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<br />Table 1. Summary of closed population abundance estimates for the Little Colorado River population of humpback chub (continued). <br /> <br />AUTHOR LOCATION DATE FISH ABUNDANCE METHOD COMMENTS <br /> SIZE ESTIMATE <br />Minckley 1990 LCR confluence (<1.2 km) May 1990 > 150 mm 6,492 Petersen Invalid sample design; no <br /> distinction between mark <br /> and recanture efforts. <br />Minckley 1990 LCR (<15 km) May 1990 >150 mm 11,985 Petersen Invalid sample design; no <br /> distinction between mark <br /> and recanture efforts. <br />Douglas and LCR confluence (<1.2 km) May 1992 >150 mm 1,320 Program CAPTURE (many Appears sound; peer- <br />Marsh 1996 estimators used; statistically reviewed journal <br /> determined the best one) Dublication. <br />Douglas and LCR (<15 km) May 1992 >150mm 4,363 Program CAPTURE (many Appears sound; peer- <br />Marsh t 996 estimators used; statistically reviewed journal <br /> determined the best one) Dublication. <br />Valdez and Ryel LCR Inflow' 1991 >200 mm 3,315 Program CAPTURE (many Appears sound; peer- <br />1995 estimators used; statistically reviewed contractor <br /> determined the best one) report. <br />Valdez and Rye! LCR Inflow' 1992 >200 mm 3,572 Program CAPTURE (many Appears sound; peer- <br />1995 estimators used; statistically reviewed contractor <br /> determined the best on~) report. <br />Valdez and Ryel LCR Inflow' 1993 >200mm 3,558 Program CAPTURE (many Appears sound; peer- <br />1995 estimators used; statistically reviewed contractor <br /> determined the best one) report. <br />Coggins and Van LCR (< 14.2 km) Oct. 2000 > 135 mm 1,590 Chapman-Petersen Appears sound; peer- <br />Haverbeke 2001 reviewed a~encv renort. <br />Van Haverbeke LCR (< 14.2 km) May 200 I >100 mm 3,527 Length - Stratified Chapman- Appears sound; peer- <br />and Coooins 2003 Petersen reviewed avencv renort. <br />Van Haverbeke LCR (< 14.2 km) May 2001 >150mm 2,387 Length - Stratified Chapman- Appears sound; peer- <br />and Co~~ins 2003 Petersen reviewed a!!encv reoort. <br />Van Haverbeke LCR(<14.2km) May 2001 >200mm 1,568 Length - Stratified Chapman- Appears sound: peer- <br />and Co~2ins 2003 Petersen reviewed agencv renort. <br /> <br />a Kaeding and Zimmerman defined the LCR Inflow Reach as Colorado River miles ~51.5-71.5 <br />'Valdez and Ryel1995 defined the LCR Inflow Reach as Colorado River miles 57-65.4 <br />'Trammell and Valdez 2002 defined the LCR Inflow Reach as Colorado River miles 56.3-68.3 <br /> <br />Draft- April 21, 2003 <br /> <br />15 <br />