population estimates for humpback chub - Upper Colorado River ...
population estimates for humpback chub - Upper Colorado River ...
population estimates for humpback chub - Upper Colorado River ...
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Westwater Canyon Humpback Chub Annual Incremental<br />
Growth<br />
Mean Annual Growth (mm)<br />
40<br />
35<br />
30<br />
25<br />
20<br />
15<br />
10<br />
5<br />
0<br />
180-200 201-220 221-240 241-260 261-280 281-300 301-320 321-340 341-360<br />
Initial Size (mm)<br />
1998-1999 1999-2000 All Years<br />
Figure 4. Westwater Canyon <strong>humpback</strong> <strong>chub</strong> annual incremental growth <strong>for</strong> individuals between<br />
1998–1999 and 1999–2000, and among all years (1992–2000). All years data includes<br />
<strong>estimates</strong> of average annual growth <strong>for</strong> individuals that were recaptured after more than<br />
one year at large. Standard error is not included <strong>for</strong> respective size classes and years that<br />
annual incremental growth was determined from one individual.<br />
Westwater Canyon Humpback Chub Historic ISMP CPUE<br />
1.6<br />
CPUE (fish/trammel net hour)<br />
1.4<br />
1.2<br />
1<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0<br />
1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000<br />
Year<br />
p
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