Demer et al.: Seasonal migration of Sardinops sagax in the California Current Ecosystem 
55 
50 
45 - 
40 
35 
30 
50 
45 
40 - 
35 - 
30 J 
Vancouver Is. (Canada) 
Strait of Juan de Fuca 
A 
Washington 
Columbia River 
Oregon 
Conception 
Summer 
125 
122 
— i 1 1 
125 122 
Density (t nmr 2 ) 
0-10 
• 10-100 
100-500 
500-1000 
1000-5000 
5000-10000 
Species Code 
o 
Northern anchovy 
( Engraulis mordax) 
Pacific herring 
^ (Clupea pallasii) 
r~\ Pacific mackerel 
^ (Scomber japonicus) 
Jack mackerel 
(Trachurus symmetricus) 
Pacific sardine 
( Sardinops sagax) 
No catch 
Longitude (°N) 
Figure 2 
Acoustically detected biomass densities of coastal pelagic fish species (CPS) [t nmi~ 2 ; sampling 
unit=0-70 m depth by 2-km trackline distance; left plots], and trawl catches including at least 
one CPS specimen (CPS catch) and no CPS catch (right plots) for the 2008 spring (upper plots) 
and summer (lower plots) surveys. For each catch including CPS, the proportion of each CPS is 
represented by the proportion of the circle with its color code. 
