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Todd C. Atwood

Title: Research Wildlife Biologist
Address: 4210 University Dr., Anchorage, AK 99508-4626
Phone: (907) 786-7093
Fax: (907) 786-7150
Email: tatwood@usgs.gov

orcid.org/0000-0002-1971-3110

Image of Todd C. Atwood

Education and/or Training

Ph.D.2006Utah State UniversityWildlife Biology
M.S.2002Purdue UniversityWildlife Ecology
B.S.1999Purdue UniversityWildlife Ecology

Areas of Specialization and/or Research Interests

Spatial ecology, population ecology, predator-prey dynamics, polar bear ecology

Professional Experience

2012 - presentResearch Wildlife Biologist and Project Leader, USGS Alaska Science Center, Anchorage, AK
2008 - 2012Research Wildlife Biologist, USDA/APHIS/WS/National Wildlife Research Center, Fort Collins, CO
2006 - 2008Research Biologist, Research Branch, Arizona Game and Fish Department, Phoenix, AZ
2006Biological Technician, USDA/National Wildlife Research Center, Fort Collins, CO
2002 - 2006Research Assistant, Department of Wildland Resources, Utah State University, Logan UT
2000 - 2002Research Assistant, Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN

Professional Activities and/or Memberships

The Wildlife Society
International Association for Bear Research and Management
American Society of Mammalogists

Honors and/or Awards

2010 USDA/APHIS/WS/National Wildlife Research Center- Outstanding Research Publication
2009 USDA/APHIS/WS/National Wildlife Research Center- Certificate of Merit
2008 USDA/APHIS/WS/National Wildlife Research Center- Outstanding Research Publication
2006 USDA/APHIS/WS/National Wildlife Research Center- Certificate of Merit.
2006-07 American Association for the Advancement of Science- membership award.
2002-03 Presidential Fellowship, Utah State University.
1999 Outstanding Senior in Forestry and Natural Resources, Purdue University.
1999 Senior Academic Merit Award, Purdue University.
1999 William A. Rafferty Award, Purdue University.

Websites of Interest

https://alaska.usgs.gov/science/biology/polar_bears/index.html

Publications

Total pubs: 57

McKinney, M. A., T. C. Atwood, S. Pedro, and E. Peacock. 2017. Ecological change drives a decline in mercury concentrations in Southern Beaufort Sea polar bears. Environmental Science and Technology 51(14):7814-7822. doi:10.1021/acs.est.7b00812 [Details] [Full Publication] [Pub Brief]

Olson, J. W., K. D. Rode, D. L. Eggett, T. S. Smith, R. R. Wilson, G. M. Durner, A. S. Fischbach, T. C. Atwood, and D. C. Douglas. 2017. Collar temperature sensor data reveal long-term patterns in southern Beaufort Sea polar bear den distribution on pack ice and land. Marine Ecology Progress Series 564:211-224. doi:10.3354/meps12000 [Details] [Full Publication] [Pub Brief]

McKinney, M. A., T. C. Atwood, S. J. Iverson, and E. Peacock. 2017. Temporal complexity of southern Beaufort Sea polar bear diets during a period of increasing land use. Ecosphere 8(1):e01633. doi:10.1002/ecs2.1633 [Details] [Full Publication]

Pagano, A. M., K. D. Rode, A. Cutting, M. A. Owen, S. Jensen, J. V. Ware, C. M. Robbins, G. M. Durner, T. C. Atwood, M. E. Obbard, K. R. Middel, G. W. Thiemann, and T. M. Williams. 2017. Using tri-axial accelerometers to identify wild polar bear behaviors. Endangered Species Research 32:19-33. doi:10.3354/esr00779 [Details] [Full Publication]

Atwood, T. C. 2017. Implications of rapid environmental change for polar bear behavior and sociality. Pages 445-462 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.). Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2 [Details] [Full Publication]

Douglas, D. C. and T. C. Atwood. 2017. Uncertainties in forecasting the response of polar bears to global climate change. Pages 463-474 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.). Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2 [Details] [Full Publication]

