Blackwater (waste) Limbah Hitam Eutrophication Eutrofikasi Fish Ikan Freshwater Air Tawar Hydrosphere Hidrosfer Limnology Limnologi Mangrove Hutan Bakau Mud Lumpur Phytoplankton Fitoplankton Plankton Plankton Salinity Salinitas Seawater Air Laut Water Pollution Pencemaran Air Zooplankton Zooplankton