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Directory of Expertise

Meet our scientists and explore their expertise

How our Program Works

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Our Graduate Students

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Recruiting Graduate Students

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We are Hiring!

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Diversity, Equity, Inclusion, Accessiblity

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History

Ding Darling's Brilliant Idea

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The Cooperative Fish and Wildlife Research Unit Program was conceived and initiated in Iowa by the cartoonist, political satirist, and conservationist J. N. "Ding" Darling. In the early 1930s, Darling was the commissioner of the Iowa Fish and Game Commission when he created the cooperative wildlife research unit as a joint venture of Iowa State College and the Iowa Fish and Game Commission.

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2 Years (1935-1937)

A photo of a hunter in The Yosemite National Park

Accomplishments of the Cooperative Research Units: A Summary to January 31, 1937. Wildlife Research and Management Leaflet BS-87, By Hartley H. T. Jackson

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30 Years (1935-1965)

wild turkeys in Texas

This booklet summarize progress made since 1935 in wildlife training and research. It is also a report to the public, including thousands of people who participated in the program.

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71 Years (1935-2006)

Bison in Yellowstone National Park.

This book is about our program; how it operates, how it originated, and how it evolved through the years. This program rests on Unit staff, graduate students, and program support staff.

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Locations

Social Media

Contacts

Jonathan Mawdsley, PhD

Program Chief
Cooperative Research Units
Phone
571-643-1922

Cyndy Loftin, PhD

Supervisory Biologist
Cooperative Research Units
Phone
207-581-2843

Kevin Whalen, PhD

Supervisory Biologist
Cooperative Research Units
Phone
703-269-7711

Lisa Webb, PhD

Supervisory Biologist
Cooperative Research Units
Phone
573-540-0634

Employee Directory

Job Title
Name
Email
Phone
Research Wildlife Biologist Abby Powell, PhD abby_powell@usgs.gov 352-846-0543
Research Ecologist Abigail Lawson, PhD alawson@usgs.gov 301-497-5722
Biologist (Social Scientist) Alex McInturff, PhD mmcinturff@usgs.gov
Research Fish Biologist Alexander Zale, PhD zale@usgs.gov 406-994-2380
Research Fish Biologist Allison Roy, PhD aroy@usgs.gov 413-545-4895
Management Analyst Amanda Gelsomin agelsomin@usgs.gov 703-648-4266
Research Ecologist Amanda Rosenberger, PhD arosenberger@usgs.gov 573-882-9653
Research Fish Biologist Andrew K. Carlson, PhD acarlson@usgs.gov
Research Wildlife Biologist Angela Fuller, PhD afuller@usgs.gov 607-255-2841
Research Ecologist Anna Chalfoun, PhD achalfoun@usgs.gov 307-766-6966
Research Wildlife Biologist Anna Tucker, PhD amtucker@usgs.gov 301-497-5500
Research Ecologist Annika Walters, PhD awalters@usgs.gov 307-766-5473
Research Ecologist Bill Kendall, PhD wkendall@usgs.gov 970-491-7066
Research Wildlife Biologist Bob Klaver, PhD bklaver@usgs.gov 515-294-7639
Administrative Program Specialist Brenda Croston brenda_croston@usgs.gov 703-648-4263
Safety and Occupational Health Specialist Brent Sigafus bsigafus@usgs.gov 520-670-6671
Research Wildlife Biologist Brett A. DeGregorio, PhD bdegregorio@usgs.gov
Research Fish Biologist Brian Irwin, PhD bjirwin@usgs.gov 706-542-0790
