Biljana Rimcheska - PhD student at Department of Aquatic Ecosystems, Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria. Current and previous research interests: Hydrobiology, macroinvertebrates, freshwater ecology, biodiversity, biotic indices, water quality assessment, monitoring and conservation of aquatic invertebrates, sustainable development and ecosystem services. Participation in national and international research projects involving freshwater ecosystems, biodiversity, conservation, water quality assessment, etc. Membership in scientific organizations: Croatian association of freshwater ecologists (CAFE), LTER, International Association for Danube Research (IAD).