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Extracting spatial resources under possible regime shift

Christopher Costello, Bruno Nkuiya and Nicolas Querou

Working Papers from LAMETA, Universtiy of Montpellier

Abstract: How will countries harvesting mobile renewable resource react to the threat of climate change? We address the non-cooperative exploitation of a migratory renewable resource in the presence of possible regime shift that affects its movement. Motivated by the anticipated effects of climate change, we model a regime shift that will alter the spatial movement patterns of the resource at some point in the future. We develop a stochastic spatial bioeconomic model to address the effects of this class of regime shift on non-cooperative harvest decisions made by decentralized owners such as countries exploiting a migratory fish or other natural resource stock. We find that the threat of a future shift modifies the standard golden rule and may induce more aggressive harvest everywhere, irrespective of whether the owner will be advantaged or disadvantaged by the shift. We also identify conditions under which the threat of regime shift induces owners to reduce harvest rates in advance of the shift. Our analysis suggests that different property rights structures (single ownership vs common property) or heterogenous growth can give rise to previously unexplored incentives and can even reverse conventional wisdom about how countries will react to the threat of environmental change.

New Economics Papers: this item is included in nep-env
Date: 2017-08
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