1. Institute of Limnology, Russian Academy of Sciences, 196105 Saint Petersburg, Sevastyanova 9, Russia
2. Department of Environment and Agro-biotechnologies (EVA), Public Research Center – Gabriel Lippmann, Rue du Brill 41, L-4422 Belvaux, Luxembourg
3. Independent Consultant, Calle Andrés Uzeda 0358, Colcapirhua, Cochabamba, Bolivia
4. MTA Centre for Ecological Research, Danube Research Institute, H-1113 Budapest, Karolina út 29, Hungary