Heather Johnson, Ph.D.
Population ecology, resource selection, human-wildlife conflicts, predator-prey relationships, endangered species conservation, large mammal ecology and management, effects of land-use change on wildlife populations.
Professional Experience
2017 - Present Research Wildlife Biologist, USGS, Alaska Science Center, Anchorage, AK
2010 - 2017 Wildlife Researcher, Colorado Parks and Wildlife, Durango, CO
2010 Post-doctoral Researcher, University of Montana, Missoula, MT
2005 - 2010 Graduate Research Assistant, University of Montana, Missoula, MT
2004 - 2005 Contract Wildlife Biologist, California Department of Fish and Game, Bishop, CA
2001 - 2003 Graduate Research Assistant, University of Arizona, Tucson, AZ
1999 - 2001 Various field technician positions
Education and Certifications
Ph.D. 2010 University of Montana, Missoula, MT Wildlife Biology
M.S. 2003 University of Arizona, Tucson, AZ Wildlife Science
B.S. 1999 University of California, San Diego, CA Biology
Affiliations and Memberships*
The Wildlife Society
Society for Conservation Biology
Honors and Awards
Early Career Excellence in Leadership Award (2021)
USDA/APHIS/WS/National Wildlife Research Center - Outstanding Research Publication (2015)
Graduate Research Award, Wildlife Ecology Program, University of Montana (2010)
PEO Scholar, University of Montana (2009)
Canon National Parks Science Scholar (2007)
Best Thesis Award, School of Renewable Natural Resources, University of Arizona (2003)
Science and Products
Filter Total Items: 33
Spring phenology drives range shifts in a migratory Arctic ungulate with key implications for the future Spring phenology drives range shifts in a migratory Arctic ungulate with key implications for the future
Annual variation in phenology can have profound effects on the behavior of animals. As climate change advances spring phenology in ecosystems around the globe, it is becoming increasingly important to understand how animals respond to variation in the timing of seasonal events and how their responses may shift in the future. We investigated the influence of spring phenology on the...
Authors
John Severson, Heather Johnson, Stephen Arthur, William Leacock, Michael Suitor
Individual and population fitness consequences associated with large carnivore use of residential development Individual and population fitness consequences associated with large carnivore use of residential development
Large carnivores are negotiating increasingly developed landscapes, but little is known about how such behavioral plasticity influences their demographic rates and population trends. Some investigators have suggested that the ability of carnivores to behaviorally adapt to human development will enable their persistence, and yet, others have suggested that such landscapes are likely to...
Authors
Heather Johnson, David Bruce Lewis, Stewart Breck
Caribou use of habitat near energy development in Arctic Alaska Caribou use of habitat near energy development in Arctic Alaska
Increasing demands for energy have generated interest in expanding oil and gas production on the North Slope of Alaska, raising questions about the resilience of barren-ground caribou populations to new development. Although the amount of habitat lost directly to energy development in the Arctic will likely be relatively small, there are significant concerns about habitat that may be...
Authors
Heather Johnson, Trevor Golden, Layne G. Adams, David Gustine, Elizabeth Lenart
Roosting habitat use by sandhill cranes and waterfowl on the North and South Platte Rivers in Nebraska Roosting habitat use by sandhill cranes and waterfowl on the North and South Platte Rivers in Nebraska
Migration ecology and habitat use of spring migrating birds using the Central Platte River is a well-explored topic, yet less is known about use of the North and South Platte rivers (NSPR) in western Nebraska. The efficiency and effectiveness of conservation efforts in the NSPR could be greatly improved with access to information about where and when birds roost and landscape...
Authors
Dana Varner, Aaron Pearse, Andrew Bishop, Jonas Davis, John Denton, Roger Grosse, Heather M. Johnson, Emily Munter, Kirk Schroeder, Robert Spangler, Mark Vrtiska, Angelina Wright
A collaborative approach to bridging the gap between wildlife managers and researchers A collaborative approach to bridging the gap between wildlife managers and researchers
Although most wildlife professionals agree that science should inform wildlife management decisions, disconnect still exists between researchers and managers. If researchers are not striving to incorporate their findings into management decisions, support for research programs by managers can wane. If managers are not using research findings to inform management decisions, those...
