Freshwater ecology 78 Limnology 12 Congresses 7 Freshwater biology 5 Marine ecology 5 Textbooks 5 Water quality 4 Máis ... Water quality bioassay 4 Ecosystem management 3 Environmental aspects 3 Freshwater phytoplankton 3 Lake ecology 3 Marine phytoplankton 3 Phytoplankton 3 Water resources development 3 Benthos 2 Climatic changes 2 Control 2 Ecology 2 Freshwater productivity 2 Indicators (Biology) 2 Influence on nature 2 Insecticides 2 Man 2 Management 2 Measurement 2 Plants, Effect of insecticides on 2 Pollution 2 Toxicity testing 2 Toxicology 2 menos ...