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Coral reefs and mangroves

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Presentation on theme: "Coral reefs and mangroves"— Presentation transcript:

1 Coral reefs and mangroves
Examine the development and the environmental and economic value of coral reefs and mangrove swamps. Watch the introductory video on coral reefs and mangrove swamps

2 summarise... Watch the videos about coral reefs and mangrove swamps – they explain where they are, what they are and why they are valuable Question – why is the management of these coastal ecosystems becoming more prominent?

3 Coral reefs and mangroves
Examine the causes and consequences of the loss of coral reefs and mangrove swamps.

4 Map to show global coastal population and shoreline degradation
 What is the connection between these two things?

5 Use p. 270-271 of Planet Geography to help you answer this.
Compare the causes and consequences of the loss of coral reefs and mangrove swamps. Use p of Planet Geography to help you answer this. Causes of the loss Consequences of the loss Coral reefs Mangrove swamps

6 What are the main threats to...
? ? 15m of the 32m ha of mangrove forests remain due to human clearance of the areas (Philippines has lost almost 80% of its mangroves since the 1920s) Commercial harvesting – wood, medicines, tea Shrimp aquaculture (25%) Expansion of agriculture Urbanisation 58% threatened by human activity Changes in ocean temperatures Changes in chemical composition of water (especially increase in acidity) Changes in weather conditions Destructive fishing practices e.g. Dynamite and cyanide fishing Anchoring of boats

7 What is Sala’s point?

8 Written task/Homework
Read coral reef articles, videos and 2 text books. Produce a revision card for each.. What are reefs and mangroves Environmental values Economic value Locations Why they are being damaged Conservation strategies


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