Authors
Jerod Merkle, Neil Anderson, Danna L. Baxley, Matthew Chopp, Laura C. Gigliotti, Justin A. Gude, Tyler Harms, Heather Johnson, Evelyn Merrill, Michael Mitchell, Tony Mong, Jerry Nelson, Andrew Norton, Michael Sheriff, Eric Tomasik, Kelly VanBeek
NDVI exhibits mixed success in predicting spatiotemporal variation in caribou summer forage quality and quantity NDVI exhibits mixed success in predicting spatiotemporal variation in caribou summer forage quality and quantity
The satellite‐derived Normalized Difference Vegetation Index (NDVI) is commonly used by researchers and managers to represent ungulate forage conditions in landscapes across the globe, despite limited information about how it compares to empirical measurements of forage quality and quantity. The application of NDVI as a forage metric is particularly appealing for studying migratory...
Authors
Heather Johnson, David D. Gustine, Trevor Golden, Layne Adams, Lincoln Parrett, Elizabeth Lenart, Perry Barboza
Factors influencing elk recruitment across ecotypes in the Western United States Factors influencing elk recruitment across ecotypes in the Western United States
Ungulates are key components in ecosystems and economically important for sport and subsistence harvest. Yet the relative importance of the effects of weather conditions, forage productivity, and carnivores on ungulates are not well understood. We examined changes in elk (Cervus canadensis) recruitment (indexed as age ratios) across 7 states and 3 ecotypes in the northwestern United...
Authors
Paul Lukacs, Michael Mitchell, Mark Hebblewhite, Bruce Johnson, Heather Johnson, Matthew J. Kauffman, Kelly Proffitt, Peter Zager, Jedediah Brodie, Kent Hersey, A. Holland, Mark Hurley, Scott McCorquodale, Arthur Middleton, Matthew Nordhagen, J. Nowak, Daniel Walsh, P.J. White
Summary of wildlife-related research on the coastal plain of the Arctic National Wildlife Refuge, Alaska, 2002–17 Summary of wildlife-related research on the coastal plain of the Arctic National Wildlife Refuge, Alaska, 2002–17
We summarize recent (2002–17) publicly available information from studies within the 1002 Area of the Arctic National Wildlife Refuge as well as terrestrial and coastal ecosystems elsewhere on the Arctic Coastal Plain that are relevant to the 1002 Area. This report provides an update on earlier research summaries on caribou (Rangifer tarandus), forage quality and quantity, polar bears...
Authors
John Pearce, Paul Flint, Todd Atwood, David Douglas, Layne G. Adams, Heather Johnson, Stephen Arthur, Christopher Latty
Detection of microcystin and other cyanotoxins in lakes at Isle Royale National Park, Pictured Rocks National Lakeshore, and Sleeping Bear Dunes National Lakeshore, northern Michigan, 2012–13 Detection of microcystin and other cyanotoxins in lakes at Isle Royale National Park, Pictured Rocks National Lakeshore, and Sleeping Bear Dunes National Lakeshore, northern Michigan, 2012–13
Although cyanotoxins released during algal blooms have become an increasing concern in surface waters across the United States, the presence of cyanotoxins in northern Michigan lakes had not been evaluated in detail. The U.S. Geological Survey and National Park Service (NPS) led a 2-year study (2012 and 2013) to determine the presence of microcystin and other algal toxins in several...
Authors
Lori Fuller, Angela K. Brennan, Lisa Fogarty, Keith Loftin, Heather E. Johnson, David VanderMeulen, Brenda Lafrancois
Influence of precipitation and crop germination on resource selection by mule deer (Odocoileus hemionus) in southwest Colorado Influence of precipitation and crop germination on resource selection by mule deer (Odocoileus hemionus) in southwest Colorado
Mule deer (Odocoileus hemionus) populations in the western United States provide many benefits to local economies but can also cause considerable damage to agriculture, particularly damage to lucrative crops. Limited information exists to understand resource selection of mule deer in response to annual variation in crop rotation and climatic conditions. We tested the hypothesis that mule...
Authors
Emily Carrollo, Heather Johnson, Justin Fischer, Matthew Hammond, Patricia Dorsey, Charles Anderson, Kurt Vercauteren, W. Walter
Contamination with bacterial zoonotic pathogen genes in U.S. streams influenced by varying types of animal agriculture Contamination with bacterial zoonotic pathogen genes in U.S. streams influenced by varying types of animal agriculture
Animal waste, stream water, and streambed sediment from 19 small (
Authors
Sheridan Haack, Joseph W. Duris, Dana Kolpin, Michael Focazio, Michael Meyer, Heather E. Johnson, Ryan Oster, William T. Foreman
Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) at ambient freshwater beaches Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) at ambient freshwater beaches
Methicillin-resistant Staphylococcus aureus (MRSA) are a threat to human health worldwide, and although detected at marine beaches, they have been largely unstudied at freshwater beaches. Genes indicating S. aureus (SA; femA) and methicillin resistance (mecA) were detected at 11 and 12 of 13 US Great Lakes beaches and in 18% or 27% of 287 recreational water samples, respectively. Eight...
