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17 Cards in this Set

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Location and Limitations

List six factors governing the formation of coral reefs.
Temperature
Movement/Oxygenation
Water Clarity
Salinity
Shallow Water
Firm Base
Location and Limitations

What is the optimal temperature range for coral reefs?
21 degrees Celcius
29 degrees Celcius
Location and Limitations

Why is water movement an essential factor in coral reef locations?
Oxygenates the area
Brings in food
Removes polutants
Removes waste
Location and Limitations

Why is water clarity an essential factor in coral reef locations?
Turbid conditions block sunlight. Solar rays must penetrate to sustain the zooxanthellae.
Location and Limitations

At what depth do coral reefs generally establish themselves?
Coral reefs generally establish themselves in water no less than 30m.
Location and Limitations

Why do different species grow in different coral zones.
Zonation occurs because species have different resistance to the essential factors governing reef formation.
Reef Classification

How have different reef formations been created?
Land subsidance.
Rising sea levels.
Reef Classification

What are the three basic types of coral reefs?
Fringing Reefs
Barrier Reefs
Atolls
Reef Classification

What is the youngest type of reef?
Fringing
Reef Classification

Which type of reef grows out from the shore?
Fringing
Reef Classification

What type of reef is separated from shore by a deep lagoon?
Barrier reef
Reef Classification

What type of reefs form on the edges of continental shelves?
Barrier reefs
Reef Classification

What type of reefs form in oceanic waters beyond the continental shelf?
Atolls
Reef Classification

What type of foundation do true Atolls have?
Volcanic with a cap of coral limestone
Reef Classification

In what ocean area are most Atols found?
Indo-pacific
Reef Classification

What types of reefs are seperated from shore by a lagoon?
Fringing
Barrier
Reef Classification

What type of reef can be separated from shore by a small lagoon?
Fringing