Coral Reef - Coast Studies Flashcards
What’s a barrier reef?
Coral grows in a shallow area away from the mainland creates a deep lagoon in between - Great Barrier Reef - Queensland australia
What’s an atoll reef?
Develop around islands - fringing reefs grow in a circle attached to the land - sea level rise causes coral to grow upwards - forms a ring of coral with lagoon replacing island in centre - blue hole lighthouse reef - Belize
What happened to the coral in Indonesia?
8.7 earthquake
190 mile coast all coral has lifted
Lifted 1metre above sea level
Died
What’s happening to the coral in the Maldives?
Snorkelling and swimming damages it
Boats drop anchors
Sold as souvenirs
What happened to the coral in Tobago? - Buccoo coral reef
Turned white Global warming raised sea temp by 3C Coral bleached Algae die so coral have no food and die Tragedy for island whose main industries are fishing and tourism
What’s a fringing reef?
Coral platforms grow out to sea attached to the mainland creates a shallow lagoon - Monuriki Island - Fiji
Some facts about the Great Barrier Reef?
A world heritage site
Tourist trade employs 6% of the workforce in Australia
Tourism brings $5 billion
What is affecting the coral reef in Australia?
Agriculture- pollutants cause eutrophication
Housing and shoreline development- more demand for materials from sea bed , sediment
Fishing- fisherman banned from a third of the reef
Dredging - muddies water blocks light
Tourism - break coral
Industry and sewerage - toxic and metal pollutants