Development of Denitrifying and Nitrifying Bacteria and Their Co-occurrence in Newly Created Biofilms in Urban Streams

Timothy Nicolaas Vaessen1, Eugenia Martí Roca1, Gilles Pinay2 and Steffi N Merbt3, (1)CEAB-CSIC, Girona, Spain, (2)OSUR-ECOBIO-CNRS UMR 6553 - Université Rennes 1, Rennes, France, (3)Eawag, Environmental Toxicology, Dübendorf, Switzerland