The purpose of this research proposal is to analyze the changes to the Tahitian lexicon over time and connect these changes to the biocultural evolution of Polynesian communities on the island of Mo'orea in French Polynesia. Tahitian has an inherently dynamic and ever-changing lexicon, particularly as it pertains to language for flora and fauna, which are identified based on utility. Shifting socio-cultural and ecological realities have influenced and continue to influence human-environment relationships on Mo'orea, impacting the Tahitian vocabulary, as well. The aim of this research is to identify such points of evolution within the language via a data curation process from historical and contemporary sources, reviewed and supplemented by academic and local community experts.