9. Biodiversity-Related Sustainability-Linked Bonds

This chapter delves into the critical issue of biodiversity loss and the financial mechanisms needed to address it. It introduces Biodiversity-Related Sustainability-Linked Bonds (BrSLBs) as a novel financial instrument designed to mobilize capital for biodiversity preservation. The chapter presents a comprehensive pricing model for BrSLBs, which considers both key performance indicators (KPIs) and the issuer's credit risk, offering a more accurate valuation of these bonds. It also explores the concept of the 'bio-sustainium,' the yield differential between ordinary bonds and SLBs, and discusses how the dependence structure between credit risk and environmental performance impacts the bond yield. The chapter provides a survey of the main KPIs with a biodiversity focus, highlighting the importance of these indicators in structuring BrSLBs. Furthermore, it examines the optimal design of BrSLBs to attract investors and issuers, emphasizing the role of innovative finance in mobilizing the large amount of funding needed to preserve biodiversity and natural resources. The chapter concludes by discussing the potential of BrSLBs to align the interests of issuers and investors with biodiversity and nature-related performance, offering a practical avenue for achieving ambitious biodiversity targets.