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 "Profesor Titular" 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 pollinator declines and 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 the Buff-tailed bumblebee (Bombus terrestris) on the native biota of Patagonia and of bee invasions, in general, on agriculture. Interests: Plant-animal interactions . Pollination ecology . Plant reproductive ecology . Community Ecology . Biodiversity . Conservation . Coevolution