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<br />Colorado Pikeminnow - 4 <br /> <br />adults for 12 years, and San Juan River is maintained as a wild refugia of at least <br />1,200 adults for 5 years after deli sting, unless agreements expand this period of <br />maintenance, OR <br />2. San Juan River population equals to at least 1,000 adults for 12 years and Upper <br />Colorado River population maintains existing numbers of at least 600 adults, such <br />that (for all populations, except for the wild refugia): <br />a. a trend in adult population point estimates for the same 12 year period that <br />does not decline significantly, and <br />b. portion of ages 0, 5, and 6 that equal or exceed catch rates and proportions <br />provided in Table 3 for 8 ofthe same 12 years. <br />3. Provide legal assurance and/or agreements for flows necessary to recover the <br />Colorado pikeminnow, including tributaries which are important to the life history <br />of the species. <br /> <br />Other Ree:ions of the Colorado River Basin <br />1. Maintain through augmentation and/or natural recruitment two wild genetic <br />refugia of at least 2,200 adults each in the lower basin (e.g., Lower Colorado <br />River and Gila River Basin) for 5 years after delisting, unless agreements expand <br />this period of maintenance. <br /> <br />Table 3. Target numbers of Colorado pikeminnow necessary to meet downlisting and deli sting <br />criteria. <br /> <br />Age Density of Age 0, Proportion of Adults, and Monitoring Period Criteria <br /> Estimates of Adults <br /> Downlist Delist <br />0 Green River Reach 3 - ~ 8 fish/l 00 m2 Recurrence interval <br /> Green River Reach 4 - ~ 1.5 fish/100 m2 of at least 5 years <br /> Colorado River Reach 1 - ~5 fish/100 m2 during 12-year <br /> Colorado River Reach 2 - ~5 fish/I 00 m2 monitoring period <br />5 ~ 15% of 7+ estimate ~2 of 5 years ~4 of 12 years <br />6 i ~ 13% of7+ estimate ~2 of 5 years ~4 of 12 years <br />I <br />7+ I Green River - ~2,200 - genetic . lower 95% CI lower 95% CI <br /> I ~2,550 - demographic greater than or greater than or <br /> Colorado River- ~600 - demographic equal to equal to <br /> ~ 1,200 - demographic demographic demographic <br /> San Juan River - 2,200 - genetic criteria for 5 yrs criteria for 5 yrs <br /> 2,550 - refugia <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />