[1] Uppsala Univ, Evolut Biol Ctr, Dept Ecol & Evolut, Erken Lab, SE-76173 Norrtalje, Sweden
[2] Leibniz Inst Freshwater Ecol & Inland Fisheries, D-12587 Berlin, Germany
[3] Swiss Fed Inst Aquat Sci & Technol Eawag, Water Resources Dept, CH-8600 Dubendorf, Switzerland
[4] Univ Dublin Trinity Coll, Sch Nat Sci, Ctr Environm, Dublin 2, Ireland
[5] Swedish Univ Agr Sci, Dept Environm Assessment, SE-75007 Uppsala, Sweden
[6] Lancaster Environm Ctr, Ctr Ecol & Hydrol, Lancaster LA1 4RA, England
[7] Univ Helsinki, Lammi Biol Stn, FIN-16900 Lammi, Finland
[8] Inst Marine, Newport, Co Mayo, Ireland
[9] Estonian Univ Life Sci, Inst Agr & Environm Sci, Ctr Limnol, EE-61101 Tartumaa, Estonia
[10] Univ Konstanz, Limnol Inst, D-78457 Constance, Germany
[11] Univ Vienna, Fac Life Sci, Dept Freshwater Ecol, A-1090 Vienna, Austria