I use decision theory and operations research to improve the outcomes achieved for biodiversity from conservation management. Ecological systems are incredibly complex, and changing how those systems interact and evolve can have unexpected implications. I build mathematical models of coupled ecological, land-use, and economic systems to understand the mechanisms driving success, failure, and efficiency of management actions. Carefully, transparently, and defensibly planning management and policy interventions while acknowledging those complexities and the associated risks helps achieve better outcomes for the environment and society.