1
Energy in
Ecosystems
Where does all the
energy go?
REMEMBER TO TAKE CORNELL NOTES!
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1) Energy cannot be created nor destroyed. 2) Energy can be transformed into different types of energy. ➢Energy flows through ecosystems.
Typology: Exercises
2021/2022
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Energy in
Ecosystems
Where does all the energy go?
REMEMBER TO TAKE CORNELL NOTES!
Where do ecosystems fit in?
Biosphere
Ecosystems Communities Populations Individuals
How does energy flow
through ecosystems?
o Begins with the sun … o Producer Consumers o 1’ consumers (herbivores) o 2’ consumers (carnivores) o 3’ consumers (omnivores) o Some energy is lost as heat
What are the different ways
organisms acquire energy?
They can be…
o Producers
o Consumers
o Decomposers
What are Consumers?
Organisms that consume other organisms for energy
Heterotrophs = “other–feeders”
Ex. All animals (herbivores, carnivore/predators, omnivores, scavengers, etc)
What are Decomposers?
Organisms that consume dead organic matter for energy
Saprotrophs = “detritus–feeders” aka detritivores
Ex. Fungi, some bacteria
A TROPHIC LEVEL is a “feeding level”. Producers are (T1) or Trophic Level 1.
What is a Trophic Level?
T plants T grasshopper
T frog
T eagle
Identify the…
- Producer (T1)
- Primary Consumer (T2)
- Secondary Consumer (T3)
- Tertiary Consumer (T4)
- Quaternary Consumer (T5)
- Which direction does energy flow?
What is an energy pyramid?
Energy pyramids show the amount of available energy for each trophic level.
Only 10% of the available energy is transferred from one trophic level to the next.
Food Chains Show Available Energy
Identify the…
Producers
1’ Consumers
2’ Consumers
3’ Consumers