Representative Group Decision-Making in Forest Management : A Compromise Approach

A correct aggregation of stakeholders’ preferences is a vital aspect in solving problems associated with natural resources. In fact, there is no one solution that permits the incorporation of those preferences into techniques that, in turn, may address multiple objectives in the management of those resources. In this context, this work aims to assign, analyse and compare the weights of importance to groups of stakeholders (representativity) starting from different approaches and methodologies: pairwise comparison matrices (using a subjective approach), and the Voting Power notion (when an objective approach is deployed). For the latter, a variant of the extended goal programming model has been employed. The results will show different weight values and, therefore, scenarios, in which the social groups defined acquire a diverse importance. It has also been observed that there may be scenarios determined by different values of the control parameter, in which the results of the two above-mentioned approaches are similar. Finally, it is demonstrated how the affiliation of the stakeholders to another social groups (different identities) affects the results obtained