R. Jones. 1986. Limnology of a wetland complex in the Mississippi alluvial valley of southeast Missouri. Arch. Hydrobiol. Suppl. 74: 288-314.[Journal Article]
• Wylie, G.D. 1985. Limnology of lowland hardwood wetlands in southeast Missouri. Ph.D. Dissertation. University of Missouri, Columbia. 278 pp.[Thesis/Dissertation]
• Wylie, G.D., J.R. Jones, and B.T. Johnson. 1982. Evaluation of the river die-away biodegradation test. J. Water Pollut. Contr. Fed. 54: 1231-1236.[Journal Article]
• Wylie, G.D., and J.R. Jones. 1981. Minimum requirements for sampling benthic algal biomass in streams. Trans. Missouri. Acad. Sci. 15: 39-42.[Journal Article]
• Wylie, G.D. 1979. An evaluation of the river die-away biodegradation test. M.S. Thesis. University of Missouri, Columbia. 78 pp.[Thesis/Dissertation]