Pyramid Lake Paiute Tribe’s Pyramid Lake Paiute Tribe’s Physical Habitat/ Physical Habitat/ Bioassessment Program on Bioassessment Program on the Lower Truckee River the Lower Truckee River Daniel Mosley Environmental Specialist Pyramid Lake Paiute Tribe
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Pyramid Lake Paiute Tribe’s Physical Habitat/ Bioassessment Program on the Lower Truckee River
Pyramid Lake Paiute Tribe’s Physical Habitat/ Bioassessment Program on the Lower Truckee River. Daniel Mosley Environmental Specialist Pyramid Lake Paiute Tribe. Map. Lower Truckee River within the Pyramid Lake Paiute Indian Reservation. Wet/ Dry Trends. Sensitive Taxa. - PowerPoint PPT Presentation
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Pyramid Lake Paiute Tribe’s Pyramid Lake Paiute Tribe’s Physical Habitat/ Bioassessment Physical Habitat/ Bioassessment Program on the Lower Truckee Program on the Lower Truckee
RiverRiver
Daniel MosleyEnvironmental Specialist
Pyramid Lake Paiute Tribe
MapMap
Lower Truckee River within the Lower Truckee River within the Pyramid Lake Paiute Indian ReservationPyramid Lake Paiute Indian Reservation
Wet/ Dry TrendsWet/ Dry Trends
Benthic Macroinvertebrate Taxa Response Wet/ Dry Years
15 years of data collected over a span of 20 years, 1981-15 years of data collected over a span of 20 years, 1981-2000.2000.
2 collection methods2 collection methods– Surber sampler (1981 to 1999)Surber sampler (1981 to 1999)– 1 meter Kicknet (2 years, 1992-1993)1 meter Kicknet (2 years, 1992-1993)– 10 x18 inch Kicknet(2001 to present)10 x18 inch Kicknet(2001 to present)– Differing number of replicates each yearDiffering number of replicates each year
3 counting/identification methods3 counting/identification methods– Estimated counts (2 years, 1992 & 1993)Estimated counts (2 years, 1992 & 1993)– Presence/Absence (2 years, 1994 & 1995)Presence/Absence (2 years, 1994 & 1995)– Total counts 1981, 1996 to present)Total counts 1981, 1996 to present)
Metric SelectionMetric Selection
EDAS calculates ~70 metricsEDAS calculates ~70 metrics To narrow focus on the most robust To narrow focus on the most robust
metrics, Tetra Tech decided to metrics, Tetra Tech decided to concentrate on those metrics that concentrate on those metrics that were identified from peer reviewed were identified from peer reviewed literatureliterature– 14 metrics14 metrics– Chapter 7, Table 7-1Chapter 7, Table 7-1
AverageAverage 59.259.2 27.727.7 45.245.2 51.351.3 47.347.3 50.750.7 51.251.2 47.547.5*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.
Use a standard effort for identificationUse a standard effort for identification– Total Counts or a standard subsample sizeTotal Counts or a standard subsample size
Having a standard number of organisms (e.g., 200 or 300) Having a standard number of organisms (e.g., 200 or 300) would allow for other types of analyses (e.g., RIVPACS)would allow for other types of analyses (e.g., RIVPACS)
Collect and record non-biological dataCollect and record non-biological data– Physical Habitat assessmentsPhysical Habitat assessments– Water ChemistryWater Chemistry
Even just simple parameters would be goodEven just simple parameters would be good– pH, DO, Conductivity, & TemperaturepH, DO, Conductivity, & Temperature
Additional Analyses on the Additional Analyses on the Truckee River - NevadaTruckee River - Nevada
BMI biological index development: Tetra Tech -BMI biological index development: Tetra Tech -Baltimore, MD (Michael Barbour, Eric Leppo)Baltimore, MD (Michael Barbour, Eric Leppo)
Fish biological index development: Oregon State Fish biological index development: Oregon State U. (Dr. Robert Hughes, and Thomas Whittier/ U. (Dr. Robert Hughes, and Thomas Whittier/ Gregg Lomnicky, Dynamac Corporation). Gregg Lomnicky, Dynamac Corporation).
An algae IBI was developed by Desert Research An algae IBI was developed by Desert Research Institute – Reno (Dr. Chris Fritzen and Clint Davis)Institute – Reno (Dr. Chris Fritzen and Clint Davis)
Habitat Index development: Tetra Tech -Habitat Index development: Tetra Tech -Baltimore, MD (Michael Barbour, Eric Leppo)Baltimore, MD (Michael Barbour, Eric Leppo)