Abstract
Ringkøbing Fjord is a large and shallow brackish lagoon on the west coast of Denmark that has gone through two environmental regime shifts in recent decades. Different intervention strategies, including nutrient abatement and the construction of facilities to increase the water exchange between the lagoon and the outside sea, have been proposed to achieve good water quality in terms of trophic state and conditions for waterfowl. The selection of an intervention strategy is a complex decision-making problem in which several conflicting objectives, like costs of application and environmental or social impacts, must be taken into account simultaneously. We propose a PC-based decision support system, called the Generic Multi-Attribute Analysis system, to deal with such interdisciplinary analyses. It evaluates the intervention strategies by means of an additive multiattribute utility model accounting for imprecision of the various components of the analysis, such as intervention strategy performances and decision-makers’ preferences. Also, it implements what is known as decision making with partial information, through the application of Monte Carlo simulation techniques. This enables a straightforward analysis of the difference between an anthropocentrist and an ecocentrist view of the problem, from which a final recommendation can be reached.
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Jiménez, A., Mateos, A. & Bryhn, A.C. Selecting intervention strategies against eutrophication and the drastic decrease in bird abundance in Ringkøbing Fjord. TOP 19, 448–463 (2011). https://doi.org/10.1007/s11750-010-0136-x
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DOI: https://doi.org/10.1007/s11750-010-0136-x
Keywords
- Multiattribute utility model
- Nutrient abatement
- Water exchange
- Waterfowl
- Decision support systems
- Decision analysis