The presentation discusses microbial dynamics in eutrophication, which is primarily the result of excess nitrogen, phosphorus, and carbon in water bodies. It differentiates between natural eutrophication, a slow natural process, and cultural eutrophication, a rapid human-induced phenomenon that leads to water pollution. The document also addresses sources, ecological impacts, and scenarios of eutrophication globally and in specific regions, along with potential preventive measures.

1. WELCOME
TO OUR
PRESENTATION
-Presented by –
Group -3

2. We are Presenting…
Microbial Dynamics
in Eutrophication.

4. Eutrophication
“Eu”
Means Well
“Trope”
Means Nourishment
Derivation of the word “Eutrophication”

5.  From that sense Eutrophication refers to the over Nitrogen , Phosphorus and carbon in the water
bodies.
 From another sense eutrophication is the ultimate consequence of bacterial decomposition of
the green lives and further scarcity of oxygen and suffocation as well.
What is eutrophication ?

6. Types of Eutrophication
 There are two types of Eutrophication :
 Natural Eutrophication
 Cultural Eutrophication
Eutrophication
Natural Eutrophication
Cultural Eutrophication

7. Natural Eutrophication
 Eutrophication that is caused by the process of the nature not interfered by
human activities is termed as natural Eutrophication.
 The soft of the eutrophication takes many year to affect the water bodies in
a full force.
 Water bodies not near the industrial or human living places are affected by
such soft of Eutrophication.
Figure : Natural Eutrophication

8. Cultural Eutrophication
 It is a type of Eutrophication that is caused
by human activities.
 It is a rapid process as it takes only decades
to eutrify and ultimately pollutes the water.
So it is much more alarming than the
natural eutrophication.
 It is the process that speed up the natural
eutrophication process.

9. Sources of Eutrophication
Sources of
Eutrophication
Industrial
source
Power plant
Sewage
Treatment
Urban
sources
Agricultural
sources
Fossil fuel
sources
Forestry
land sources
Chemical
Fertilizers
Manure
Aquaculture

11. Steps of Eutrophication process
1. Fertilizer flows into water by the process of runoff.
2. Increasing plant growth on the surface of water.
3. Decreasing light in lower level of water.
4. Plant in lower levels of water to die.
5. Death of fish and other animal.

12. Ecological impacts
 Prevent the growth of other aquatic plants.
 Only the more tolerant animal species can survive due to
algal bloom.
 Turbidity of water increases.
 Release of cyanotoxins by cyanobacteria are recognized to
have caused the deaths of wild animals ,farm livestock , pets
fish and birds in many countries.
 Decreased oxygen levels can have a number of secondary
water quality impacts.

13. World’s Scenario of Eutrophication
The Potomac River , the fourth largest
river along the Atlantic coast and 21
largest in the United states
Lake Eria the fourth largest lake of the five great
lakes in the North America

14. World’s Scenario of Eutrophication
Lake Tai ,a largest fresh water lake in
the Yangize Delta plain near shanghai
, Chaina
Lake Naivasha located in Kenya

15. Bangladesh’s Scenario of Eutrophication
Gulshan Lake located at Dhaka City
A village pond ,located at Tangail.

16.  Fertilization balance for nitrogen and phosphorus.
 Prevention of erosion of sloping soil.
 Precise irrigation management and soil moisture control.
 Reuse and recycling of water in agriculture.
 Development of short living species of macrophytes.
Steps will be taken to protect healthy microbes –

17. THANKS A LOT

18. Group Members
SL No Names Roll No
1 Md.Mehedi hasan 17SES021
2 Nabila Nur Ena 17SES023
3 Maidul Islam 17SES024
4 Md.Naimur Rahman 17SES025
5 Md.Sumon Ali 17SES026
6 Aklima Akter 17SES027

19. HAVE YOU ANY QUESTION ?