IDFG phone survey estimates sport harvest in Estimates of natural population Reevaluate juvenile sampling design • • • recreational fisheries. incidental mortality from sport and verify age structure assumptions fishing for adult steelhead within population fisheries are imprecise. needed for productivity estimates. • boundaries permitted only in the mainstem Salmon Estimating adult steelhead Develop habitat and life model(s) to • • River. abundance cannot be done synthesize available data to extrapolate Annual parr density monitoring (surrogate for adults) accurately using traditional from index samples to an appropriate • conducted by IDFG within population. methods in high and turbid flows, population scale. INPMEP (BPA 199107300) $785K/yr. juvenile estimates are important as • a proxy for adult productivity. Population heavily influenced by • hatchery steelhead; hatchery fraction data are lacking. No traps. Dispersed PIT tagging Increased PIT tagging or roll up SARs Explore feasibility of sampling • • • • (Bargamin, Wind, to larger scale. smolts at LGR using GSI and (with Juvenile Chamberlain, WF Chamberlain). Explore alternative method of age analysis) for productivity and • productivity Imprecision of SARs at estimating SARs with precision. SAR. • population level. Limited snorkel surveys for juvenile abundance. No data on adult spawner Develop alternative methods to • • • distribution. estimate spatial distribution (e.g., fry Spatial distribution Inference of spawner distribution surveys, radio and acoustic tagging). • from parr is uncertain. No juvenile or adult life history data. Limited data except for genetic Collect juvenile and adult life history Implement a 5-year rotating panel • • • • 2000 ISMES has collected and processed DNA sampling of juveniles. data. for baseline genetic samples. • samples throughout the Clearwater and Salmon Representativeness of data from Genetic baseline needs to be • • basins. In 2007, 678 DNA samples were analyzed. other populations to this maintained at regular intervals. Species diversity population. Develop habitat and life history • model(s) to synthesize available data to extrapolate from index samples to an appropriate population scale.
• IDFG phone survey estimates sport harvest in recreational fisheries. • fishing for adult steelhead within population boundaries permitted only in the mainstem Salmon River. • Annual parr density monitoring (surrogate for adults) conducted by IDFG within population. • INPMEP (BPA 199107300) $785K/yr. • Estimates of natural population incidental mortality from sport fisheries are imprecise. • Estimating adult steelhead abundance cannot be done accurately using traditional methods in high and turbid flows, juvenile estimates are important as a proxy for adult productivity. • Population heavily influenced by hatchery steelhead; hatchery fraction data are lacking. • Reevaluate juvenile sampling design and verify age structure assumptions needed for productivity estimates. • Develop habitat and life model(s) to synthesize available data to extrapolate from index samples to an appropriate population scale. Juvenile productivity • No traps. • Dispersed PIT tagging (Bargamin, Wind, Chamberlain, WF Chamberlain). • Imprecision of SARs at population level. • Increased PIT tagging or roll up SARs to larger scale. • Explore alternative method of estimating SARs with precision. • Explore feasibility of sampling smolts at LGR using GSI and (with age analysis) for productivity and SAR. Spatial distribution • Limited snorkel surveys for juvenile abundance. • No data on adult spawner distribution. • Inference of spawner distribution from parr is uncertain. • Develop alternative methods to estimate spatial distribution (e.g., fry surveys, radio and acoustic tagging). Species diversity • No juvenile or adult life history data. • 2000 ISMES has collected and processed DNA samples throughout the Clearwater and Salmon basins. In 2007, 678 DNA samples were analyzed. • Limited data except for genetic sampling of juveniles. • Representativeness of data from other populations to this population. • Collect juvenile and adult life history data. • Genetic baseline needs to be maintained at regular intervals. • Develop habitat and life history model(s) to synthesize available data to extrapolate from index samples to an appropriate population scale. • Implement a 5-year rotating panel for baseline genetic samples.