Abstract: In Marine water, Assessing the spatiotemporal variations of water quality and Physico-chemical qualities of water is very important for water quality environmental management and it is critical for the health of biodiversity. Due to climatic change and over-exploitation, marine ecosystems are exposed to a range of environmental and anthropogenic stressors. Because of the rapidly changing world, the current knowledge on water availability across a range of spatial and temporal scales is still limited. The anthropogenic factors trigger the natural hydro-climatic variability and global changes so the water availability is changing both spatially and temporally. For water resources protection and its sustainable utilization, Spatiotemporal variation analysis of water quality and identification of water pollution sources in marine water is very important. The water quality monitoring studies on spatiotemporal variations focused on the physicochemical parameters as well as some biological factors including Dissolved Oxygen. Biological Oxygen Demand, Chemical Oxygen Demand, PH, Conductivity, Salinity, Temperature, Nitrogen, Turbidity, Dissolved Solids, Total Solids, Nitrates, Chlorides and Phosphates for scoring water quality status. This review article highlights the comparative study of the spatiotemporal variations in water quality.

Keywords: Spatiotemporal Variations, Water Quality, Physicochemical Parameters.

| DOI: 10.17148/IARJSET.2021.8577