ISEMP/NPT installed PIT tag array in readers in EF • SF Salmon River. Hatchery smolts released in Johnson Creek for NPT Success of hatchery outplants into East Genotyping of all hatchery • • • supplementation program; Hatchery fish are not Fork near Stibnite needs to be evaluated spawners so PBT can used to adipose fin clipped but other mark (VIE/CWT) is used identify parr, smolts, and adults to identify. No sport fishing for Chinook salmon within • population boundaries is permitted. NPT and SBT monitor and estimate tribal harvest. • Adult productivity Sex ratio, hatchery proportion, length, percent • spawned, DNA, age structure are obtained from carcasses surveyed during NPT ground redd count surveys and from adults trapped at Johnson Creek weir..IDFG estimates age composition and origin at LGR (ESU level estimates, used when MPG/population data not available) NPT operates screw trap in Johnson Creek. Fish upstream of the trap may • • Juvenile migrant abundance estimated at screw not be representative of the entire • traps using mark recapture. population. Survival of juveniles to LGR estimated using PIT • tags Juvenile yield estimated for adults spawning upstream of • productivity Johnson Creek weir using screw trap data and downriver PIT-tag detections. IDFG fixed site snorkel surveys done 1980 2006. • – Transitioning to a rotating panel probabilistic GRTS design for assessing juvenile abundance. Spatial distribution Redd surveys done in both MaSA’s. • •
• ISEMP/NPT installed PIT tag array in readers in EF SF Salmon River. Adult productivity • Hatchery smolts released in Johnson Creek for NPT supplementation program; Hatchery fish are not adipose fin clipped but other mark (VIE/CWT) is used to identify. • No sport fishing for Chinook salmon within population boundaries is permitted. • NPT and SBT monitor and estimate tribal harvest. • Sex ratio, hatchery proportion, length, percent spawned, DNA, age structure are obtained from carcasses surveyed during NPT ground redd count surveys and from adults trapped at Johnson Creek weir..IDFG estimates age composition and origin at LGR (ESU level estimates, used when MPG/population data not available) • Success of hatchery outplants into East Fork near Stibnite needs to be evaluated • Genotyping of all hatchery spawners so PBT can used to identify parr, smolts, and adults Juvenile productivity • NPT operates screw trap in Johnson Creek. • Juvenile migrant abundance estimated at screw traps using mark recapture. • Survival of juveniles to LGR estimated using PIT tags • yield estimated for adults spawning upstream of Johnson Creek weir using screw trap data and downriver PIT-tag detections. • IDFG fixed site snorkel surveys done 1980 – 2006. Transitioning to a rotating panel probabilistic GRTS design for assessing juvenile abundance. • Fish upstream of the trap may not be representative of the entire population. Spatial distribution • Redd surveys done in both MaSA’s. •