Population structure is a field of study in ecology and evolutionary biology that focuses on the distribution and organization of individuals within a population. This includes examining factors such as population size, density, dispersion, and spatial distribution. Population structure can provide insights into the genetic diversity, gene flow, and evolutionary dynamics of a population, as well as the interactions between individuals and their environment. Researchers in this area often use a combination of field observations, genetic analysis, and mathematical models to understand the patterns and processes that shape population structure.