Theresa "Marty" Liedtke
Marty Liedtke is a Project Leader at the Columbia River Research Laboratory with 25+ years of experience focused on movement, behavior, and performance of fishes in both freshwater and marine systems.
My research is currently focused on Pacific Lamprey and other native lampreys in the Columbia River Basin and forage fishes in Puget Sound. My team evaluates juvenile and larval lamprey performance under controlled laboratory conditions to address management needs such as dewatering of lamprey habitat, interactions with screens at water diversions, and dredging impacts. A newly developed, prototype acoustic telemetry transmitter, designed for use in lamprey and eels allowed us to conduct one of the first acoustic telemetry studies of juvenile Pacific lamprey migration movements. Prior to the development of this transmitter such studies were not possible due to the small size of these fish. In Puget Sound we have focused on Pacific sand lance and surf smelt and have evaluated spawning site selection, responses to climate change, food habits, and rearing habitats. Most recently we are investigating linkages between forage fishes and legacy and current use contaminants in both field and laboratory settings.
Historically my team has conducted radio and acoustic telemetry studies to evaluate juvenile salmon passage and survival at hydroelectric dams in the Columbia River Basin. We have used telemetry to monitor the behavior and movements of many fishes, including adult salmonids using transmitters with sensors (temperature, motion). I have developed standard operating procedures for surgical implantation of transmitters and regularly train others to design tagging operations and conduct tagging for telemetry studies. I am interested in the performance of fish equipped with telemetry transmitters, specifically comparing the stress response, swimming performance, buoyancy compensation, and predator avoidance ability of tagged fish to untagged fish.
Professional Experience
1994 to Present - Research Fish Biologist, U.S. Geological Survey, Western Fisheries Research Center, Columbia River Research Laboratory, Cook, WA
Education and Certifications
M.S. Zoology/Marine Biology, University of Hawaii, Honolulu, HI
B.S. Biology, Illinois State University, Normal, IL
Science and Products
2011 Georgiana Slough non-physical barrier performance evaluation project report
Techniques for telemetry transmitter attachment and evaluation of transmitter effects on fish performance: Chapter 4
Western Fisheries Research Center--Forage fish studies in Puget Sound
Behavior and passage of juvenile salmonids during the evaluation of a behavioral guidance structure at Cowlitz Falls Dam, Washington, 2011
Techniques for telemetry transmitter attachment and evaluation of transmitter effects on fish performance
Hydrography of and biogeochemical inputs to Liberty Bay, a small urban embayment in Puget Sound, Washington
Evaluation of angler effort and harvest of rainbow trout (Oncorhynchus mykiss), Lake Scanewa, Washington, 2010
Behavior and movement of formerly landlocked juvenile coho salmon after release into the free-flowing Cowlitz River, Washington
Juvenile salmonid collection efforts in the Upper Cowlitz River Basin
Juvenile Salmonid survival, passage, and egress at McNary Dam during tests of temporary spillway weirs, 2009
Evaluation of strobe lights to reduce turbine entrainment of juvenile steelhead (Oncorhynchus mykiss) at Cowlitz Falls Dam, Washington
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
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2011 Georgiana Slough non-physical barrier performance evaluation project report
The Sacramento River and its tributaries support populations of anadromous fish species including winter-run, spring-run, fall-run, and late fall–run Chinook salmon (Oncorhynchus tshawytscha); and steelhead (O. mykiss). Several of these species are listed as threatened or endangered under the California Endangered Species Act (CESA), federal Endangered Species Act (ESA), or both. These species spaAuthorsRyan R. Reeves, Jacob McQuirk, Khalid Ameri, Russell W. Perry, Jason G. Romine, Theresa L. Liedtke, Jon R. Burau, Aaron R. Blake, Chris Fitzer, Natalie Smith, Steve Pagliughi, Sam Johnston, Kevin Kumagai, Kenneth CashTechniques for telemetry transmitter attachment and evaluation of transmitter effects on fish performance: Chapter 4
One assumption of nearly every biotelemetry study is that the tagged animals are representative of the untagged population. That is, that the processes by which study animals are captured, handled, and tagged, as well as the act of carrying a transmitter, will have minimal effect on their behavior and performance. This assumption, commonly stated as a lack of transmitter effects, must be valid ifAuthorsTheresa L. Liedtke, A. Michelle Wargo RubWestern Fisheries Research Center--Forage fish studies in Puget Sound
