Write a 350-700 word speaker notes for Atolls Coral Reef Ecosystem.

Choose an ecosystem to present to the class. Obtain faculty approval for your ecosystem.
Address the following points:
Geography of an ecosystem
Describe its location in terms of geography and to which terrestrial biome or aquatic ecosystem it belongs.
Biotic and abiotic components of the ecosystem
Describe the major biotic components of the ecosystem.
Describe the major abiotic components of the ecosystem.
Differentiation of species in the ecosystem
List plants and animals from each trophic level.
What are the characteristics within and between species that influence species richness in the ecosystem?
Explain how species and their evolution are affected by the ecosystem you described above.
Describe the keystone species.
Analyze the role of evolution in the keystone species.
Identify factors in this ecosystem that affect diversity.
How do these factors work together to produce the diversity and evolutionary differentiation?

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An atoll is a ring-shaped coral reef – a coral rim that encircles a lagoon partially or completely. Coral islands or cays may exist on the rim. The coral of the atoll usually sits atop the rim of an extinct seamount or volcano which has eroded or subsided partially beneath the water. The lagoon forms over the volcanic crater or caldera, while the higher rim remains either above water or at shallow depths, allowing the coral to grow and form the reefs. A structure similar to an atoll, but not formed by coral is called a pseudoatoll.

Most of atolls are in the Pacific Ocean – in Caroline Islands, Coral Sea Islands, Marshall Islands, Tuamotu Islands and island groups of Kiribati, Tokelau and Tuvalu – and Indian Ocean – the Atolls od the Maldives, Chagos Archipelago, Lakshadweep Islands, the Outer Islands and the Seychelles. There are only eight significantly large atolls in the Atlantic Ocean, east of Nicaragua, that belong to Colombian department of San Andres and Providencia in the Caribbean. Reef-building corals will thrive only in warm tropical and subtropical waters of oceans and seas – that’s why the atolls are...
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