188
E. D. S. CORNER AND ANTHONY 0 . DAVIES
Phosphate phosphorus
40, Chlorophyll
6 , Zooplankton volumes
5
4
E
\
3
2
€
2
I
0
1952
1953
1954
FIG. 16. Tho seaaonal variation of nutrients, chlorophyll and zooplankton in Long
Island Sound. The data are the averages of weekly observations at four inshore
stations. The solid line gives surface data, and the dotted line data for the bottom.
The zooplankton volumes were obtained using an oblique tow (with 8 # 10 net)
from near the bottom to the surface. (After Riley and Conover, 1956.)
and cell numbers coincided with the decreases in the nutrient concentrations in late winter and several minor blooms took place up to the
early autumn. Whereas the spring bloom was dominated by centrate
diatoms, in the summer months dinoflagellates represented the bulk of
the phytoplankton population (S. A. M. Conover, 1956), and the increase
E. D. S. CORNER AND ANTHONY 0 . DAVIES
Phosphate phosphorus
40, Chlorophyll
6 , Zooplankton volumes
5
4
E
\
3
2
€
2
I
0
1952
1953
1954
FIG. 16. Tho seaaonal variation of nutrients, chlorophyll and zooplankton in Long
Island Sound. The data are the averages of weekly observations at four inshore
stations. The solid line gives surface data, and the dotted line data for the bottom.
The zooplankton volumes were obtained using an oblique tow (with 8 # 10 net)
from near the bottom to the surface. (After Riley and Conover, 1956.)
and cell numbers coincided with the decreases in the nutrient concentrations in late winter and several minor blooms took place up to the
early autumn. Whereas the spring bloom was dominated by centrate
diatoms, in the summer months dinoflagellates represented the bulk of
the phytoplankton population (S. A. M. Conover, 1956), and the increase