Minggu, 26 Juni 2011

A mangrove is a tropical marine tree. Mangroves have special aerial roots and sa
lt-filtering tap roots which enable them to thrive in brackish water. Brackish w
ater is salty but not as salty as sea water. Mangrove trees are commonly planted
and found in coastal areas. Mangroves can serve as walls of protection for natu
ral disaster in coastal area like tsunami. According to BBC News, healthy mangro
ve forests had helped save lives in the Asia disaster tsunami and people tended
to respect these natural barriers even more, especially after the tsunami.
There are several species of mangrove tree found all over the world. Some prefer
more salinity, while others like to be very-close to a large fresh water source
such as river. Some prefer areas that are sheltered from waves. Some species ha
ve their roots covered with sea water every day during high tide. Other species
grow on dry land but are still part of the ecosystem. The Times of India reporte
d that rare species of mangrove had been found and was also known as the looking
-glass tree, probably because the leaves are silver-coated.
Mangroves need to keep their trunk and leave above the surface of the water. Yet
they also need to be firmly attached to the ground so they are not moved by wav
Any part of root that appears above the water flows oxygen to the plant under wa
ter surface. as the soil begin to build up, these roots procedure additional roo
ts that become embedded in the soil.

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