What season does phytoplankton peak in the northern temperate zone?
a. Spring
b. Summer
c. Autumn
d. Winter
ANS: A
Larger plankton bloom in temperate zones peak in Spring due to increasing lamination. There is
another smaller peak that occurs in Autumn to coincide with upwelling events. Information can be
found in the section Phytoplankton Productivity varies with Local Conditions.
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