Nisqually Chinook Recovery  Plan Annual Review Nisqually Wildlife Refuge February 8, 2011
Introduction: <ul><li>Craig Smith! </li></ul><ul><li>Nisqually Harvest Program Manager </li></ul><ul><li>Nisqually Chinook...
Definitions: <ul><li>HORs  – Hatchery Origin Recruits or fish of hatchery origin. </li></ul><ul><li>NORs - Natural Origin ...
 
Session 1 <ul><li>Past Trends </li></ul><ul><li>Run size and Composition </li></ul><ul><ul><ul><li>Hatchery Origin Recruit...
Past Trends : <ul><li>Run size and Composition (NORs and HORs) </li></ul><ul><li>The last 7 year average hatchery run size...
 
Treaty Catch and Extreme Terminal Run Size <ul><li>Since 2001, the Chinook total run size back to the Nisqually river has ...
 
Terminal Catch and Composition  <ul><li>Recent 7 year average Treaty hatchery fish commercially harvested was just under 1...
Sport Not included in 2010
Spawning Ground Escapement and  Composition <ul><li>Recent 7 year average escapement to the spawning grounds:  ~2,200  </l...
 
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Nisqually chinook status and trends

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Nisqually chinook status and trends

  1. 1. Nisqually Chinook Recovery Plan Annual Review Nisqually Wildlife Refuge February 8, 2011
  2. 2. Introduction: <ul><li>Craig Smith! </li></ul><ul><li>Nisqually Harvest Program Manager </li></ul><ul><li>Nisqually Chinook </li></ul><ul><li>STATUS AND TRENDS SESSION 1 </li></ul>
  3. 3. Definitions: <ul><li>HORs – Hatchery Origin Recruits or fish of hatchery origin. </li></ul><ul><li>NORs - Natural Origin Recruits or fish of natural spawned origin (natural). </li></ul><ul><li>Marked - A hatchery fish that has the adipose fin clipped. </li></ul><ul><li>Unmarked - A hatchery fish without the adipose fin clipped OR a natural fish </li></ul><ul><li>Exploitation Rate -Total mortality in a fishery or aggregate of fisheries divided by the sum of total fishing and natural mortality plus escapement. </li></ul><ul><li>Harvest Rate - Total fishing mortality, in some cases of a specific stock divided by the abundance in a given fishing area at the start of a time period. </li></ul><ul><li>Rebuilding Exploitation Rate - The impact of harvest that will not significantly impede the opportunity for the population to grow towards the recovery goal . </li></ul><ul><li>Extreme Terminal Run Size - The number of fish returning to a specific place or river. </li></ul><ul><li>Escapement - The fish that escape all fisheries to their respective spawning area such as the hatchery or the natural spawning grounds. </li></ul>
  4. 5. Session 1 <ul><li>Past Trends </li></ul><ul><li>Run size and Composition </li></ul><ul><ul><ul><li>Hatchery Origin Recruits and Natural Origin Recruits will be referred to as HORs and NORs, respectively </li></ul></ul></ul><ul><li>Terminal Catch and Composition </li></ul><ul><li>Escapement and Composition </li></ul>
  5. 6. Past Trends : <ul><li>Run size and Composition (NORs and HORs) </li></ul><ul><li>The last 7 year average hatchery run size is 29,412 to the river (95%). </li></ul><ul><li>The last 7 year average natural run size is 1,614 to the river (5%). </li></ul><ul><li>Total hatchery and natural run size of 31,026. </li></ul>
  6. 8. Treaty Catch and Extreme Terminal Run Size <ul><li>Since 2001, the Chinook total run size back to the Nisqually river has ranged from 26,000- 42,000. </li></ul><ul><li>Since 2001, Nisqually treaty harvest rate has averaged 60% which has yielded between 11,000-23,000 Chinook. </li></ul>
  7. 10. Terminal Catch and Composition <ul><li>Recent 7 year average Treaty hatchery fish commercially harvested was just under 16,000 fish per year. </li></ul><ul><li>Recent 7 year average Treaty natural fish commercially harvested was 980: </li></ul><ul><ul><li>roughly 5% of the catch </li></ul></ul><ul><li>7 year average sport harvest not including 2010 is ~1,500. </li></ul>
  8. 11. Sport Not included in 2010
  9. 12. Spawning Ground Escapement and Composition <ul><li>Recent 7 year average escapement to the spawning grounds: ~2,200 </li></ul><ul><li>~1,600 hatchery strays </li></ul><ul><ul><li>73% HORs on the spawning grounds </li></ul></ul><ul><ul><li>Recovery plan goal is 10% </li></ul></ul><ul><li>~600 natural Chinook </li></ul><ul><ul><li>27% NORs on spawning grounds </li></ul></ul><ul><ul><li>Recovery plan goal is 90% NORs </li></ul></ul>
  10. 14. ?????????????Questions???????????
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