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Our researchers are based in Bozeman, Montana with field stations at West Glacier and Missoula, Montana and duty stations in Jackson, Wyoming and Knoxville, Tennessee. Scientists from NOROCK work throughout the United States and the world on issues as diverse as global climate change, aquatic ecology, wildlife diseases and genetics, aeroecology, invasive species, and large carnivores. 

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Employee Directory

Job Title Name Email Sort descending Phone
Research Ecologist Aaron Johnston, Ph.D. ajohnston@usgs.gov 406-994-7158
Physical Scientist Adam Clark amclark@usgs.gov 406-888-7993
Research Zoologist Adam Sepulveda, Ph.D. asepulveda@usgs.gov 406 404 9155
Biologist Bryn Karabensh bkarabensh@usgs.gov 406-994-5041
Research Zoologist Blake Hossack, Ph.D. blake_hossack@usgs.gov 406-243-4495
Biologist Brian Tornabene, Ph.D. btornabene@usgs.gov
Research Physical Scientist Caitlyn Florentine, Ph.D. cflorentine@usgs.gov 303-548-7693
Biological Science Technician Chad Dickinson chad_dickinson@usgs.gov 406-994-5054
Research Ecologist Clint Muhlfeld, Ph.D. cmuhlfeld@usgs.gov 406-600-9686
Center Director Claudia Regan, Ph.D. cregan@usgs.gov 406-994-7972
Biological Science Technician Craig Whitman cwhitman@usgs.gov 406-994-6135
Mendenhall Postdoctoral Research Fellow, Microbiologist Devin N Jones, Ph.D. dnjones@usgs.gov
Research Ecologist Erik Beever, Ph.D. ebeever@usgs.gov 406-994-7670
Biologist Erica Sarro Gustilo, PhD egustilo@usgs.gov
Research Physical Scientist Erich Peitzsch, Ph.D epeitzsch@usgs.gov 406-599-9970
Supervisory Research Wildlife Biologist Frank T van Manen, Ph.D. fvanmanen@usgs.gov 406-994-5043
Biologist Gavin Cotterill, PhD gcotterill@usgs.gov
Research Ecologist Greg Pederson, Ph.D. gpederson@usgs.gov 406-994-7390
Fish Biologist Hayley Glassic, Ph.D. hglassic@usgs.gov
Supervisory Research Ecologist Joseph Clark, Ph.D. jclark1@usgs.gov 865-974-4790
Administrative Officer Judy O'Dwyer jodwyer@usgs.gov 406-994-7544
Ecologist Justin T Martin justinmartin@usgs.gov 406-994-5304
IT Specialist Kelvin Miller kdmiller@usgs.gov 406-994-7085
Research Statistician Kathi Irvine, Ph.D. kirvine@usgs.gov 406-994-7492
Physical Scientist Lisa McKeon lisa_mckeon@usgs.gov
NGP Emergency Response Coordinator; GIRT Chair Lance Clampitt lsclampitt@usgs.gov 406-994-6919
Biologist Matthew Gould, Ph.D. mgould@usgs.gov 406-994-6269
Supervisory Wildlife Biologist Mark Haroldson mharoldson@usgs.gov 406-994-5042
Research Wildlife Biologist Paul Cross, Ph.D. pcross@usgs.gov 406-994-6908
Biologist Patrick Hutchins phutchins@usgs.gov
Administrative Operations Assistant Paula Thomsen pthomsen@usgs.gov 406-994-1977
Research Fish Biologist Robert Al-Chokhachy, Ph.D. ral-chokhachy@usgs.gov 409-994-7842
Research Ecologist Robb Diehl, Ph.D. rhdiehl@usgs.gov 406-994-7481
Partnership Ecologist Sheree J. Watson, PhD swatson@usgs.gov 406-994-6556
Research Ecologist Tabitha Graves, Ph.D. tgraves@usgs.gov 406-589-6645
Physical Scientist Todd Preston tmpreston@usgs.gov 406-994-5034
Science Communications Biologist Todd Wojtowicz, Ph.D. twojtowicz@usgs.gov
Fisheries Biologist Vin D'Angelo vdangelo@usgs.gov 406-888-7991
Biologist Will Janousek, Ph.D. wjanousek@usgs.gov 406-888-7996
Biologist Wynne Moss, Ph.D. wmoss@usgs.gov
Physical Scientist Zachary Miller zsmiller@usgs.gov 406-888-7922