This project used radiotelemetry methods to estimate the distribution and run timing of the Nushagak River Chinook and sockeye salmon escapements. We also used a combination of radiotelemetry and mark-recapture methods to estimate salmon abundance. Primary objectives of the 2006 Nushagak radiotelemetry study were to:
1) Identify the major spawning tributaries and estimate the proportion of spawning Chinook and sockeye salmon in each
2) Describe the stock-specific run-timing patterns for Chinook and sockeye salmon at the point of capture in the lower Nushagak River
3) Estimate the system-wide abundance of sockeye salmon returning to the Nushagak River and determine the precision of the estimate
A secondary objective of the study was to estimate the system-wide abundance of Chinook salmon returning to the Nushagak River using mark-recapture methods.
This project was operated by BBSRI in collaboration with LGL Alaska Research Associates, Inc.