Authors
Oskars Purmalis
Department of Environmental Sciences, University of Latvia, Riga, Latvia
Laura Grīnberga
Laboratory of Hydrobiology, Institute of Biology, Riga, Latvia
Linards Kļaviņš
Department of Environmental Sciences, University of Latvia, Riga, Latvia
Māris Kļaviņš
Department of Environmental Sciences, University of Latvia, Riga, Latvia