Organismal and population ecology form the core of our research.  We study processes that drive individual differences in behavior and life history at local scales, and how patterns of individual performance result in patterns of abundance from local to regional scales. In an era of rapid global change, a key theme of our work is understanding patterns of variation along anthropogenic gradients ranging from the spread of invasive species, to increasing habitat fragmentation and isolation, to shifting climates.  Ultimately our work informs both fundamental ecological questions while helping solve problems related to the management and conservation of biodiversity and ecosystem processes.