Authors
Lisa Fogarty, Sheridan Haack, Heather E. Johnson, Angela K. Brennan, Natasha Isaacs, Chelsea Spencer
Non-USGS Publications**
Kirby, R., H.E. Johnson, M.W. Alldredge, and J.N. Pauli. 2019. The cascading effects of human food on hibernation and cellular aging in free-ranging black bears. Scientific Reports 9:2197. doi:10.1038/s41598-019-38937-5.
Lischka, S. A., T. L. Teel, H. E. Johnson, K. R. Crooks. 2019. Understanding and managing human tolerance for a large carnivore in a residential system. Biological Conservation 238. doi:10.1016/j.biocon.2019.07.034.
Wilbur, R. C., S. A. Lischka, J. R. Young, and H. E. Johnson. 2018. Experience, attitudes, and demographic factors influence the probability of reporting human-black bear interactions. Wildlife Society Bulletin 42(1):22-31. doi:10.1002/wsb.854.
Lukacs, P. M., M. S. Mitchell, M. Hebblewhite, B. K. Johnson, H. E. Johnson, M. Kauffman, K. M. Proffitt, P. Zager, J. Brodie, K. Hersey, A. Holland, M. Hurley, S. McCorquodale, A. Middleton, J. Nowak, D. P. Walsh, and P. J. White. 2018. Factors influencing elk recruitment across ecotypes in the western United States. Journal of Wildlife Management 82(4):698-710. doi:10.1002/jwmg.21438 https://doi.org/10.1002/jwmg.21438.
Johnson, H. E., D. L. Lewis, S. A. Lischka, and S. W. Breck. 2018. Assessing ecological and social outcomes of a bear-proofing experiment. Journal of Wildlife Management 82(6):1102-1114. doi:10.1002/jwmg.21472.
Laufenburg, J. S., H. E. Johnson, P. F. Doherty, Jr, and S. W. Breck. 2018. Compounding effects of human development and a natural food shortage on a black bear population along a human development-wildland interface. Biological Conservation 224:188-198. doi:10.1016/j.biocon.2018.05.004.
Lischka, S. A., T. L. Teel, H. E. Johnson, S. E. Reed, S. W. Breck, A. W. Don Carlos, and K. R. Crooks. 2018. A conceptual model for the integration of social and ecological information to understand human-wildlife interactions. Biological Conservation 225:80-87. doi:10.1016/j.biocon.2018.06.020.
Johnson, H. E., D. L. Lewis, T. L. Verzuh, C. F. Wallace, R. M. Much, L. K. Willmarth, and S. W. Breck. 2017. Human development and climate affect hibernation in a large carnivore with implications for human-carnivore conflicts. Journal of Applied Ecology 55(2):663-672. doi:10.1111/1365-2664.13021.
Johnson, H. E., J. R. Sushinsky, A. Holland, E. J. Bergman, T. Balzer, J. Garner, and S. E. Reed. 2016. Increases in residential and energy development are associated with reductions in recruitment for a large ungulate. Global Change Biology 23(2):578-591. doi:10.1111/gcb.13385.
Wolfe, L. L., H. E. Johnson, M. C. Fisher, W. R. Lance, D. K. Smith, and M. W. Miller. 2016. Chemical immobilization in American black bears using a combination of nalbuphine, medetomidine, and azaperone. Ursus 27(1):1-4. doi:10.2192/URSUS-D-15-00018.1.
Johnson, H. E., S. W. Breck, S. Baruch-Mordo, D. L. Lewis, C. W. Lackey, K. R. Wilson, J. Broderick, J. S. Mao, and J. P. Beckmann. 2015. Shifting perceptions of risk and reward: dynamic selection for human development by black bears in the western United States. Biological Conservation 187:164-172. doi:10.1016/j.biocon.2015.04.014.
Wolfe, L. L., H. E. Johnson, M. C. Fisher, M. A. Sirochman, B. Kraft, and M. W. Miller. 2014. Evaluation of an acepromazine and medetomidine combination (AcMe) for immobilization of Rocky Mountain elk and black bears. Journal of Wildlife Diseases 50(4):979-981. doi:10.7589/2014-02-052.
