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<br />Table 9. <br /> <br />. <br />. <br /> <br />Population estimates for humpback chub 2 200 mm by year and <br />month; Little Colorado River. <br /> <br /> 95 % Confidence Interval <br />Date Abundance Estimate SE Lower Upper Reach (rkm) # per km <br />May-01 1,470 240 1,000 1,940 o - 13,6 108 <br />ApriUMay 2002 2,002 463 1,095 2,909 0-13,6 147 <br />ApriUMay 2003 1,421 209 1,011 1,831 o - 13.6 104 <br />ApriUMay 2004 1,816 397 1,038 2,594 o - 13.6 134 <br /> I <br /> <br />2001 estimate is from Van Haverbeke and Coggins (2002), 2002 estimate is from Van Haverbeke <br />(2003), 2003 estimate is from Van Haverbeke (2004). <br /> <br />2- .;q L{ <br />~ <br />712 <br />1038 <br />~ <br /> <br />gz11 <br />rOO - ~Ivl- <br /> <br />I ~ 31 <br />I ~ z.,\ <br />~ <br />410 <br />10 1\ <br />..........-. <br />Yl6 <br /> <br />lqL{O <br />I Lf7 0 <br />~ <br /> <br />-z.qo~ <br />11002.- <br />~ <br />... 1000 <br />I bCl') ~.~ <br />~1 <br /> <br />43 <br />