Answer:
For this ecosystem, the gross annual primary productivity is 16,000 kcal/m2/yr
Explanation:
gross [annual] primary productivity (GPP) = net [annual] primary productivity (NPP) + respiration (R)
GPP = 5,000 kcal/m2/yr + 11,000 kcal/m2/yr
GPP = 16,000 kcal/m2/yr