Transcript Energy Flow in the Ecosystem

Energy Flow in the Ecosystem
Ms. Cohen
Biology 611
What is Ecology?
INTERACTIONS
Among and
between
organisms
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BIOSPHERE is
portion of planet
in which all of life
exists, 8 km
above and 11 km
below surface.
Levels of Organization
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How does energy flow through an ecosystem?
Producers
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• Main source of energy
comes from
_____________.
• Some organisms can
use energy stored in
________________
• Autotrophs -
• Plants, algae &
_________
Types of Producers
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Consumers
• Animals, fungi, and
____________
• Heterotrophs QuickTime™ and a
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– Different types:
herbivores,
carnivores,
omnivores,
detritivores
• DECOMPOSERS -
How does energy flow?
ONE
in
Energy
direction
Flows
Food Chains
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Food Web
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Food Chain/Food Web Venn
Diagram
Ecological Pyramids
• Diagram that shows relative amounts of
energy or matter contained within each
trophic level in food web or chain.
– Three types:
• Energy pyramid
• Biomass pyramid
• Pyramid of numbers
Identify the
Pyramids
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__________________
__________________
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_______________
_
Symbiotic Relationship
http://www.youtube.com/watch?v=uxVMeLWzB_o
http://www.youtube.com/watch?v=48eKFw7DDbY
http://www.youtube.com/watch?v=vMG-LWyNcAs
Relationships in an
Ecosystem
• Symbiosis
• Mutualism
• Commensalism
• Parasitism
• Predator/Prey
Dynamic Equilibrium
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• Change is constant
• Eventually reaches
______________
• Ecosystems can handle
the change when in a
state of
_______________
• Symptoms of this?
(when have we seen
this?)