Coral reefs and mangroves

Examine the development and the environmental and economic value of

coral reefs and mangrove swamps.http://www.bbc.com/future/story/20130110-will-we-lose-all-our-coral-reefs/2

Watch the introductory video on coral reefs and mangrove swamps

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?

Coral reefs and mangroves

Examine the causes and consequences of the loss of coral reefs and mangrove swamps.http

://www.theguardian.com/environment/ng-interactive/2014/mar/great-barrier-reef-obituary

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

Compare the causes and consequences of the loss of coral reefs and mangrove

swamps.

Use p. 270-271 of Planet Geography to help you answer this.

Causes of the loss

Consequences of the loss

Coral reefsMangrove swamps

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

What is Sala’s point?

• http://www.youtube.com/watch?v=6ul2TSvUDog

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