Roger L Hothem

USGS Dixon Field Station
6924 Tremont Road
Dixon, CA 95620-9648
Phone: (707) 678-0682 x626
Fax: (707) 678-5039
Email: roger_hothem@usgs.gov

• Avian Ecology
• Contaminants
• Ecological implications of contaminants
• Ecotoxicology
• Migratory bird biology
• Ornithology
• Wetland ecology

• M.S., Wildlife Management, School of Nat. Res., Ohio State University, Columbus, OH 1972
• B.S., Zoology, Ohio State University, Columbus, OH 1968

• Northern California Chapter, Society of Environmental Toxicology and Chemistry
• The Waterbird Society
• The Wildlife Society

• Biologist, Small Watershed Planning Unit, Ohio Dept. of Natural Resources, Columbus, Ohio, 1972-1974
• Research Wildlife Biologist, Dixon Field Station, Western Ecological Research Center, USGS, Dixon, CA, 2003-Present
• Wildlife Biologist (Research), Davis Field Station, Western Ecological Research Center, USGS, Davis, CA, 1993-2003
• Wildlife Biologist (Research), Pacific Research Group, Environmental Contaminants Research Branch, Patuxent Wildlife Research Center, USFWS, Davis, CA, 1984-1993
• Wildlife Biologist (Research), Dixon Field Station, Section of Bird Damage Control, Denver Wildlife Research Center, USFWS, Dixon, CA, 1977-1984
• Forestry Aide, Forest, Insect, Disease Mgt., U.S. Forest Service, Missoula, Montana, 1976-1977

• Hothem, R.L. 2008. Mercury contamination in Foothill Yellow-legged Frogs (Rana boylii) and Invertebrates from Harley Gulch, California, 2007. Administrative Report prepared by the U.S. Geological Survey for the Bureau of Land Management, 24pp.[Technical Report]
• Hothem, R.L., B.S. Trejo, M.L. Bauer, and J.J. Crayon. 2008. Cliff swallows Petrochelidon pyrrhonata as bioindicators of environmental mercury, Cache Creek Watershed, California. Archives of Environmental Contamination and Toxicology 55:111-121.[Journal Article]
• Hothem, R.L., D.R. Bergen, and C. Hellwig. 2008. Reproductive Success of Black-crowned Night-Herons and Snowy Egrets at Alcatraz Island, San Francisco Bay, California: 2007. Administrative Report prepared for Golden Gate National Recreation Area, National Park Service, 39 pp.[Technical Report]
• Hothem, R.L., and D.R. Bergen. 2007. Reproductive success of black-crowned night-herons and snowy egrets at Alcatraz Island, San Francisco Bay, California: 2006. Administrative Report prepared by U.S. Geological Survey for Golden Gate National Recreation Area, National Park Service, 24pp.[Technical Report]
• Hothem, R.L., D.R. Bergen, M.L. Bauer, J.J. Crayon, and A.M. Meckstroth. 2007. Mercury and trace elements in crayfish from Northern California. Bulletin of Environmental Contamination and Toxicology 79:628-632.[Journal Article]
• 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]
• Hothem, R.L., J.J. Crayon, and M.A. Law. 2006. Effects of contaminants on reproductive success of aquatic birds nesting at Edwards Air Force Base, California. Archives of Environmental Contamination and Toxicology 51:711-719.[Journal Article]
• Hothem, R.L., J.T. May, and C.N. Alpers. 2006. Biosentinels of methylmercury exposure in areas affected by abandoned gold and mercury mines: Why not the ubiquitous water strider? Mercury 2006 Eighth International Conference on Mercury as a Global Pollutant, Madison, WI, August 6-11, 2006.[Poster with Abstract]
• J.T. May, R.L. Hothem, L.R. Brown, J.N. Moore, J.K. Gibson, J.R. Rytuba, and C.N. Alpers. 2006. Comparison of mercury bioaccumulation in adjacent watersheds influenced by historical mining in the Klamath-Trinity Mountains, California. Mercury 2006 Eighth International Conference on Mercury as a Global Pollutant, Madison, WI, August 6-11, 2006.[Poster with Abstract]
