1. Department of Biological and Environmental Science; University of Jyväskylä; Jyväskylä Finland
2. Faculty of Biological and Environmental Sciences, Ecosystems and Environment Research Programme; University of Helsinki; Lahti Finland
3. Institute of Earth Surface Dynamics; University of Lausanne, UNIL Mouline; Lausanne Switzerland
4. Département des Sciences Fondamentales; Groupe de Recherche Interuniversitaire en Limnologie et en environnement aquatique (GRIL); Centre for Northern Studies (CEN); Université du Québec à Chicoutimi; Saguenay Quebec Canada