Gross primary production in aquatic ecosystems is most likely to be limited by decreases in which of the following nutrient pairs?
A)nitrogen and phosphorous
B)carbon and phosphorous
C)potassium and phosphorous
D)iron and phosphorous
E)molybdenum and phosphorous

Question

Quizplus · Accepted Answer

Nitrogen and phosphorus are two of the most important nutrients for aquatic plants, as they are often limiting factors in primary production. They are commonly found in low concentrations in many aquatic ecosystems, especially in freshwater ones. Nitrogen is necessary for the production of chlorophyll, the pigment that enables photosynthesis in plants, while phosphorus is important for various metabolic processes, such as the synthesis and transfer of energy. A decrease in either of these two nutrients would likely lead to decreased primary productivity in aquatic ecosystems.

Gross Primary Production in Aquatic Ecosystems Is Most Likely to Be