Marine Ecosystems: Coral Reefs (AQA A-Level Geography): Flashcards
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Practise the cards
10 cards from this deck
% of Earth's surface covered by marine ecosystems
% of Earth's surface covered by marine ecosystems
70%
Material coral reefs are made from
Material coral reefs are made from
Calcium carbonate (limestone)
Symbiotic algae living in tropical coral polyps
Symbiotic algae living in tropical coral polyps
Zooxanthellae
Cause of coral bleaching
Cause of coral bleaching
Stress from elevated water temperatures
Latitude range for tropical coral reefs
Latitude range for tropical coral reefs
Between 30°N and 30°S of the Equator
Min. year-round water temp. for tropical reefs
Min. year-round water temp. for tropical reefs
Above 16°C
Defining feature of fringing reefs
Defining feature of fringing reefs
No lagoon; grow directly from shoreline
Defining feature of barrier reefs
Defining feature of barrier reefs
Parallel to coast, separated by lagoon
Shape/structure of atoll reefs
Shape/structure of atoll reefs
Circular/oval surrounding central lagoon
Length of Australia's Great Barrier Reef
Length of Australia's Great Barrier Reef
2,000 km