• M.S. Bank, J.B. Crocker, J.L. Wachtl, P. Kleeman, C. Currens, G. Fellers, J. May, R. Hothem, J.P. Wise, Sr., and M.A. Madej. 2006. Mercury Bioaccumulation in Pacific Giant Salamander Larvae from Lotic Ecosystems in the Pacific Northwestern United States. Mercury 2006 Eighth International Conference on Mercury as a Global Pollutant, Madison, WI, August 6-11, 2006.[Poster with Abstract]
• R.L. Hothem, J.T. May, M.R. Jennings, and J.J. Crayon. 2006. Amphibians: Bioindicators of mercury accumulation in areas of Northern California affected by historical mercury and gold mining. Poster for The Wildlife Society,13th Annual Conference, Anchorage, Alaska, September 23-27, 2006.[Poster with Abstract]
• 2005 Rattner, B.A., K.M. Eisenreich, M.A. McKernan, B.K. Ackerson, R.L. Hothem, and T.W. Custer. Contaminant exposure, data, and monitoring priorities for terrestrial vertebrates at National Parks and Wildlife Refuges. "People, Places, and Parks: Preservation for Future Generations" The 2005 George Wright Society Biennial Conference on Parks, Protected Areas, and Cultural Sites, Philadelphia, PA, March 14-18, 2005.[Poster with Abstract]
• 2005 Alpers, C.N., M.P. Hunerlach, M. Marvin-DiPasquale, J.T. May, R.L. Hothem, M.K. Saiki, A.R. Stewart, J.S. Kuwabara, H.E. Taylor, and D.P. Krabbenhoft. 2005. Mercury contamination, methylation, and bioaccumulation associated with historical gold mining, Sierra Nevada, California. 2005 joint meeting of the Geological Association of Canada, the Mineralogical Association of Canada, the Canadian Society of Petroleum Geologists, and the Canadian Society of Soil Sciences, Halifax, Nova Scotia, Canada, May 15-18, 2005.[Presentation]
• 2005 Lawler, D.A., C.N. Alpers, M.P. Hunerlach, J.T. May, R.L. Hothem, R.D. Humphreys, and G.J. Reller. 2005. Mercury contamination of water, sediment, and biota by historical placer gold mining in the upper American River Watershed. American River Watershed Conference, Sacramento, CA, April 21-23, 2005.[Presentation]
• Alpers, C.N., M.P. Hunerlach, J.T. May, and R.L. Hothem. 2005. Mercury Contamination from Historical Gold Mining in California, Fact Sheet 2005-3014 Version 1.1.[Fact Sheet]
• Alpers, C.N., M.P. Hunerlach, J.T. May, R.L. Hothem, H.E. Taylor, R.C. Antweiler, J.F. DeWild, and D.A. Lawler. 2005. Geochemical Characterization of Water, Sediment, and Biota Affected by Mercury Contamination and Acidic Drainage from Historical Gold Mining, Greenhorn Creek, Nevada County, California, 1999-2001, USGS SIR 2004-5251.[Technical Report]
• Custer, C.M., T.W. Custer, S. Gerould, C.J. Henny, R.L. Hothem, J.R. Longcore, M.J. Melancon, M.A. Mora-Zacarias. 2005. Swallow research in the USGS Contaminant Biology Program. White Paper Report prepared for the USGS Contaminant Biology Program, 14 pp.[Technical Report]
• Jennings, M.R., and R.L. Hothem. 2005. Clemmys marmorata (Pacific Pond Turtle) diet. Herpetological Review 36:56.[Journal Article]
• Jennings, M.R., J.J. Crayon, and R.L. Hothem. 2005. Bufo boreas halophilus (California toad) and Rana catesbeiana (bullfrog)-amplexus. Herpetological Review 36:53.[Journal Article]
• May, J, L. Brown, R. Hothem, J. Moore, and J.Gibson. 2005. French fire contaminants assessment: preliminary report, September 2005. Administrative Report prepared for the Whiskeytown National Recreation Area, 31 pp. [Technical Report]
• May, J.T., Hothem, R.L., and Alpers, C.N., 2005, Mercury concentrations in fishes from select water bodies in Trinity County, California: U.S. Geological Survey Open-File Report 2005-1321.[Technical Report]
• McKernan, M.A., B.A. Rattner, B.K. Ackerson, K.M. Eisenreich, N.H. Golden, A.M. Meckstroth, R.L. Hothem, and T.W. Custer. 2005. Retrospective ecotoxicological data and information needs for terrestrial vertebrates residing in the Great Lakes and coastal habitats of the United States. Poster for Session 23, Wildlife Toxicology, The Wildlife Society 12th Annual Conference, September 25-29, 2005, Madison, WI.[Poster]
