sign in sign up
<<
Home , Energy flow (ecology)

in

Where does all the energy go?

REMEMBER TO TAKE CORNELL NOTES! 

1 Where do ecosystems fit in?

Biosphere Ecosystems

Communities Populations Individuals

2 What are the energy laws?

2 Laws of : 1) Energy cannot be created nor destroyed. 2) Energy can be transformed into different types of energy.

Energy flows through ecosystems. It cannot be recycled.

3 How does through ecosystems? o Begins with the sun… o Producer  Consumers o 1’ consumers () o 2’ consumers () o 3’ consumers () o Some energy is lost as heat

4 What are the different ways organisms acquire energy?

They can be… o Producers o Consumers o

5 What are Producers?

Organisms that produce their own food from the sun’s energy = “self –feeders” Ex. Plants, some photosynthetic bacteria & protists

6 What are Consumers?

Organisms that consume other organisms for energy = “other–feeders” Ex. All animals (herbivores, /predators, omnivores, scavengers, etc)

7 What are Decomposers?

Organisms that consume dead for energy Saprotrophs = “–feeders” aka Ex. Fungi, some bacteria

8 What is a ? A FOOD CHAIN shows the transfer of energy from the sun to producer to primary then to higher order consumers.

9 What is a ? A TROPHIC LEVEL is a “feeding level”. Producers are (T1) or Trophic Level 1.

T4 eagle T1 T3 plants T2 frog grasshopper

10 Identify the…

•Producer (T1) •Primary Consumer (T2) •Secondary Consumer (T3) •Tertiary Consumer (T4) •Quaternary Consumer (T5)

•Which direction does energy flow?

11 Another way of showing the transfer of energy in an is the ENERGY PYRAMID

12 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.

13 Food Chains Show Available Energy

14 What is a ? o Interconnected food chains o Show the complex feeding relationships in an ecosystem

15 Identify the…

Producers 1’ Consumers 2’ Consumers 3’ Consumers

16 Any Questions?

17