Algae Arimao River basin Assemblages Aulacoseira Bacillariophyceae Bacteria Central Cuba Charophyta Chlorophyta Cores Correlation Cyanobacteria Cyanobacterial blooms Cyanophyceae Dams Diatoms Ecology Euglenida Euglenophyceae Eukaryotes Eutrophication Granulometry Hanabanilla Reservoir Hydrodynamics Hydrology Isotopes Lead Metals Microcystis Microfossils