Essay about Mangroves

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     Some people don’t like mangroves, regarding them as muddy, mosquito and crocodile infested swamps. In the past their removal was seen as a sign of progress. So what is the point of preserving them? For a start, an estimated 75 percent of fish caught commercially spend some time in the mangroves or are dependent on food chains which can be traced back to these coastal forests.      Mangroves also protect the coast by absorbing the energy of storm driven waves and wind. The only two yachts undamaged by Cyclone Tracey in Darwin in 1974 had sheltered in a mangrove creek. While providing a buffer for the land on one side, mangroves also interact with the sea on the other. Sediments trapped…show more content…
The soil will be firmer but more saline due to the evaporation of water leaving behind salt which will not be diluted until the next spring tide. The more specialised yellow mangrove Ceriops species can be found in this zone, although conditions usually make it impossible for anything other than saltmarshes or saline herblands with succulent plants to thrive here. The resilient grey mangrove can appear again while less saline soils might be covered with a thick forest of the orange mangrove Bruguiera species. The greatest concentration of mangrove species is usually at the mouth of tidal creeks and rivers where salt and fresh water mix in ideal proportions and floodwaters deposit plenty of material to build up the banks. Red mangroves Rhizophora stylosa are frequently found here. While there are certain patterns to mangrove zone development, local conditions will always dictate which mangroves are found where. Mangroves don't need salt. Some species have been kept in pots where they have grown and flowered regularly when given only fresh water. However, experiments have also shown that the best growth occurs where the plants live in sea water diluted half and half with fresh water. One particular advantage to growing in a salty environment is the lack of competition! Only a limited number of plants have invested evolutionary energy into adapting to intertidal conditions. In

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