Quiz10key - While sunlight availability may be constant the...

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MNS320 Marine Ecology 2010 Name: ___________________________________ Quiz 10, 16 points total 1. In three cartoon slides – draw the formation of an atoll-like reef (3pts). 2. Name three abiotic factors that constrain coral reefs (3pts) Temperature, depth, light, salinity, turbidity 3. Now explain one of the above in detail – no more than two sentences. (2pts). EXAMPLE: Coral reefs have a narrow temperature tolerance range, limiting their distribution in the tropics. Areas that have winter temperatures below 18C are not suitable and coral reefs will not survive. 4. What is a hermatypic coral? (2pts) Reef-building coral, forms symbiosis with zooxanthellae 5. In highly productive systems such as reefs, how would you expect productivity to be affected by seasonal changes (e.g., winter –spring –summer –fall) (2pts).
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Unformatted text preview: While sunlight availability may be constant, the amount of biomass produced will be affected by seasonal periods of growth and reproduction from the inhabitants of a reef. 6. Name two processes that would affect larval export in a tropical reef (2pts) Currents / timing of larval release. 7. What would be the first steps in the formation of a tropical reef? (2pts) Good-dispersing species – e.g. coralline algae and some coral species, would arrive first, landing on hard substrate such as rocks, these would grow beyond the hard substrate area and form reefs. EXTRA CREDIT – What is a gorgonian? (1pt) A cnidarian – coral relative. – sea fans and sea whips with flexible skeleton....
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This note was uploaded on 09/26/2010 for the course MNS 320 taught by Professor Staff during the Spring '08 term at University of Texas.

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