Durner, G. M. and T. C. Atwood. 2017. Polar bears and sea ice habitat change. Pages 419-444 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.). Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2 [Details] [Full Publication]

Atwood, T. C., C. Duncan, K. A. Patyk, and S. A. Sonsthagen. 2017. Monitoring the welfare of polar bear populations in a rapidly changing Arctic. Pages 503-529 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.). Springer 17, Cham, Switzerland. doi:10.1007/978-3-319-46994-2 [Details] [Full Publication]

Atwood, T. C., K. S. Simac, S. W. Breck, G. York, and J. Wilder. 2017. Human-polar bear interactions in a changing Arctic: existing and emerging concerns. Pages 397-418 in Marine Mammal Welfare: Human Induced Change in the Marine Environment and its Impacts on Marine Mammal Welfare, A. Butterworth (ed.). Springer, Cham, Switzerland. doi:10.1007/978-3-319-46994-2 [Details] [Full Publication]

Wilder, J. M., D. Vongraven, T. C. Atwood, B. Hansen, A. Jessen, A. A. Kochnev, G. York, R. Vallender, D. Hedman, and M. Gibbons. 2017. Polar bear attacks on humans: implications of a changing climate. Wildlife Society Bulletin 41(3):537-547. doi:10.1002/wsb.783 [Details] [Full Publication]

Wilson, R. R., E. V. Regehr, M. St. Martin, T. C. Atwood, E. Peacock, S. Miller, and G. Divoky. 2017. Relative influence of climate change and human activity on the onshore distribution of polar bears. Biological Conservation 214:288-294. doi:10.1016/j.biocon.2017.08.005 [Details] [Full Publication] [Pub Brief]

Algeo, T. P., D. Slate, R. M. Caron, T. C. Atwood, S. Recuenco, M. Ducey, R. B. Chipman, and M. Palace. 2017. Modeling raccoon (Procyon lotor) habitat connectivity to identify potential corridors for rabies spread. Tropical Medicine and Infectious Diseases 44. doi:10.3390/tropicalmed203044 [Details] [Full Publication]

Rode, K. D., R. R. Wilson, D. C. Douglas, V. L. Muhlenbruch, T. C. Atwood, E. V. Regehr, E. S. Richardson, N. W. Pilfold, A. E. Derocher, G. M. Durner, I. Stirling, S. C. Amstrup, M. St. Martin, A. M. Pagano, and K. S. Simac. 2017. Spring fasting behavior in a marine apex predator provides an index of ecosystem productivity. Global Change Biology In Press. doi:10.1111/gcb.13933 [Details] [Full Publication]

Neuman-Lee, L. A., P. A. Terletzky, T. C. Atwood, E. M. Gese, G. D. Smith, S. Greenfield, J. Pettit, and S. S. French. 2017. Demographic and temporal variations in immunity and condition of polar bears (Ursus maritimus) from the southern Beaufort Sea. Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 327(5):333-346. doi:10.1002/jez.2112 [Details] [Full Publication]

Atwood, T. C., C. Duncan, K. A. Patyk, P. Nol, J. Rhyan, M. McCollum, M. A. McKinney, A. M. Ramey, O. H. Kwok, S. Henniger, and J. P. Dubey. 2017. Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants. Scientific Reports 7, Article number: 13193. doi:10.1038/s41598-017-13496-9 [Details] [Full Publication]

Atwood, T. C., B. G. Marcot, D. C. Douglas, S. C. Amstrup, K. D. Rode, G. M. Durner, and J. F. Bromaghin. 2016. Forecasting the relative influence of environmental and anthropogenic stressors on polar bears. Ecosphere 7(6):e01370. doi:10.1002/ecs2.1370 [Details] [Full Publication]

Atwood, T. C., E. Peacock, M. A. McKinney, K. Lillie, R. R. Wilson, D. C. Douglas, S. Miller, and P. A. Terletzky. 2016. Rapid environmental change drives increased land use by an Arctic marine predator. PLoS One 11(6):e0155932. doi:10.1371/journal.pone.0155932 [Details] [Full Publication] [Pub Brief]

