Assessing biodiversity change in scenario studies : introducing a decision support tool for analysing the impact of nature policy

Biodiversity conservation is firmly established on the
political agenda. Nested goals and targets for biodiversity
have therefore been formulated and agreed at global,
regional, national and sub-national levels in order to halt
and reverse its decline. In order to measure progress in
relation to the delivery of such targets, policymakers have
a range of tools and indicators that allow them to monitor
and evaluate the effect of their policies, instruments and
associated actions. In terms of the policy cycle, evaluation
should result in the further modification and refinement of
policy instruments towards improved delivery in the
future.