- Existence value
Existence values are an unusual and somewhat controversial class of
economic value, reflecting the benefit people receive from knowing that a particular environmental resource, such as Antarctica, the Grand Canyon, endangered species, or any other organism or thing exists.
Existence value is a prominent example of
non-use value, as they do not require that utilitybe derived from direct use of the resource: the utility comes from simply knowing the resource exists. The idea was first introduced by John V. Krutilla, though he used the term "sentimental value."Fact|date=October 2007
[http://www.pco-bcp.gc.ca/raoics-srdc/default.asp?Language=E&Page=glossary As the Canadian Privy Council explains] , existence value is "A concept used to refer to the intrinsic value of some asset, normally natural/environmental. It is the value of the benefits derived from the asset's existence alone. For example, a tree can be valued in a number of ways, including its use value (as lumber), an existence value (simply being there), and an option value (value of things that it could be used for). Existence value is separate from the value accruing from any use or potential use of the asset."Fact|date=October 2007
These values are commonly measured through
contingent valuationsurveys and have been actionable damages in the US since "State of Ohio v United States Dep't of Interior".Who|date=October 2007 They were used in a legal assessment of damages following the Exxon Valdez oil spill.
Value of Earth
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