Manning, Dale T.

By: Manning, Dale T.; Suter, Jordan F.
Groundwater is a valuable input to agricultural production in many areas, but its use imposes external costs on nearby producers. Little attention has been given to externalities that directly affect groundwater productivity. We develop a dynamic, spatially-explicit model of groundwater use that allows changes in saturated thickness to affect both the pumping cost and productivity of nearby wells.We compare gains from coordinated, socially optimal groundwater use to those that result from a user pursuing unilateral optimization. For wells with average saturated thickness, both unilateral and coordinated optimization can moderately increase the net present value of resource rents.
By: Manning, Dale T.; Taylor, J. Edward
Most common property resource (CPR) collection in developing countries occurs in imperfect market environments, in which endogenous prices link the economic returns in non-resource activities (i.e., agriculture) with effort supplied to CPR collection. A model of an imperfectly integrated rural household demonstrates the theoretically ambiguous connection between agricultural productivity and resource collection. Using unique panel data from rural Mexico, we find evidence that households with higher agricultural efficiency supply less labor to CPR collection. Interventions that raise agricultural productivity thus may complement resource conservation efforts.