• Rattner, B.A., K.M. Eisenreich, N.H. Golden, M.A. McKernan, R.L. Hothem, and T.W. Custer. 2005. Retrospective ecotoxicological data and current information needs for terrestrial vertebrates residing in coastal habitat of the United States. Archives of Environmental Contamination and Toxicology 48:1-9.[Journal Article]
• Alpers, C.N., M.P. Hunerlach, M.C. Marvin-DiPasquale, J.T. May, R.L. Hothem, M.K. Saiki, A.R. Stewart, J.S. Kuwabara, H.E. Taylor, and D.P. Krabbenhoft. 2004. Mercury cycling and bioaccumulation in fish in northern Sierra Nevada watersheds contaminated by historical gold mining. California-Nevada and Humboldt chapters of the American Fisheries Society 38th Annual Meeting, April 22-24, 2004, Redding, CA[Presentation]
• Hothem, R. L., Black-Crowned Night-Heron Nesting on Alcatraz Island: a 13-Year Study on “the Rock” (April 2004) [Publication Brief]
• Hothem, R.L. 2004. California Abandoned Mine Lands: Biomonitors of Contamination by Mercury and Other Metals. Swallow Workshop, Sept. 20-22, 2004, La Crosse, WI.[Presentation]
• Hothem, R.L. 2004. Bioindicators of contamination by mercury and other metals in waters of Northern California impacted by abandoned mines. National Research Council's “Committee on River Science at the USGS” meeting, Sacramento, CA, October 7, 2004.[Presentation]
• Hothem, R.L., and D. Hatch. 2004. Reproductive success of the Black-crowned Night Heron at Alcatraz Island, San Francisco Bay, California, 1990-2002. Waterbirds 27:112-125.[Journal Article]
• Hothem, R.L., R.P. Ashley, J.T. May, and J.J. Rytuba. 2004. Mercury in biota from the Lower Clear Creek Restoration Area, Shasta County, California. California-Nevada and Humboldt chapters of the American Fisheries Society 38th Annual Meeting, April 22-24, 2004, Redding, CA.[Presentation]
• May, J.T., R.L. Hothem, and C.N. Alpers. 2004. Spatial and Temporal Trends of Mercury and Methylmercury in Aquatic Insects Associated with Historical Gold Mines in Northern California, U. S. A. Annual Meeting of the North American Benthological Society, Vancouver, B.C., June 6-10, 2004.[Poster with Abstract]
• May, J.T., R.L. Hothem, J.J. Rytuba, W.G. Duffy, C.N. Alpers, R.P. Ashley, and M.P. Hunerlach. 2004. Mercury concentrations in sediment, water, and aquatic biota from the Trinity River Watershed, 2000-2003. California-Nevada and Humboldt chapters of the American Fisheries Society 38th Annual Meeting, April 22-24, 2004, Redding, CA[Presentation]
• McKernan, M.A. R.L. Kershnar, A.M. Meckstroth, K.M. Eisenreich, N.H. Golden, B.A. Rattner, and R.L. Hothem. 2004. Countering Contamination Website: Data and DDE – A New Online Tool for Educators. Chesapeake and Potomac Regional Chapter meeting of the Society of Environmental Toxicology and Chemistry. NCTC, April 23, 2004.[Poster with Abstract]
• McKernan, M.A., R.L. Kershnar, A.M. Meckstroth, K.M. Eisenreich, N.H. Golden, R.L. Hothem, and B.A. Rattner. 2004. Ecotoxicological Information for Teachers and Students: Wildlife and Contaminants Online. Proceedings of the Twenty-fifth Annual Meeting of the Society of Environmental Toxicology and Chemistry, November 22-24, 2004, Portland, OR.[Poster with Abstract]
• Meckstroth, A.M., M.A. McKernan, M.A., R.L. Kershnar, K.A. DeClercq, K.M. Eisenreich, N.H. Golden, R.L. Hothem, and B.A. Rattner. 2004. Countering Contamination Website: Data and DDE - A New Online Tool for Educators. California Science Teacher Association Conference, San Jose, California, October 14-17, 2004.[Poster]
• Rytuba, J.J., R.L. Hothem, J.T. May, and R.P. Ashley. 2004. Minimizing mercury mobility and methylation in the Clear Creek and Trinity River Restoration Projects, California. Third Biennial CalFed Bay-Delta Program Science Conference, Sacramento, CA, October 4-6, 2004.[Presentation with Abstract]
