One trap in Clear Creek (USFWS/NPT) operated Imprecision of SARs at • • 2-3 months mainly for Chinook. ISS trap planned to population level. cease operation in 2014. Determining is a is • “what PIT occurs throughout Potlatch drainage very important. What are the rates • using a variety of capture methods (IMW). Used for of residency? What proportion of juvenile survival and SARs. the fish captured and tagged at Juvenile migrant abundance estimated at all screw screw traps are smolts and/or • traps using mark recapture (IMW, ISS). actively migrating? Survival of juveniles (within basin and to LGR) No Trap CV estimates. • • estimated using PIT (IMW) estimated from scale analysis at all screw traps (IMW, ISMES). In 2007 IDFG adopted a rotating panel probabilistic • GRTS design for assessing the abundance of juvenile salmonids (INPMEP, BPA#1999107300), Potlatch done in 2008. NPT estimating juvenile density and distribution • using GRTS design in all tributaries except Potlatch and Clear Creek (BPA 200723300). Single year estimates. 2007 IDFG adopted a rotating probabilistic Adult spawner distribution limited Develop alternative methods to •In • • GRTS design for assessing juvenile abundance. to Potlatch. estimate spatial distribution (e.g., fry Potlatch done in 2008 but reducing scope in future. Inference of spawner distribution surveys, radio and acoustic tagging). • NPT estimating juvenile density and distribution from parr is uncertain. • Spatial distribution GRTS design in all tributaries except Potlatch and Extensive parr distribution data • Clear Creek. Single year estimates. for Potlatch River drainage from Juvenile distribution estimated in Lapwai, Big IDFG electrofishing surveys • Canyon, and Lawyers by NPT yearly. IMW Project, NOAA Funded Contract. •
• One trap in Clear Creek (USFWS/NPT) operated 2-3 months mainly for Chinook. ISS trap planned to cease operation in 2014. • PIT occurs throughout Potlatch drainage using a variety of capture methods (IMW). Used for juvenile survival and SARs. • Juvenile migrant abundance estimated at all screw traps using mark recapture (IMW, ISS). • Survival of juveniles (within basin and to LGR) estimated using PIT (IMW) estimated from scale analysis at all screw traps (IMW, ISMES). • In 2007 IDFG adopted a rotating panel probabilistic GRTS design for assessing the abundance of juvenile salmonids (INPMEP, BPA#1999107300), Potlatch done in 2008. • NPT estimating juvenile density and distribution using GRTS design in all tributaries except Potlatch and Clear Creek (BPA 200723300). Single year estimates. • Imprecision of SARs at population level. • Determining “what is a is very important. What are the rates of residency? What proportion of the fish captured and tagged at screw traps are smolts and/or actively migrating? • No Trap CV estimates. Spatial distribution •In 2007 IDFG adopted a rotating probabilistic GRTS design for assessing juvenile abundance. Potlatch done in 2008 but reducing scope in future. • NPT estimating juvenile density and distribution GRTS design in all tributaries except Potlatch and Clear Creek. Single year estimates. • Juvenile distribution estimated in Lapwai, Big Canyon, and Lawyers by NPT yearly. • IMW Project, NOAA Funded Contract. • Adult spawner distribution limited to Potlatch. • Inference of spawner distribution from parr is uncertain. • Extensive parr distribution data for Potlatch River drainage from IDFG electrofishing surveys • Develop alternative methods to estimate spatial distribution (e.g., fry surveys, radio and acoustic tagging).