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Mapping Aquatic Biodiversity in Washington using Environmental DNA
Wednesday May 20, 2026 11:30am - 12:00pm PDT
409
The Washington Department of Fish and Wildlife’s Aquatic Biodiversity Study, led by the Native Aquatic Species Unit, documents species presence across Washington’s river systems using environmental DNA (eDNA). eDNA sampling identifies organisms by collecting genetic material shed into the environment, without the need for direct observation or capture. Samples are analyzed using a DNA sequencing method called metabarcoding, which allows detection of multiple identifiable species from a single sample. Results from this work are compiled and presented through an ArcGIS Online Web Experience. The interactive map displays detections of genetic material from a subset of freshwater fish, shellfish, and crayfish species across the state. Data is aggregated and displayed at the HUC12 watershed scale, providing a consistent spatial framework for viewing species distributions and biodiversity patterns.

This presentation includes a preview of the application prior to public release. Sampling is ongoing statewide, and the dataset will continue to expand over time. The Aquatic Biodiversity Map is designed to support resource management, planning, and public access to eDNA datasets.
Speakers
avatar for Allison Ying

Allison Ying

Application Developer, Washington Department of Fish and Wildlife
Allison Ying (she/her) is an Application Developer at the Washington Department of Fish and Wildlife. She works with the Inland Fish Unit, building new data tools for freshwater species management and conservation efforts. She started with the Native Aquatic Species Unit, where she... Read More →
Wednesday May 20, 2026 11:30am - 12:00pm PDT
409
  Mapping to the Future, Environment

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