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Table 1. Comparison between two channel types in frequency of use by <br />Colorado squawfish (CS). Sites are 0.4-mile river segments where radio- <br />tagged adult squawfish were located during 1986-1989 (n - number of dif- <br />ferent Colorado squawfish for which locations were made; SD - standard <br />deviation). <br />Spring <br />(n = 21) <br />Simple Complex <br />No. sites 41 48 <br />8 total sites 46.1 53.9 <br />No. CS locations 27 147 <br />% CS locations 15.5 84.5 <br />No. sites used 11 21 <br />% sites used 34.4 65.6 <br />Mean No. locations <br />per used site 2.45 7.00 <br />(SD). (1.69) (13.45) <br />Mean No. diff fish <br />located per site 1.27 2.90 <br />(SD) (0.47) (3.27) <br />100 <br />80 <br />U 60 <br />Z <br />W <br />40 <br />W <br />0: <br />LL <br />Summer Winter <br />(n - 17) (n = 8) <br />Simple Complex Simple Complex <br />49 40 49 40 <br />55.1 44.9 55.1 44.9 <br />49 120 32 53 <br />29.0 71.0 37.6 62.4 <br />16 22 8 3 <br />42.1 57.9 72.7 27.3 <br />3.06 5.45 4.00 17.67 <br />(2.62) (6.60) (3.25) (20.31) <br />1.75 2.32 1.00 1.67 <br />(1.24) (1.46) (0.00) (1.15) <br />20 <br />0 <br />AVAILABLE USED AVAILABLE USED AVAILABLE USED <br />SPRING SUMMER WINTER <br />Figure 1. Frequency of use of simple and complex channel types by adult <br />Colorado squawfish. Data from Table 1. <br />SIMPLE CHANNEL <br />® COMPLEX CHANNEL <br />8