Nutrient Cycles Page 1 Nutrient Cycles the earth

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Nutrient Cycles Page 1

Nutrient Cycles Page 1

Nutrient Cycles • the earth is a closed system – matter and energy are

Nutrient Cycles • the earth is a closed system – matter and energy are continually recycled Page 2

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Page 3

A closed System • Biosphere II today Page 4

A closed System • Biosphere II today Page 4

A closed system • Biosphere I Page 5

A closed system • Biosphere I Page 5

• the availability of nutrients can be increased or decreased due to human

• the availability of nutrients can be increased or decreased due to human activity – thus the balance is altered – this imbalance compromises sustainability Page 6

SUSTAINABILITY The Impacts of Human Activities Page 7

SUSTAINABILITY The Impacts of Human Activities Page 7

~ Eutrophication ~ Fertilizers in the Environment! Page 8

~ Eutrophication ~ Fertilizers in the Environment! Page 8

Eutrophication animation Eutrophication is a process in which nutrient levels in aquatic ecosystems increase.

Eutrophication animation Eutrophication is a process in which nutrient levels in aquatic ecosystems increase. Eutrophication can lead to increased numbers of primary producers (algae) Page 9

Eutrophication Cultural Eutrophication – the process is accelerated due to human activities Page 10

Eutrophication Cultural Eutrophication – the process is accelerated due to human activities Page 10

Factors that influence Eutrophication Fertilizers and nutrients enter an ecosystem intentionally or accidentally: Example

Factors that influence Eutrophication Fertilizers and nutrients enter an ecosystem intentionally or accidentally: Example (intentionally) : Sewer system running into a river Example (accidentally) : Run off from agricultural land Page 11

Nitrogen and phosphorus are the two elements most responsible for eutrophication. nitrates nitrites ammonia

Nitrogen and phosphorus are the two elements most responsible for eutrophication. nitrates nitrites ammonia phosphates Page 12

Human Factors that Influence Eutrophication: Nitrogen Concentrations Septic Systems Phosphorus concentrations Septic systems Detergents

Human Factors that Influence Eutrophication: Nitrogen Concentrations Septic Systems Phosphorus concentrations Septic systems Detergents Fertilizer run off Animal excrements Industrial wastes Animal wastes Paving and development Industrial waste Water treatment plants Fossil fuels Forest fires Synthetic materials Page 13

What are the effects of Eutrophication? - Algal bloom - Low oxygen levels for

What are the effects of Eutrophication? - Algal bloom - Low oxygen levels for aquatic organisms - Animal Mutations and death Page 14

To Do: Read Pages 302 -303 -Complete the back of your sheet of notes

To Do: Read Pages 302 -303 -Complete the back of your sheet of notes Page 15

• Answers to text questions • Science in the News! – Video –

• Answers to text questions • Science in the News! – Video – Battling the Bloom – Lake Erie Page 16

• Video – Sick Fish, Eutrophication and Dead Zones Page 17

• Video – Sick Fish, Eutrophication and Dead Zones Page 17

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NUTRIENT CYCLES GEOCHEMICAL CYCLES Movement of a particularNUTRIENT CYCLES GEOCHEMICAL CYCLES Movement of a particular
APES Biogeochemical Cycles Nutrient Cycling Biogeochemical Cycles nAPES Biogeochemical Cycles Nutrient Cycling Biogeochemical Cycles n
Cycles of Life and Death Nutrient Cycles SustainableCycles of Life and Death Nutrient Cycles Sustainable
Biogeochemical Cycles Nutrient Cycles La materia se reciclaBiogeochemical Cycles Nutrient Cycles La materia se recicla
Nutrient Cycles The Water Cycle 1 Water cyclesNutrient Cycles The Water Cycle 1 Water cycles
Nutrient Cycles aka Bio Geo Chemical Cycles NUMBERNutrient Cycles aka Bio Geo Chemical Cycles NUMBER
Nutrient Cycles Chapter 16 Ecosystems I Biogeochemical CyclesNutrient Cycles Chapter 16 Ecosystems I Biogeochemical Cycles
Earth Geology Earth Earth Earth topography redmountain bluedepressionEarth Geology Earth Earth Earth topography redmountain bluedepression
0 Business Cycles Business Cycles Business cycles are0 Business Cycles Business Cycles Business cycles are
Biogeochemical Cycles Phosphorus Biogeochemical Cycles The great cyclesBiogeochemical Cycles Phosphorus Biogeochemical Cycles The great cycles
Energy Flow Cycles Element Cycles BIOGEOCHEMICAL CYCLES MatterEnergy Flow Cycles Element Cycles BIOGEOCHEMICAL CYCLES Matter
0 Business Cycles Business Cycles Business cycles are0 Business Cycles Business Cycles Business cycles are
Cycles Cycles CYCLES CONNECTIONS Water Cycle Nitrogen CycleCycles Cycles CYCLES CONNECTIONS Water Cycle Nitrogen Cycle
CYCLES IN NATURE Biogeochemical cycles Cycles in whichCYCLES IN NATURE Biogeochemical cycles Cycles in which
0 Business Cycles Business Cycles Business cycles are0 Business Cycles Business Cycles Business cycles are
NUTRIENT CYCLES The Earth is a self containedNUTRIENT CYCLES The Earth is a self contained
NUTRIENT CYCLES The Earth is a self containedNUTRIENT CYCLES The Earth is a self contained
Cycles of the Earth Biogeochemical Cycles Dead ZoneCycles of the Earth Biogeochemical Cycles Dead Zone
Cycles of the Earth Biogeochemical Cycles Sulfur CycleCycles of the Earth Biogeochemical Cycles Sulfur Cycle
Cycles of the Earth Biogeochemical Cycles Nitrogen CycleCycles of the Earth Biogeochemical Cycles Nitrogen Cycle
BIOCHEMICAL CYCLES Living cycles Earth Biosphere Carbon cycleBIOCHEMICAL CYCLES Living cycles Earth Biosphere Carbon cycle
Earth Patterns Cycles and Change Rotation The EarthEarth Patterns Cycles and Change Rotation The Earth
Earth Cycles Techno Stars Lab Houston Academy EarthEarth Cycles Techno Stars Lab Houston Academy Earth
Revision Index Page 2 Page 9 Page 16Revision Index Page 2 Page 9 Page 16