Monte Alegre várzea
| Monte Alegre várzea | |
|---|---|
Left bank of the Solimões at Careiro da Várzea
|
|
| Ecology | |
| Realm | Neotropical |
| Biome | Tropical and subtropical moist broadleaf forests – Amazon |
| Geography | |
| Area | 66,822 km2 |
| Country | Brazil |
| Coordinates | 2°01′37″S 55°38′42″W / 2.027°S 55.645°WCoordinates: 2°01′37″S 55°38′42″W / 2.027°S 55.645°W |
The Monte Alegre várzea (NT0141) is an ecoregion of seasonally flooded várzea forest along the Amazon River in the Amazon biome.
The várzea forests of this ecoregion extend along the low, seasonally flooded rivers of the central and lower basin of the Amazon River, including a large part of the Madeira River basin, the mouth of the Purus River, tributaries of these rives and an isolated patch of várzea along the Mamoré River between Bolivia and Brazil. Major population centers in or near the ecorgion are Manaus, Itacoatiara, Coari and Óbidos.
The ecoregion adjoins the Madeira-Tapajós moist forests to the southeast and the Uatuma-Trombetas moist forests and Japurá-Solimões-Negro moist forests to the north. The Purus-Madeira moist forests lie to the west of the Madeira and the south of the Amazon. The Purus várzea is upstream along the Solimões and Purus rivers and their tributaries. The Gurupa várzea is downstream along the Amazon.
Elevations range from 15 metres (49 ft) in the east, where the Tapajós meets the Amazon river, to 80 metres (260 ft) on the Madeira. The soils are fertile sediments formed in the present Holocene epoch, carried down from the Andes. The annual floods renew the sediments, making very rich soils compared to the higher terra firme on either side of the várzea. The river waters, loaded with sediment, rise by 6 to 12 metres (20 to 39 ft) each year, flooding the land for as long as eight months.
...
Wikipedia