Grant Harris

Chief, Biological Sciences                       GH
Regional Office, Albuquerque
Phone: 505-248-6817
Email: Grant_Harris at

“Do more, talk less.”

Current Projects:

  • Use of artificial drinkers by desert mammals:  Project evaluates abiotic conditions under which desert mammals drink, and determines when such conditions occur.  This information enables managers to optimize water presentation (timing) for desirable species (i.e. desert bighorn sheep), and informs when to remove water to discourage other species (i.e. mountain lions).  (with Barry M. Goldwater Air Force Range, BLM , NPS, Turner Ranches Inc., Univ. AZ, USGS).
  • Evaluating and Improving Techniques to Estimate Ungulate Populations.  Optimizing survey timing and approaches for ungulates (with NM State).
  • Using camera traps to estimate abundance, survivorship and age class structure of mammal populations.  If successful, the method would generate an inexpensive and expansive inventory and monitoring tool for wildlife populations in the USA and abroad (with NM Game and Fish).
  • Quantifying trends in waterfowl numbers, timing and spatial use of National Wildlife Refuges across the Central Flyway.  Project determines the relative contribution of each refuge to waterfowl numbers and migration chronology, on a per species basis and in a flyway context. (With OK State and USGS).
  • Quantifying the response of 44 southwestern ecosystems to climate change over the next century.  We identify the species and habitats most prone to changing climates, determine how much area and biodiversity is affected, and where problem areas lie. Results assist FWS to anticipate and plan for biodiversity shifts within and across Refuges. (with USDA FS).

Ph.D., 2004, Duke University, Ecology
B.S., 1991, University of New Hampshire, Zoology


Stewart, D. R., Butler, M. J., Harris, G., Johnson, L. A., & Radke, W. R. 2017. Estimating abundance of endangered fish by eliminating bias from non-constant detectability. Endangered Species Research, 32, 187get pdf

Stewart, D. R., Butler, M. J., Harris, G., & Radke, W. R. 2017. Mark-recapture models identify imminent extinction of Yaqui catfish Ictalurus pricei in the United States. Biological Conservation, 209, 45-53. get pdf * This publication was featured in Yale Environment 360 February 2017, click here

Jennings, M. D., & Harris, G. M. (2017). Climate change and ecosystem composition across large landscapes. Landscape Ecology, 32(1), 195-207. get pdf

Harris, G., Sanderson, J. G., Erz, J., Lehnen, S. E., & Butler, M. J. 2015. Weather and Prey Predict Mammals’ Visitation to Water. PloS one, 10(11), e0141355. get pdf

Butler, M. J., Metzger, K. L., & Harris, G. 2014. Whooping crane demographic responses to winter drought focus conservation strategies. Biological Conservation, 179, 72-85. get pdf

Gedir, J. V., Cain, J. W., Harris, G., & Turnbull, T. T. 2015. Effects of climate change on long‐term population growth of pronghorn in an arid environment. Ecosphere, 6(10), 1-20.get pdf

Butler, M. J., Metzger, K. L., & Harris, G. 2014. Whooping crane demographic responses to winter drought focus conservation strategies. Biological Conservation, 179, 72-85. get pdf

Mashintonio, A. F., Pimm, S. L., Harris, G. M., van Aarde, R. J., & Russell, G. J. 2014. Data-driven discovery of the spatial scales of habitat choice by elephants. PeerJ, 2, e504. get pdf

Conroy, M. J., Henry, R. S., & Harris, G. 2014. Estimation of regional sheep abundance based on group sizes. The Journal of Wildlife Management, 78(5), 904-913

Harris, G., S. Farley, G. J. Russell, M. J. Butler, and J. Selinger. 2013. Sampling designs matching species biology produce accurate and affordable abundance indices. PeerJ 1:e227.get pdf

Harris, G., R. M. Nielson, T. Rinaldi and T. Lohuis. 2013. Effects of winter recreation on northern ungulates with focus on moose (Alces alces) and snowmobiles. European Journal of Wildlife Research. DOI 10.1007/s10344-013-0749-0. get pdf

Schnell, J. K., G. M. Harris, S. L. Pimm, and G. J.  Russell. 2013. Quantitative Analysis of Forest Fragmentation in the Atlantic Forest Reveals More Threatened Bird Species than the Current Red List. PloS one, 8(5), e65357. get pdf

Schnell, J. K., G. M. Harris, S. L. Pimm, and G. J. Russell. 2013. Estimating Extinction Risk with Metapopulation Models of Large-Scale Fragmentation. Conservation Biology. get pdf

Butler, M. J., G. Harris, and B. N. Strobel.  2013.  Influence of whooping crane population dynamics on its recovery and management.  Biological Conservation 162:89–99. get pdf

Brown, D. E., K. B. Clark, R. D. Babb, and G. Harris. 2012. An analysis of masked bobwhite collection locales and habitat characteristics. Proceedings of the National Quail Symposium 7:305–328. get pdf

Harris, G. , Thompson, R., Childs, J. L., and J. G. Sanderson. 2010. Automatic Storage and Analysis of Camera Trap Data. Bulletin of the Ecological Society of America 91:352–360. get pdf

Harris, G. , Smythe, L. and R. Henry. 2009. Predation by mountain lions is capable of causing desert bighorn sheep population Decline at Kofa National Wildlife Refuge. Desert Bighorn Council Transactions 50: 40 – 53. get pdf

Alves, M.A.S., S.L. Pimm, A. Storni, M. Raposo, M.deL. Brooke, G. Harris, A. Foster and C.N. Jenkins. 2009. Birds, Montane forest, State of Rio de Janeiro, Southeastern Brazil. Check List 5(2): 289-299. get pdf

Harris, G. , Thirgood, S., Hopcraft, G., Cromsigt, J. P.G.M. and J. Berger. 2009. Global decline in aggregated migrations of large terrestrial mammals. Endangered Species Research 7: 55 – 76. get pdf *This publication was featured in a story aired by National Public Radio on June 9, 2009, to listen to the story click here

Alves, M.A.S., Pimm, S.L., Storni, A., Raposo, M., Brook, M. de L., Harris, G., Foster, A., and C.N. Jenkins. 2008. Mapping and exploring the distribution of the Vulnerable grey-winged cotinga Tijuca condita. Oryx 42: 562 – 566. get pdf

Harris, G. M. , Russell, G. J., van Aarde, R. J., and S. L. Pimm. 2008. Rules of habitat use by elephants Loxodonta africana in southern Africa: insights for regional management. Oryx 42: 66 – 75. get pdf

Harris, G. and S. L. Pimm. 2008. Range size and extinction risk in forest birds. Conservation Biology 22: 163 – 171. get pdf* Publication featured in Nature 449: 950 (2007).

Harris, G.M. , Jenkins, C.N. and S.L. Pimm. 2005. Refining biodiversity conservation priorities. Conservation Biology19: 1957 – 1968. get pdf

Harris, G. M. , and S.L. Pimm. 2004. Bird species’ tolerance of secondary forest habitats and its effects on extinction. Conservation Biology18: 1607 – 1616. * Publication featured in Nature 432: 967 (2004). get pdf