Selecting a Stocking Metric for Setting SPZ Retention Limits

1. Selecting a Stocking Metric for Setting SPZ Retention Limits Western Mensurationists Mark Teply Cramer Fish Sciences June 2013 mark.teply@fishsciences.net 360.456.4621

2. Current Forest Practice Rules Leave 75 percent of the current shade over Class I streams.

3. Concern: Too Little Retention 2008 IDEQ Forest Practices Audit Maggie Industrial

4. Mission: Find Middle Ground

5. Challenge: Multiple Tensions Property Rights Economics Silviculture Aquatic Habitat

6. Challenge: Multiple Perceptions

7. Solution: Common Framework Stand Data Growth and Yield Models (FVS) Shade and LWD Models

8. Outcome: Rule Recommendation

9. Outcome: Rule Recommendation

10. Two Critical Components • Presentation Topics: • Selecting a metric • Use in implementation

11. Why Consider Stocking Shumar and de Varona (2009)

12. Selecting a Stocking Metric 1 – Stocking Table (e.g., as in current FPA rules) 2 – Summation form of Curtis’ RD

13. Basal Area v. Relative Density Unharvested Stands Central Idaho Grand Fir-Western Redcedar

14. Basal Area v. Relative Density Thin from Below Thin Uniformly Thin from Above CIGF0080CLWA1288 Central Idaho Grand Fir-Western Redcedar

15. Challenge: Standardizing RD Relative Stocking = Stand RD / Maximum RD

16. Implementation: “Tree Points”

17. Implementation: Calculator

18. Questions…