Johnson, H. E., J. W. Fischer, M. Hammond, P. D. Dorsey, W. D. Walter, C. Anderson, and K. C. VerCauteren. 2014. Evaluation of techniques to reduce deer and elk damage to agricultural resources. Wildlife Society Bulletin 38(2):358-365. doi: 10.1002/wsb.408.
Brodie, J., H. E. Johnson, M. Mitchell, P. Zager, K. M. Proffitt, M. Hebblewhite, M. Kauffman, B. A. Johnson, J. A. Bissonette, C. Bishop, J. Gude, K. Hersey, M. Hurley, P. M. Lukacs, S. McCorquodale, E. McIntire, J. Nowak, H. Sawyer, D. K. Smith, and P. J. White. 2013. Relative influence of human harvest, carnivores, and weather on adult female elk survival across western North America. Journal of Applied Ecology 50(2):295-305. doi:10.1111/1365-2664.12044.
Johnson, H. E., M. Hebblewhite, T. R. Stephenson, D. W. German, B. M. Pierce, and V. C. Bleich. 2013. Evaluating apparent competition in limiting the recovery of an endangered ungulate. Oecologia 171(1):295-307. doi:10.1007/s00442-012-2397-6.
Johnson, H. E., L. S. Mills, J. D. Wehausen, T. R. Stephenson, and G. Luikart. 2011. Translating effects of inbreeding depression on component vital rates to overall population growth in endangered bighorn sheep. Conservation Biology 25(6):1240-1249. doi:10.1111/j.1523-1739.2011.01739.x.
Cahn, M. L., M. M. Conner, O. J. Schmitz, T. R. Stephenson, J. D. Wehausen, and H. E. Johnson. 2011. Disease, population viability, and recovery of endangered Sierra Nevada bighorn sheep. Journal of Wildlife Management 75(8):1753-1766. doi:10.1002/jwmg.232.
Johnson, H. E., L. S. Mills, T. R. Stephenson, and J. D. Wehausen. 2010. Population-specific vital rate contributions influence management of an endangered ungulate. Ecological Applications 20(6):1753-765. doi:10.1890/09-1107.1.
Johnson, H. E., L. S. Mills, J. D. Wehausen, and T. R. Stephenson. 2010. Combining ground count, telemetry, and mark–resight data to infer population dynamics in an endangered species. Journal of Applied Ecology 47(5):1083-1093. doi:10.1111/j.1365-2664.2010.01846.x.
Bleich, V. C., H. E. Johnson, S. A. Holl, L. Konde, S. G. Torres, and P. R. Krausman. 2008. Fire history in a chaparral ecosystem: implications for conservation of a native ungulate. Rangeland Ecology and Management 61(6):571-579. doi:10.2111/07-016.1.
Johnson, H. E., V. C. Bleich, P. R. Krausman, and J. L. Koprowski. 2007. Effects of antler breakage on mating behavior in male tule elk (Cervus elaphus nannodes). European Journal of Wildlife Research 53(1):9-15. doi:10.1007/s10344-006-0060-4.
Johnson, H. E., V. C. Bleich, and P. R. Krausman. 2005. Antler breakage in tule elk, Owens Valley. Journal of Wildlife Management 69(4):1747-1752. doi:10.2193/0022-541X(2005)69[1747:ABITEO]2.0.CO;2.
Cain, J. W., III, H. E. Johnson, and P. R. Krausman. 2005. Wildfire and desert bighorn sheep habitat. Southwestern Naturalist 50(4):506-513. doi:10.1894/0038-4909(2005)050[0506:WADBSH]2.0.CO;2.
Johnson, H. E., S. A. Lischka, J. Broderick, J. Apker, S. W. Breck, J. P. Beckmann, K. R. Wilson, and P. D. Dorsey. 2016. Black bear exploitation of urban environments: finding management solutions and assessing regional population effects. Colorado Division of Parks and Wildlife Federal Aid Project No. W-204-R4, 21 p.
Johnson, H. E., P. D. Dorsey, M. Hammond, C. M. Bishop, K. C. VerCauteren, and C. Anderson, and D. Walter. 2013. Evaluating solutions to reduce elk and deer damage on agricultural resources. Colorado Division of Parks and Wildlife, Federal Aid Wildlife Research Report.
Mills, L. S. and H. E. Johnson. 2013. Wildlife population dynamics. Pages 84-111 in P. R. Krausman, and J. W. Cain III, editors. Wildlife management and conservation: contemporary principles and practices. Johns Hopkins University Press.
