Geography

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Created by: noonoo2001
Created on: 08-12-16 21:11

Coral reefs location

Near the equator mostly between tropic of capicorn and cancer but some slightly ahead

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What are coral reefs?

Colonies of living coral organisms. Hosts zooxanthellae which some of the polyps food. and provides

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euthorpication

Affects marine ecosystems. Nurteint cyling is critcal to all ecosystem. When the flow of nutrients into the enviroment exceeds the ability of natural systems to abosrob them, ecosystens feel the impact. Cause of this fertilisers.

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What can to much nutrient cause?

Excessive growth of algae/blocks sunlight+remove decay from water/reduces diversity of species which cannot cope with reduced oxygen/ damages coral reefs + other marine ecyosystems/extremecases it creates oxygen delepeted hyxopic or dead zones.

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Silation

Happens when silt settles out of sea waterontio marine ecoysystems. Blocks out sunlight - marine plants can't photosythenise, It also smother the seabed and thus destroy sea habitat.

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Effect of ocean temp rising

Zooxanthellae algae in coral plyps are expelled. Corla dies. Called bleaching as dead coral turns white.

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Effect if sea level rise

Deeper water. Less photoysthesis as can't.Die out.

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Acidification

More acidic oceans could be a promblem for marine animals which caclcium carbonate shells and skeltons such as coral and shellfish. Calcium carbonate dissolves in acid water - shells/skeltons will become weaker and harder to grow

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