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Impact of Acanthaster planci (Crown of Thorns) Sea Star on Coral Reef Systems René A. Lewis.

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Presentation on theme: "Impact of Acanthaster planci (Crown of Thorns) Sea Star on Coral Reef Systems René A. Lewis."— Presentation transcript:

1 Impact of Acanthaster planci (Crown of Thorns) Sea Star on Coral Reef Systems
René A. Lewis

2 Population and Growth Reproduction Juvenile to adult phase Adult phase

3 Food Resources and Feeding Patterns
Scleractinian corals Body morphology of crown-of-thorns Feeding times/patterns

4 Healthy vs. Unhealthy Reef

5 Causes of Outbreaks Human modification of environment
Removal of natural predators Nutrient run-off Normal phenomenon

6 Possible Solutions Injection of chemicals such as formalin, ammonia or copper sulphate Introduction of predator species such as Triton (Charonia tritonis ) Removal by hand

7 Reef Recovery and Coastal Impacts

8 The End

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