My main research interests are in the distribution, structure, and function of ecological communities and particularly how these relate to a changing environment. Specifically, I examine how community characteristics (e.g., species diversity, community structure, dominance, abundance, and biomass) respond to changes in environmental conditions. Such changes often have large impacts on human resource use. Moreover, in order to understand how ecosystems function and persist, it is necessary to know how ecological communities are distributed and the factors that affect them. It is important to evaluate biodiversity, community structure, and the associations of species to assess the status of communities, especially since communities are often vulnerable to impacts related to environmental change and anthropogenic disturbances.