A fuzzy-logic tool for multi-criteria decision making in fisheries: the case of the South African pelagic fishery

摘要: The present study presents an electronic decision-support tool that uses a fuzzy-logic model of expert knowledge to assist in multi-criteria decision-making the context Ecosystem Approach Fisheries (EAF). prototype integrates multiple goals and objectives related evaluation ecosystem performance South African sardine Sardinops sagax fishery into NetWeaver base provides intuitive visual outputs communicate results managers stakeholders. software was developed consultative process with key experts follows hierarchical tree approach recommended FAO guidelines for responsible fisheries. Input variables are based both on quantitative data opinion. We evaluated terms robustness input changes, influence system structure, appropriateness scales parameters Results show is robust conservative. strength lies ability include difficult measure. It means rendering value judgements explicit transparent. synthesises large amount information aims at improving understanding rather than achieving precision. has potential have wide application EAF.