VCE BIOLOGY

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Dr Lakshmi Sharma

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Ecosystems & Energy

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 ???