For more information on species & ecosystem science:

Wildlife Science
360-902-2515
wildthing@dfw.wa.gov

Fish Science
360-902-2700
fishpgm@dfw.wa.gov

Habitat Science
360-902-2534
habitatprogram@dfw.wa.gov

 

Research Methods for Salmon Abundance Estimation

Juvenile Trap Design: Gear Types
Click on images below for more information

Partial Capture Full Capture  

Considerations before selecting gear type:

Target species: adult escapement, juvenile life history, in river migration patterns

Drainage characteristics: river size, flow variability, debris loads

Study objectives: run timing, index of abundance, estimate abundance, hatchery evaluation, fresh water survival

Specific trap location: proximity to hatchery release sites, trap security and access, anchoring points, recreational river traffic