In this paper we investigate an important obstacle which substantially complicates cooperation between ecologists and economists but which has received little attention so far: differences between the modelling approaches in economics and ecology. To understand these differences, 60 models...

Invasive species are one of the main reasons for the loss of biodiversity. Therefore, national strategies are developed to deal with biological invasions. Economic evaluation as a tool of policy advice has to take into account three challenges: (1) reflecting ecological knowledge, which is...

An assessment of the consequences of biological invasions and of the measures taken against must be at the base of each social decision in this field. Three forms of uncertainty can be distinguished that make such a decision difficult to take: (1) factual uncertainty, which encompasses not only...

Recent political developments and academic debate indicate that future political commitment to the protection of natural resources is uncertain. This political uncertainty is particularly problematic when the danger of irreversible damage such as the extinction of species looms. Accordingly,...