U.S. EPA Webinar: Predicting Harmful Algal Blooms and Toxins in Lakes of the Conterminous United States

 

Fish Monitoring Work Group - PIT Tag Data & Analysis 2025 Webinar Series

Washington's Fish Hatchery and Rearing Areas (2023) (~6.5Mb)

I came across an interesting map of Washington state’s fish hatchery and rearing facilities during the course of taking the Pacific Northwest Aquatic Monitoring Partnership’s PIT Tag Data & Analysis 2025 Webinar Series.

Software tools for managing the massive and complex amount of data produced by PIT-tag arrays in the Columbia River Basin of salmon and steelhead have been developed to allow researchers to access the accumulated data on nearly 53 million PIT-tagged fish since 1987. The PTAGIS database containing the results of over 267 million detection events from the 283 interrogation sites across the Columbia River Basin, with 842,171 unique fish were detected in 2021 alone.

PTAGIS is continuously updated with data contributions from around 40 different organizations and includes detailed records of fish tagging events, detection, recaptures, and recoveries. In 2021 the system processed 820,000 data files, inserting or updating 26 million records. Included are individual tag histories, detection timestamps, location metadata, and biological data such as species, length, and origin.

The Columbia Basin PIT Tag Information System (PTAGIS) operated a network of 283 interrogation sites across the Columbia River Basin.

Information about the webinar series can be found at Fish Monitoring Work Group – PIT Tag Data & Analysis 2025 Webinar Series. There is no charge to register and recordings of the sessions are available.

A disclosure, I now use “Synthia” my OpenAi bot to develop much of the content for my website.

Little Red Fish Found: New Insights on the Mysterious Snerka Salmon

McMenamins History Pub

McMenamins Anderson School - Haynes' Hall
18607 Bothell Way NE, Bothell, Washington 98011 

GPS / Google Maps 47.763352231100995, -122.20851741939805

Little Red Fish Found: New Insights on the Mysterious Snerka Salmon
Presented by Dr. Jeff Jensen

Tuesday, 24 September 2024 @ 6p

6pm doors, 7pm program / $5 / All ages welcome

Little Red Fish Found: New Insights on the Mysterious Snerka Salmon

Kokanee salmon, also known as little red fish, once filled the tributaries of Lake Washington and the Sammamish River every fall. After a century of logging, coal mining, replumbing of Lake Washington, dredging of the Sammamish River, urbanization, and the introduction of dozens of non-native predators and competitors, the so-called "Middle Run Kokanee" of Lake Washington was generally thought to have been eliminated by the end of the 20th century. But were they?

Tantalizing clues of a remaining population of native kokanee emerge from time to time, but the native origins of the fish have been clouded by the introduction of millions of non-native kokanee and sockeye salmon. Because of their uncertain origins, small Oncorhynchus nerka (the scientific name for sockeye and kokanee) are sometimes called "snerka" or mystery nerka.

Could native kokanee in Lake Washington possibly have survived the past 120 years? Jeff Jensen reviews the complex history of kokanee in Lake Washington and will share up-to-date information on fate of the little red fish based on new understandings of genetics, life history, behavior, and migration in the basin. Jeff also highlights the role of citizen scientists and opportunities for collaboration on future restoration efforts within the Bothell community. Spoiler alert: the news is good!

Dr. Jeff Jensen grew up in Bothell and Kirkland with a deep appreciation for nature. He has a bachelor's degree in fisheries and zoology from the University of Washington, Seattle. While at UW, Jeff combined his interests in ichthyology and evolutionary biology and earned a Ph.D. in evolutionary biology from Harvard University. He spent summers researching in the San Juan Islands and was a faculty member in the biology department at University of Maryland, College Park. Jeff currently teaches at the School of Science, Technology, Engineering, and Mathematics at the University of Washington, Bothell.

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