Photo (c) L. Scheuermann
Substantial changes in natural environments increasingly raise population’s concerns. Therefore, governments from all over the world try to mitigate the consequences by international conventions, like e.g. the UN Convention on Biological Diversity (http://www.cbd.int/convention/text/) or the UN Framework Convention on Climate Change (http://unfccc.int/key_documents/the_convention/items/2853.php). These Conventions aim as a main action line at generating processes and disseminating knowledge. Its evaluation and application are of fundamental importance for achieving goals.