7610

• UCREFRP Catalog Number: 7610
• Author: Wick, E. J. and J. A. Hawkins.
• Title: Colorado Squawfish Winter Habitat Study, Yampa River, Colorado, 1986-1987
• USFW Year: 1987.
• USFW - Doc Type: Final Report Year 1.
• Copyright Material: NO

50
e:
3
0
z
W
D
a
W
b.
4
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
SUBSTRATE - INNER HOLE (LONG TERM)
NORMAUZED
Total hours: 136.5
Maximum frequency (hours): 54.2
Code Substrate
CL = clay T -rCSI-
SI = slit 2 CLSA
SA = sand 3 SISI
GR = travel 4 SISA
CO = cobble 5 SIGR
80 = boulder SIC0
7 SASI
8 SASA
9 SAGR
11 SACO
11 GRSI
12 GRSA
13 GRGR
14 GRCO
15 GR80
16 COCL
17 COSI
18 COSA
19 COGR

n
u
•
a
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
SUBSTRATE CODE
Figure 45. Substrates used by 10 radiotagged adult Colorado squawfish on the
Yampa River, Dec 1 - Mar 21, 1986-1987. Measurements taken 1-2 meters
towards shore from fish location during 24 hour sampling.
i
rc
O
z
W
a
W
a:
LL
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
SUBSTRATE - INNER HOLE (SHORT TERM)
NORMAUZED
Code Substrate
CL = clay T -CUT-
SI = sill 2 CLSA
SA = sand 3 SISI
GR = gravel 4 SISA
CO = cobble 5 SIGR
RO : boulder 6 C
SASI
8 SASA
9 SAGR
16 SACO
11 GRSI
12 GRSA
13 GRGR
14 GRCO
15 GRRO
16 COOL
17 COST
18 COSA
19 COGR
Total hours: 82.4
Maximum frequency
(hours): 24.5
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
SUBSTRATE CODE
Figure 46. Substrates used by 10 radiotagged adult Colorado squawfish on the
Yampa River, Dec i - Mar 21, 1986-1987. Measurements taken 1-2 meters
towards shore from fish location during 2.5 hour sampling.
a