Abstract
In the field of conservation science, the availability of data and databases is a critical factor for successful research and practical work. Conservation researchers and practitioners should work towards addressing the existing deficiencies in data and database availability. In this review, I address the “data gap” in conservation science, focusing on three types of data: taxonomic, spatial and temporal. I then analyse “S-Net,” a widely used biodiversity database, to evaluate current data gaps in Japan. Finally, I discuss several approaches to overcoming these challenges.