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Ene rg y Flo w in
 Ec o s ys te ms
Mr. S c humaie r
What energy roles do
organisms play in an
    ecosystem?
Organism's play one of three
          roles:


         Producer
        Consumer
       Decomposer
What is a PRODUCER?
An organism that can make its
 own food such as grass and
           trees.
What is a CONSUMER?
An organism that gets its
energy by feeding on other
        organisms
Describe HERBIVORES,
CARNIVORES, OMNIVORES, &
      SCAVENGERS.
H e r b iv o r e s


Eat only plants such as caterpillars,
          cattle, and deer.
C a r n iv o r e s
Eats only animals such as lions,
     spiders, and snakes.
O m n iv o r e


 Eats both plants and animals such
as Crows, goats, and most humans.
S c a ve ng e r
 A carnivore that eats the bodies of
dead organisms such at catfish and
              vultures.
What do herbivores and
carnivores have in common?
Herbivores and carnivores are
    similar in that both are
consumers; they cannot make
their own food but must obtain
    ...
What are DECOMPOSERS?
An organism that breaks down
wastes and dead organisms and
   returns raw material to the
          environment
          ...
What is the FOOD CHAIN?
A series of events in which one
   organism eat another and
        obtains energy.
What is a FOOD WEB?
Many overlapping food chains
     in an ecosystem.
What can be shown through
the use of food chain and food
       web diagrams?
Food Chain shows one
 possible path that energy
moves through an ecosystem.


 Food web is a more realistic
way to show th...
What is an ENERGY
   PYRAMID?
A diagram that shows the
amount of energy that moves
  from one feeding level to
    another in a food web.
How much energy is available
 at each level of an energy
         pyramid?
Third-level consumers = 1kcal


Second-level consumers = 10 kcal


First-level consumers = 100 kcal


     Producers = 1,0...
The most energy is available at the
producer level. At each level in the
  pyramid, there is less available
 energy than a...
Why are food webs a more
  realistic way of portraying
ecosystems than food chains?
Most producers and
consumers are part of many
  overlapping food chains.
http://www.youtube.com/watch?v=sbWyrcY5i3s
The End
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
2.1 Energy Flow In Ecosystems
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2.1 Energy Flow In Ecosystems

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2.1 Energy Flow In Ecosystems

  1. 1. Ene rg y Flo w in Ec o s ys te ms Mr. S c humaie r
  2. 2. What energy roles do organisms play in an ecosystem?
  3. 3. Organism's play one of three roles: Producer Consumer Decomposer
  4. 4. What is a PRODUCER?
  5. 5. An organism that can make its own food such as grass and trees.
  6. 6. What is a CONSUMER?
  7. 7. An organism that gets its energy by feeding on other organisms
  8. 8. Describe HERBIVORES, CARNIVORES, OMNIVORES, & SCAVENGERS.
  9. 9. H e r b iv o r e s Eat only plants such as caterpillars, cattle, and deer.
  10. 10. C a r n iv o r e s Eats only animals such as lions, spiders, and snakes.
  11. 11. O m n iv o r e Eats both plants and animals such as Crows, goats, and most humans.
  12. 12. S c a ve ng e r A carnivore that eats the bodies of dead organisms such at catfish and vultures.
  13. 13. What do herbivores and carnivores have in common?
  14. 14. Herbivores and carnivores are similar in that both are consumers; they cannot make their own food but must obtain food by eating other organisms.
  15. 15. What are DECOMPOSERS?
  16. 16. An organism that breaks down wastes and dead organisms and returns raw material to the environment Bacteria, fungi, molds, mushrooms
  17. 17. What is the FOOD CHAIN?
  18. 18. A series of events in which one organism eat another and obtains energy.
  19. 19. What is a FOOD WEB?
  20. 20. Many overlapping food chains in an ecosystem.
  21. 21. What can be shown through the use of food chain and food web diagrams?
  22. 22. Food Chain shows one possible path that energy moves through an ecosystem. Food web is a more realistic way to show the flow of energy through an ecosystem
  23. 23. What is an ENERGY PYRAMID?
  24. 24. A diagram that shows the amount of energy that moves from one feeding level to another in a food web.
  25. 25. How much energy is available at each level of an energy pyramid?
  26. 26. Third-level consumers = 1kcal Second-level consumers = 10 kcal First-level consumers = 100 kcal Producers = 1,000 kcal
  27. 27. The most energy is available at the producer level. At each level in the pyramid, there is less available energy than at the previous level.
  28. 28. Why are food webs a more realistic way of portraying ecosystems than food chains?
  29. 29. Most producers and consumers are part of many overlapping food chains.
  30. 30. http://www.youtube.com/watch?v=sbWyrcY5i3s
  31. 31. The End

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