The BIOTRAILS Nexus Scenario Simulator is a web-based decision-support tool that transforms complex Participatory System Dynamics Models (PSDM) into an interactive interface. Built for the Biodiversity-Climate-Society Nexus, it enables users to test policy and market interventions across four global value chains: Cocoa, Gold, Fisheries, and Aquaculture.

The simulator bridges the “accessibility barrier” of traditional scientific modelling, which usually requires specialised software and training. By providing an intuitive platform, it democratizes knowledge and mitigates “policy uncertainty.” Unlike static reports or simple dashboards, it features “Leverage Point Visualisation,” identifying areas where specific interventions trigger the most significant systemic change. This allows users to pre-test “what-if” scenarios, visualising long-term impacts and avoiding unintended consequences—such as a climate policy inadvertently harming biodiversity.

It targets EU/national policymakers, corporate sustainability leads, and NGOs.