Heather Johnson, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 34
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 R. Fogarty, Sheridan K. Haack, Heather E. Johnson, Angela K. Brennan, Natasha M. Isaacs, Chelsea Spencer
Genes indicative of zoonotic and swine pathogens are persistent in stream water and sediment following a swine manure spill Genes indicative of zoonotic and swine pathogens are persistent in stream water and sediment following a swine manure spill
Manure spills to streams are relatively frequent, but no studies have characterized stream contamination with zoonotic and veterinary pathogens, or fecal chemicals, following a spill. We tested stream water and sediment over 25 days and downstream for 7.6 km for: fecal indicator bacteria (FIB); the fecal indicator chemicals cholesterol and coprostanol; 20 genes for zoonotic and swine...
Authors
Sheridan K. Haack, Joseph W. Duris, Dana W. Kolpin, Lisa R. Fogarty, Heather E. Johnson, Kristen E. Gibson, Michael J. Focazio, Kellogg J. Schwab, Laura E. Hubbard, William T. Foreman
Occurrence and distribution of fecal indicator bacteria and gene markers of pathogenic bacteria in Great Lakes tributaries, March-October 2011 Occurrence and distribution of fecal indicator bacteria and gene markers of pathogenic bacteria in Great Lakes tributaries, March-October 2011
From March through October 2011, the U.S. Geological Survey (USGS), conducted a study to determine the frequency of occurrence of pathogen gene markers and densities of fecal indicator bacteria (FIB) in 22 tributaries to the Great Lakes. This project was funded as part of the Great Lakes Restoration Initiative (GLRI) and included sampling at 22 locations throughout 6 states that border...
Authors
Angela K. Brennan, Heather E. Johnson, Alexander R. Totten, Joseph W. Duris
Marsh soils as potential sinks for Bacteroides fecal indicator bacteria, Waccamaw National Wildlife Refuge, Georgetown, SC, USA Marsh soils as potential sinks for Bacteroides fecal indicator bacteria, Waccamaw National Wildlife Refuge, Georgetown, SC, USA
A soil core collected in a tidal freshwater marsh in the Waccamaw National Wildlife Refuge (Georgetown, SC) exuded a particularly strong odor of cow manure upon extrusion. In order to test for manure and determine its provenance, we carried out microbial source tracking using DNA markers for Bacteroides, a noncoliform, anaerobic bacterial group that represents a broad group of the fecal...
Authors
Judith Z. Drexler, Heather E. Johnson, Joseph W. Duris, Ken W. Krauss
Geographic setting influences Great Lakes beach microbiological water quality Geographic setting influences Great Lakes beach microbiological water quality
Understanding of factors that influence Escherichia coli (EC) and enterococci (ENT) concentrations, pathogen occurrence, and microbial sources at Great Lakes beaches comes largely from individual beach studies. Using 12 representative beaches, we tested enrichment cultures from 273 beach water and 22 tributary samples for EC, ENT, and genes indicating the bacterial pathogens Shiga-toxin...
Authors
Sheridan K. Haack, Lisa R. Fogarty, Erin A. Stelzer, Lori M. Fuller, Angela K. Brennan, Natasha M. Isaacs, Heather E. Johnson
Relative influence of human harvest, carnivores, and weather on adult female elk survival across western North America Relative influence of human harvest, carnivores, and weather on adult female elk survival across western North America
Well-informed management of harvested species requires understanding how changing ecological conditions affect demography and population dynamics, information that is lacking for many species. We have limited understanding of the relative influence of carnivores, harvest, weather and forage availability on elk Cervus elaphus demography, despite the ecological and economic importance of...
