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Last modified
7/14/2009 5:02:35 PM
Creation date
5/22/2009 4:53:39 PM
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UCREFRP
UCREFRP Catalog Number
9378
Author
Nesler, T. P.
Title
Recovery of the Colorado River Endangered Fishes
USFW Year
2000.
USFW - Doc Type
Biological recovery goals and criteria for Colorado pikeminnow, Humpback chub, Razorback sucker & Bonytail.
Copyright Material
NO
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<br />Required <br />Populations <br />distribution <br /> <br />Green <br />River <br />Including: <br />Yampa <br />L. Snake <br />White <br />Price <br />Duchesne <br /> <br />Colorado . <br />River <br />Including: . <br />Gunnison . <br />Dolores <br /> <br />San Juan <br />River <br /> <br />!il~I!lr!iii.i1!~I;~~;i~i~i~~i~lilllilll~iil~~t~~~f~~~11~9\~lit~~i~;~~i~"~s'ffi~!~~I~~~jiiiiiiilillil!r:m!mMm'", <br /> <br />Abundance Annual natural recruitment per river Adult population length frequency <br />Abundance trend *5-year rolling averaQe distribution, 5-yr rolling average <br /> <br />· 3,100 adult fish <br />minimum <br />. ~350 mm <br />· lower estimate of <br />95% C.!. for each <br />annual estimate <br />~1550 <br /> <br /> Size cateaorv (mm) <br />Green R.: *5-15% @ 351-400 mm Green River ~350: 20-30% <br /> 2/5 yrs ~1 0% 351-600: 65-75% <br /> ~601 1-10% <br />Yampa R: *5-10% @ 401-500 mm Yampa River ~500: 5-15% <br /> 2/5 yrs ~1 0% 501-700: 75-85% <br /> ~701 5-15% <br />White R: *5-10% @ 351-450 mm White River ~450: 5-15% <br /> 2/5 yrs ~1 0% 451-650: 65-75% <br /> >651 10-20% <br />None <br /> Size cateaorv (mm) <br />Colorado R: *5-15% @ 351-450 mm Colorado River ~350: 1-10% <br /> 2/5 yrs ~1 0% 351-600: 65-75% <br /> ~601 25-35% <br /> <br />1,600 adult fish <br />minimum <br />~350 mm <br />lower estimate of <br />95% C.!. for each <br />annual estimate <br />>800 <br /> <br />. 1,200 adult fish <br />minimum <br />. ~350 mm <br />· lower estimate of <br />95% C.!. for each <br />annual estimate <br />~600 <br /> <br />San Juan R: *5-10% @ 351-450 mm <br />2/5 yrs ~10% <br /> <br />Size cateaorv (mm) <br />San Juan River: ~450: 5-15% <br />451-650: 65-75% <br />~651 10-20% <br /> <br />22 <br /> <br />-~-~-------~-~--~~- <br />
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