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♤ Eutrophication may cause the ecosystem competitive by transforming the normal limiting nutrient to abundant level. This cause shifting in species composition of ecosystem
Toxicity
♤ Some algal blooms when die or eaten, release neuro & hepatotoxins which can kill aquatic organism & pose threat to humans. (e.g) Shellfish poisoning.
♤ Depletion of dissolved oxygen level.
♤ Increased incidences of fish kills & loss of desirable fish species & reduction in harvesting
♤ Loss of coral reefs.
♤ Decrease in water transparency and increased turbidity.
♤ Affects navigation due to increased turbidity.
♤ Colour (yellow, green, red), smell and water treatment problems.
♤ Increased biomass of inedible toxic phytoplankton
♤ Increase in bloom of gelatinous zooplankton
♤ Increased biomass of benthic and epiphytic algae
♤ Unsuitable for aesthetic recreation, and reduction in value of water body
Do you know?
The world’s tallest tree is a coast redwood in California, measuring more than 360 ft or 110 m.