Regehr, E. V., K. L. Laidre, H. R. Akçakaya, S. C. Amstrup, T. C. Atwood, N. J. Lunn, M. E. Obbard, H. Stern, G. W. Thiemann, and Ø. Wiig. 2016. Conservation status of polar bears (Ursus maritimus) in relation to projected sea-ice declines. Biology Letters 12:0160556. doi:10.1098/rsbl.2016.0556 [Details] [Full Publication]

Atwood, T. C., E. Peacock, K. Burek-Huntington, V. Shearn-Bochsler, B. Bodenstein, K. Beckmen, and G. M. Durner. 2015. Prevalence and spatio-temporal variation of an Alopecia Syndrome in polar bears of the Southern Beaufort Sea. Journal of Wildlife Diseases 51(1):48-59. doi:10.7589/2013-11-301 [Details] [Full Publication]

Bromaghin, J. F., T. L. McDonald, I. Stirling, A. E. Derocher, E. S. Richardson, E. V. Regehr, D. C. Douglas, G. M. Durner, T. C. Atwood, and S. C. Amstrup. 2015. Polar bear population dynamics in the southern Beaufort Sea during a period of sea ice decline. Ecological Applications 25(3):634-651. doi:10.1890/14-1129.1 [Details] [Full Publication]

Atwood, T. C., B. G. Marcot, D. C. Douglas, S. C. Amstrup, K. D. Rode, G. M. Durner, and J. F. Bromaghin. 2015. Evaluating and ranking threats to the long-term persistence of polar bears. USGS Open-File Report 2014-1254, 114 p. doi:10.3133/ofr20141254 [Details] [Full Publication]

Patyk, K. A., C. Duncan, P. Nol, C. Sonne, K. L. Laidre, M. E. Obbard, Ø. Wiig, J. Aars, E. V. Regehr, L. L. Gustafson, and T. C. Atwood. 2015. Establishing a definition of polar bear health to guide research and management activities. Science of the Total Environment 514:371-378. doi:10.1016/j.scitotenv.2015.02.007 [Details] [Full Publication]

Beasley, J. C., T. C. Atwood, M. E. Byrne, K. C. VerCauteren, S. R. Johnson, and O. E. Rhodes, Jr. 2015. A behaviorally-explicit approach for evaluating vaccine baits to mesopredators to control epizootics in fragmented landscapes. PLoS One 10:e0113206. doi:10.1371/journal.pone.0113206 [Details] [Full Publication]

Fagre, A., K. A. Patyk, P. Nol, T. C. Atwood, K. Hueffer, and C. Duncan. 2015. A review of infectious agents in polar bears (Ursus maritimus) and their long-term ecological relevance. EcoHealth:1-12. doi:10.1007/s10393-015-1023-6 [Details] [Full Publication]

Bowen, L., A. K. Miles, S. Waters, R. Meyerson, K. D. Rode, and T. C. Atwood. 2015. Gene transcription in polar bears (Ursus maritimus) from disparate populations. Polar Biology 38(9):1413-1427. doi:10.1007/s00300-015-1705-0 [Details] [Full Publication]

Bowen, L., A. K. Miles, J. L. Stott, S. Waters, and T. C. Atwood. 2015. Enhanced biological processes associated with alopecia in polar bears (Ursus maritimus). Science of the Total Environment 529:114-120. doi:10.1016/j.scitotenv.2015.05.039 [Details] [Full Publication]

Oakley, K. L., T. C. Atwood, D. C. Douglas, K. D. Rode, and M. E. Whalen. 2015. Changing Arctic Ecosystems - Updated forecast: Reducing carbon dioxide (CO2) emissions required to improve polar bear outlook. USGS Fact Sheet 2015-3042, 2 p. doi:10.3133/fs20153042 [Details] [Full Publication]

Van Hemert, C. R., P. L. Flint, M. S. Udevitz, J. C. Koch, T. C. Atwood, K. L. Oakley, and J. M. Pearce. 2015. Forecasting wildlife response to rapid warming in the Alaskan Arctic. BioScience 65(7):718-728. doi:10.1093/biosci/biv069 [Details] [Full Publication]

