RESEARCH INTERESTS Impacts of floods and hurricanes on tropical stream food webs. Drought impacts on terrestrial-freshwater linkages in temperate and tropical stream ecosystems. RESEARCH PROJECTS Since 1988 I have worked with colleagues in Puerto Rico on the effects of urban growth, harvesting of freshwater shrimps and crabs, and intersections of road networks on river networks. I am also collaborating with Brazilian colleagues in Campo Grande, Mato Grosso do Sul on food webs in karst streams that flow into the Pantanal.