In some ecosystems, NPP actually decreases at very high levels of precipitation. Which of the following is not a likely reason for such declines in NPP?
A) Respiration of heterotrophs increases at high precipitation levels.
B) High precipitation levels can lead to the leaching of nutrients from the soil.
C) High precipitation levels can lead to low oxygen levels in the soil.
D) In areas where precipitation is extremely high, it is often cloudy, decreasing the amount of available sunlight.

Question

Quizplus · Accepted Answer

Increased respiration of heterotrophs at high precipitation levels does not directly decrease NPP, as NPP is the net primary production by plants, not affected by heterotroph respiration.

In Some Ecosystems, NPP Actually Decreases at Very High Levels