VCE BIOLOGY
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Dr Lakshmi Sharma
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Ecosystems & Energy
Discuss the movement of Energy within an Ecosystem ?
The Sun
What is the sun’s relationship to an
ecosystem?
The Sun
Producers
Necessary - Web & Food chains
Ecosystems - Energy Movement
PRIMARY PRODUCTIVITY Producers - light energy into chemical energy
Primary Productivity
Which Ecosystems have high and low producers ?
Primary Productivity
Low – Deserts High - Rainforests
How is Energy lost in a food chain ?
The Ecosystem - Energy Loss
Herbivores >10% of the plants
Energy for movement
Non-Digestible
Energy Loss
Carnivores Digestible food matterLess energy here compare herbivore
Remember !For each Organism type:
Reduction in tissue total mass as one ascends the food chain.
Reduction in total mass of tissue
Hope You Enjoyed The Lesson!
Any Questions ???