Question

What is the net primary productivity of an algal bed if the gross primary productivity in an algal bed is 7 kcal/m2/yr and respiration is 3 kcal/m2/yr?

Answer 1

Answer:

$NPP = 4\ kcal/m^2/yr$

Explanation:

Given

$Gross\ Primary\ Productivity, GPP= 7\ kcal/m^2/yr$

$Respiration, R= 3\ kcal/m^2/yr$

Required

Determine the Net Primary Productivity (NPP)

NPP is calculated as follows;

$NPP = GPP - R$

Substitute values for GPP and R

$NPP = 7\ kcal/m^2/yr - 3\ kcal/m^2/yr$

$NPP = 4\ kcal/m^2/yr$

Hence, the Net Primary Productivity is $4\ kcal/m^2/yr$