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Last modified
7/14/2009 5:02:32 PM
Creation date
6/1/2009 12:41:56 PM
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UCREFRP
UCREFRP Catalog Number
8036
Author
Haynes, C. M., R. T. Muth and G. T. Skiba.
Title
Identification of Habitat Requirements and Limiting Factors for Colorado Squawfish and Humpback Chubs (July 1 1982 to June 30 1983).
USFW Year
1983.
USFW - Doc Type
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Pahle 7. lchthyoplankton drifting densities L/1,000 m3) by species 1n dawn, dusk and midnight drift samples collected during 1982 sampling in <br />the Rlack Rocks area of Ruby Canyon (river kilometer 219.8'218.2), Colorado River, Colorado. Size ranges ate cumulative for the entire sampling period <br />Date 13 Jul 15 Jul 27 Jul 29 Jul 25 Aug 26 Aug Total <br />Timea DN/DK/PIN DN/UK /hlN DN/UK/NN DN/DK/hIN DN/UK/hIN DN/UK/NN DN/DK /PlN <br />Sample volume (m 3) 444/395/412 461/280/280 3.33/189/296 362/310/412 346/346/346 362/346/346 2,308/1,926/2,092 <br />River kilometer 219.8, 219.0, 218.6 219.8, 218.9, 218.6 219.6, 219.3, 219.0 219.6, 219.3, 219.0 219.4, 219.2 219.4, 219.2 219.8-218.6 <br />x water temp., C 19 19 22 21 23 23 21 <br />Fish taxa (total.length range in mm) <br />Rhinichthys osculus (6.5-53.0) 18/10/ 0 9/ 0/ 0 9/ 0/ 0 3/ 3/12 6/ 0/ 3 0/ 0/ 6 8/ 2/ 4 <br />Lila spp. (8.5-114.5) 16/ 0/ 0 11/ 0/ 0 21/ 0/ 0 11/ 3/ 5 61 0/ 0 0/ 3/ 0 11/ 1/ 1 <br />Ptychocheilus lucius (9.0-9.5) 0/ 0/ 0 U/ 0/ 0 0/ 5/ 3 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 0/ 1/ 1 <br />Pimephales promelas (12.5) 0/ 0/ 0 0/ 0/ 0 0/ U/ 0 3/ 0/ 0 0/ 0/ 0 0/ O/ 0 1/ 0/ 0 <br />Cyprinus carpio (28.0) 0/ 0/ 0 0/ 0/ 0 3/ 0/ 0 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 1/ 0/ 0 <br />Cila robusta (176.0) 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 0/ 0/ 3 0/ 0/ 0 0/ 0/ <br />(:atostomus discobolus (11.0-33.5) 13/ 6/ 0 7/ 4/ 4 6/11/ 0 3/ 5/19 U/ 3/ 3 0/ 0/ 3 6/ 5/ 4 <br />C. latipinnis (17.5-28.0) 2/ 3/ 0 0/ 0/ 0 3/ 0/ 0 3/ 3/ 7 0/ 0/ 0 0/ 0/ 0 1/ 1/ 1 <br />Ictalurus punctatus (11.5-74.0) 0/ O/ 0 0/ 0/ 0 0/ 0/ 0 0/ 0/ 2 6/ 3/ 6 0/ 3/ 0 1/ 1/ I <br />Lepomis cyanellus (17.5) 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 0/ 0/ 0 3/ 0/ 0 1/ 0/ 0 <br />Total 49/19/ 0 27/ 4/ 4 42/16/ 3 28/14/45 18/ 6/15 3/ 6/ 9 30/11/L1 <br />aThree sampling times: DN = Dawn, DK Dusk, PIN = Midnight. <br />
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