Selecting intervention strategies for the RingKobing Fjord on the basis of decision analyses

Different intervention strategies, including nutrient abatement and the construction of facilities to increase the water exchange between the lagoon and the outside sea, are evaluated by means of an additive multi-attribute utility model to achieve good water quality and good conditions for waterfowl in the Ringkobing Fjord lagoon (Denmark). A decision support system, called the GMAA, is used. This system is intended to allay many of the operational difficulties involved in the decision analysis cycle is used. The system is an efficient tool for taking into account the uncertainty of the various components of the analysis and enables an analysis of the difference between an anthropocentric and an ecocentric view of the problem. It implements what is known as decision making with partial information, which takes advantage of the imprecise inputs.