Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.

Nisqually chinook natural production

1 395 vues

Publié le

  • Soyez le premier à commenter

  • Soyez le premier à aimer ceci

Nisqually chinook natural production

  1. 1. Nisqually Chinook Natural Production Sayre Hodgson Nisqually Wildlife Refuge February 8, 2011
  2. 2. Outline <ul><li>M&E is needed to test our assumptions within the plan and to identify changes to our action plan if needed. </li></ul><ul><li>We’re farther along on our habitat actions than the other H’s so our evaluation so far is focused on the habitat monitoring and establishing baseline. </li></ul><ul><li>Focus on natural production of existing population, importance of the estuary, monitoring baseline, and gaps we need to fill in. </li></ul>
  3. 3. Nisqually Natural Origin Run Size Modeled Frequencies
  4. 4. Escapement/ Spawner Distribution, Abundance, and Composition
  5. 5. Adult Abundance: Recent Chinook Escapement Estimates
  6. 6. Composition: Otolith Analysis of 120 adult Chinook (BY ’03) that Appeared to be of Natural Origin Data provided by Angie Lind-Null, USGS
  7. 7.
  8. 8. Distribution: EDT Model Estimates of Spawner Distribution <ul><li>Historical Condition Current Condition </li></ul>
  9. 9. Juvenile Monitoring
  10. 10. WDFW Outmigrant Trap Installed 2009 above Centralia City Light Powerhouse (RM 12.7)
  11. 11. Juvenile Timing at WDFW trap in 2009 Data provided by Matthew Klungle, WDFW
  12. 12. Abundance Estimates from trap Data provided by Matthew Klungle, WDFW Age 2009 2010 0+ 418,086 130,846 1+ 14,371 14,925 TOTAL 432,457 145,771
  13. 13. Juvenile Productivity
  14. 14. Natural Origin Fish were an Estimated 3-10% of the Outmigration in 2009-10
  15. 15. 3% Natural Composition Estimate for 2010 Compared to Beach Seine Data
  16. 16. Beach Seine Composition Data for all Years Combined (2002-2010)
  17. 17. Estuary and Nearshore Relative Abundance, Distribution and Timing: 2002-2010 Beach Seine Sampling by NIT/NNWR/SPSSEG
  18. 28. Unmarked Juvenile Chinook Distribution/ Timing Beach Seine 2002-10
  19. 29. Unmarked Chinook Hatchery Chinook
  20. 30. Unmarked Chinook Length Distribution
  21. 31. Survival of Different Outmigrant Types: Data from returning adults <ul><li>WDFW Scale Analysis: Few yearling outmigrants survive to return. Most surviving returns were 0+ outmigrants. </li></ul><ul><li>USGS Otolith Analysis: All brood year 2003 unmarked (n=110) and marked (n=104) adult returns were delta residents. There was no indication of surviving fry, parr migrant, or yearling life history types. </li></ul>
  22. 32. Chinook Timing at WDFW trap in 2009 Data provided by Matthew Klungle, WDFW
  23. 33. Juvenile Chinook Population Baseline Estuary Growth, Residency, and Life History Diversity <ul><li>(work conducted by Kim Larsen and Angie Lind-Null, USGS) </li></ul><ul><li>Naturally Spawned Chinook </li></ul><ul><li>Average Growth: 0.57 mm/day </li></ul><ul><li>Average Estuary Residency: </li></ul><ul><li>16 days, range 10 – 35 days </li></ul><ul><li>Delta Check (DC) observed </li></ul><ul><li>in late May-early June </li></ul><ul><li>Hatchery Chinook </li></ul><ul><li>Average Growth: 0.59 mm/day </li></ul><ul><li>Average Estuary Residency: </li></ul><ul><li>9 days, range 4 – 20 days </li></ul><ul><li>DC observed mid to late May </li></ul>Angie Lind-Null & Kim Larsen, USGS DC
  24. 34. Puget Sound Nearshore
  25. 35. Beach Seining Results 2002-2008
  26. 36. Nisqually Origin CWT Juvenile Recoveries
  27. 37. Adult Return Timing
  28. 38. <ul><li>Adult Return Timing: Tribal Catch </li></ul>
  29. 39. Spawning Timing <ul><li>Mainstem, Mashel, and Ohop surveyed regularly </li></ul><ul><li>Spawning is roughly from September to November </li></ul><ul><li>Spawning peaks around early October in the mainstem and later October in the Mashel River </li></ul>
  30. 40. Monitoring & Evaluation: Critical to testing our assumptions and tracking the effects of our actions into the future Adaptive Management Cycle <ul><li>Recovery Plan Development </li></ul><ul><li>Population Goal and Problem Statement </li></ul><ul><li>Scientific Framework </li></ul><ul><li>Goals and Objectives </li></ul><ul><li>Prioritized Actions </li></ul><ul><li>Habitat Action Plan </li></ul><ul><li>Harvest Action Plan </li></ul><ul><li>Hatchery Action Plan </li></ul><ul><li>M&E Action Plan </li></ul>Monitor Action Plans and Stock Status Evaluate Monitoring Data and Stock Status <ul><li>Plan Update: </li></ul><ul><li>Problem Statement </li></ul><ul><li>Goals and Objectives </li></ul><ul><li>Scientific Framework </li></ul><ul><li>Action Plans </li></ul>
  31. 41. Partial List of Current Monitoring and New Monitoring Needs: <ul><li>Existing Measures: </li></ul><ul><ul><li>Spawners: #, Timing, Distribution, Composition (PHOS) </li></ul></ul><ul><ul><li>Juveniles: </li></ul></ul><ul><ul><ul><li>Trap #, timing, size </li></ul></ul></ul><ul><ul><ul><li>Estuary relative abundance, timing, distribution, size, habitat use, growth and residence time </li></ul></ul></ul><ul><ul><ul><li>Catch: #, composition </li></ul></ul></ul><ul><li>New Measures: </li></ul><ul><ul><li>Escapement: </li></ul></ul><ul><ul><ul><li>Weir will give better numbers </li></ul></ul></ul><ul><ul><ul><li>Weir efficiency and better distribution information </li></ul></ul></ul><ul><ul><ul><li>Track spawning below the weir </li></ul></ul></ul><ul><ul><ul><li>Gaps to be filled by other measure s to be developed through adaptive management process </li></ul></ul></ul>
  32. 42. Monitoring and Evaluation <ul><li>Evaluating M&E needs on an annual basis including ways to improve accuracy on existing data collection. </li></ul><ul><li>Analyzing the data on an annual basis to evaluate key assumptions in the plan and our progress towards goals. </li></ul><ul><li>These activities will be linked to viable salmonid population (VSP) criteria being developed for Puget Sound populations. </li></ul>
  33. 43. Questions?