Using models in ecological engineering: examples with the forest stand dynamics model SAMSARA

Abstract

Models may be used at different steps of an ecological engineering approach. Their first role is to help us formalise our knowledge. In a research context, their prediction capacity allows us to test various assumptions about the processes at work in the system. Models may also be used to elaborate management guidelines. In the context of a local application, a model may help an engineer to adapt his general knowledge to the specific context, to establish a diagnostic and adapt management strategies. The models required for this approach are nevertheless usually sophisticated. Models may also be used as mediating instruments in project negotiations. Their use for training allows also to implicate trainees through stimulating practical work. Using models for ecological engineering presents nevertheless difficulties, as well at the level of their conception and evaluation as at the level of their use at a reasonable data collection cost.