1 Title: Temperature alters interspecific relationships among aquatic fungi Sofia Duarte, Isabel Fernandes, Maria João Nogueira, Fernanda Cássio and Cláudia Pascoal* Centre of Molecular and Environmental Biology (CBMA) Department of Biology, University of Minho Campus de Gualtar 4710-057 Braga Portugal *Email: cpascoal@bio.uminho.pt Telephone: 00351253601543 Fax: 00351253678980