9531

• UCREFRP Catalog Number: 9531
• Author: Hudson, J. M. and J. A. Jackson.
• Title: Populaiton Estimates for Humpback Chub ‎(Gila cypha)‎ and Roundtail Chub ‎(gila robusta)‎ in Westwater Canyon, Colorado River, Utah, 1998-2000.
• USFW Year: 2003.
• USFW - Doc Type: Salt Lake City.
• Copyright Material: NO

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Westwater Canyon Roundtail Chub CPUE 1998-2000

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1998A 1998B 1998C 1999A 1999B 1999C 2000A 2000B 2000C
Year
Figure 8. Westwater Canyon rundtail chub trammel net catch per unit effort by pass for 1998-
. 2000. CPUE for each pass includes respective standard error. Line represents trend
among all passes in all years. The p-value indicates statistical significance of the trend
line.
Westwater Canyon Adult Roundtail Chub Population Estimate
1998-2000
25000 -;- ---_-. ~..__... _ _____ _~_ ._..- ~ _ __
p= i).OS
20000 -` -
15000 -~- _ --_
k -_ -
10000 -I __ _ - _ - -. _
5000 -~
0 -1-- __ -__ . _- -- ,----- _..~ ~- __ ~ ---- - -- ,
1998 1999 2000
Year
Figure 7. Westwater Canyon adult rundtail chub population estimates (N) for 1998-2000. Each
point estimate includes respective profile likelihood confidence intervals. Line
represents short-term trend among the three point estimates. The p-value indicates
statistical significance of the trend line.
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