“…Strict maximization of profit subject to input costs is insufficient as a production management strategy for multi-functional outputs which require tempering of externalities. Compatibility of alternative recreational uses can be assessed with an additivity constraint as suggested by Clawson (1974), Bailey and Friedlaender (1982), Weitzman (1992) and Marcouiller, Scott, and Prey (2008). Of course, as non-priced inputs to tourism, there is typically not a mechanism to transfer actual market benefits of tourism to joint producers who, often, rely on government commodity subsidies, non-profit incentives and local pride as additional decision criteria to produce in a certain fashion.…”