1. Pyramid Lake Paiute Tribe’s Physical Habitat/ Bioassessment Program on the Lower Truckee River Daniel Mosley Environmental Specialist Pyramid Lake Paiute Tribe

2. Map

3. Lower Truckee River within the Lower Truckee River within the Pyramid Lake Paiute Indian Reservation

4. Wet/ Dry Trends

5. Sensitive Taxa Cui-ui Cui-ui (Chasmistes cujus) Lahontan Cutthroat Trout (Clarki henshawi) (Clarki henshawi)

6. Tolerant Taxa

7. 2002 Analysis

8. PLPT BA Program n 15 years of data collected over a span of 20 years, 1981- 2000. n 2 collection methods –Surber sampler (1981 to 1999) –1 meter Kicknet (2 years, 1992-1993) –10 x18 inch Kicknet(2001 to present) –Differing number of replicates each year n 3 counting/identification methods –Estimated counts (2 years, 1992 & 1993) –Presence/Absence (2 years, 1994 & 1995) –Total counts 1981, 1996 to present)

9. Metric Selection n EDAS calculates ~70 metrics n To narrow focus on the most robust metrics, Tetra Tech decided to concentrate on those metrics that were identified from peer reviewed literature –14 metrics –Chapter 7, Table 7-1 n http://www.epa.gov/owow/monitoring/rbp/ch07b.html

10. RBP Recommended Metrics http://www.epa.gov/owow/monitoring/rbp/ch07b.html

11. The PLPT Biological Index consists of 4 core metrics: Taxonomic Richness Percent EPT Individuals Percent Tolerant Individuals Percent Dominant Taxon

12. Approx. Upstream Distance (miles) from MBD Station ID YearAverage 1981198919901996199920002001* 22.5I8063.639.343.647.051.248.9 20WB18.735.846.533.7 19AH47.051.249.1 17.5FJR52.825.159.451.247.1 14.5SS47.347.3 11.5NW38.980.859.9 10.5DO60.539.059.352.745.9*51.5 8CN34.250.551.745.547.9*45.9 6.5ND40.140.1 5LNX73.835.355.154.1*54.6 3.5NB28.363.345.8 2NIX71.045.457.650.1*56.1 0MBD58.216.344.745.525.638.1 Average59.227.745.251.347.350.751.247.5 *Only 2 of 6 sites for 2001 had been processed and ready for this analysis. BOLD sites are sites that will be part of the future sampling scheme.100-80Excellent69-60Good49-40Poor79-70 Very Good 59-50Fair39-0 Very Poor PLPT Biological Index Score and Narrative Rating PLPT Biological Index

13. Recommendations n Use a standard effort for collections –Equipment (Surber) –Replicates (3 reps) n Use a standard effort for identification –Total Counts or a standard subsample size n Having a standard number of organisms (e.g., 200 or 300) would allow for other types of analyses (e.g., RIVPACS) n Collect and record non-biological data –Physical Habitat assessments –Water Chemistry n Even just simple parameters would be good –pH, DO, Conductivity, & Temperature

14. Additional Analyses on the Truckee River - Nevada n BMI biological index development: Tetra Tech - Baltimore, MD (Michael Barbour, Eric Leppo) n Fish biological index development: Oregon State U. (Dr. Robert Hughes, and Thomas Whittier/ Gregg Lomnicky, Dynamac Corporation). n An algae IBI was developed by Desert Research Institute – Reno (Dr. Chris Fritzen and Clint Davis) n Habitat Index development: Tetra Tech - Baltimore, MD (Michael Barbour, Eric Leppo)

15. Physical Habitat/ Bioassessment Sampling Sites n Interstate 80 (I80) n Big Bend (BB) n Wadsworth Bridge (WB) n Abandoned House (AH) n S bar S Ranch (SS) n Dead Ox (DO) n Canyon (CN) n Little Nixon (LNX) n Nixon Bridge (NB) n Lower Nixon (NIX) n Marble Bluff Dam (MBD)

17. LTR Biotic index

18. Physical Habitat ≥ 90% = Comparable to reference 75-88% = Supporting 60-73% = Partially Supporting ≤ 58% = Non-supporting