8158

• UCREFRP Catalog Number: 8158
• Author: Osmundson, D. B.
• Title: Longitudinal Variation in Fish Community Structure and Water Temperature in the Upper Colorado River; Final Report.
• USFW Year: 1999.
• USFW - Doc Type: Grand Junction, Colorado.
• Copyright Material: NO

3.5
3
2.5
2
ca 1.5
1
0.5
0
Fish 100-300 mm TL
Strata 7-12
Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa
94 95 94 95 94 95 94 95 94 95 94 95
Period
7 8 9 10 11 GU-12
Stratum

3.5 OBH SUCKER ®FM SUCKER ®SQUAWFISH ®WS & HYBRIDS ®RT CHUB
BSALMONIDS DACE ®CARP ®Other NN
3
c2.5
- E 2
r-
ca
U-1.5
1
0.5
0
Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa Sp Fa
94 95 94 95 94 95 94 95 94 95 94 95
Period
7 8 9 10 11 GU-12
Stratum
Figure 8. Electrofishing catch rates offish suitable as forage (those100-300 mm long,
excluding ictalurids) for adult Colorado pikeminnow by study stratum (7-12) and sampling
period. Upper graph depicts mean total catch rate of all fish groups combined (error bars
represent mean +/- 1 SE); lower graph provides mean catch rates by fish group.
17