Biogeochemical Cycles

SES1e

Recycling in the BiosphereRecycling in the Biosphere

VOCABULARYVOCABULARY

Biogeochemical CyclesBiogeochemical Cycles – Process in – Process in which elements, chemical compounds, and which elements, chemical compounds, and other forms of matter are passed from one other forms of matter are passed from one organism to another and from one part of organism to another and from one part of the biosphere to another.the biosphere to another.

Cycles in the EcosystemCycles in the EcosystemTopic: Topic: Cycles in Cycles in the the EcosystemEcosystem

What What causes causes matter to matter to cycle in cycle in the the ecosystemecosystem??

Information:Information:

Interactions of abiotic factors and Interactions of abiotic factors and biotic factors.biotic factors.Nutrients are passed between Nutrients are passed between organisms and the environment organisms and the environment through biogeochemical cyclesthrough biogeochemical cycles

Cycles of MatterCycles of MatterTopic: Topic: Cycles of Cycles of MatterMatter

How does How does energy flow energy flow differ from differ from cycles?cycles?

What are What are the cycles the cycles of matter?of matter?

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Unlike the one-way flow of energy, matter Unlike the one-way flow of energy, matter is recycled within and between is recycled within and between ecosystems.ecosystems.

Carbon CycleCarbon CyclePhosphorus cyclePhosphorus cycleSulfur cycleSulfur cycleNitrogen cycleNitrogen cycle

CARBON CycleCARBON Cycle

Carbon CycleCarbon Cycle http://www.youtube.com/watch?v=Sh

P5SUuTtJ0

Carbon CycleCarbon CycleTopic: Topic: Carbon Carbon CycleCycle

What moves What moves carbon carbon through its through its cycle?cycle?

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1.1. Carbon is cycled through the Carbon is cycled through the ecosystem by the biological processes ecosystem by the biological processes of photosynthesis, cellular respiration of photosynthesis, cellular respiration and decomposition.and decomposition.

2.2. Also by the Also by the geological processesgeological processes of of volcanic activity and erosion, and volcanic activity and erosion, and human activities such as mining and human activities such as mining and burning of fossil fuels.burning of fossil fuels.

Phosphorus CyclePhosphorus Cycle

Phosphorus CyclePhosphorus CycleTopic: Topic: Phosphorus Phosphorus CycleCycleWhere is Where is Phosphorus in Phosphorus in our our biosphere?biosphere?

Why is it Why is it essential to essential to living living organisms?organisms?

How do we How do we get the get the phosphorus phosphorus we need?we need?

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Phosphorus remains on land and in ocean Phosphorus remains on land and in ocean sediments as inorganic phosphates and is sediments as inorganic phosphates and is cycled through the ecosystem as plants cycled through the ecosystem as plants absorb phosphates in the soilabsorb phosphates in the soil

Phosphorus is needed by organisms as a Phosphorus is needed by organisms as a component of DNA. component of DNA.

The phosphate moves from producer to The phosphate moves from producer to consumer in the food webconsumer in the food web

Sulfur CycleSulfur CycleTopic: Topic: Sulfur CycleSulfur Cycle

Where is Where is Sulfur in our Sulfur in our biosphere?biosphere?

Why is it Why is it essential to essential to living living organisms?organisms?

How does it How does it get there?get there?

Information:Information:

Sulfur is mainly found on Earth as sulfates in rocks or as free sulfur

It kills molds and bacteria.

Sulfur is released into the atmosphere through the burning of fossil fuels

The Nitrogen CycleThe Nitrogen Cycle

VOCABULARYVOCABULARY Nitrogen CycleNitrogen Cycle – nitrogen moves slowly – nitrogen moves slowly

through the cycle and is stored in reservoirs through the cycle and is stored in reservoirs such as the atmosphere, living organisms, such as the atmosphere, living organisms, soils, and oceans along its way.soils, and oceans along its way.

Nitrogen CycleNitrogen CycleTopic: Topic: Nitrogen Nitrogen CycleCycle

Where is Where is all the all the nitrogen nitrogen on Earth?on Earth?

So, how So, how do we get do we get the the nitrogen nitrogen we need?we need?

Information:Information:

Approximately 80% is in the Approximately 80% is in the atmosphere. It is not useable for living atmosphere. It is not useable for living things.things.

Plants get nitrogen from soils and water. Plants get nitrogen from soils and water. Animals get nitrogen from eating plants Animals get nitrogen from eating plants or other animals that contain molecules of or other animals that contain molecules of nitrogen.nitrogen.

Nitrogen CycleNitrogen CycleTopic:Topic:Nitrogen Nitrogen CycleCycle

Information Pages:Information Pages:

How does How does the the Nitrogen Nitrogen get there?get there?

When organisms die, their bodies decompose When organisms die, their bodies decompose bringing the nitrogen into the soil on land or into bringing the nitrogen into the soil on land or into the oceans.the oceans.

SummarySummary: : We are now at the end of our topic We are now at the end of our topic “Biogeochemical Cycles” please write your summary now. 2 “Biogeochemical Cycles” please write your summary now. 2 Sentences ONLY.Sentences ONLY.

Wed, August 26, 2015 Wed, August 26, 2015 pg 12pg 12In:Complete “Water: The Incredible Journey” stories

EQ:Why don’t we run out of water?

“OUT”KAHOOT!!!

Homework:None today!