What Is Eutrophication | Agriculture | Biology | FuseSchool

What Is Eutrophication | Agriculture | Biology | FuseSchool

What happens when fertilisers get washed into lakes and rivers? A process called eutrophication. Learn all about it in this video.

Eutrophication is the process that can happen in a water body, like a river or a lake, when too many nutrients are added to the system.

Eutrophication starts with fertilisers, which are rich in nutrients like nitrate and phosphate, are washed into the river or lake system. This leads to an increase in nutrient concentrations in the water. The nutrients are food for algae. The algae grow and reproduce quickly, forming a thick green bloom in the water. This algal bloom will absorb sunlight shining on the water so the sunlight can't reach the bottom. Plants who need this light to photosynthesis will die. The algae will also start to die when they eat up all of the nutrients and run out of food.

Next, bacteria start to breakdown the dead plants and algae. That releases more nutrients back into the water continuing the Algal Bloom Cycle. The bacteria, with a continuing supply of food, reproduce into much larger numbers consuming oxygen as they grow and respire.

There is not much oxygen in the water to begin with so when the bacteria consume it quickly it might run out completely. Water without oxygen is called Anoxic. If the water turns anoxic, all non-bacterial life in the water, including fish and other animals, will die.

So, eutrophication happens when nutrients are added to water which causes an algal bloom, cutting off sunlight and feeding bacteria. The bacteria use up oxygen in the water which becomes an anoxic, causing everything living in the water to die.

Eutrophication is one reason why we need to be careful with fertilisers when we are growing crops.

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[jwalanttravadi]

I got eutrophication process in just 1:54 min.
THANK YOU

[leopachis]

I probably would fail my exam without this, really useful

[anonymous-vvcg]

Our teacher didnt get the time to explain it properly and I was still confused ....not anymore! you explain it so well! Thank you :)

[MultiDiscoMonkey]

This explains it so simply and well. Thank you!
 The sun's psycho smile is creepy though :-p

[ginasverige]

Thank you for this clear and straight to the point explanation. This is how teaching should be done!

[mintii]

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[mohideenali]

Who are watching this for tomorrow's exam?

[abodeyabyad]

I love how you keep everything simple..

[dakshmota]

Thank you so much. This was a great video that helps me understand eutrophication. The video was short, sweet, and explanatory.

[skmonie]

Brief and simple. Thank you, I need this for my exam tomorrow. 

[sujitdey]

I would like to rate this explanation 6 on 5 stars as the information was literally awesome and very simple....

[troller]

for everyone using this as an example for a project, or exam here is all the text.

Eutrophication is the process that can happen in a water body, like a river or a lake, when too many nutrients are added to the system. Eutrophication starts with fertilizers, which are rich in nutrients like nitrate and phosphate, are washed into the river or lake system. This leads to an increase in nutrient concentrations in the water. The nutrients are food for algae. The algae grow and reproduce quickly, forming a thick green bloom in the water. This algal bloom will absorb sunlight shining on the water so the sunlight can't reach the bottom. Plants who need this light to photosynthesis will die. The algae will also start to die when they eat up all of the nutrients and run out of food. Next, bacteria start to breakdown the dead plants and algae. That releases more nutrients back into the water continuing the Algal Bloom Cycle. The bacteria, with a continuing supply of food, reproduce into much larger numbers consuming oxygen as they grow and respire. There is not much oxygen in the water to begin with so when the bacteria consume it quickly it might run out completely. All non-bacterial life in the water, including fish and other animals, will die. So, eutrophication happens when nutrients are added to water which causes an algal bloom, cutting off sunlight and feeding bacteria. The bacteria use up oxygen in the water which becomes anoxic, causing everything living in the water to die. Eutrophication is one reason why we need to be careful with fertilizers when we are growing crops.

Ur welcome

[TechSolutionDesk]

Very well explained. It helped me understand the system well and answer my exam question! Thank you very much...

[zoobihan]

I never thought something like this could be made so interesting.
This was a great video, I'm definitely subscribing! :)

[shaliabun]

Wonderful video! Very simple, but it's quick to the point and has all of the important details!

[nayw.]

Thanks man, got a test in 3rd period. This pry just saved me

[gulab_sahu]

Thank you sir. I had watched so more vdo but no well explanation like this.

[willmapus-smith]

Really exciting video, edge of your seat stuff.

[jhukiraman]

thank you...
best video to understand eutrophication...&...to remember forever....👏

[asimabibi]

An amazing understanding in just 2 minutes.🥰😍

Thank you Soo much