• Eisenreich, K.M., N.H. Golden, B.A. Rattner, R.L. Kershnar, and R.L. Hothem. 2003. Terrestrial vertebrate ecotoxicological data gaps for the United States Pacific and Gulf Coasts. Proceedings of the Twenty-fourth Annual Meeting of the Society of Environmental Toxicology and Chemistry, November 8-13, 2003, Austin, TX.[Poster with Abstract]
• Hothem, R.L., J.N. Moore, J.T. May, J. Gibson, and B. Rasmussen. 2003. Metals contamination at Whiskeytown National Recreation Area, California: An assesment of the effects of historical mining on the environmental quality of aquatic ecosystems. The George Wright Society Biennial Conference. Protecting our diverse heritage: The role of parks, protected areas, and cultural sites. The GWS/CR2003 Joint Conference, April 13-18, 2003, San Diego, California.[Poster with Abstract]
• Alpers, C.N., M.P. Hunerlach, J.T. May, R.L. Hothem, H.E. Taylor, D.B. Peart, M. C. Marvin-Dipasquale, J.F.DeWild, and D.P. Krabbenhoft. 2002. Environmental legacy of the California gold rush: 1. Mercury contamination and bioaccumulation associated with abandoned placer-gold mines. Geological Society of America Fall Meeting, October 27-30, 2002, Denver, Colorado.[Presentation]
• Alpers, C.N., M.P. Hunerlach, R.L. Hothem, and J.T. May. 2002. Mercury contamination associated with historical gold mining in the Bear-Yuba watersheds, Sierra Nevada, California. Annual Meeting of the Association of Engineering Geologists, September 2002, Reno, Nevada.[Presentation]
• Hothem, R.L., and D. Hatch. 2002. Reproductive success of black-crowned night-herons at Alcatraz Island, San Francisco Bay, California, 1990-2002. Twenty Sixth Annual Waterbird Society Meeting, LaCrosse, WI, November 7, 2002.[Presentation with Abstract]
• May, J.T., R.L. Hothem, W.G. Duffy, C.N. Alpers, and J.J. Rytuba. 2002. Mercury bioaccumulation from historical mining in the Trinity River Watershed, California. Proceeding of the Twenty-third Annual Meeting of the Society of Environmental Toxicology and Chemistry, Salt Lake City, Utah, November 16-20, 2002, P215.[Poster with Abstract]
• Rattner, B.A., R.L. Kershnar, R.L. Hothem, N.H. Golden, K.M. Eisenreich, and S. Gerould. 2002. Mercury bioaccumulation in terrestrial vertebrates residing in U.S. coastal and estuarine habitat. Proceedings of the Twenty-third Annual Meeting of the Society of Environmental Toxicology and Chemistry, Salt Lake City, November 16-20, 2002, Utah, P281.[Poster with Abstract]
• Takekawa, J.Y., S.E. Wainwright-De La Cruz, R.L. Hothem, and J. Yee. 2002. Relating body condition to inorganic contaminant concentrations of diving ducks wintering in coastal California. Arch. Environ. Contam. Toxicol. 42:60-70.[Journal Article]
• Alpers, C.N., M.P. Hunerlach, R.L. Hothem, J.T. May, H.E. Taylor, J. DeWild, Mark Olson, and D.P. Krabbenhoft. 2001. Mercury and methylmercury in water, sediment, and biota in an area impacted by historic gold mining: the Bear River and South Yuba River watersheds, California. US EPA Workshop on the Fate, Transport, and Transformation of Mercury in Aquatic and Terrestrial Environments, May 8-10, 2001. West Palm Beach, FL.[Poster with Abstract]
• Alpers, C.N., M.P. Hunerlach, R.L. Hothem, J.T. May, J.J. Rytuba, and D. Lawler. 2001. Mercury contamination of water, sediment, and biota in watersheds affected by historic hydraulic gold mining in California. 2001 Department of the Interior Conference on the Environment, March 13-15, Albuquerque, New Mexico.[Presentation with Abstract]
• Hothem, R.L., J.T. May, M.R. Jennings, M.A. Law, J.J. Crayon, and M.T. Atamian. 2001. Mercury contamination of biota associated with abandoned mine lands: Cache Creek, Bear River, and South Yuba river Watersheds, California. Eighth Annual Conference of The Wildlife Society, September 25-29, 2001, Reno, NV.[Presentation with Abstract]
