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Common-pool resource

Type of good in economics

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Examples of common-pool resources

Common-pool goods are typically regulated and nurtured in order to prevent demand from overwhelming supply and allow for their continued exploitation. Examples of common-pool resources include forests, man-made irrigation systems, fishing grounds, and groundwater basins. For instance, fishermen have an incentive to harvest as many fish as possible because if they do not, someone else will—so without management and regulation, fish stocks soon become depleted. And while a river might supply many cities with drinking water, manufacturing plants might be tempted to pollute the river if they were not prohibited from doing so by law because someone else would bear the costs. In California, where there is a huge demand for surface water but supplies are limited, common pool problems are exacerbated because the state does not manage groundwater basins at the state level. During the 2012-2016 drought, farmers with senior water rights dating back to the 19th century could use as much water as they wanted, while cities and towns had to make drastic cutbacks to water use.

In James Bay, Quebec, the beaver was an important species for food and later commerce when the fur trade started in 1670. Amerindian groups in the area have traditionally used resources communally and have a heritage of customary laws to regulate hunting. However, in the 1920s the railroads caused a large influx of non-native trappers who took advantage of the high fur prices and the indigenous people losing control of their territories. Both non-native and native trappers contributed to the decline of the beaver population, prompting conservation laws to be enacted after 1930 and outsiders being banned from trapping in James Bay. Eventually, Amerindian communities and family territories were legally recognized, and customary laws became enforceable. This restoration of local control allowed for the beaver population to recover.

Since 1947, the Maine lobster catch has been remarkably stable despite predictions of resource collapse. The state government has regulations in place but does not limit the number of licenses. The exclusion to this CPR is done through a system of traditional fishing rights which makes it so that one needs to be accepted by the community to be able to go lobster fishing. Those in a community are restricted to fishing in the territory held by that community. This is enforced by surreptitious violence towards interlopers. Fishermen in these exclusive territories catch significantly more and larger lobsters with less effort than those in areas where territories overlap.

In the New York Bight region, a cooperative of trawl fishermen that specializes in harvesting whiting limits entry into the local fishery and establishes catch quotas among members. These quotas are based on regional market sales estimations and attempt to encourage initiative while discouraging “free-riding.” They limit entry to the whiting grounds and markets through a closed membership policy and by controlling the dock space. Due to these methods, they have access to the best whiting grounds, dominate the market during winter, and can maintain relatively high prices through supply management. The fishermen consider this type of self-regulation both flexible and effective in maintaining sustainable use.

Reduction of government debt and the debt-to-GDP ratio is a common-pool resource, which can be connected to deficit spending.

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