Continuous field assessments and data sharing to rationalize the IUCN's impact in mammal conservation: a case study of Rwanda

Taxonomic work, conservation practice, and Red List assessments from the International Union for Conservation of Nature (IUCN) are intricately linked. The primary conservation goal for biodiversity is to halt the factors driving local extinctions of species. While many mammal surveys focused on establishing species checklists for each country, differences or changes in taxonomic names over time, and gaps in research data mobilization, make it challenging to harmonize checklists and use this information in conservation practice. Our objective was to evaluate the role of regular taxonomic updates and data mobilization for mammals to support species conservation work. We reviewed the literature and recent field records (2009–2024) of the mammals of Rwanda, a country in East Africa. We compared them with the current IUCN Red List records for that country, complementing and validating species with further data from the Mammal Diversity Database (MDD). We identified 38 novel records of mammal species that need to be updated in the IUCN Red List to reflect their presence in Rwanda, including records upgraded to the species level from recent taxonomic publications. Following the gaps identified in the IUCN Red List, we highlighted how regular assessments and updates from mammal scientists can fill them, by updating scientific names and country legends. Our study suggests that further collaboration is needed between the IUCN and experts with taxonomists across groups to ensure regular updates for species assessment criteria and data. Such assessments will continue to provide data to rationalize timely updates and re‐evaluations of species status, which will be most imperative for species tagged as ‘Data Deficient'. We urge scientists to promptly update and disseminate similar findings on mammals, along with evidence‐based records, to support conservation efforts. Our observations and recommendations should extend beyond the mammalian taxon and the country used as a case study.