Freshwater 133 Marine & Freshwater Sciences 133 Marine sciences 133 Aquatic ecology  52 Freshwater & Marine Ecology 52 Oceanography 22 Ecology  20 más ... Environmental management 20 Climate change 19 Fish 19 Fish & Wildlife Biology & Management 19 Wildlife 19 Coastal Sciences 18 Coasts 18 Environmental Management 17 Water pollution 15 Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 14 Climate Change/Climate Change Impacts 13 Ecology 13 Ecosystems 13 Environmental Chemistry 11 Environmental chemistry 11 Climate Change 10 Biodiversity 9 Physical geography 8 Conservation Biology/Ecology 7 Conservation biology 7 Environmental monitoring 7 Geochemistry 7 Invertebrates 7 menos ...