What is Ecology?

1
Energy
2
Do I need energy?
Where does energy come from?
What is energy?
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Tidal Marsh Food Web
2o Consumers
1o Consumers
Producers
Decomposers
Created by Michael J. Pidwirny, Ph.D.,
Department of Geography, Okanagan University
College
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Energy Flow in a Food Web
Sun Energy 100
Producers
1o Consumers
2o Consumers
90

• heat
• life needs
• motion

Decomposers
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Energy Flow Food Webs
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Eco by the Numbers
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The Energy Pyramid
Producers 100
1o Consumers 10
2o Consumers 1
3o Consumers 0.1
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