NEW: Annual Report - George Mason University

124
Mean Catch Per Trawl
16
14
12
10
8
6
4
2
Brown Bullhead
Channel Cat
Trawl Station 9
Brown Bullhead and Channel Cat
0
1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004
Figure 163a. Trawls. Annual Averages. Brown Bullhead and Channel Cat. River Station.
Brown bullhead were present in river trawls at moderate values in 2003 (Figure 163a). Values
since 2000 have been a marked improvement over the lows in the late 1990’s (Figure 163a,b).
Channel cat increased incrementally again in 2003, reaching the highest level since the sampling
at station 9 began in 1988 (Figure 163c).
Brown Bullhead (#/trawl)
40
35
30
25
20
15
10
5
River: Trawl Station 9
1980 1990 2000 2010
YEAR
Channel Catfish (#/trawl)
100
10
River: Trawl Station 9
1
1980 1990 2000 2010
YEAR
Figure 163b. Trawls. Long term trend in Figure 163c. Trawls. Long term trend in
Brown Bullhead (Ameiurus nebulosis). Channel Cat (Ictalurus punctatus). River
River Station. Station.