Firstly in some parts of the world, mangroves are being used as fuelwood or charcoal. Mangroves may be used directly or after the conversion into charcoal. Rhizophora species wood have a high calorific value meaning that they produce more heat for the same weight, and are thus the major species exploited. Charcoal manufacture still occurs in Indonesia, Malaysia and Thailand. For examples, managed forests are found in the Matang District and Johor River Forest Reserve in Peninsular Malaysia.
Mangrove Firewoods |
Mangroves as buffer zone |
Besides acting as buffer zones for coastal settlements, mangroves forest are able to protect the surrounding waters against pollution. The roots of the mangroves trees trap waste materials that have either been transported from rivers upstream or have been washed ashore. It provides a filtering effect by reducing the amount of pollutants flowing into the large water bodies. In addition, the soil in the mangroves forests contains bacteria that can break down the biodegradable wastes and convert them into nutrients for the mangrove forests.
Rubbish being trapped by mangroves |
In addition, mangroves produces food for human consumption. For example the leaves of the Nipah Plams are used as thatch for 'attap' huts, the immature seed is harvested as a jellylike sweetmeat called 'attap-chee' and is a favourite in local desserts. The sap is extracted from the inflorescence and when fermented, is called 'toddy', a local alcholic drink. Commercial honey is also extracted from some mangrove areas as many of the flowers are animal-pollinated and have nectar as a reward.
Fruit of the Nipah Palm |
Lastly mangroves ecosystem acts as a nursery for marine fish, shellfish and shrimps. In some places, 50-75% of commercially-caught fish, prawns and crabs spend some time in the mangroves or depend on food chains that begin in the mangroves.
Giant Mudskipper |
In conclusion, the mangrove forest provides many advantages us. However, mangroves nowadays are being cleared for land or human use. The government should manage the use of mangroves before its too late.
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