9711

• UCREFRP Catalog Number: 9711
• Author: Coggins, L.G.
• Title: Abundance trends and status of the Little Colorado River population of humpback chub
• USFW Year: 2008.
• USFW - Doc Type: an update considering 1989-2006 data.
• Copyright Material: NO

28 Abundance Trends and the Status of the Little Colorado River Population of Humpback Chub 1989-2006

5
ASMR 1
4 I
I I I
:::JI:
3 I
I
=-=
2
=-= '*'
'*' :::e;:
'*' =-= '*'
0
5
5 ASMR 2
0
0 4 I I I I
....
2$. I
Q)
u 3 I I
c
ctl
'1:J I
c
:::l 2 I
.0 I I
<C
:t:: ::a: I I
:::l
L.. =-=
U
Q)
a:::
0
5
ASMR3 I I
4 I I
3 I I I
I I
2 I I
=-= I
::E
0
0'> 0 ;; N M od- Ln <:c ,...., <Xl en 0 5 N M
co en CT.> C') CT.> CT.> Cl'> O"J CT.> C') 0 ~ 0
0'> Cl'> C') a'> Cl'> 0') 0") 0'> C') CT.> CD ~ 0 ~
- - - - - - - - N
Brood Year

Figure 6. Humpback chub recruit abundance (age-2) estimates from the age-structured mark recapture (ASMR) models using data
pooled among tag cohorts. Error bars are 95% credible intervals from 200,000 Markov-Chain Monte Carlo trials.