Phytoplankton of the seasonal surveys of 1976, of September 1970, and pre- vs. post-operational comparisons at Cook Nuclear Plant / John C. Ayers.

CENTRICS
ZONE 1

inner
outer o. —o

1 1
0 I I
/I 1\
J SA J N A J O A J O A J O A J O A J O
1970 1971 1972 1973 1974 1975 1976
FIG. 6j. Mean abundances of centric diatoms in zone 1 in the spring, summer, and fall seasonal
surveys of 1970 - 1976. The vertical bars show the standard error. See Table 7 for sample sizes.