ecology notes – part 2: cycling of matter in ecosystems biology spring 2012 biology spring 2012
TRANSCRIPT
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Ecology Notes – Part 2:
Cycling of Matter in Ecosystems
Ecology Notes – Part 2:
Cycling of Matter in Ecosystems
BiologySpring 2012
BiologySpring 2012
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Your last meal
•List all of the things you consumed during your last meal.
•Mrs. Slater’s breakfast = peanut butter granola bar, banana, nonfat milk, iced nonfat vanilla latte
•For each item, determine where the materials & energy in that food came from.
•Work “backwards” if you ate something that also ate food to live.
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Mrs. Slater’s Nonfat MilkSkim MilkSkim MilkSkim MilkSkim Milk
Product of a Product of a cowcow
Product of a Product of a cowcow
GrassGrassGrassGrassSunSunSunSun
COCO22COCO22 HH22OOHH22OO
Minerals Minerals (N, P, K, (N, P, K,
Ca)Ca)
Minerals Minerals (N, P, K, (N, P, K,
Ca)Ca)
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Some of your examples?
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Mrs. Slater’s Nonfat MilkSkim MilkSkim MilkSkim MilkSkim Milk
Product of a Product of a cowcow
Product of a Product of a cowcow
GrassGrassGrassGrassSunSunSunSun
COCO22COCO22 HH22OOHH22OO
Minerals Minerals (N, P, K, (N, P, K,
Ca)Ca)
Minerals Minerals (N, P, K, (N, P, K,
Ca)Ca)
But where do the materialscome from?
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Sources of Materials?•CO2?
•Respiration, combustion, decomposition?
•H2O?
•Precipitation, ground water?
•Minerals?
•Soil, bacteria or fungi breaking things down?
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What about the energy?Skim MilkSkim MilkSkim MilkSkim Milk
Product of a Product of a cowcow
Product of a Product of a cowcow
GrassGrassGrassGrassSunSunSunSun
MetabolisMetabolismm
MetabolisMetabolismm
HeatHeatHeatHeat
HeatHeatHeatHeat
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Conclude...•How does energy move through an
ecosystem?
•Energy flows from sun to chemical bond to cell work to heat
•How does material move through an ecosystem?
•It is cycled, converted to many forms
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Simple Summary
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How does this fit?
•What do you remember about the interactions between respiration & photosynthesis?
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Remember this?
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Ecosystem Matter Cycles
There are 3 cycles of matter that you need to be familiar with…
The Carbon Cycle
The Nitrogen Cycle
The Water Cycle
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Overview…Energy flows
Matter cycles
Decomposers are important in the nitrogen and carbon cycles
http://www.youtube.com/watch?v=0_c0ZzZfC8c&feature=results_main&playnext=1&list=PLE8BD15674EF17038
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Remember…
Ecosystem: Interaction between abiotic and biotic factors in an environment create an ecosystem
Ex: Forest, Desert, Mountains, Ocean
Now we have some important abiotic factors (matter) included in the picture & see how they’re related to the biotic factors