Research professor at the Institute of Marine Sciences (CSIC, Barcelona, Severo Ochoa Centre) (Spain). Microbial ecologist with an interest in aquatic systems: lakes, rivers, and the ocean. PhD in Biology from the Autonomous University of Barcelona. Microorganism research coordinator in the Malaspina campaign. Editor of the third edition of the book Microbial ecology of the oceans and the popular science book Microbios en acción: Biodiversidad invisible con efectos muy visibles.