Would the mass of producers consumed increase or decrease as the pellet collection location goes from the equator towards the poles?

Producers are organisms that have the ability to manufacture their own food. Plants are producers since they make their own food using the process of photo synthesis. At the equator the mass of producers or plants is highest and this value decreases as one moves north or south of the equator. This is because the optimum conditions for plant growth exist there. therefore this means the mass of produces consumed would decrease moving from the equator to the poles.