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...

In der politischen Diskussion werden für den Erhalt der biologischen Vielfalt in der Regel ökonomische Argumente vorgebracht: Biodiversität sollte als ökonomisches Gut betrachtet werden. Dem Rückgang der Vielfalt sei entgegenzutreten, indem man die Auswirkungen menschlicher Aktivitäten auf...

Flexible conservation management, where measures are selected in each decision period and depending on the current state of the ecological system, are generally perceived as superior to fixed management, where the same measure is applied in each decision period independent of the current state...