Dr. Marcelo Aizen graduated in biology at the Universidad de Buenos Aires in 1985 and obtained his PhD at the University of Massachusetts in 1992, At present he is “Investigador Superior” of CONICET (the National Research Council of Argentina) and professor at the ecology department of the Universidad Nacional del Comahue in Bariloche. His research has been focused on a diversity of basic and applied topics in plant reproductive ecology and plant-pollinator interactions, from the study of pollen tube-pistil interactions to global assessment of the so-called pollination crisis. He is author of more than 120 articles. Some of his research has been published in journals such as Science, Nature, PNAS, PloSBiology, and Current Biology, among others. In the last years, he and his group have been studied some of the consequences of the invasion of Bombus terrestris in Patagonia.