The Phenomenon of Algal Bloom Problem of Water Resources

Red tide is an algal bloom phenomenon which causes a lack of oxygen in the deeper water layers and with consumption of oxygen in the water, conditions for growth and aquatic life will be very hard and also can cause fish death. Algal bloom is a very complex phenomenon. In some cases, it has quite natural origin and sometimes it is occurred due to anthropogenic activities. In the absence of anthropogenic cause of this phenomenon, there are varieties of factors such as wastewater, agricultural and industrial wastewaters which contains Nitrate and Phosphate and in large quantities used in agricultural fertilizers; important factors affecting the aquatic environment are exacerbated in low-oxygen conditions. Also increase in greenhouse gases, Iron-rich dust, hydrological factors and massive changes in global climate, handling and transport of non-indigenous species through ballast water of ships and many unknown factors are affecting on occurrence of the red tide. Algal bloom could affect the fishes, aquatic organisms, and also could have negative effects on economy and health of the local peoples in the affected region.