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<br />N II)
<br />I- w N II)
<br />I&.. 3 3 a: I- 3 3 w
<br />':- w I&.. IE
<br />0 II) ':- w
<br />z ':- 0 II)
<br /> 0 Z ~
<br />E 2 2 Z 2 2 0
<br />" , 2 z
<br />0 , 0 " .,'"
<br /> ., 0
<br />-' '\ ., C) 0 ,----'"
<br />I , ~- - -, 0 -' " \ C)
<br /> , \
<br />~ , , -' 0
<br />0 , , BOTTON I ~ / BOTTON -'
<br />I- '\ , I- 0 / I
<br />I- " , I-
<br />0 I&.. I- / l-
<br /> I&..
<br />II) 0 0 a: 0 0 - /
<br /> a m 0 a:
<br /> JUNE JULY AUG SEPT JUNE JULY AUG SEPT a
<br /> MONTH MONTH
<br />
<br />Figure I, Comparison of the Densities of Baetis sp, I Nymphs (left)
<br />with Simuliidae larvae (right)on the Bottom and in the
<br />Drift at Carr Ranch, Green River, 1965
<br />
<br />Source: W. D, Pearson, "Distribution of Macro-Invertebrates in the Green
<br />River Below Flaming Gorge Dam, 1963-1965" (M.S. thesis, Utah State University,
<br />Logan, 1967),
<br />
<br /> II) N II)
<br />N W I- W
<br />I- "", ... .... a: I&.. a:
<br />I&.. 3 ., 3 W ,,3 3 W
<br />':- BOTTOM ., II) II)
<br /> "'-.. '" ., " 0 "'-
<br />0
<br />Z , 0 Z 0
<br />02 , 2 Z 22 2 Z
<br /> ,
<br />,,- I 0 " 0
<br />0 , C) 0 "
<br />-' 0 -' 0
<br />I I -' I -'
<br />~ I ~ I
<br />0 I- 0 l-
<br />I- I&.. l- I&..
<br />l- I-
<br />0 a: 0 a:
<br />II) 0 0 a II) 0 0 a
<br /> JULY AUG SEPT JUNE JULY AUG SEPT
<br /> MONTH MONTH
<br />
<br />Figure 2. Comparison of the Densities of Baetis sp, I Nymphs (left)
<br />with SimulUdae larvae (right) on the Bottom and in the
<br />Drift at Little Hole, Green River, 1965
<br />
<br />Source: W. D, Pearson and D. R. Franklin, "Some Factors Affecting Drift
<br />Rates of Baet1s and Simul1idae in a Large River," EcoloJn' vol. 49, no, I, 1968.
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