These definitions are based not only on the nature of a given resource, but also conditions of access, supply, and demand. These conditions can shift over time. Definitions Property is defined by a set of rights protected by government. Property rights may held by an individual, or a group. These rights vary depending on the resource and owners.
Access is open to all.
Private property rights are enforceable by governments, and can be transferred. The members of this community exclude outsiders and regulate themselves. Such arrangements may be recognized by law, or not. Evidence from both field studies and laboratory studies support the argument that open access common-pool resources are vulnerable to overuse and destruction. Private property, and state property, allow established appropriators to draw on the power of the government in attempts to exclude potential appropriators.