Phylogenetic community structure is a research area within ecology and evolutionary biology that focuses on studying the evolutionary relationships between species in a given community. This field seeks to understand how the evolutionary history of species influences their interactions and coexistence within a community, as well as the overall diversity and functioning of ecosystems. By examining the phylogenetic relationships between species, researchers can gain insights into the evolutionary processes that have shaped community composition and dynamics over time. This research area often involves the use of phylogenetic trees, which depict the evolutionary relationships between species based on genetic or morphological data. Phylogenetic community structure studies can help to inform conservation efforts, ecosystem management, and our understanding of biodiversity patterns across different habitats and regions.