The Amazon River is estimated to discharge about one-fifth of the river load of the world. The planet has the largest rainforest that is maintained in its basin and serves as an imperative global carbon sink and climate controller. This large flow of the river has a direct impact on weather around continents and the world in the form of the release of moisture.
Water security of Egypt and Sudan is directly linked to the Nile River. Its floods provided loose soil with fertile silt that permitted agriculture. The river supports several important wetlands such as Sudd which are important habitats to migrating birds and endemic dominant birds in a dry area.
The Ganges river has one of the highest populations of people on earth. It begins in the Himalayas and carries important nutrients to fertile plains and Sundarbans delta. The largest mangrove forest is in this delta to guard the coastlines and give residence to species of the Bengal tiger.
Asia's eastern longest river, the Yangtze is under a lot of ecological pressure due to dam building and pollution. Its basin harbors endemics such as the Yangtze finless porpoise. The river links important habitats in Tibetan glaciers and eastern floodplains, and yet the ecological integrity of the river is at risk.
The Mississippi-Missouri River system is a huge aquatic system. Its huge floodplains and swamps naturally cleanse pollution and reduce floods as well as act as important fish and waterfowl breeding ground. This is the basic system of migration of birds in the continent and supports productive fishery in the Gulf of Mexico.
Conclusion :
Such large rivers are the lifeline ecologies without which no one can survive. They preserve biodiversity all over the world and control climate, feed the farms, and give people the necessary resources. Preservation against pollution, over harvesting and fragmentation of their habitat is a worldwide call of duty to conserve both ecological stability and human existence. Degradation imposes urgent measures.