Researchers at the Western Fisheries Research Center are working with other U.S. Geological Survey (USGS) Centers to better understand the interconnected roles of forage fishes throughout the ecosystem of Puget Sound, Washington. Support for these studies primarily is from the USGS Coastal Habitats in Puget Sound (CHIPS) program, which supports studies of the nearshore areas of Puget Sound. HumanAuthorsTheresa L. LiedtkeBehavior and passage of juvenile salmonids during the evaluation of a behavioral guidance structure at Cowlitz Falls Dam, Washington, 2011
Executive Summary A radiotelemetry evaluation was conducted during April–October 2011 to describe movement patterns, forebay behavior, and passage of juvenile steelhead, coho salmon, and Chinook salmon at Cowlitz Falls Dam, Washington. The primary focus of the study was to describe fish behavior near a behavioral guidance structure (BGS) and floating surface collector (FSC) deployed upstream of CoAuthorsTobias J. Kock, Theresa L. Liedtke, Brian K. Ekstrom, Ryan G. Tomka, Dennis W. RondorfTechniques for telemetry transmitter attachment and evaluation of transmitter effects on fish performance
No abstract available.AuthorsTheresa L. Liedtke, Wargo RubHydrography of and biogeochemical inputs to Liberty Bay, a small urban embayment in Puget Sound, Washington
This multi-chapter report describes scientific and logistic understanding gained from a 2 year proof-of-concept study in Liberty Bay, a small urban embayment in central Puget Sound, Washington. The introductory chapter describes the regional and local setting, the high-level study goals, the site-specific urban stressors, and the interdisciplinary study approach. Subsequent data chapters describeAuthorsRenee K. TakesueEvaluation of angler effort and harvest of rainbow trout (Oncorhynchus mykiss), Lake Scanewa, Washington, 2010
A creel evaluation was conducted in Lake Scanewa, a reservoir on the Cowlitz River, to monitor catch rates of rainbow trout (Oncorhynchus mykiss) and determine if the trout fishery was having negative impacts on juvenile anadromous salmon (Oncorhynchus spp.) in the system. The trout fishery, which is supported by releases of 20,000 fish (2 fish per pound) per year from June to August, was developeAuthorsTheresa L. Liedtke, Tobias J. Kock, Brian K. Ekstrom, Ryan G. Tomka, Dennis W. RondorfBehavior and movement of formerly landlocked juvenile coho salmon after release into the free-flowing Cowlitz River, Washington
Formerly landlocked Coho Salmon (Oncorhynchus kisutch) juveniles (age 2) were monitored following release into the free-flowing Cowlitz River to determine if they remained in the river or resumed seaward migration. Juvenile Coho Salmon were tagged with a radio transmitter (30 fish) or Floy tag (1050 fish) and their behavior was monitored in the lower Cowlitz River. We found that 97% of the radio-tAuthorsTobias J. Kock, Julie A. Henning, Theresa L. Liedtke, Ida M. Royer, Brian K. Ekstrom, Dennis W. RondorfJuvenile salmonid collection efforts in the Upper Cowlitz River Basin
n/aAuthorsT.L. Liedtke, T.J. Kock, B.K. Ekstrom, I.M. Royer, D.W. RondorfJuvenile Salmonid survival, passage, and egress at McNary Dam during tests of temporary spillway weirs, 2009
We evaluated behavior, passage, and survival of juvenile salmonids at McNary Dam in relation to the temporary spillway weirs (TSWs) using acoustic telemetry during 2009. The TSWs were located in spill bays 4 and 20 during spring and in spill bays 19 and 20 during summer. Our objectives were to assess the performance of the TSWs as a fish passage alternative. We also examined how tailrace conditionAuthorsN.S. Adams, T.L. LiedtkeEvaluation of strobe lights to reduce turbine entrainment of juvenile steelhead (Oncorhynchus mykiss) at Cowlitz Falls Dam, Washington
We conducted a radiotelemetry evaluation to determine if strobe lights could be used to decrease turbine entrainment of juvenile steelhead (Oncorhynchus mykiss) at Cowlitz Falls Dam, Washington. We found that radio-tagged juvenile steelhead approached and entered two spillbays (one lighted, one unlighted) in equal proportions. However, the presence of strobe lights was associated with decreased spAuthorsTobias J. Kock, Scott D. Evans, Theresa L. Liedtke, Dennis W. Rondorf, Mike KohnNon-USGS Publications**
Allen, B., T.L. Liedtke, A. Daniel, J. Begala, M. Salway, and J. Beeman. 2001. Monitoring tailrace egress in the stilling basin, the ice-trash sluiceway, and the powerhouse of The Dalles Dam, 2000. U.S. Army Corps of Engineers, Portland, OR. Contract No. W66QKZ00391996Duran, I.N., T.L. Liedtke, and J.H. Petersen. 2002. Predator-prey interactions in The Dalles Dam tailrace. U.S. Army Corps of Engineers, Portland, OR.Smith, C.D., T.L. Liedtke, B.J. Hausmann, J.L. Schei, J.R. Lyng, L.P. Gee, and J.W. Beeman. 2004. Tailrace Egress of yearling and subyearling Chinook salmon and juvenile steelhead following juvenile bypass system passage at John Day Dam, 2002. U.S. Army Corps of Engineers, Portland District, Portland, OR.**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
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