Adult age and diversity data from IDFG carcass Genetic baseline needs to be Implement a 5-year rotating • • • surveys in mainstem Salmon River since 2000, maintained at regular intervals. for baseline genetic samples. Species diversity INPMEP. SBT propose to collect DNA from • harvested adults. Upper Salmon River Upper Mainstem (above Redfish Lake) Population Weir located on Salmon River at Sawtooth Hatchery Weir provides unbiased high Improved estimation of hatchery and Effectiveness monitoring is • • • • captures 100% of salmon bound for the spawning precision estimates of adult wild origin adults spawning between needed for the US v Oregon areas upstream. Data available since 1985. spawner abundance upstream of Redfish Lake Creek and the Sawtooth supplementation activities. IDFG does aerial index redd counts in Salmon River. Sawtooth Hatchery. However, weir. • Data available since 1954. there is a lot of spawning between IDFG conducted multi pass carcass collections in Redfish Lake Creek and the weir. • Adult abundance Salmon River for ISS through 2012. This is a Accuracy of GSI to identify this • treatment stream for the ISS study. population needs to be Natural-origin Snake River Chinook abundance determined. • estimated at LGR by IDFG using GSI beginning 2008. Age composition and sex ratios also determined Hatchery smolts released from Sawtooth Hatchery • for harvest augmentation. PNOS = 0.75 PNI =0.4 Data quality and quantity is very Improved estimation of hatchery and • • • Sex ratio, hatchery proportion, length, percent good for this population. wild origin adults spawning between • spawned, DNA, age structure are obtained from Redfish Lake and the Sawtooth carcasses surveyed during IDFG ground redd count weir. surveys and from adults trapped at Sawtooth weir productivity Recreational fishing for Chinook salmon was allowed • in 2008 (and proposed for 2009) in mainstem Salmon River downstream of Sawtooth Hatchery. No fishing for Chinook salmon was allowed from 1980 2007. – SBT monitors and estimates Tribal harvest (hatchery • and wild).
Species diversity • Adult age and diversity data from IDFG carcass surveys in mainstem Salmon River since 2000, INPMEP. • Genetic baseline needs to be maintained at regular intervals. • Implement a 5-year rotating for baseline genetic samples. • SBT propose to collect DNA from harvested adults. Upper Salmon River Upper Mainstem (above Redfish Lake) Population Adult abundance • Weir located on Salmon River at Sawtooth Hatchery captures 100% of salmon bound for the spawning areas upstream. Data available since 1985. • IDFG does aerial index redd counts in Salmon River. Data available since 1954. • IDFG conducted multi pass carcass collections in Salmon River for ISS through 2012. This is a treatment stream for the ISS study. • Natural-origin Snake River Chinook abundance estimated at LGR by IDFG using GSI beginning 2008. Age composition and sex ratios also determined • Hatchery smolts released from Sawtooth Hatchery for harvest augmentation. • Weir provides unbiased high precision estimates of adult spawner abundance upstream of Sawtooth Hatchery. However, there is a lot of spawning between Redfish Lake Creek and the weir. • Accuracy of GSI to identify this population needs to be determined. • Improved estimation of hatchery and wild origin adults spawning between Redfish Lake Creek and the Sawtooth weir. • Effectiveness monitoring is needed for the US v Oregon supplementation activities. productivity • PNOS = 0.75 PNI =0.4 • Sex ratio, hatchery proportion, length, percent spawned, DNA, age structure are obtained from carcasses surveyed during IDFG ground redd count surveys and from adults trapped at Sawtooth weir • Recreational fishing for Chinook salmon was allowed in 2008 (and proposed for 2009) in mainstem Salmon River downstream of Sawtooth Hatchery. No fishing for Chinook salmon was allowed from 1980 – 2007. • SBT monitors and estimates Tribal harvest (hatchery and wild). • Data quality and quantity is very good for this population. • Improved estimation of hatchery and wild origin adults spawning between Redfish Lake and the Sawtooth weir.
chapters_7-9_idaho_mu_plan_november_2015.docx