Johnson, H. E. 2010. Escaping the extinction vortex: identifying factors affecting population performance and recovery in endangered Sierra Nevada bighorn sheep. Dissertation, University of Montana, Missoula, MT, 243 p.
Johnson, H. E. 2006. Effects of translocations on Sierra Nevada bighorn sheep population viability. California Department of Fish and Game Technical Report, Bishop, CA.
Johnson, H. E., V. C. Bleich, and T. R. Stephenson. 2005. Habitat selection by mountain sheep and mule deer: understanding ecosystem health from the desert to the alpine. California Dept. of Fish and Game, University of California Davis Wildlife Health Center Resource Assessment Program. Final Report.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 33
Spring phenology drives range shifts in a migratory Arctic ungulate with key implications for the future Spring phenology drives range shifts in a migratory Arctic ungulate with key implications for the future
Annual variation in phenology can have profound effects on the behavior of animals. As climate change advances spring phenology in ecosystems around the globe, it is becoming increasingly important to understand how animals respond to variation in the timing of seasonal events and how their responses may shift in the future. We investigated the influence of spring phenology on the...
Authors
John Severson, Heather Johnson, Stephen Arthur, William Leacock, Michael Suitor
Individual and population fitness consequences associated with large carnivore use of residential development Individual and population fitness consequences associated with large carnivore use of residential development
Large carnivores are negotiating increasingly developed landscapes, but little is known about how such behavioral plasticity influences their demographic rates and population trends. Some investigators have suggested that the ability of carnivores to behaviorally adapt to human development will enable their persistence, and yet, others have suggested that such landscapes are likely to...
Authors
Heather Johnson, David Bruce Lewis, Stewart Breck
Caribou use of habitat near energy development in Arctic Alaska Caribou use of habitat near energy development in Arctic Alaska
Increasing demands for energy have generated interest in expanding oil and gas production on the North Slope of Alaska, raising questions about the resilience of barren-ground caribou populations to new development. Although the amount of habitat lost directly to energy development in the Arctic will likely be relatively small, there are significant concerns about habitat that may be...
Authors
Heather Johnson, Trevor Golden, Layne G. Adams, David Gustine, Elizabeth Lenart
Roosting habitat use by sandhill cranes and waterfowl on the North and South Platte Rivers in Nebraska Roosting habitat use by sandhill cranes and waterfowl on the North and South Platte Rivers in Nebraska
Migration ecology and habitat use of spring migrating birds using the Central Platte River is a well-explored topic, yet less is known about use of the North and South Platte rivers (NSPR) in western Nebraska. The efficiency and effectiveness of conservation efforts in the NSPR could be greatly improved with access to information about where and when birds roost and landscape...
Authors
Dana Varner, Aaron Pearse, Andrew Bishop, Jonas Davis, John Denton, Roger Grosse, Heather M. Johnson, Emily Munter, Kirk Schroeder, Robert Spangler, Mark Vrtiska, Angelina Wright
A collaborative approach to bridging the gap between wildlife managers and researchers A collaborative approach to bridging the gap between wildlife managers and researchers
Although most wildlife professionals agree that science should inform wildlife management decisions, disconnect still exists between researchers and managers. If researchers are not striving to incorporate their findings into management decisions, support for research programs by managers can wane. If managers are not using research findings to inform management decisions, those...
Authors
Jerod Merkle, Neil Anderson, Danna L. Baxley, Matthew Chopp, Laura C. Gigliotti, Justin A. Gude, Tyler Harms, Heather Johnson, Evelyn Merrill, Michael Mitchell, Tony Mong, Jerry Nelson, Andrew Norton, Michael Sheriff, Eric Tomasik, Kelly VanBeek
NDVI exhibits mixed success in predicting spatiotemporal variation in caribou summer forage quality and quantity NDVI exhibits mixed success in predicting spatiotemporal variation in caribou summer forage quality and quantity
The satellite‐derived Normalized Difference Vegetation Index (NDVI) is commonly used by researchers and managers to represent ungulate forage conditions in landscapes across the globe, despite limited information about how it compares to empirical measurements of forage quality and quantity. The application of NDVI as a forage metric is particularly appealing for studying migratory...
