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The várzea forest in the ecoregion starts where the Xingu River joins the Amazon, which begins to broaden out. It covers the west of Marajó Island and many smaller islands in the Amazon channel, as well as parts of the mainland to the north and south of the river mouth including a small area of French Guiana. [3]
Satellite image of the mouth of the Amazon River, from the north looking south. Belém is the major city and port at the mouth of the river at the Atlantic Ocean. The definition of where exactly the mouth of the Amazon is located, and how wide it is, is a matter of dispute, because of the area's peculiar geography.
The Amazonia marine ecoregion covers the coastal marine environment off the mouth of the Amazon River on the continental shelf of Brazil.The warm North Brazil Current moves east-to-west across the river's outlet, carrying turbid, fresh water to the northwest towards the Caribbean Sea.
The Amazon rainforest, [a] also called Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7,000,000 km 2 (2,700,000 sq mi), [ 2 ] of which 6,000,000 km 2 (2,300,000 sq mi) are covered by the rainforest . [ 3 ]
The Amazon River is home to about 20 percent of the world's fresh water supply, placing the Amazon Reef at the mouth of the largest river in the world, where every day one fifth of the world's water flows into the ocean from the Amazon River. [5] Because of this, the Amazon Reef is less biologically diverse compared to other reefs of its kind. [4]
Map of the Amazon Basin with the Madeira River highlighted. The Madeira River (Portuguese: Rio Madeira [maˈdejɾɐ]) is a major waterway in South America.It is estimated to be 1,450 km (900 mi) in length, while the Madeira-Mamoré is estimated near 3,250 km (2,020 mi) [4] or 3,380 km (2,100 mi) in length depending on the measuring party and their methods.
The main island of the archipelago also has the name of Marajó, having about 42,000 km² of area, considered, due to its size, as the largest coastal island in Brazil, extending from the mouth of the Amazon River, between the Line of the Equator and the parallel 1.55º south latitude and, in the E/W direction between the meridians 47º and ...
The Amazon River is the largest river in the world in terms of its flow rate. In addition, it is the second longest river, measuring 6,575 km (4,086 mi) [3] from its source to the mouth of the Atlantic Ocean [4] after the Nile River which is considered to be the longest river in the world (see Source of the Nile River), although there is some dispute.