Laserfiche WebLink
~s <br />'-' .8 <br />N <br />W ~' <br />U° .4 <br />c~ <br />L <br />~3 0 <br />U a <br />~`- 7(J" <br />~ N <br />~ p 1.2 <br />O -p <br />(9 ° .8 <br />O <br />O <br />U .4 <br />0 <br />1.25 t25 <br />Reach 1 <br />0.1 10.1 2a1 60.1 40.1 b0.160.7 70.1 80.1 9a1 100.1 <br />-w -20 .30 -40 -so -bo ao -eo -90 .ao -1a <br />4 <br />3 <br />2 <br />0 <br />4 <br />3 <br />2 <br />1 <br />0 <br />9A <br />Reach 4 <br />210.1220.1 260.1 240.1 25a1260.1 27x1 280.1 290.1 coal 310.1 <br />-220 -230 -240 -250 -260 -270 -280 -290 .700 .310 -320 <br />10-Mile Subreach <br />Figure 3.-Distribution, by 10-mile subreach, of YOY Colorado squawfish in the Colorado and <br />Green Rivers, fall 1993. <br />Size Distribution <br />As is frequently the case, mean length of YOY Colorado squawfish from the lower Colorado <br />River was less than the two Green River reaches (Figures 4, 5; Tables A-3, A-4). Mean length was <br />30 mm in Reach 1, 37 mm in Reach 3, and 36 mm in Reach 4. In Reach 4, mean length was lower <br />than it was in 1992. Mean lengths in reaches 1 and 3 were about the same as was observed in 1992. <br />Fish as long as 74 mm were considered YOY in Reach 3 because there was no clear break in the <br />length-frequency distribution. The largest YOY collected from Reach 1 was 47 mm long and the <br />largest from Reach 4 was 59 mm. Four fish longer than 100 mm were collected-three in Reach 1 <br />and one in Reach 3 (Table A-3). <br />~mpatric Species <br />Overall, more native species were collected than in previous years. The percentage of native <br />_ fishes in the first seine haul in primary backwaters (about one-fourth of all seine hauls taken) <br />consisting of native fishes increased in all four reaches from 1992 (Figure 6; Table A-5). However, <br />the increase was much greater in reaches 2 and 3 than it was in reaches 1 and 4. The large increase <br />in native species in Reach 3 was primarily because of larger numbers of Colorado squawfish, but also <br />reflected increased numbers of YOY suckers (Catostomus spp.). The substantial increase in Reach 2 <br />primarily reflected increased numbers of YOY roundtail chub (Gila robusta). <br />5 <br />0.1 10.1 Z0.1 sal 40.1 b0.1 4Q1 70.1 !0.1 90.1 100.1110.1 <br />-a -20 -SO -40 -so -bo ao -so -90 -wo -110 -1zo <br />159.9 149.9 159.9 169.9 <br />10-Mile Subreach <br />