• Kershnar, R., R. Hothem, B. Rattner, and N. Golden. CEE-TV: Contaminant exposure and effects-terrestrial vertebrates database. Puget Sound Research 2001, The Puget Sound/Georgia Basin Ecosystem: Status, stressors, and the road to recovery, Feb. 12-14, 2001, Bellevue, Washington.[Poster]
• Kershnar, R.L., R.L. Hothem, B.A. Rattner, and N.H. Golden. 2001. Contaminant exposure and effects-terrestrial vertebrates database (CEE-TV) Pacific Coast patterns. Eighth Annual Conference of The Wildlife Society, September 25-29, 2001, Reno, NV.[Poster with Abstract]
• Lawler, D., J. Clayton, C.N. Alpers, M.P. Hunerlach, R.L. Hothem, J.T. May, and J.J. Rytuba. 2001. Mercury contamination of water, sediment, and biota in watersheds affected by historic hydraulic gold mining in California. California Mining: 2001, Conference of the California Mining Association, Monterey, CA, May 23-25, 2001.[Presentation]
• May, J.T., R.L. Hothem, C.N. Alpers, and M.A. Law. Elevated mercury concentrations in game fish associated with historical gold mining in the South Yuba River, Deer Creek, and Bear River watersheds, California. Northern California Regional Chapter, Society of Environmental Toxicology and Chemistry, 11th Annual Meeting, June 17-19, 2001, University of California, Santa Cruz.[Presentation with Abstract]
• May, J.T., R.L. Hothem, C.N. Alpers, and M.A. Law. Mercury bioaccumulation in sportfish associated with historic gold mining in the Bear River and South Yuba River watersheds. Symposium and 35th Annual Meeting American Fisheries Society, California-Nevada chapter and Humboldt Chapter, March 29-31, 2001, Santa Rosa, CA.[Presentation with Abstract]
• Takekawa, J.Y., S.E. Wainwright-De La Cruz, R.L. Hothem, and J. Yee. 2001. Relating body condition and contaminant burdens of diving ducks wintering in coastal California. Eighth Annual Conference of The Wildlife Society, September 25-29, 2001, Reno, NV.[Poster with Abstract]
• Hothem, R.L. and A.N. Powell. 2000. Contaminants in eggs of western snowy plovers and California least terns: Is there a link to population decline? Bull. Environ. Contam. Toxicol. 65 (1):42-50.[Journal Article]
• Hothem, R.L., J.T. May, M.R. Jennings, M.A. Law, C.N. Alpers, and M.P. Hunerlach. 2000. Biological indicators of mercury contamination from historic gold mining in the Bear River and Yuba River watershed, California. Assessing and managing mercury from historic and current mining activities conference, San Francisco, CA November 28-30, 2000.[Presentation with Abstract]
• May, J.T., R.L. Hothem, C.N. Alpers, and M.A. Law. 2000. Mercury bioaccumulation in fish in a region affected by historic gold mining: the South Yuba River, Deer Creek, and Bear River Watersheds, California, 1999. Open-File Report 00-367, U.S. Geological Survey, Sacramento, CA, 35 pp.[Technical Report]
• Howell, J.A., D.A. Hatch, R.L. Hothem, A. Fish, W. Sydeman, and M.E. Brown. 1999. The role of island biogeography in the management of wildlife on Alcatraz Island, Golden Gate National Recreation Area, California. 4th International Symposium on Urban Wildlife, May 1999, Tucson, Arizona.[Presentation with Abstract]
• Crayon, J. J. and R. L. Hothem. 1998. Xenopus laevis (African clawed frog) Predation. Herpetological Review 29:165.166.[Journal Article]
• Hothem, R. L., D. G. Lonzarich, J. E. Takekawa, and H. M. Ohlendorf. 1998. Contaminants in wintering canvasbacks and scaups from San Francisco Bay, California. Environmental Monitoring and Assessment 50:67.84.[Journal Article]
