Washington Fish and Wildlife Office
Pacific Region

Fisheries Program - Staff Biographies

Kevin Aitkin - Kevin is the Invasive Species lead for the Washington Fish and Wildlife Office, as well as an Assistant Regional ANS Coordinator for Region 1. Kevin is a member of the Washington State ANS Coordinating Committee executive committee, the 100th Meridian Initiative – Columbia River Basin Team, and the Chehalis Weed Work Group. Kevin is the Western Washington FRIMA Coordinator and member of the Project Review Team. He is a member of the Pacific Northwest Native Freshwater Mussel Workgroup. He also provides technical assistance on reptile and amphibian issues.

Mark Celedonia -
Mark has worked at the Washington Fish and Wildlife Office for 8 years, spending most of this time using fine-scale acoustic tracking and GIS to evaluate behavior, spatial distribution and habitat use of fish, especially juvenile Chinook salmon in Lake Washington and the Lake Washington Ship Canal. His work has included: identifying specific migratory behaviors and phases; site-specific evaluations of migratory pathways and habitat use; behavior around structures, including boat docks, bridges and the Ballard Locks; and, larger scale evaluations of movement timing through the Ship Canal in general. Other work has included using bioenergetic modeling to evaluate predation on juvenile salmonids; developing a benthic index of biotic integrity for use in western Washington rivers; and helping evaluate salmonid habitat use around natural and engineered logjams. Mark also had a 2-year stint with the Washington Department of Transportation where he studied plant community development at wetland mitigation sites. Mark has a Master of Environmental Studies from The Evergreen State College and a B.S. in mechanical engineering from Kettering University.

Carrie Cook-Tabor -
Carrie received her B.S. in fisheries management from Humboldt State University (1990) and an M.S. in fisheries science from the University of Washington (1994). She has been employed by the Fish and Wildlife Service for the past 17 years. She began her career as a field technician in the Arcata, CA, field office, followed by a summer focused on fish health issues in Olympia, WA, at the Olympia Fish Health Center. Carrie’s current focus is on harvest management issues, data management and analysis, computer programming, and technical support. She participates on the Pacific Salmon Commission’s Coho Technical Committee and Selective Fishery Evaluation Committee, and the Hood Canal Coordinating Council’s Lead Entity Technical Committee. Carrie has extensive experience with creating and maintaining database systems, statistical procedures, and numerous computer programs.

Yvonne Dettlaff - Yvonne recently joined the Fisheries Division. She has more than 10 years of experience in the natural resource field and started her federal career working for the U.S. Forest Service and Pacific Marine Fisheries Commission in Oregon, Nevada, and California. During those years, Yvonne worked on projects that dealt with owls, big horn sheep, fish, frogs, plants, and stream hydrology. Prior to working in the Fisheries Division, Yvonne worked on Section 7 in the consultation and technical assistance program. During the later years in that program, her projects were primarily from the U.S. Corps of Engineers, FERC, and U.S. Department of Defense. She was known as the "pipe girl" because she worked on so many gas pipeline projects. Yvonne received her science degree from Humboldt State University and went on to study herpetology at UC Berkeley. When she is not at her computer inputting and analyzing hatchery information, she is usually at home tending to her zoo or working on the 90-year-old shack she calls home. One might also find her trying to avoid being stung by her 28,324 honey bees, sheering sheep with kitchen scissors, running from erratic chickens, or trying to convince her husband she needs just one more fence for a horse.

Howard Gearns -
Howard began his career doing internships with the Washington Fish and Wildlife Office (WFWO) in 1999 while attending The Evergreen State College in Olympia, WA. After graduation, he spent the next 3 years working with the WFWO monitoring bull trout populations throughout the state of Washington and juvenile Chinook salmon in the Lake Washington watershed. Howard went to work for the Washington State Department of Fish and Wildlife working on warmwater fish population studies. He came back to the WFWO in 2003 and worked on monitoring projects in the Duwamish River, Lake Washington, and Quinault and Elwha watersheds. He is currently the mass marking and tagging trailer supervisor for the WFWO which supports the three Olympic Peninsula National Fish Hatcheries that our office works with.

