algae 6 humic lake 6 Phytoplankton 4 macrophyte 4 periphyton 4 phytoplankton 4 Argentina 2 Bacillariophyceae 2 Bacillariophyta 2 Buenos Aires [Argentina] 2 Chlorophyta 2 Cryptophyta 2 Cyanobacteria 2 Diversity patterns 2 Epiphyton 2 Euglenida 2 Floodplain wetland 2 Humic lake 2 Humic shallow lakes 2 Otamendi Natural Reserve 2 P-E curves 2 Parana Basin 2 Periphytic algae 2 Periphyton 2 Primary production 2 Ricciocarpos natans 2 Ricciocarpus natans 2 Schoenoplectus californicus 2 Shallow lake 2 South America 2