Prioritisation in the Age of Invasion Science: From Risk Ranking to Adaptive Governance

Abstract

Biological invasions demand prioritisation frameworks that are rigorous, adaptive and actionable. Moving beyond species-level risk ranking, contemporary approaches integrate ecological, spatial and socio-political dimensions — evaluating where invasions are likely to occur, how they spread, what impacts they can generate, and which management interventions deliver the greatest return under constrained resources. Prioritisation thus becomes a critical bridge between ecological knowledge and operational decision-making. Recent methodological advances have expanded both the scope and resolution of these frameworks. Large-scale biodiversity data, species distribution models and scenario-based forecasting now enable anticipation of invasion dynamics under changing environmental conditions. Machine learning and automated workflows enhance real-time detection and prediction updating, while integration of remote sensing, citizen science and monitoring networks extends spatial and temporal coverage. These developments also expose persistent challenges around data quality, bias and interoperability that require explicit attention. A central challenge remains translating analytical complexity into policy-relevant outputs. Effective prioritisation depends as much on clarity and transparency as on methodological sophistication — ensuring results can meaningfully inform early-warning systems, regulatory reporting and local management decisions. Participatory approaches and stakeholder co-design are essential to align scientific outputs with governance realities. Prioritisation emerges not as a static tool, but as an adaptive, iterative and scalable process embedded within governance systems, capable of navigating uncertainty and underpinning timely, evidence-based responses to one of the defining environmental challenges of our time.