Assistant Unit Leader Brian Folt, Ph.D. bfolt@usgs.gov
Research Ecologist Brian Gerber, PhD bgerber@usgs.gov 970-491-1415
Research Wildlife Biologist Caleb P. Roberts, PhD cproberts@usgs.gov
Programs and Partnerships Coordinator Caroline E. Murphy, AWB® cemurphy@usgs.gov 703-817-6696
Research Fish Biologist Chad Teal, PhD cteal@usgs.gov 435-797-7565
Research Ecologist Christian Che-Castaldo, PhD cche-castaldo@usgs.gov 608-264-0809
Research Ecologist Christina A. Murphy, PhD camurphy@usgs.gov
Research Fish Biologist Christopher Guy, PhD cguy@usgs.gov 406-994-3491
Research Wildlife Biologist Clint Boal, PhD cboal@usgs.gov 806-834-6536
Research Wildlife Biologist Conor McGowan, PhD cmcgowan@usgs.gov 334-844-9231
Research Fish Biologist Corey G. Dunn, PhD cdunn@usgs.gov
Research Wildlife Biologist Courtney Conway, PhD cconway@usgs.gov 208-885-6176
Research Fish Biologist Craig Paukert, PhD cpaukert@usgs.gov 573-882-3524
Supervisory Biologist Cyndy Loftin, PhD cyndy_loftin@usgs.gov 207-581-2843
Research Fish Biologist Dan Isermann, PhD disermann@usgs.gov 715-295-8878
Research Fish Biologist Dan Magoulick, PhD danmag@usgs.gov 479-575-5449
Research Fish Biologist Dana Winkelman, PhD danaw@usgs.gov 970-491-1414
Research Wildlife Biologist Daniel P. Walsh, PhD dwalsh@usgs.gov 608-270-2481
Research Widlife Biologist Daniel Sullins, PhD dsullins@usgs.gov 785-532-1405
Research Ecologist Dave Haukos, PhD dhaukos@usgs.gov 785-532-5761
Research Wildlife Biologist David Andersen, PhD dea@usgs.gov 612-626-1222
Research Wildlife Biologist David Ausband, PhD dausband@usgs.gov
Research Ecologist David Fulton, PhD dcf@usgs.gov 612-625-5256
Information Specialist Dawn Childs dchilds@usgs.gov
Program Analyst Derek Geary dgeary@usgs.gov 703-648-4380
Senior Program Biologist Don Dennerline, PhD ddennerline@usgs.gov 706-705-6042
Research Wildlife Biologist Drew N. Fowler, PhD dfowler@usgs.gov
Research Wildlife Biologist Duane Diefenbach, PhD drd11@usgs.gov 814-865-4511
Biologist Elise Irwin, PhD eirwin@usgs.gov 334-703-1663
Research Ecologist Elizabeth A. Hunter, PhD eahunter@usgs.gov
Research Ecologist Erica F. Stuber, PhD estuber@usgs.gov
Research Wildlife Biologist Erin K Buchholtz, PhD ebuchholtz@usgs.gov 970-226-9309
Research Wildlife Biologist Grace V. DiRenzo, PhD gdirenzo@usgs.gov 413-545-4888
Research Fish Biologist Jacob T. Westhoff, PhD jwesthoff@usgs.gov
Research Wildlife Biologist Jaime Collazo, PhD jaime_collazo@usgs.gov 919-515-8837
Research Wildlife Biologist James Cain, III, PhD jwcain@usgs.gov 575-646-3382
Research Fish Biologist James M. Long, PhD jmlong@usgs.gov
Research Fish Biologist Jane Rogosch, PhD jrogosch@usgs.gov
Research Ecologist Jared J. Homola, PhD jhomola@usgs.gov 517-214-7039
Research Ecologist Javan M. Bauder, PhD jbauder@usgs.gov
Research Fish Biologist Jeffrey D. Muehlbauer, PhD jmuehlbauer@usgs.gov 907-474-5773
Research Fish Biologist Jeffrey Falke, PhD jfalke@usgs.gov 907-474-6044
Research Fish Biologist Jim Peterson, PhD james_peterson@usgs.gov 541-737-1963
Administrative Student Intern John Withers jwithers@usgs.gov
Program Chief Jonathan Mawdsley, PhD jmawdsley@usgs.gov 571-643-1922
Research Ecologist Jonathan J. Spurgeon, PhD jspurgeon@usgs.gov (573) 291-1009
Research Wildlife Biologist Jonathon J. Valente, PhD jvalente@usgs.gov
Research Ecologist Joshua Stafford, PhD jstafford@usgs.gov 605-688-5759
Research Ecologist Kasey Pregler, PhD kpregler@usgs.gov 575-646-8126
Research Ecologist Katie Dugger, PhD cdugger@usgs.gov 541-737-2473
Research Fish Biologist Kelly F. Robinson, PhD kfrobinson@usgs.gov
Deputy Chief Kevin L. Pope, PhD kpope@usgs.gov 571-548-2420
