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NARRATIVE <br />Synopsis a-~d Details of Recovery Plan Steps <br />The narrative section of the plan provides detail for the research <br />and management activities of the step-down outline section. . <br />GOAL: Restore and maintain a minimum of five self-~ustainin$ humpback <br />chub populations in the Colorado River system by 1990. <br />Seven major objectives must be accomplished to create stable <br />humpback chub populations. Most vital are efforts to protect and <br />manage existing populations and their habitat. A hatchery pro- <br />pagation program is called for - it will produce fish for laboratory <br />studies and reintroductions. The hatcheries will also serve as <br />refugia in case some catastrophe were to eliminate wild humpback <br />chub stocks. The research work planned includes comparative <br />taxonomic studies of fishes in the genus Gila, development of <br />propagation techniques to maximize production while maintaining <br />genetic diversity, analysis of humpback chub habitat requirements, <br />and quantification of population characteristics. Management <br />activities include preparation of habitat management and protection <br />plans, as Infozmation ~ Education campaign, and coordination of <br />the multi-agency recovery effort. .A five-year budget which assigns <br />priorities, requests funds, and suggests agency responsibilities <br />is included. <br />1. Determine h back chub habitat re uirements~and areas of essential <br />habitat. <br />Habitat preferences must be quantified. All areas with characteristics <br />conducive to humpback chub survival, especially reproduction, must be <br />identified. <br />11. Quantify habitat requirements and limiting factors. <br />Analyses of the physical, chemical, and biological characteristics <br />of habitat used by humpback chubs will be conducted, especially <br />in the spawning area. Hopefully, specific limiting factors can <br />subsequently be recognized. <br />13 <br />