My program is best described as evolutionary ecology and conservation biology of amphibians and reptiles. I use reptiles and amphibians as study systems at the community and landscape level to address the general questions, "What are mechanisms influencing the fit between organism and environment?", and "How do community-level processes influence species persistence and distribution of species across the landscape?" This program addresses various conservation issues, for example, habitat requirements of single species, determinants of local and regional diversity, or mechanisms determining the fate of invasive and native species.