• Hui, C. A., R. L. Hothem, M. R. Jennings, A. K. Miles, and M. K. Saiki. 1998. Potential impacts of contaminants on wildlife resources at Edwards Air Force Base: recommendations for research. Final draft report to Edwards Air Force Base for MIRP # F04611-95-0232. U.S. Geological Survey, Biological Resources Division, California Science Center, Davis Field Station, University of California, Davis, California. ii+58 pp.[Technical Report]
• Rattner, B. A., M. J. Melancon, T. W. Custer, and R. L. Hothem. 1996. Cytochrome P450 and contaminant concentrations in nestling black-crowned night-herons and their interrelation with sibling embryos. Environmental Toxicology and Chemistry 15:715.721.[Journal Article]
• Clark, D. R., Jr., E. L. Flickinger, D. H. White, R. L. Hothem, and A. A. Belisle. 1995. Dicofol residues in lizard carcasses and bird eggs from Texas, Florida, and California. Bulletin of Environmental Contamination and Toxicology, 54:817.824.[Journal Article]
• Hothem, R. L. and S. G. Zador. 1995. Environmental contaminants in eggs of California least terns (Sterna antillarum browni). Bulletin of Environmental Contamination and Toxicology 55:658.665.[Journal Article]
• Hothem, R. L., D. L. Roster, K. A. King, T. J. Keldsen, K. C. Marois, and S. E. Wainwright. 1995. Spatial and temporal trends of contaminants in eggs of wading birds from San Francisco Bay, California. Environmental Toxicology and Chemistry 14:1319.1331.[Journal Article]
• Ohlendorf, H. M. and R. L. Hothem. 1995. Agricultural drainwater effects on wildlife in Central California. Pages 577-595 In Hoffman, D. J., B. A. Rattner, G. A. Burton, Jr., and J. Cairns, Jr. (eds.), Handbook of Ecotoxicology, Lewis Publishers, Inc., Boca Raton, Florida.[Book Chapter]
• Hothem, R. L. and D. Welsh. 1994. Avian reproduction in the Grasslands of Central California. California Fish and Game 80:68.79.[Journal Article]
• Hothem, R. L. and D. Welsh. 1994. Contaminants in eggs of aquatic birds from the Grasslands of Central California. Archives of Environmental Contamination and Toxicology 27:180.185.[Journal Article]
• Rattner, B. A., M. J. Melancon, T. W. Custer, R. L. Hothem, K. A. King, L. J. LeCaptain, J. W. Spann, B. R. Woodin, and J. E. Stegeman. 1993. Biomonitoring environmental contamination with pipping black-crowned night heron embryos: induction of cytochrome P-450. Environmental Toxicology and Chemistry 12:1719.1732.[Journal Article]
• Clark, D. R., Jr., K. S. Foerster, C. M. Marn, and R. L. Hothem. 1992. Uptake of environmental contaminants by small mammals in pickleweed habitats at San Francisco Bay, California. Archives of Environmental Contamination and Toxicology 22:389.396.[Journal Article]
• Harvey, T. E., K. J. Miller, R. L. Hothem, M. J. Rauzon, G. W. Page, and R. A. Keck. 1992. Status and trends report on wildlife of the San Francisco Estuary. Report for the San Francisco Estuary Project, U.S. Environmental Protection Agency, San Francisco, Calif. 283pp + appendices.[Technical Report]
• Clark, D. R., Jr. and R. L. Hothem. 1991. Mammal mortality at Arizona, California, and Nevada gold mines using cyanide extraction. California Fish and Game 77:61.69.[Journal Article]
• Ohlendorf, H. M., R. L. Hothem, C. M. Bunck, and K. C. Marois. 1990. Bioaccumulation of selenium in birds at Kesterson Reservoir, California. Archives of Environmental Contamination and Toxicology 19:495.507.[Journal Article]
• Hothem, R. L. 1989. Reproductive success of birds in the Grasslands, 1986. Pages 70-81 In Howard, A. Q. (ed.), Selenium and Agricultural drainage: Implications for San Francisco Bay and the California Environment. Proceedings of the Fourth Selenium Symposium, March 21, 1987, Berkeley, California, The Bay Institute of San Francisco, Sausalito, California.[Proceedings]
