Summary
This paper reviews different tools that aim to help businesses monitor their impact on biodiversity. The tools are compared through a literature review and interviews with the tool developers. The paper analyses how tools are constructed, which elements of biodiversity they measure and how they align with International targets. The authors find that the tools under review perform a range of important functions, including assessing business impacts on biodiversity, but more work needs to be done to align with global biodiversity goals and to develop common metrics.