Suppose that the NEE of a boreal forest ecosystem is 120 units per month. The respiration by autotrophs is 60 units per month, and the respiration by heterotrophs is 30 units per month. What is the GPP of the forest?
A) 60 units per month
B) 90 units per month
C) 150 units per month
D) 210 units per month

Question

Quizplus · Accepted Answer

GPP (Gross Primary Productivity) is calculated as NEE (Net Ecosystem Exchange) plus total respiration (autotrophic and heterotrophic). Here, GPP = 120 + 60 + 30 = 210 units per month.

Suppose That the NEE of a Boreal Forest Ecosystem Is