Baker Holden III - Baker Holden III is a Supervisory Fishery Biologist for the Fisheries Division. Baker has 22+ years of experience working in the natural resources field. His career began in 1989 with the U.S. Forest Service in Gasquet, CA. There he performed a variety of duties ranging from Section 7 consultation to marking save trees in timber sale areas. He left the Forest Service in 1999 to work for Redwood National Park and State Parks. At Redwood, he was responsible for the completion of annual spawning carcass surveys, aquatic invasive species monitoring, deformed frog surveys and annual fish distribution surveys. In 2010, he left Redwood National and State Parks to serve as the Natural Resources Branch Chief for El Malpais and El Morro National Monuments. During his tenure there, he worked with multiple agencies at the state, federal and county levels in devoloping a response plan to protect bats from the disease called White Nose Syndrome. He joined the U.S. Fish and Wildlife Service in February 2011.

Roger Peters - Roger received a B.S. in biology from Seattle Pacific University, and an M.S. and Ph.D. in fisheries from the University of Washington. He has worked for the U.S. Fish and Wildlife Service for nearly 17 years, with a focus on evaluating habitat requirements of juvenile salmonids and the effectiveness of habitat restoration activities. Roger’s focus is on salmon and bull trout ecology studies.  He participates in the Fisheries Restoration Work Group and the Federal Workgroup of the Elwha River Ecosystem and Fisheries Restoration Project to identify salmonid restoration and monitoring strategies associated with removal of the Elwha River dams. Roger is a FWS-certified electrofisher and boat operator.

Dan Spencer - Dan assists with a number of field projects and is the outreach coordinator for the Fisheries Division. He is a significant contributor to the Elwha River fish weir, for example, and created the “Youth Fisheries Academy” day camps that were established in the summer of 2010. Dan has worked for the Fisheries Division of the Washington Fish and Wildlife Office since June 2009 and has worked for the U.S. Fish and Wildlife Service seasonally and year round since the summer of 1999. He received degrees in biology (emphasis in ecology) and secondary education from the University of Montana in 2001. An avid outdoorsman, Dan enjoys hiking, camping, telemark skiing, cross country skiing, rafting, nature photograph and is a former fly fishing guide (King Salmon Lodge in Bristol Bay, Alaska). He is also a musician, performing guitar, harmonica and vocals in a local acoustic roots band.

Roger Tabor - Roger has a B.S. in fishery biology from Colorado State University and an M.S. in fisheries and wildlife biology from Utah State University. He has worked for the U.S. Fish and Wildlife Service for the past 20 years. He is the lead biologist for several projects on the ecology of freshwater fishes, including anadromous salmonids. Over the past 16 years, he has worked primarily in the Lake Washington basin. Recent projects include movement patterns of Chinook salmon smolts, smallmouth bass, and northern pikeminnow; nearshore habitat use of juvenile Chinook salmon in lakes; predation of juvenile sockeye salmon and Chinook salmon by predatory fishes; and distribution, habitat use, and diet of freshwater sculpin.

Brad Thompson - Brad Thompson is the Fisheries Division Manager for the Washington Fish and Wildlife Office and Project Leader for the Western Washington Fisheries Resource Office. His primary role is to supervise the activities of the Fisheries Division and ensure U.S. Fish and Wildlife Service (FWS) Fisheries program delivery in western Washington by working with partner agencies to conserve aquatic trust resources. Brad provides technical guidance to the staff in the areas of: ecological modeling; fish population dynamics; fish recovery planning; design of monitoring and evaluation plans; evaluation of habitat restoration; artificial propagation projects; and ecosystem evaluations. Additionally, Brad represents the FWS on a number of science, technical, and policy forums including the Southern Panel of the Pacific Salmon Commission. Prior to his work with the FWS, Brad was a fisheries research scientist at the Washington Department of Fish and Wildlife and member of the Pacific Salmon Commission’s Chinook Technical Committee. Brad is originally from Park Ridge, IL, and received his B.S. in fisheries and wildlife from Michigan State University (1997), M.S. in wildlife and fisheries from Pennsylvania State University (1999), and Ph.D. in fisheries and wildlife from Michigan State University (2005). Outside of work, Brad enjoys fishing and outdoor recreation with his family and friends, as well as following MSU and Chicago’s professional sports teams.



Last updated: June 26, 2013
Washington Fish and Wildlife Office
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