Fig. 7. Modified scheme (compare with Fig. 6) indicating that all stakeholders, including the researchers, will enter the negotiations with their own mental models of the real world and the impacts of activities on the performance indicators in which they are interested. These indicators include: P, productivity or profitability; B, biotic interactions or biodiversity; S, sustainability; F, fire or smoke; C, carbon stocks and net emissions of other greenhouse gasses; W, watershed functions or the regular supply of clean water; K, knowledge that can be used to update the various mental models; and E, ethical or aesthetic values.