Presentation Abstract
In 2013, King County initiated a long-term monitoring program of freshwater tissue contaminants in three major lakes (Lakes Sammamish, Washington, and Union) and two major rivers (Green and Cedar rivers). Tissue samples are collected from each waterbody every 5 years. Fillet and whole-body fish and invertebrate tissue chemistry data from this program are used to track changes over time associated with management actions, evaluate the risk of adverse effects to aquatic life, and inform human health risk evaluations of fish consumption. The first round of tissue monitoring from all three major lakes was completed in 2017. Species collected spanned a variety of trophic levels including small- and largemouth bass, cutthroat trout, northern pikeminnow, kokanee salmon, yellow perch, black crappie, peamouth, sculpins, largescale sucker and crayfish. Tissues were analyzed for mercury and other metals, PCBs, PBDEs and chlorinated pesticides. Persistent bioaccumulative toxic (PBT) concentrations tended to be highest in Lake Union, and lowest in Lake Sammamish. Given higher levels of some PBTs in recreationally important species in Lake Union compared to Lake Washington, these chemicals may pose risk to human health from consumption; there is a state-issued fish consumption advisory for PCBs on some Lake Washington fish species. DDT, DDE and DDD were frequently detected and at higher levels in Lake Union compared to fish tissues from the other two lakes. The presentation will summarize highlights from these data.
Session Title
Persistent Organic Pollutants and PAHs in Freshwater & Marine Fish
Keywords
PCBs, PBDEs, Mercury, DDT, Bioaccumulation
Conference Track
SSE3: Fate, Transport, and Toxicity of Chemicals
Conference Name
Salish Sea Ecosystem Conference (2018 : Seattle, Wash.)
Document Type
Event
SSEC Identifier
SSE3-614
Start Date
4-4-2018 3:45 PM
End Date
4-4-2018 4:00 PM
Type of Presentation
Oral
Genre/Form
presentations (communicative events)
Contributing Repository
Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.
Subjects – Topical (LCSH)
Biphenyl compounds--Bioaccumulation--Washington (State)--King County; Freshwater fishes--Effect of chemicals on--Washington (State)--King County
Geographic Coverage
King County (Wash.); Salish Sea (B.C. and Wash.)
Rights
This resource is displayed for educational purposes only and may be subject to U.S. and international copyright laws. For more information about rights or obtaining copies of this resource, please contact University Archives, Heritage Resources, Western Libraries, Western Washington University, Bellingham, WA 98225-9103, USA (360-650-7534; heritage.resources@wwu.edu) and refer to the collection name and identifier. Any materials cited must be attributed to the Salish Sea Ecosystem Conference Records, University Archives, Heritage Resources, Western Libraries, Western Washington University.
Type
Text
Language
English
Format
application/pdf
Included in
Fresh Water Studies Commons, Marine Biology Commons, Natural Resources and Conservation Commons, Terrestrial and Aquatic Ecology Commons
Persistent bioaccumulatives in freshwater fish of the Lake Washington watershed
In 2013, King County initiated a long-term monitoring program of freshwater tissue contaminants in three major lakes (Lakes Sammamish, Washington, and Union) and two major rivers (Green and Cedar rivers). Tissue samples are collected from each waterbody every 5 years. Fillet and whole-body fish and invertebrate tissue chemistry data from this program are used to track changes over time associated with management actions, evaluate the risk of adverse effects to aquatic life, and inform human health risk evaluations of fish consumption. The first round of tissue monitoring from all three major lakes was completed in 2017. Species collected spanned a variety of trophic levels including small- and largemouth bass, cutthroat trout, northern pikeminnow, kokanee salmon, yellow perch, black crappie, peamouth, sculpins, largescale sucker and crayfish. Tissues were analyzed for mercury and other metals, PCBs, PBDEs and chlorinated pesticides. Persistent bioaccumulative toxic (PBT) concentrations tended to be highest in Lake Union, and lowest in Lake Sammamish. Given higher levels of some PBTs in recreationally important species in Lake Union compared to Lake Washington, these chemicals may pose risk to human health from consumption; there is a state-issued fish consumption advisory for PCBs on some Lake Washington fish species. DDT, DDE and DDD were frequently detected and at higher levels in Lake Union compared to fish tissues from the other two lakes. The presentation will summarize highlights from these data.
