CalCOFI Reports, Vol. 11, 1967 - California Cooperative Oceanic ...

REPORTS VOLUME XI, 1 JULY 1963 TO 30 JUNE 1966125terms of census estimates (only four cruises weremade per year after 1960, rather than 10 to 12),other methods of evaluating the increase indicate thatabundance more than doubled between 1958 and1965.The census estimates permit a better evaluation ofabundance of sardine and anchovy larvae in the 7areas of the CalCOFI region during 1951-59.As already noted, sardine eggs and larvae wereobtained more consistently off central Baja California(lines 110-137) than off northern Baja California andsouthern California (Figure 6). Sardine larvae wereproportionately more abundant, however, off lowercentral Baja California (station lines 123-137) during1951-54 than later. Off northern Baja California(lines 97-107) and southern California (lines 80-93)abundance was low in 1951-53 but proportionatelyhigher during 195659.Throughout the decade only negligible numbers ofsardine larvae were taken off central California (lines60-77) and none off northern California. The numberstaken off southern Baja California (lines 140-157)undoubtedly would have been higher if this area hadN FRANCISCOINT CONCEPTION140 81 SOUTHFIGURE 7. Anchovy larvae: Annual census estimates by area, 1951-59.