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<br />0 <br />If' 5.3.2. <br />r- <br />'i-l 5.3.3. <br />(.;) <br />C""' <br />-' <br /> 5.3.4. <br /> 5.3.5. <br /> 5.3.6. <br /> 5.3.7. <br /> 5.3.8. <br /> 5.3.9. <br /> <br />Determine the Status and Trends of the Resident <br />Fish Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 <br />Determine the Life History of Endangered and Other Native <br />Fish Species and Relationships to All Other Resident <br />Fish Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 <br />Identify Fish Health Aspects that Negatively Impact <br />Native Fish Species. ............................... 40 <br />Characterize Fish Community Response to Different Annual <br />Flow Regimes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 <br />Identify Limiting Factors for the Endangered and Other <br />Native Fishes (Milestone). ........................... 49 <br />Develop and Implement a Genetics Management Plan <br />to Maintain Genetic Diversity of the Endangered <br />Fish Species (Milestone). ........................... 49 <br />Determine the Need for and Implement, If Necessary, <br />an Augmentation Program for Endangered Fish Species <br />In Appropriate Historic Habitat. . . . . . . . . . . . . .. . . . . . . . . . . 51 <br />Long Term Monitoring Program. ........................ 54 <br /> <br />5.4. Determine the Role(s) of Non-native Fish Species in the Decline of <br />Native Fish Species and Implement Corrective Actions. .......... 54 <br />5.4.1. Characterize Distribution and Abundance of Nonnative <br />Fish Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 <br />5.4.2. Identify and Characterize Habitats Used by Nonnative <br />Fish Species and Effects on Native Fish Species <br /> <br />Habitat Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 <br />5.4.3. Describe Food Habits of Nonnative Fish Species and Evaluate <br />for Predation and Compe~ition Impacts on Native <br />Fish Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 <br />5.4.4. Characterize the Response of Nonnative Fish Species <br />to Varying Flow Regimes and Recommend Flows that <br />Minimize or Eliminate Interactions with Native <br />Fish Species. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 <br />5.4.5. Develop and Implement a Nonnative Fish Stocking <br />Policy (Milestone). .. ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 <br />5.4.6. Develop and Implement Regulations to Restrict Baitfish <br />Species Harvest within Appropriate <br />Habitats (Milestone). ............................... 63 <br />5.4.7. Develop and Implement Regulations to Restrict Importation of <br />Nonnative Fish Species (Milestone). .................... 63 <br />5.4.8. Monitor and Evaluate Actions Implemented to Minimize <br />or Eliminate Native and Nonnative Fish <br />Species Interactions. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 <br /> <br />5.5. Determine the Occurrence, Extent and Role(s) of Water Quality <br />Degradation and Contaminants in the Decline of the <br />Endangered Fish Species and Identify and Implement <br />Corrective Actions. ...................................... 64 <br />5.5.1. Identify and Characterize Historic Water Quality <br />Conditions of the Basin ............................. 64 <br />5.5.2. Identify and Characterize the Presence and Extent of <br />Contaminants and Their Sources (Milestone). ............ 64 <br />5.5.3. Identify and Quantify Biological Effects of Contaminants <br />on Endangered and Other Native Fishes (Milestone). . . . . . . . 66 <br /> <br />San Juan River Recovery Implementation Program <br />Summary Report <br /> <br />vii <br /> <br />17 January 1997 <br />PR-576-2 <br />