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Eutrophication  ppt
Eutrophication  ppt
Eutrophication  ppt
…..EUTROPHICATION
Eutrophication  ppt
Eutrophication  ppt
Compare these 2 ponds, the bottom
one experiencing eutrophication.
When lakes, streams
and estuaries are
over
fertilized, excessive
production of
aquatic
organic matter can
become a water
quality
problem and as a
result the
Eutrophication
process can be
enhanced!
However, humans in their everyday activities
can exacerbate the process:
Point sources (can locate the cause)
 Sewage treatment plant discharges
 Storm sewer discharges
 Industrial discharges
Non-point sources (can’t locate the cause,
it’s everywhere)
 Atmospheric deposition
 Agricultural runoff (fertilizer, soil erosion)
 Septic systems
Eutrophication  ppt
Eutrophication  ppt
1. Fertilizer flows into water
causing….
2. Increased plant growth on the surface
of
water, causing…..
3. Decreased light in lower levels of water,
causing…
4. Plants in lower levels of water
to die, causing….
5. Decay using up O2 and increasing
CO2,causing…...
6. Death of fish and other animals.
STEPS OF
EUTROPHICATION
Eutrophication  ppt
LACK OF OXYGEN
GROWTH OF BACTERIA
DEATH OF PLANTS
SUFFOCATION
GROWTH OF PLANTS
ADDITION OF NITRATES
Eutrophication process in 6 stages
Before increases in nutrients:Before increases in nutrients:
Acceleration of Eutrophication :
Results of Eutrophication :
These fish died due to Eutrophication
removing the oxygen.
Eutrophication  ppt
Photo 1: Algal bloom in a lake.
Algal bloom in a lake.
Fish
mortality
due to lack
of oxygen in
an
Indonesian
lake.
Algal
blooms,
otherwise called
"nuisance algae"
or "harmful algal
blooms",
are toxic to
plants and
animals
Eutrophication  ppt
Blue Baby Syndrome - An illness that begins when
large amounts of nitrates in water are ingested by
an infant and converted to nitrite by the digestive
system. He nitrite then reacts with ox hemoglobin
(the oxygen-carrying blood protein) to form
metheglobin, which cannot carry oxygen. If a large
enough amount of metheglobin is formed in the
blood, body tissues may be deprived of oxygen,
causing the infant to develop a blue coloration of
their mucous membranes and possibly digestive
and respiratory problems. This condition is also
known as methemoglobinemia.
: Overgrowth of floating aquatic plants.
Eutrophication can be avoided by using
minimal required amounts of chemical
fertilizers or better still do away with them and
use natural ones instead. Be sure not to have
the fields close to the water bodies. Take
extra care while using fertilizers during
monsoons as due to run - off, they get
transmitted to the water bodies. Then , they
can cause blockage of water ways, death of
marine life n breakage of food chain.
http://in.answers.yahoo.com/question/index?qi
d=20070303105817AANPIba
Eutrophication  ppt

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Eutrophication ppt

  • 7. Compare these 2 ponds, the bottom one experiencing eutrophication.
  • 8. When lakes, streams and estuaries are over fertilized, excessive production of aquatic organic matter can become a water quality problem and as a result the Eutrophication process can be enhanced!
  • 9. However, humans in their everyday activities can exacerbate the process: Point sources (can locate the cause)  Sewage treatment plant discharges  Storm sewer discharges  Industrial discharges Non-point sources (can’t locate the cause, it’s everywhere)  Atmospheric deposition  Agricultural runoff (fertilizer, soil erosion)  Septic systems
  • 12. 1. Fertilizer flows into water causing…. 2. Increased plant growth on the surface of water, causing….. 3. Decreased light in lower levels of water, causing… 4. Plants in lower levels of water to die, causing…. 5. Decay using up O2 and increasing CO2,causing…... 6. Death of fish and other animals. STEPS OF EUTROPHICATION
  • 14. LACK OF OXYGEN GROWTH OF BACTERIA DEATH OF PLANTS SUFFOCATION GROWTH OF PLANTS ADDITION OF NITRATES Eutrophication process in 6 stages
  • 15. Before increases in nutrients:Before increases in nutrients:
  • 18. These fish died due to Eutrophication removing the oxygen.
  • 20. Photo 1: Algal bloom in a lake. Algal bloom in a lake.
  • 21. Fish mortality due to lack of oxygen in an Indonesian lake. Algal blooms, otherwise called "nuisance algae" or "harmful algal blooms", are toxic to plants and animals
  • 23. Blue Baby Syndrome - An illness that begins when large amounts of nitrates in water are ingested by an infant and converted to nitrite by the digestive system. He nitrite then reacts with ox hemoglobin (the oxygen-carrying blood protein) to form metheglobin, which cannot carry oxygen. If a large enough amount of metheglobin is formed in the blood, body tissues may be deprived of oxygen, causing the infant to develop a blue coloration of their mucous membranes and possibly digestive and respiratory problems. This condition is also known as methemoglobinemia.
  • 24. : Overgrowth of floating aquatic plants.
  • 25. Eutrophication can be avoided by using minimal required amounts of chemical fertilizers or better still do away with them and use natural ones instead. Be sure not to have the fields close to the water bodies. Take extra care while using fertilizers during monsoons as due to run - off, they get transmitted to the water bodies. Then , they can cause blockage of water ways, death of marine life n breakage of food chain.