Transcript Matter Cycling ecology_-_part_2_-_matter_cycling

Ecology Notes – Part
2:
Cycling of Matter in
Ecosystems
Biology
Spring 2012
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.
Mrs. Slater’s Nonfat Milk
Skim Milk
Product of a cow
Sun
Minerals
(N, P, K,
Ca)
Grass
CO2
H2 O
Some of your examples?
Mrs. Slater’s Nonfat Milk
But
where
do
Skim Milk
the materials
come from?
Product of a cow
Sun
Minerals
(N, P, K,
Ca)
Grass
CO2
H2 O
Sources of Materials?
• CO ?
• Respiration, combustion, decomposition?
• H O?
• Precipitation, ground water?
• Minerals?
• Soil, bacteria or fungi breaking things
2
2
down?
What about the energy?
Skim Milk
Heat
Product of a cow
Sun
Grass
Metabolism
Heat
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
Simple Summary
How does this fit?
• What do you remember about the
interactions between respiration &
photosynthesis?
Remember this?
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
Overview…
Energy flows
Matter cycles
Decomposers are important in the
nitrogen and carbon cycles
http://www.youtube.com/watch?v=0_c0
ZzZfC8c&feature=results_main&playne
xt=1&list=PLE8BD15674EF17038
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