Figure 2. — Sampling l>oat showing macroplankton sampling appartus. 



JIN MB MAR APR MAT IUN I II I AOG SEP OCT NOV DEC 



_i 1 1. 



J I I 1 1 1 1 1_ — -4 -f- 



' ■ i i i • i T u i i ' i ii ii i ii i i ii i: ■ i c n r i unu i 



JAN I t H MAR APR MAT IUN JUL I II G SEP OCT NOV E C 



Figure 3. — Surface (— ) and bottom ( — ) temperatures Figure 4. -- Surface ( — ) and bottom ( — ) salinities 



recorded in Humboldt Bay during 1969. recorded in Humboldt Bay during 1969. 



