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1. The Effects Of
Aquatic Species
By: Niranjana

2. Effects of aquatic species
• Water pollution kills life that depends on these water
bodies.
• Fishes and the aquatic organisms are poisoned due to
industrial chemicals and agricultural pesticides.
• Humans litter let into water system kill the aquatic
animals caught and can get killed due to suffocation.
• Oil spills in water causes aquatic animals to die as they
ingest it or come across it.

3. • Animals that eat dead fish from contaminated
streams are affected.
• Fish, birds, dolphins and many other animals are
killed by pollutants in their habitat.
• Reproduction rate in reduced in aquatic organisms.

4. Effects Of Industrial Effluents On
Aquatic Life
• Untreated industrial waste discharged into water
bodies have resulted in eutrophication of aquatic
ecosystem as evidence by substantial algal bloom
leading to dissolve oxygen depletion and
eventually massive mortality of fish and other
organisms.
• Industries like textile producing factory, paper
manufacturing plants, oil refinery, brewery and
fermentation factory and metal producing
industries discharge their wastes into the aquatic
ecosystem.

5. • These industrial wastes contain pollutants like acids, heavy
metals, oil, cyanide, organic chemicals, pesticides,
polychlorinated biphenyls, dioxins etc. Some of these
pollutants are carcinogenic, mutagenic and teratogenic while
some are poisonous depending on the level of exposure and
intake by aquatic organisms and man.
• These pollutants affect the biological growth and
reproduction of fishes in the aquatic ecosystem thereby
reducing the amount of captured fishes.
• Fish and other aquatic lives face total extinction due to
destruction of aquatic lives and natural habitats by pollution
of water bodies.
• Effluents and wastes produced by industries should be
minimised by using low and non-waste technologies; and
effluents should be properly treated before they are
discharged into aquatic environment.

6. Extras
Effects of water pollution
in humans and animals

7. Effects on humans
• Diseases caused by:
 Drinking contaminated water
 Swimming in polluted water
 Contact with chemically polluted water

8. Effects on animals
Facts about polluted water
 200 turtles in Australia’s surround waters die
each yr.
 Birds and mammals become coated with oil

9. Different causes of water
pollution
 Marine dumping
 Industrial waste
 Sewage, mainly from households
 Nuclear waste
 Underground storage leaks