Laserfiche WebLink
5. To provide recommendations to the Recovery Program outlining research and <br />management actions to improve our understanding of the role of tributary <br />streams in recovery of listed fishes. <br />In a narrow sense, the project is a review and synthesis of existing information <br />concerning the potential of selected tributaries to make. significant contributions either <br />directly or indirectly to recovery of the endangered fishes. In a broad sense, the project <br />encourages asystem-wide view of management options for optimizing habitat <br />conditions for the native fish community. <br />In addition to the five broad goals outlined above, specific objectives of this study <br />included: <br />1 }determining the geographic extent and frequency of use of endangered fish <br />habitat in upper basin tributaries that were evaluated; <br />2} determining which tributaries may especially influence endangered fish habitat <br />in downstream areas because of the location in the river system; <br />3) determining direct and indirect benefits that may accrue for each of the <br />selected tributaries; <br />4) relating identified benefits with specific life history strategies and stages of the <br />affected fish or fishes; <br />5) evaluating potential obstacles that may limit use of any identified benefits by <br />the fish; <br />6) integrating stream characterizations to contrast potential benefits against <br />obstacles that may preclude realization of recovery measures, and <br />7) providing recommendations to the Recovery Program about the relative <br />importance of various tributaries for recovery of the endangered fishes and <br />measures that may need to be taken to increase the effectiveness of the recovery <br />effort. <br />STUDY METHODS AND APPROACH <br />This-study constitutes a review and synthesis of existing information with two <br />assumptions: (1) some tributary streams are important for endangered fishes, and (2) <br />there may be opportunities to enhance recovery of the endangered fishes in some <br />tributaries by informed management actions. The study area for this project is confined <br />to certain tributary streams of the upper Colorado River basin above the confluence <br />with the San Juan River, as identified by the Recovery Program. At some point in all <br />streams a decision is made about what is tributary and what is the mainstream river. In <br />4 <br />