Title: Measuring biological parameters in rivers: relevance of the spatial scale Event: Invited Conference at the Third International Meeting on Environmental Biotechnology and Engineering (3IMEBE) Date: 01/09/2008 Place: Palma de Mallorca, ESPANYA Title: Extracellular enzymes in aquatic biofilms: microbial interactions vs water quality effects in the use of organic matter Event: Invited Conference at the International meeting: Enzymes in the Environment: Activity, Ecology and Applications Date: 01/07/2007 Place: Viterbo, ITÀLIA Title: Fungal-bacterial interactions during leaf litter decomposition Event: Talk, Institute of Aquatic Ecology Date: 20/01/2005 Place: Girona, ESPANYA Title: Structure and metabolism of river biofilm and their implications for organic matter dynamics Event: Talk at the Evolutionary Biology Center, Limnology Department, Uppsala Date: 01/09/2004 Place: Uppsala, SUÈCIA Title: Estructura i metabolisme del biofilm fluvial i les seves implicacions en la dinàmica del carboni orgànic dissolt. Els enzims extracel•lulars com a eina metodològica. Event: Invited conference at the II Jornades d’Avenços en Ecologia (Centre d’Estudis Avançats de Blanes, CEAB, CSIC i Institut d’Estudis Catalans) Date: 11/11/2003 Place: Blanes, ESPANYA Title: Response of fluvial biofilms to nutrient addition. Event: Talk, Institute of Aquatic Ecology Date: 01/03/2003 Place: Girona, ESPANYA Title: Patterns of algal and bacterial colonization during epilithic biofilm formation Event: Talk, Institute of Aquatic Ecology Date: 01/03/2002 Place: Girona, ESPANYA Title: Influence of algal biomass on extracellular enzyme activity in river biofilms Event: Talk at the Limnologische FlussStation des Max-Plank-Instituts für Limnologie Date: 01/11/1995 Place: Schlitz , ALEMANYA