You track aquatic coastal levels of nitrogen and phosphorus at high latitudes and notice a sharp increase in the winter and then again in the spring. What do you expect the effect of these nutrient increases will be on the plankton populations?
A. sharp spikes in population levels at
essentially the same time (or, in phase) with
the spikes in nutrients
B. sharp spikes in population levels some
time after (or, out of phase) with the spikes in
nutrients
C. a sharp spike in population levels in the
spring, when light levels are higher; not much
of a response in winter
D. no effect of the changes in nutrient
concentration on the plankton populations in
either winter or spring
C
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