Question

1. the net annual primary productivity of a particular wetland ecosystem is found to be 2,000 kcal/m². if respiration by the aquatic producers is 18,000 kcal/m² per year, what is the gross annual primary productivity for this ecosystem, in kcal/m² per year?

Explanation:

Step1: Recall the formula

Gross Primary Productivity (GPP) = Net Primary Productivity (NPP) + Respiration (R)

Step2: Substitute the values

Given NPP = 2000 kcal/m² and R = 18000 kcal/m². So, GPP = 2000+ 18000

Step3: Calculate the result

GPP = 20000 kcal/m²

Answer:

20000 kcal/m²