LaRue, M., S. P. Stapleton, C. Porter, S. N. Atkinson, T. C. Atwood, and N. Lecomte. 2015. Testing methods for using high-resolution satellite imagery to monitor polar bear abundance and distribution. Wildlife Society Bulletin 39(4):772-779. doi:10.1002/wsb.596 [Details] [Full Publication]

Atwood, T. C., E. Peacock, K. Lillie, R. R. Wilson, and S. Miller. 2015. Demographic composition and behavior of polar bears summering on shore in Alaska. USGS Administrative Report, 26 p. [Details] [Full Publication]

McKinney, M. A., T. C. Atwood, R. Dietz, C. Sonne, S. J. Iverson, and E. Peacock. 2014. Validation of adipose lipid content as a body condition index for polar bears. Ecology and Evolution 4(4):516-527. doi:10.1002/ece3.956 [Details] [Full Publication]

Rode, K. D., A. M. Pagano, J. F. Bromaghin, T. C. Atwood, G. M. Durner, K. S. Simac, and S. C. Amstrup. 2014. Effects of capturing and collaring on polar bears: Findings from long-term research on the southern Beaufort population. Wildlife Research 41(4):311-322. doi:10.1071/WR13225 [Details] [Full Publication]

Stapleton, S. P., M. LaRue, N. Lecomte, S. N. Atkinson, D. L. Garshelis, C. Porter, and T. C. Atwood. 2014. Polar bears from space: assessing satellite imagery as a tool to track Arctic wildlife. PLoS One 9(7):e101513. doi:10.1371/journal.pone.0101513 [Details] [Full Publication]

Anderson, A., S. A. Shwiff, R. B. Chipman, T. C. Atwood, T. Cozzens, F. Fillo, R. Hale, B. Hatch, J. Maki, O. E. Rhodes, Jr, E. E. Rees, C. E. Rupprecht, R. Tinline, K. C. VerCauteren, and D. Slate. 2014. Forecasting the spread of raccoon rabies using a purpose-specific group decision-making process. Human-Wildlife Interactions 8(1):130-138. [Details] [Full Publication]

Slate, D., R. B. Chipman, T. P. Algeo, S. A. Mills, K. M. Nelson, C. K. Croson, E. J. Dubovi, R. W. Renshaw, K. C. VerCauteren, T. C. Atwood, S. Johnson, and C. E. Rupprecht. 2014. Safety and immunogenicity in the first field trial with ONRAB in raccoons in the United States. Journal of Wildlife Diseases 50(3):582-595. doi:10.7589/2013-08-207 [Details] [Full Publication]

Kunkel, K. E., T. K. Ruth, T. C. Atwood, D. H. Pletscher, and M. G. Hornocker. 2013. Assessing the value of wolves and cougars as conservation surrogates by linking carnivore hunting success with landscape characteristics. Animal Conservation 16:32-40. doi:10.1111/j.1469-1795.2012.00568.x [Details] [Full Publication]

Oakley, K. L., M. E. Whalen, D. C. Douglas, M. S. Udevitz, T. C. Atwood, and C. V. Jay. 2012. Changing Arctic Ecosystems - Polar bear and walrus response to the rapid decline in Arctic sea ice. USGS Fact Sheet 2012-3131, 4 p. [Details] [Full Publication]

Beasley, J. D., W. S. Beatty, T. C. Atwood, S. Johnson, and O. E. Rhodes, Jr. 2012. A comparison of methods for estimating raccoon abundance: Implications for disease vaccination programs. Journal of Wildlife Management 76(6):1290-1297. doi:10.1002/jwmg.379 [Details] [Full Publication]

Atwood, T. C. and S. W. Breck. 2012. Carnivores, Conflict, and Conservation: Defining the Landscape of Conflict. Pages 99-118 in F. I. Álvares and G. E. Mata, (eds.). Carnivores: Species, Conservation, and Management. Nova Publishers [Details] [Full Publication]

Atwood, T. C., T. L. Fry, and B. R. Leland. 2011. Partitioning of a limited resource by sympatric carnivores in the Chihuahuan Desert and the implications for disease transmission. Journal of Wildlife Management 75:1609-1615. [Details]