Authors
Jedediah Brodie, Heather E. Johnson, Michael Mitchell, Peter Zager, Kelly Proffitt, Mark Hebblewhite, Matthew Kauffman, Bruce Johnson, John Bissonette, Chad Bishop, Justin Gude, Jeff Herbert, Kent Hersey, Mark Hurley, Paul M. Lukacs, Scott McCorquodale, Eliot McIntire, Josh Nowak, Hall Sawyer, Douglas Smith, P.J. White
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: 34
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 R. Fogarty, Sheridan K. Haack, Heather E. Johnson, Angela K. Brennan, Natasha M. Isaacs, Chelsea Spencer
Genes indicative of zoonotic and swine pathogens are persistent in stream water and sediment following a swine manure spill Genes indicative of zoonotic and swine pathogens are persistent in stream water and sediment following a swine manure spill
Manure spills to streams are relatively frequent, but no studies have characterized stream contamination with zoonotic and veterinary pathogens, or fecal chemicals, following a spill. We tested stream water and sediment over 25 days and downstream for 7.6 km for: fecal indicator bacteria (FIB); the fecal indicator chemicals cholesterol and coprostanol; 20 genes for zoonotic and swine...
Authors
Sheridan K. Haack, Joseph W. Duris, Dana W. Kolpin, Lisa R. Fogarty, Heather E. Johnson, Kristen E. Gibson, Michael J. Focazio, Kellogg J. Schwab, Laura E. Hubbard, William T. Foreman
Occurrence and distribution of fecal indicator bacteria and gene markers of pathogenic bacteria in Great Lakes tributaries, March-October 2011 Occurrence and distribution of fecal indicator bacteria and gene markers of pathogenic bacteria in Great Lakes tributaries, March-October 2011
From March through October 2011, the U.S. Geological Survey (USGS), conducted a study to determine the frequency of occurrence of pathogen gene markers and densities of fecal indicator bacteria (FIB) in 22 tributaries to the Great Lakes. This project was funded as part of the Great Lakes Restoration Initiative (GLRI) and included sampling at 22 locations throughout 6 states that border...
Authors
Angela K. Brennan, Heather E. Johnson, Alexander R. Totten, Joseph W. Duris
Marsh soils as potential sinks for Bacteroides fecal indicator bacteria, Waccamaw National Wildlife Refuge, Georgetown, SC, USA Marsh soils as potential sinks for Bacteroides fecal indicator bacteria, Waccamaw National Wildlife Refuge, Georgetown, SC, USA
A soil core collected in a tidal freshwater marsh in the Waccamaw National Wildlife Refuge (Georgetown, SC) exuded a particularly strong odor of cow manure upon extrusion. In order to test for manure and determine its provenance, we carried out microbial source tracking using DNA markers for Bacteroides, a noncoliform, anaerobic bacterial group that represents a broad group of the fecal...
Authors
Judith Z. Drexler, Heather E. Johnson, Joseph W. Duris, Ken W. Krauss
Geographic setting influences Great Lakes beach microbiological water quality Geographic setting influences Great Lakes beach microbiological water quality
Understanding of factors that influence Escherichia coli (EC) and enterococci (ENT) concentrations, pathogen occurrence, and microbial sources at Great Lakes beaches comes largely from individual beach studies. Using 12 representative beaches, we tested enrichment cultures from 273 beach water and 22 tributary samples for EC, ENT, and genes indicating the bacterial pathogens Shiga-toxin...
Authors
Sheridan K. Haack, Lisa R. Fogarty, Erin A. Stelzer, Lori M. Fuller, Angela K. Brennan, Natasha M. Isaacs, Heather E. Johnson
Relative influence of human harvest, carnivores, and weather on adult female elk survival across western North America Relative influence of human harvest, carnivores, and weather on adult female elk survival across western North America
Well-informed management of harvested species requires understanding how changing ecological conditions affect demography and population dynamics, information that is lacking for many species. We have limited understanding of the relative influence of carnivores, harvest, weather and forage availability on elk Cervus elaphus demography, despite the ecological and economic importance of...
Authors
Jedediah Brodie, Heather E. Johnson, Michael Mitchell, Peter Zager, Kelly Proffitt, Mark Hebblewhite, Matthew Kauffman, Bruce Johnson, John Bissonette, Chad Bishop, Justin Gude, Jeff Herbert, Kent Hersey, Mark Hurley, Paul M. Lukacs, Scott McCorquodale, Eliot McIntire, Josh Nowak, Hall Sawyer, Douglas Smith, P.J. White
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