Carbon cycle – units = Gt C = 10 15 g C

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Carbon cycle units Gt C 10 15 g C
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Carbon dioxide
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Pathways of Nitrogen
N2 Molecular Nitrogen
Denitrification Via NO, N2O
Nitrogen Fixing
NH4 Ammonium ion / Ammonia
NO2-1 Nitrite
Nitrification
Nitrification
Denitrification
Ammonification
Amino Acids Organic Nitrogen
Assimilation
NO3-1 Nitrate
Assimilation
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Nitrogen Fixing
N2 Molecular Nitrogen
Denitrification Via NO, N2O
Nitrogen Fixing
NH4 Ammonium ion / Ammonia
NO2-1 Nitrite
Nitrification
Nitrification
Denitrification
Ammonification
Amino Acids Organic Nitrogen
Incorporation
NO3-1 Nitrate
Assimilation
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Nitrification
Denitrification Via NO, N2O
N2 Molecular Nitrogen
Nitrogen Fixing
NH4 Ammonium ion / Ammonia
NO2-1 Nitrite
Nitrification
Nitrification
Denitrification
Ammonification
Amino Acids Organic Nitrogen
Incorporation
NO3-1 Nitrate
Assimilation
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Nitrification

• NO2-1 -gt NO3-1 and NH4 -gt NO2-1
• Oxidizing nitrogen
• Nitrosomonas
• and Nitrococcus

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Incorporation/Assimilation
Denitrification Via NO, N2O
N2 Molecular Nitrogen
Nitrogen Fixing
NH4 Ammonium ion / Ammonia
NO2-1 Nitrite
Nitrification
Nitrification
Denitrification
Ammonification
Amino Acids Organic Nitrogen
Assimilation
NO3-1 Nitrate
Assimilation
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Ammonification
Denitrification Via NO, N2O
N2 Molecular Nitrogen
Nitrogen Fixing
NH4 Ammonium ion / Ammonia
NO2-1 Nitrite
Nitrification
Nitrification
Denitrification
Ammonification
Amino Acids Organic Nitrogen
Incorporation
NO3-1 Nitrate
Assimilation
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Denitrification
Denitrification Via NO, N2O
N2 Molecular Nitrogen
Nitrogen Fixing
NH4 Ammonium ion / Ammonia
NO2-1 Nitrite
Nitrification
Nitrification
Denitrification
Ammonification
Amino Acids Organic Nitrogen
Incorporation
NO3-1 Nitrate
Assimilation
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Human impacts on the Earths ecosystems
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Biotic addition and loses
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Land transformation
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Global biochemistry
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Climate change
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Ecosystem services
Definition refers to all the processes through
which natural ecosystems and the species they
contain help sustain human life on this
planet. Examples Purification of air and
water, mitigation of droughts and floods,
generation and preservation of soils and soil
fertility, detoxification and decomposition of
wastes, pollination of crops and natural
vegetation, dispersal of seeds