Supervisory Biologist Kevin Whalen, PhD kwhalen@usgs.gov 703-269-7711
Research Wildlife Biologist Laura C. Gigliotti, PhD lcgigliotti@usgs.gov
Research Fish Biologist Leandro Miranda, PhD smiranda@usgs.gov 662-325-4763
Research Ecologist Lillian T. Raz, PhD ltuttleraz@usgs.gov
Supervisory Biologist Lisa Webb, PhD ewebb@usgs.gov 573-540-0634
Research Fish Biologist Luke M. Bower, PhD lbower@usgs.gov
Research Fish Biologist Lynn Waterhouse, PhD lwaterhouse@usgs.gov
Research Ecologist Mark D. Scheuerell, PhD mscheuerell@usgs.gov
Research Wildlife Biologist Mark Ford, PhD wford@usgs.gov 540-231-5927
Research Fish Biologist Mark Henderson, PhD mhenderson@usgs.gov 707-826-5644
Research Fish Biologist Mark Rogers, PhD mwrogers@usgs.gov 931-372-3032
Research Fish Biologist Martha Mather, PhD mather@usgs.gov 413-329-2105
Research Ecologist Matthew Falcy, PhD mfalcy@usgs.gov
Research Wildlife Biologist Matthew Kauffman, PhD mkauffman@usgs.gov 307-766-6404
Research Fish Biologist Megan La Peyre, PhD mlapeyre@usgs.gov 225-578-4180
Biologist (Social Scientist) Megan S. Jones, PhD mjones@usgs.gov
Research Fish Biologist Melanie Culver, PhD mculver@usgs.gov 520-626-3775
Research Ecologist Melanie Davis, PhD melaniedavis@usgs.gov 614-519-3107
Research Fish Biologist Michael Booth, PhD mbooth@usgs.gov
Research Fish Biologist Michael C. Quist, PhD mquist@usgs.gov 208-885-4064
Research Fish Biologist Michael J. Moore, PhD mmoore@usgs.gov
Research Wildlife Biologist Nathan J Hostetter, PhD nhostetter@usgs.gov
Research Fish Biologist Nicholas Som, PhD nsom@usgs.gov 707- 826 -5645
Research Fish Biologist Pat Mazik, PhD pmazik@usgs.gov 304-293-4943
Research Fish Biologist Paul Angermeier, PhD biota@usgs.gov 540-231-4501
Research Fish Biologist Phaedra Budy, PhD pbudy@usgs.gov 435-797-7564
Research Wildlife Biologist Raymond R. Carthy, PhD rayc@usgs.gov 352-846-0545
Research Fish Biologist Reynaldo Patino, PhD r.patino@usgs.gov 806-834-6483
Research Wildlife Biologist Robert C. Lonsinger, PhD rlonsinger@usgs.gov 484-459-1977
Budget and Financial Technician Roberta Chaves rchaves@usgs.gov
Research Wildlife Biologist Sammy King, PhD sking@usgs.gov 225-578-7564
Research Wildlife Biologist Sarah A Sonsthagen, PhD ssonsthagen@usgs.gov 402-472-0449
Research Ecologist Sarah J Converse, PhD sconverse@usgs.gov 301-497-5635
Research Ecologist Sarah N. Sells, PhD ssells@usgs.gov
Research Fish Biologist Scott Bonar, PhD sbonar@usgs.gov 520-621-1193
Administrative Officer Shana Coulby scoulby@usgs.gov 703-648-4361
Research Fish Biologist Shannon Brewer, PhD skbrewer@usgs.gov 334-844-9237
Research Wildlife Biologist Shawn Crimmins, PhD scrimmins@usgs.gov
Research Fish Biologist Steve Chipps, PhD steve_chipps@usgs.gov 605-688-5467
Research Wildlife Biologist Steven M. Grodsky, PhD sgrodsky@usgs.gov
Research Fish Biologist Stuart Welsh, PhD swelsh@usgs.gov 304-293-5006
Administrative Program Assistant Sumina Pokharel spokharel@usgs.gov (703) 648-4264
Research Ecologist Tammy L. Wilson, PhD tlwilson@usgs.gov 435-881-9151
Research Wildlife Biologist Terri Donovan, PhD tdonovan@usgs.gov 802-656-2516
Administrative Officer Terrie Delinski tdelinski@usgs.gov 703-648-7649
Biologist - Data Scientist Tess McConnell, AWB® tmcconnell@usgs.gov
Research Fish Biologist Tim Grabowski, PhD tgrabowski@usgs.gov 806-834-4388
Research Fish Biologist Tyler Wagner, PhD twagner@usgs.gov 814-865-4511
Research Ecologist W. David Walter, PhD wwalter@usgs.gov 814-867-4763
Biologist Wendy Turner, PhD wturner@usgs.gov
Safety and Occupational Health Specialist Zack Holcomb zholcomb@usgs.gov 785-832-3558
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