Authors
Heather Johnson, David D. Gustine, Trevor Golden, Layne Adams, Lincoln Parrett, Elizabeth Lenart, Perry Barboza
Factors influencing elk recruitment across ecotypes in the Western United States Factors influencing elk recruitment across ecotypes in the Western United States
Ungulates are key components in ecosystems and economically important for sport and subsistence harvest. Yet the relative importance of the effects of weather conditions, forage productivity, and carnivores on ungulates are not well understood. We examined changes in elk (Cervus canadensis) recruitment (indexed as age ratios) across 7 states and 3 ecotypes in the northwestern United...
Authors
Paul Lukacs, Michael Mitchell, Mark Hebblewhite, Bruce Johnson, Heather Johnson, Matthew J. Kauffman, Kelly Proffitt, Peter Zager, Jedediah Brodie, Kent Hersey, A. Holland, Mark Hurley, Scott McCorquodale, Arthur Middleton, Matthew Nordhagen, J. Nowak, Daniel Walsh, P.J. White
Summary of wildlife-related research on the coastal plain of the Arctic National Wildlife Refuge, Alaska, 2002–17 Summary of wildlife-related research on the coastal plain of the Arctic National Wildlife Refuge, Alaska, 2002–17
We summarize recent (2002–17) publicly available information from studies within the 1002 Area of the Arctic National Wildlife Refuge as well as terrestrial and coastal ecosystems elsewhere on the Arctic Coastal Plain that are relevant to the 1002 Area. This report provides an update on earlier research summaries on caribou (Rangifer tarandus), forage quality and quantity, polar bears...
Authors
John Pearce, Paul Flint, Todd Atwood, David Douglas, Layne G. Adams, Heather Johnson, Stephen Arthur, Christopher Latty
Detection of microcystin and other cyanotoxins in lakes at Isle Royale National Park, Pictured Rocks National Lakeshore, and Sleeping Bear Dunes National Lakeshore, northern Michigan, 2012–13 Detection of microcystin and other cyanotoxins in lakes at Isle Royale National Park, Pictured Rocks National Lakeshore, and Sleeping Bear Dunes National Lakeshore, northern Michigan, 2012–13
Although cyanotoxins released during algal blooms have become an increasing concern in surface waters across the United States, the presence of cyanotoxins in northern Michigan lakes had not been evaluated in detail. The U.S. Geological Survey and National Park Service (NPS) led a 2-year study (2012 and 2013) to determine the presence of microcystin and other algal toxins in several...
Authors
Lori Fuller, Angela K. Brennan, Lisa Fogarty, Keith Loftin, Heather E. Johnson, David VanderMeulen, Brenda Lafrancois
Influence of precipitation and crop germination on resource selection by mule deer (Odocoileus hemionus) in southwest Colorado Influence of precipitation and crop germination on resource selection by mule deer (Odocoileus hemionus) in southwest Colorado
Mule deer (Odocoileus hemionus) populations in the western United States provide many benefits to local economies but can also cause considerable damage to agriculture, particularly damage to lucrative crops. Limited information exists to understand resource selection of mule deer in response to annual variation in crop rotation and climatic conditions. We tested the hypothesis that mule...
Authors
Emily Carrollo, Heather Johnson, Justin Fischer, Matthew Hammond, Patricia Dorsey, Charles Anderson, Kurt Vercauteren, W. Walter
Contamination with bacterial zoonotic pathogen genes in U.S. streams influenced by varying types of animal agriculture Contamination with bacterial zoonotic pathogen genes in U.S. streams influenced by varying types of animal agriculture
Animal waste, stream water, and streambed sediment from 19 small (
Authors
Sheridan Haack, Joseph W. Duris, Dana Kolpin, Michael Focazio, Michael Meyer, Heather E. Johnson, Ryan Oster, William T. Foreman
Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) at ambient freshwater beaches Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) at ambient freshwater beaches
Methicillin-resistant Staphylococcus aureus (MRSA) are a threat to human health worldwide, and although detected at marine beaches, they have been largely unstudied at freshwater beaches. Genes indicating S. aureus (SA; femA) and methicillin resistance (mecA) were detected at 11 and 12 of 13 US Great Lakes beaches and in 18% or 27% of 287 recreational water samples, respectively. Eight...
Authors
Lisa Fogarty, Sheridan Haack, Heather E. Johnson, Angela K. Brennan, Natasha Isaacs, Chelsea Spencer
Non-USGS Publications**
Kirby, R., H.E. Johnson, M.W. Alldredge, and J.N. Pauli. 2019. The cascading effects of human food on hibernation and cellular aging in free-ranging black bears. Scientific Reports 9:2197. doi:10.1038/s41598-019-38937-5.
