Topics: Water Quality Management, Pollution Control, water bodies physical composition, water chemistry, Nutrient Cycles, water biological characteristics, sampling methods, Water Quality Standards, water pollution control, Water Quality Monitoring, Nitrification, Denitrification, Anaerobic ammonium oxidation, Nitrogen mineralisation, Carbon Cycle, Phosphorus Cycle, Iron Cycle, Silica Cycle, Marine Dead Zones, bacteria, protozoa, Manual Sampling, grab sampling, Integrated sampling, Automatic Sampling, Mechanical Samplers, Physical Habitat Assessments, Turbidity, salinity, Total oxidised nitrogen, Total organic nitrogen, Total Kjeldahl nitrogen