From Wikipedia, the free encyclopedia
Jump to: navigation, search
For the mixed martial artists and brothers with the same nickname, see Ildemar Alcântara and Iuri Alcântara.
Mouths of amazon geocover 1990.png
A satellite view of Marajo
Marajó is located in Brazil
Marajó (Brazil)
Location Amazon River
Coordinates 0°59′S 49°35′W / 0.983°S 49.583°W / -0.983; -49.583
Area 40,100 km2 (15,500 sq mi)
Area rank 35th
Length 297 km (184.5 mi)
Width 204 km (126.8 mi)
Highest elevation 40 m (130 ft)
Highest point Breves (city)
State Pará
Macroregion Marajó
Largest city Breves (pop. 99,223)
Population 250,000

Marajó (Portuguese pronunciation: [ˈiʎɐ dʒi mɐɾɐˈʒɔ]) is an island located at the mouth of the Amazon River in Brazil. It is part of the state of Pará.


A detailed map with Marajó

With a land area of 40,100 km² (15,500 sq mi), comparable in size to Switzerland, it is a large coastal island almost completely surrounded by fresh water. Its northeast coastline faces the Atlantic Ocean; the outflow from the Amazon between January and July is so great that the sea at the mouth is fresh water for some distance from shore. The city of Belém lies to the south across the southern fork (also called the Pará River) of the river's mouth. The island sits almost directly on the equator.

Together with smaller neighboring islands, separated from Marajó by rivers, it forms the Marajó Archipelago, with an aggregate area of 49,602 km² (19,151 sq mi).[1]

Large parts of the islands are flooded during the rain season because of higher water levels of the Amazon River along the coast and heavy rainfall in the interior.

The east side of the island is dominated by savanna vegetation. There are large fazendas with animal husbandry. This is also the location of Lake Arari, which has an area of 400 km² but shrinks by 80% during the dry season.[2] There are large herds of domesticated water buffalo on the island. The west side of the island is characterized by Várzea forests and small farms. Lumber and açaí are produced there.

To the north of the large savanna area are palm swamps, mainly with Buriti Palm (Mauritia flexuosa) and Euterpe oleracea. During the rainy season, the swamps are flooded one meter high. Little is known about the ecology of these swamps.

There are 20 large rivers on the island.

Because of oscillating water levels and regular floods, many settlements are built on stilts (Palafitas).

The most important towns are in the southeast of the island: Soure, Salvaterra, and the largest city, Breves. They feature a basic touristic infrastructure and are popular because of the generous lonely beaches.

The island is shared by 16 municipalities of three microregions:


The island was the site of an advanced pre-Columbian society, the Marajoara culture. The island is also the location of the Roman Catholic Territorial Prelature of Marajó. In the 1918–1919 outbreak of the Spanish influenza, Marajó was the only major populated area in the world not to have documented any cases of the illness.[3]


  1. ^ Development Plan for Marajó, Document of the Government of Brazil[dead link]
  2. ^ Prof. "Pará Histórico: Índios no Pará". Retrieved 2014-06-23. 
  3. ^ Ryan, Jeffrey, ed. Pandemic influenza: emergency planning and community preparedness. Boca Raton : CRC Press, 2009. p. 24

External links[edit]

Coordinates: 0°59′S 49°35′W / 0.983°S 49.583°W / -0.983; -49.583