Lischka, S. A., T. L. Teel, H. E. Johnson, K. R. Crooks. 2019. Understanding and managing human tolerance for a large carnivore in a residential system. Biological Conservation 238. doi:10.1016/j.biocon.2019.07.034.
Wilbur, R. C., S. A. Lischka, J. R. Young, and H. E. Johnson. 2018. Experience, attitudes, and demographic factors influence the probability of reporting human-black bear interactions. Wildlife Society Bulletin 42(1):22-31. doi:10.1002/wsb.854.
Lukacs, P. M., M. S. Mitchell, M. Hebblewhite, B. K. Johnson, H. E. Johnson, M. Kauffman, K. M. Proffitt, P. Zager, J. Brodie, K. Hersey, A. Holland, M. Hurley, S. McCorquodale, A. Middleton, J. Nowak, D. P. Walsh, and P. J. White. 2018. Factors influencing elk recruitment across ecotypes in the western United States. Journal of Wildlife Management 82(4):698-710. doi:10.1002/jwmg.21438 https://doi.org/10.1002/jwmg.21438.
Johnson, H. E., D. L. Lewis, S. A. Lischka, and S. W. Breck. 2018. Assessing ecological and social outcomes of a bear-proofing experiment. Journal of Wildlife Management 82(6):1102-1114. doi:10.1002/jwmg.21472.
Laufenburg, J. S., H. E. Johnson, P. F. Doherty, Jr, and S. W. Breck. 2018. Compounding effects of human development and a natural food shortage on a black bear population along a human development-wildland interface. Biological Conservation 224:188-198. doi:10.1016/j.biocon.2018.05.004.
Lischka, S. A., T. L. Teel, H. E. Johnson, S. E. Reed, S. W. Breck, A. W. Don Carlos, and K. R. Crooks. 2018. A conceptual model for the integration of social and ecological information to understand human-wildlife interactions. Biological Conservation 225:80-87. doi:10.1016/j.biocon.2018.06.020.
Johnson, H. E., D. L. Lewis, T. L. Verzuh, C. F. Wallace, R. M. Much, L. K. Willmarth, and S. W. Breck. 2017. Human development and climate affect hibernation in a large carnivore with implications for human-carnivore conflicts. Journal of Applied Ecology 55(2):663-672. doi:10.1111/1365-2664.13021.
Johnson, H. E., J. R. Sushinsky, A. Holland, E. J. Bergman, T. Balzer, J. Garner, and S. E. Reed. 2016. Increases in residential and energy development are associated with reductions in recruitment for a large ungulate. Global Change Biology 23(2):578-591. doi:10.1111/gcb.13385.
Wolfe, L. L., H. E. Johnson, M. C. Fisher, W. R. Lance, D. K. Smith, and M. W. Miller. 2016. Chemical immobilization in American black bears using a combination of nalbuphine, medetomidine, and azaperone. Ursus 27(1):1-4. doi:10.2192/URSUS-D-15-00018.1.
Johnson, H. E., S. W. Breck, S. Baruch-Mordo, D. L. Lewis, C. W. Lackey, K. R. Wilson, J. Broderick, J. S. Mao, and J. P. Beckmann. 2015. Shifting perceptions of risk and reward: dynamic selection for human development by black bears in the western United States. Biological Conservation 187:164-172. doi:10.1016/j.biocon.2015.04.014.
Wolfe, L. L., H. E. Johnson, M. C. Fisher, M. A. Sirochman, B. Kraft, and M. W. Miller. 2014. Evaluation of an acepromazine and medetomidine combination (AcMe) for immobilization of Rocky Mountain elk and black bears. Journal of Wildlife Diseases 50(4):979-981. doi:10.7589/2014-02-052.
Johnson, H. E., J. W. Fischer, M. Hammond, P. D. Dorsey, W. D. Walter, C. Anderson, and K. C. VerCauteren. 2014. Evaluation of techniques to reduce deer and elk damage to agricultural resources. Wildlife Society Bulletin 38(2):358-365. doi: 10.1002/wsb.408.
Brodie, J., H. E. Johnson, M. Mitchell, P. Zager, K. M. Proffitt, M. Hebblewhite, M. Kauffman, B. A. Johnson, J. A. Bissonette, C. Bishop, J. Gude, K. Hersey, M. Hurley, P. M. Lukacs, S. McCorquodale, E. McIntire, J. Nowak, H. Sawyer, D. K. Smith, and P. J. White. 2013. Relative influence of human harvest, carnivores, and weather on adult female elk survival across western North America. Journal of Applied Ecology 50(2):295-305. doi:10.1111/1365-2664.12044.
