Fig. 4.

PROMETHEE results for candidate wetland restoration alternatives using different combinations of indicator weights. Arrow points from preferred alternative to non-preferred alternative, indicating a preference relationship (e.g.,$aPb$); no arrow indicates an incomparable relationship (e.g.,$aRb$). Panel a shows the iteration using equal weights as a baseline. Panel b shows an iteration where reducing flood risk and social equity were weighted, with greater weight assigned to flood risk benefit indicators than to the social equity benefit indicators. Panel c shows an iteration where recreation, education, and social equity were weighted, with greater weight assigned to recreation benefit indicators than to education and social equity benefit indicators. See the Supplementary material for indicator weights and calculations.