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Clearly defined boundaries (effective exclusion of external unentitled parties);
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Rules regarding the appropriation and provision of common resources are adapted to local conditions;
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Collective-choice arrangements allow most resource appropriators to participate in the decision-making process;
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Effective monitoring by monitors who are part of or accountable to the appropriators;
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There is a scale of graduated sanctions for resource appropriators who violate community rules;
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Mechanisms of conflict resolution are cheap and of easy access;
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The self-determination of the community is recognized by higher-level authorities;
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In the case of larger common-pool resources: organization in the form of multiple layers of nested enterprises, with small local CPRs at the base level.
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Elinor Ostrom and colleagues
(Pretty sure this is the second time I’ve posted this, but no matter.)