Atwood, T. C., J. K. Young, J. P. Beckmann, S. W. Breck, O. E. Rhodes, Jr, J. A. Fike, and K. D. Bristow. 2011. Modeling connectivity of black bears in a desert sky island archipelago. Biological Conservation 144(12):2851-2862. doi:10.1016/j.biocon.2011.08.002 [Details] [Full Publication]

Fry, T. L., T. C. Atwood, and M. R. Dunbar. 2010. Utility of rhodamine B as a biomarker in raccoons. Human-Wildlife Interactions 4:275-282. [Details]

Atwood, T. C. and E. M. Gese. 2010. Importance of resource selection and social behaviour to partitioning of hostile space by sympatric canids. Journal of Mammalogy 91:490-499. [Details]

Atwood, T. C., T. J. DeLiberto, H. J. Smith, J. Stevenson, and K. C. VerCauteren. 2009. Raccoon spatial ecology related to cattle and bovine tuberculosis. Journal of Wildlife Management 73:647-654. [Details]

Atwood, T. C., E. M. Gese, and K. E. Kunkel. 2009. Spatial decomposition of predation risk in a multiple-predator multiple-prey system. Journal of Wildlife Management 73:876-884. [Details]

Atwood, T. C. and E. M. Gese. 2008. Coyotes (Canis latrans) and recolonizing wolves (Canis lupus): Social rank mediates risk-conditional behaviour at ungulate carcasses. Animal Behaviour 75:753-762. [Details]

VerCauteren, K. C., T. C. Atwood, T. J. DeLiberto, H. J. Smith, J. Stevenson, T. Gidlewski, and B. V. Thomsen. 2008. Sentinel-based surveillance of coyotes to detect bovine tuberculosis in Michigan. Emerging Infectious Diseases 14:1862-1869. [Details]

Atwood, T. C., K. C. VerCauteren, T. J. DeLiberto, H. J. Smith, and J. Stevenson. 2007. Coyotes as a potential sentinel species to detect bovine tuberculosis (Mycobacterium bovis) infection in white-tailed deer in Michigan. Journal of Wildlife Management 71:1545-1554. [Details]

Atwood, T. C., E. M. Gese, and K. E. Kunkel. 2007. Comparative patterns of predation by cougars and recolonizing wolves. Journal of Wildlife Management 71:1098-1106. [Details]

Atwood, T. C. 2006. The influence of habitat patch attributes on coyote group size and interaction in a fragmented landscape. Canadian Journal of Zoology 84:80-87. [Details]

Atwood, T. C. 2006. Behavioral interactions between wolves, Canis lupus, and coyotes, Canis latrans, at ungulate carcasses in southwest Montana. Western North American Naturalist 66:390-394. [Details]

Atwood, T. C., H. P. Weeks, Jr., and T. M. Gehring. 2004. Spatial ecology of coyotes along a suburban-to-rural gradient. Journal of Wildlife Management 85:1000-1009. [Details]

Atwood, T. C. and H. P. Weeks, Jr.. 2003. Spatial home-range overlap and temporal interaction in eastern coyotes: The influence of pair types and fragmentation. Canadian Journal of Zoology 81:1589-1598. [Details]

Swihart, R. K., T. C. Atwood, J. R. Goheen, D. A. Scheiman, K. E. Munroe, and T. M. Gehring. 2003. Patch occupancy in North American mammals: Is patchiness in the eye of the beholder? . Journal of Biogeography 30:1259-1279. [Details]

Atwood, T. C. and H. P. Weeks, Jr.. 2003. Sex-specific patterns of mineral lick preference in white-tailed deer. Northeastern Naturalist 10:409-414. [Details]

Atwood, T. C. and H. P. Weeks, Jr.. 2002. Sex- and age-specific patterns of mineral lick use by white-tailed deer. American Midland Naturalist 148:289-296. [Details]

Atwood, T. C. and H. P. Weeks, Jr.. 2002. Facultative dyad formation in adult male coyotes. Northeastern Naturalist 9:353-358. [Details]

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