River Environment & River Environment & Aquatic Life Aquatic Life Don Sada Don Sada Walker Basin Stakeholder Walker Basin Stakeholder Meeting Meeting December 12, 2007 December 12, 2007 Dr. Sudeep Chandra (UNR), Fish Dr. Christian Fritzen (DRI), Periphyton Dr. Kumud Archarya (DRI), Food Webs Ron Hershey (DRI), Water Chemistry
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Relationships between River Environment & Aquatic Life Don Sada Walker Basin Stakeholder Meeting December 12, 2007 Dr. Sudeep Chandra (UNR), Fish Dr. Christian.
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Relationships between River Relationships between River Environment & Aquatic Life Environment & Aquatic Life
Don SadaDon SadaWalker Basin Stakeholder MeetingWalker Basin Stakeholder Meeting
December 12, 2007December 12, 2007
Dr. Sudeep Chandra (UNR), Fish
Dr. Christian Fritzen (DRI), Periphyton
Dr. Kumud Archarya (DRI), Food Webs
Ron Hershey (DRI), Water Chemistry
Personal ExperiencePersonal Experience Aquatic Ecologist Aquatic Ecologist (30 years)(30 years)
– Understanding relationships between the environment and aquatic Understanding relationships between the environment and aquatic communities in West U.S.communities in West U.S.
High, middle, and low elevation streams, High, middle, and low elevation streams, rivers, and spring-fed environmentsrivers, and spring-fed environments– FishFish– Aquatic insectsAquatic insects– MollusksMollusks
River Goods & ServicesRiver Goods & Services Traditional Traditional
BenefitsBenefits ConsumptionConsumption
– IrrigationIrrigation– TransportationTransportation– Clean waterClean water
Watershed ContextWatershed Context– Many Sites & FrequentMany Sites & Frequent
Water QualityWater Quality Flow manipulationFlow manipulation MacroinvertebratesMacroinvertebrates Fish distributionFish distribution Riparian studiesRiparian studies Environment and aquatic Environment and aquatic
life relationshipslife relationships
Truckee RiverWalker River
REGIONAL INFORMATION MEAGER COMPARED TO OTHERS
Walker River StudiesWalker River StudiesLocationsLocations
Eight SitesEight Sites
Base of Sierra Base of Sierra Nevada to LakeNevada to Lake– East and West ForksEast and West Forks– MainstemMainstem
Walker River StudiesWalker River StudiesMethodsMethods
Quantitatively Quantitatively Describe River Describe River Physical Habitat Physical Habitat
Quantify Spatial & Quantify Spatial & Seasonal Differences Seasonal Differences and Variation and Variation
– Water ChemistryWater Chemistry– Aquatic LifeAquatic Life
Provide insight into restoration potential Provide insight into restoration potential and goalsand goals
Inform hydrologic models regarding the Inform hydrologic models regarding the consequences of different management consequences of different management decisionsdecisions