Johnson, H. E., M. Hebblewhite, T. R. Stephenson, D. W. German, B. M. Pierce, and V. C. Bleich. 2013. Evaluating apparent competition in limiting the recovery of an endangered ungulate. Oecologia 171(1):295-307. doi:10.1007/s00442-012-2397-6.
Johnson, H. E., L. S. Mills, J. D. Wehausen, T. R. Stephenson, and G. Luikart. 2011. Translating effects of inbreeding depression on component vital rates to overall population growth in endangered bighorn sheep. Conservation Biology 25(6):1240-1249. doi:10.1111/j.1523-1739.2011.01739.x.
Cahn, M. L., M. M. Conner, O. J. Schmitz, T. R. Stephenson, J. D. Wehausen, and H. E. Johnson. 2011. Disease, population viability, and recovery of endangered Sierra Nevada bighorn sheep. Journal of Wildlife Management 75(8):1753-1766. doi:10.1002/jwmg.232.
Johnson, H. E., L. S. Mills, T. R. Stephenson, and J. D. Wehausen. 2010. Population-specific vital rate contributions influence management of an endangered ungulate. Ecological Applications 20(6):1753-765. doi:10.1890/09-1107.1.
Johnson, H. E., L. S. Mills, J. D. Wehausen, and T. R. Stephenson. 2010. Combining ground count, telemetry, and mark–resight data to infer population dynamics in an endangered species. Journal of Applied Ecology 47(5):1083-1093. doi:10.1111/j.1365-2664.2010.01846.x.
Bleich, V. C., H. E. Johnson, S. A. Holl, L. Konde, S. G. Torres, and P. R. Krausman. 2008. Fire history in a chaparral ecosystem: implications for conservation of a native ungulate. Rangeland Ecology and Management 61(6):571-579. doi:10.2111/07-016.1.
Johnson, H. E., V. C. Bleich, P. R. Krausman, and J. L. Koprowski. 2007. Effects of antler breakage on mating behavior in male tule elk (Cervus elaphus nannodes). European Journal of Wildlife Research 53(1):9-15. doi:10.1007/s10344-006-0060-4.
Johnson, H. E., V. C. Bleich, and P. R. Krausman. 2005. Antler breakage in tule elk, Owens Valley. Journal of Wildlife Management 69(4):1747-1752. doi:10.2193/0022-541X(2005)69[1747:ABITEO]2.0.CO;2.
Cain, J. W., III, H. E. Johnson, and P. R. Krausman. 2005. Wildfire and desert bighorn sheep habitat. Southwestern Naturalist 50(4):506-513. doi:10.1894/0038-4909(2005)050[0506:WADBSH]2.0.CO;2.
Johnson, H. E., S. A. Lischka, J. Broderick, J. Apker, S. W. Breck, J. P. Beckmann, K. R. Wilson, and P. D. Dorsey. 2016. Black bear exploitation of urban environments: finding management solutions and assessing regional population effects. Colorado Division of Parks and Wildlife Federal Aid Project No. W-204-R4, 21 p.
Johnson, H. E., P. D. Dorsey, M. Hammond, C. M. Bishop, K. C. VerCauteren, and C. Anderson, and D. Walter. 2013. Evaluating solutions to reduce elk and deer damage on agricultural resources. Colorado Division of Parks and Wildlife, Federal Aid Wildlife Research Report.
Mills, L. S. and H. E. Johnson. 2013. Wildlife population dynamics. Pages 84-111 in P. R. Krausman, and J. W. Cain III, editors. Wildlife management and conservation: contemporary principles and practices. Johns Hopkins University Press.
Johnson, H. E. 2010. Escaping the extinction vortex: identifying factors affecting population performance and recovery in endangered Sierra Nevada bighorn sheep. Dissertation, University of Montana, Missoula, MT, 243 p.
Johnson, H. E. 2006. Effects of translocations on Sierra Nevada bighorn sheep population viability. California Department of Fish and Game Technical Report, Bishop, CA.
Johnson, H. E., V. C. Bleich, and T. R. Stephenson. 2005. Habitat selection by mountain sheep and mule deer: understanding ecosystem health from the desert to the alpine. California Dept. of Fish and Game, University of California Davis Wildlife Health Center Resource Assessment Program. Final Report.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government