sažetak izlaganja sa skupa
Phytoplankton is considered as one of the key elements for assessing ecological status and water quality in large lowland rivers. Surface samples were taken monthly (from April till September 2010) from the middle of river at nine locations of four Pannonian rivers: Mura, Drava, Danube and Sava. We analysed temporal and spatial changes in phytoplankton community in relation to density, biomass, richness, species diversity and dominance. We related the changes to water physical and chemical variables and hydrological regime. Bacillariophyceae represented the dominant class in all investigated aspects of the phytoplankton community. Community structure changed consequently upstream by decreasing species diversity and increasing dominance of Bacillariophyceae. Results presented in this contribution confirm the role of phytoplankton as one of the five biological elements which are fundamental for assessing ecological status and water quality of the investigated rivers in relation to human impact.
river phytoplankton ; hydrological regime ; ecological status ; Pannonian ecoregion
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