I am an Ecologist interested in both basic and applied population and community ecology of both marine and terrestrial organisms. Along the population lines, I am interested in the effect that the spatial dynamics of populations have on population productivity and on limiting species geographic ranges. My research approaches have included large-scale data synthesis from museum and lab specimens, and from publications as well as large-scale field sampling of bird populations in forests of western Mexico and marine intertidal invertebrates along the NE Pacific coast. In collaboration with other scientists, I have used phylogeographic and mathematical approaches to understand the dispersal of marine invertebrates across their geographic range. I am also interested in expanding my research to ask questions related to patterns and processes in urban ecosystems.