“Do more, talk less.”
- 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 undesirable species (i.e. mountain lions). (With Barry M. Goldwater Air Force Range, BLM , NPS, Turner Endangered Species Fund, Univ. AZ, USGS).
- Evaluating the response of desert bighorn sheep population growth rates and population sizes to artificially supplied water. Project designed to evaluate efficacy of this management technique (With Turner Endangered Species Fund, Univ. AZ, USGS).
- 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.
- 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. (Duke Univ., NatureServe, TX Tech, U. Idaho, U. Virginia, NJ Institute of Tech.).
- Evaluating quality of known subtropical grassland habitats, while searching for more of these endangered ecosystems within the Sonora desert. These habitats assist masked bobwhite quail recovery, and conservation of other species such as white-tailed hawks, Rufous-winged sparrows, antelope jackrabbits and Sonoran green toads.
Ph.D., 2004, Duke University, Ecology
B.S., 1991, University of New Hampshire, Zoology
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
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
G. Harris, 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