1. Landscape Ecology DepartmentNorwegian Institute for Nature Research Oslo Norway
2. Department of BiosciencesUniversity of Oslo Oslo Norway
3. Latvian Institute of Aquatic Ecology Riga Latvia
4. Biological FacultyMoscow State University Moscow Russia
5. Laboratory of Ecology of Aquatic Communities and InvasionsA.N. Severtsov Institute of Ecology and Evolution Moscow Russia
6. Laboratory of SynecologyA.N. Severtsov Institute of Ecology and Evolution Moscow Russia
7. Papanin Institute for Biology of Inland Waters Russian Academy of Sciences Borok Russia
8. School of BiosciencesUniversity of Birmingham Birmingham UK
9. Department of Arctic BiologyThe University Centre in Svalbard Longyearbyen Norway
10. Department of BiologyUniversity of Copenhagen Copenhagen Denmark