If an oligotrophic marine system has low concentrations of both nitrogen and phosphorus, it is said to be
A) eutrophic.
B) polluted.
C) high BOD.
D) colimited.
E) hypoxic.

Question

Quizplus · Accepted Answer

If an oligotrophic marine system has low concentrations of both nitrogen and phosphorus, it is said to be colimited, meaning that the system's productivity is limited by both nutrients. Eutrophic systems have high concentrations of nutrients and are highly productive, while polluted systems have an excess of anthropogenic contaminants. High BOD refers to high levels of organic matter decomposition, and hypoxic systems have low oxygen concentrations.

If an Oligotrophic Marine System Has Low Concentrations of Both