Pattern formation, spatial externalities and regulation in coupled economic–ecological systems

We study the management of ecosystems in which interacting state variables that are affected by management decisions diffuse in space. We study pattern formation first in a setting where economic agents maximize myopic profits and ignore spillovers onto agents at other sites, and second in the context of a social planner who internalizes these spillovers. We compare patterns under these two institutions and study how…

Optimal harvesting of stochastic spatial resources

We characterize the optimal harvest of a renewable resource in a generalized stochastic spatially explicit model. Despite the complexity of the model, we are able to obtain sharp analytical results. We find that the optimal harvest rule in general depends upon dispersal patterns of the resource across space, and only in special circumstances do we find a modified golden rule of growth that is independent…

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