• Hothem, R. L. and H. M. Ohlendorf. 1989. Contaminants in foods of aquatic birds at Kesterson Reservoir, California, 1985. Archives of Environmental Contamination and Toxicology 18:773.786.[Journal Article]
• Ohlendorf, H. M. and R. L. Hothem. 1989. Aquatic birds and selenium in the San Joaquin Valley and San Francisco Bay. Pages 21-33 In Howard, A. Q. (ed.), Selenium and Agricultural Drainage: Implications for San Francisco Bay and the California Environment. Proceedings of the Third Selenium Symposium, March 15, 1986, Berkeley, California, The Bay Institute of San Francisco, Sausalito, California.[Proceedings]
• Ohlendorf, H. M., R. L. Hothem, and D. Welsh. 1989. Nest success, cause-specific nest failure, and hatchability of aquatic birds at selenium-contaminated Kesterson Reservoir and a reference site. Condor 91:787.796.[Journal Article]
• Williams, M. L., R. L. Hothem, and H. M. Ohlendorf. 1989. Recruitment failure in American avocets and black-necked stilts nesting at Kesterson Reservoir, California, 1984-1985. Condor 91:797.802.[Journal Article]
• Hothem, R. L., R. W. DeHaven, and S. D. Fairaizl. 1988. Bird damage to sunflower in North Dakota, South Dakota, and Minnesota, 1979-1981. U.S. Fish and Wildlife Service, Fish and Wildlife Technical Report 15, 11pp.[Technical Report]
• Ohlendorf, H. M., R. L. Hothem, and T. W. Aldrich. 1988. Bioaccumulation of selenium by snakes and frogs in the San Joaquin Valley, California. Copeia 1988:704.710.[Journal Article]
• Ohlendorf, H. M., R. L. Hothem, T. W. Aldrich, and A. J. Krynitsky. 1987. Selenium contamination of the Grasslands, a major California waterfowl area. Science of the Total Environment 66:169.183.[Journal Article]
• Ohlendorf, H. M., R. L. Hothem, C. M. Bunck, T. W. Aldrich, and J. F. Moore. 1986. Relationships between selenium concentrations and avian reproduction. Transactions of the North American Wildlife and Natural Resources Conference 51:330.342.[Journal Article]
• Skorupa, J. P. and R. L. Hothem. 1984. Consumption of commercially-grown grapes by American robins: a field evaluation of laboratory estimates. Journal of Field Ornithology 56:369.378.[Journal Article]
• Tobin, M. E. and R. L. Hothem. 1983. Diurnal and seasonal abundance patterns of birds in vineyards. Pages 143-149 In W.B. Jackson and B.J. Dodd (eds.), Proceedings of the Ninth Bird Control Seminar, Bowling Green, Ohio.[Proceedings]
• Hothem, R. L. and R. W. DeHaven. 1982. Raptor-mimicking kites for reducing bird damage to wine grapes. Pages 171-178 In R. E. Marsh (ed.), Proceedings of the Tenth Vertebrate Pest Conference, University of California, Davis.[Proceedings]
• DeHaven, R. W. and R. L. Hothem. 1981. Estimating bird damage from damage incidence in wine grape vineyards. American Journal of Enology and Viticulture 32:1.4.[Journal Article]
• Hothem, R. L., D. F. Mott, R. W. DeHaven, and J. L. Guarino. 1981. Mesurol as a bird repellent on wine grapes in Oregon and California. American Journal of Enology and Viticulture 32:150.154.[Journal Article]
• Skorupa, J. P., R. L. Hothem, and R. W. DeHaven. 1980. Foods of breeding tricolored blackbirds in agricultural areas of Merced County, California. Condor 82:465.467.[Journal Article]
• DeHaven, R. W. and R. L. Hothem. 1979. Procedures for visually estimating bird damage to grapes. Pages 198-204 in J. R. Beck (ed.), Vertebrate Pest Control and Management Materials, Special Technical Publication 680, American Society for Testing and Materials, Philadelphia, Pennsylvania.[Journal Article]
• Zabadal, T. J. and R. L. Hothem. 1979. Mesurol--it's for the birds. Wines and Vines 60(11):38,40.41.[Popular Publication]
• Hothem, R. L. 1972. A review of the life history of the southern flying squirrel, Glaucomys volans, and a late winter study of a population in southeastern Ohio. M.S. Thesis. Ohio State University, Columbus.[Thesis/Dissertation]