The Shrimp and Fish Ecology Laboratory (SFEL) at the University of Puerto Rico, Rio Piedras conducts research on the life history, ecology, evolution of freshwater organisms, and the limnology of stream ecosystems. We use a variety of approaches such as individual, population, community structure, toxicology, stable isotope analyses, field and laboratory experiments, GIS, and statistical techniques. Furthermore, we use habitat and shrimp, macro-invertebrates, and fish communities surveys and analysis tools to assess water quality and investigate anthropogenic perturbations' effects on freshwater communities and ecosystems. Topics of greatest interest are:

• life history strategies, environmental variation, and population dynamics

• food webs and trophic ecology

• species assemblage structure, environmental variation, and species functional traits

• species diversity, biogeography, and evolution

• effects of microplastics on the native and exotic organisms

• toxicology of pollutants on animal behavior.