9439

• UCREFRP Catalog Number: 9439
• Author: Upper Colorado River Endangered Fish Recovery Program.
• Title: Nonnative Fish Control Workshop
• USFW Year: 2002.
• USFW - Doc Type: Summary, Conclusions, and Recommendations.
• Copyright Material: NO

6000
5000
s
N
ii 4000
O
L 3000
CD
M
E 2000
Z 1000
0
CP SS FH RS OT WS BB CC RB GA BS SF BG LM BC YP RT BH FM
Fish Species
Figure 1. Fish sampled in 198 ponds along the Upper Colorado River (1997-2001); N = 15,316;
native fish = 371; nonnative fish = 14,945.
1,000,000
800,000
LL
4- 600,000
L
400,000
E
Z 200,000
0
CP SS FH RS MN WS BB CC PK SF BG LM BC RT FM
Fish Species
Figure 2. Fish removed from 73 chemically reclaimed ponds along the Upper Colorado River
(1997-2001); N = 3,024,000; native fish = 500; nonnative fish = 3,023,500.
80%
70%
O 60%
a
,n 50%
M
w 40%
O
30%
u 20%
L
a 10%
0%
FH SS WS BB SF CP GS LM FM RT
Fish Species
Figure 3. Percent reinvasion of fish species into 35 reclaimed ponds along the Upper Colorado
River.
14