Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Nitrogen Cycle

No description
by

Connor Mori

on 11 November 2015

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Nitrogen Cycle

-Provides nutrients for plants to grow

-Is the base for making protein in animal bodies

- Makes up 78% of the mass in the atmosphere

-Adds pressure through the mass in the atmosphere, which stops suction from forcing the air out of our bodies
(Helps us breathe)

-Nitrogen is stored in many places but the biggest stores are in the atmosphere, large bodies of water, and in soil.
nitrogen-fixing bacteria in root nodules of legumes
Legumes are important plants because of their unique ability to host bacteria that can convert nitrogen into ammonium.

Legumes have roots with nodules that bacteria can live in.
Nitrogen-fixing bacteria is what actually converts nitrogen into ammonium, which is what helps the plant grow.

The bacteria also benefits, because the plant creates carbon and sugars in which bacteria needs.


plants
Atmosphere: Mainly N with traces of NH , NO, NO
Nitrogen Fixation
Nitrogen Fixation is the process of atmospheric nitrogen turning in ammonium.


NO, NO
2
2
NH
3
4
2
+
(Ammonium)
NH
3
N , NH , NO, NO ,NO
2
3
2
3
-
NH
3
N
2
ash
NO
3
-
ATMOSPHERIC FIXATION (lighting)
Dissolved NH , NO
SEDIMENTATION
UPTAKE BY PLANTS
4
+
3
-
NH , NO
4
+
-
3
N
2
NH
4
+
NO
2
-
NO
3
-
NITRIFICATION
NITROGEN FIXATION
NITRIFICATION
DENITRIFICATION
NH , NO
4
+
3
-
LEACHING AND RUNOFF
CONVERSION TO GAS
UPTAKE BY PLANTS
Animal Dies
The Nitrogen Cycle
What Is Nitrogen? Why is is important?
Fertilizer
Application
Nitrogen oxides
from transportation
and industry
Nitrogen-fixing
soil bacteria
sewage and fertilizers
Nitrifying
bacteria
Nitrifying
bacteria
Denitrifying
Bacteria
-The largest nitrogen store is found in the Atmosphere

-Smaller stores include waterways and land ecosystems
#1
Inside the Nodules are bacteria that convert the nitrogen to ammonium
Relationship of Bacteria and Legumes
Absorb Nutrients
Animals Eat The Plants
Decomposers return the carcass into ammonium
N
2
NH
4
+
Ammonium
Nitrogen
(Ammonium)
(Nitrite)
(Nitrate)
Nitrification has two stages. The first stage is ammonium turning into Nitrite through nitrifying bacteria.
The second stage is Nitrite to Nitrate
through other
species of nitrifying bacteria.
NO
2
-
NO
-
>
3
When soil with excess nutrients is mixed with water from rain, the nutrients are taken by the water and drained into lakes and rivers.
(Soil)
Plants get nutrients from the nitrifying bacteria, and from any type of fertilizers put in by humans.
The excess nutrients from the water promotes growth of algae blooms that take oxygen out of the water and blocks sunlight, as a result, many organisms are harmed. This process is called eutrophication.
Volcanoes release nitrogen into the atmosphere in the form of ash
Denitrification is the conversion of nitrates to nitrogen gas caused by denitrifying bacteria
NO
-
3
N
2
Atmospheric Fixation
Atmospheric Fixation is the process of nitrogen being broken up into molecules .

The nitrogen molecules can then bind with oxygen creating nitrate.

The nitrate that was created is then absorbed by precipitation in clouds.

Then the nitrate falls to the ground with the rain, and is ready to be used by plants.
Nitrate is the state of nitrogen usable directly by plants
Sedimentation is the separation of different substances in order of how heavy the material is

In this case the nitrogen is heavier than the water so it settles at the bottom of the body of water and is left there for to eventually be trapped in rock taking many years to return to the surface

Rock will eventually be worn down by weathering
Impact Made by Human Intervention
Humans have increased nitrogen content in the biosphere by 200% in the past 50 years

Millions of tonnes in nitrogen have been released into the atmosphere in the form of nitrogen oxide and nitrogen dioxide through burning fossil fuels and treating sewage

Nitrogen is released into the atmosphere through forest fires or the
burning of fossil fuels that are used in vehicles

Burning can result in the increase of acid precipitation as nitric acid (HNO3)


Cyanobacteria
Some species of this type of bacteria can change nitrogen into ammonium.
It uses photosynthesis to convert the nitrogen compounds into ammonium.
The ammonium will then be absorbed by plants in the surface waters of aquatic ecosystems.
N
2
NH
4
+
(Water)
Questions
Q1: Why is nitrogen important? / What is it used for?
Q2
:
What are the three ways that Nitrogen Fixation

Q3: What does NH
4
stand for? How does nitrogen
gas convert into it?
Q4: Name one human activity that causes harm to
the ecosystem.
Full transcript