When water becomes low in dissolved oxygen, sediments end up releasing phosphate in the water columns. This creates a perfect environment for the growth of algae.
Blooms of blue–green algae can also occur when the concentration of nutrients is fairly low, but blooms are more frequent when the concentration of nutrients is high.
For more relevant articles refer to the links given below:
- UPSC Environment and Ecology Questions
- Environment & Ecology Trend Analysis: UPSC Strategy
- UPSC Environment and Ecology
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