Please enable JavaScript.
Coggle requires JavaScript to display documents.
Coral reefs - Coggle Diagram
Coral reefs
Reefs are established when a large, continuous mass of coral builds upwards and outwards from a rock base.Coral has a solid skeleton of limestone, and needs this three factors
-
clean, shallow saltwater, not too much deeper
-
Mangrove swamps
They are areas of vegetation found along sheltere tropical coastlines and estuaries where there is a large area between high and low water mark.
-
-
The temperature should remain above 20 degrees and the seasonal temperature ranfge should not exceed 5 degrees. The areas where they grow should be calm, with no strong waves or tidal currents.
Mangroves trees are able to withstand being covered twice a day by saltwater.They have specially adopted aerial and salt excreting leaves that enable them to occupy the wetlands where other plants cannot survive. They prop the tree up with thei prop roots and take in oxygen at low tide with their aerial roots.
-
-
DEFINITION: A coral reef is a community of living organisms, one of the most diverse types of ecosystem in the world.
It is made up of plants, fish and many other creatures. They are usually found 30 degrees north and south of the Equator.
-
-