Laserfiche WebLink
<br />Table 8. <br /> <br />Population estimates for humpback chub ~ 150 mm by year and <br />month; Little Colorado River. <br /> <br /> 95 % Confidence Interval <br />Date N SE lower Upper Reach (r1<m) # per km <br />Apr-92 5,555 671 4,416 7,067 0-13.6 408 <br />May-92 4,363 1,216 2,594 7,523 o - 13,6 321 <br />Jun-92 4,384 458 3,573 5,381 0-13,6 322 <br />May-01 2,082 242 1,607 2,557 0- 13.6 153 <br />ApriVMay 2002 2,666 463 1,759 3,573 0-13,6 196 <br />April/May 2003 3,419 480 2,478 4,360 0-13.6 251 <br />ApriVMay 2004 2,334 411 1,529 3,138 0-13,6 172 <br /> <br />1992 estimates are from Douglas and Marsh (1996), 2001 estimate is from Van Haverbeke and <br />Coggins (2002), 2002 estimate is from Van Haverbeke (2003); 2003 estimate is from Van <br />Haverbeke (2004). <br /> <br />42 <br />