Rio Cautário Federal Extractive Reserve
| Rio Cautário Federal Extractive Reserve | |
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| Reserva Extrativista do Rio Cautário | |
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IUCN category VI (protected area with sustainable use of natural resources)
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Cautário River
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| Nearest city | Guajará-Mirim, Rondônia. |
| Coordinates | 11°50′27″S 64°12′20″W / 11.840825°S 64.205461°WCoordinates: 11°50′27″S 64°12′20″W / 11.840825°S 64.205461°W |
| Area | 73,818 hectares (182,410 acres) |
| Designation | Extractive reserve |
| Created | 7 August 2001 |
| Administrator | Chico Mendes Institute for Biodiversity Conservation |
The Rio Cautário Federal Extractive Reserve (Portuguese: Reserva Extrativista do Rio Cautário) is an extractive reserve in the state of Rondônia, Brazil.
The Rio Cautário Federal Extractive Reserve is in the municipality of Guajará-Mirim, Rondônia. It has an area of 73,818 hectares (182,410 acres). The reserve adjoins the Serra da Cutia National Park along its northwest border. The Cautário River defines the southeast border of the reserve, running in a southwest direction to join the Guaporé River on the border with Bolivia. The Rio Cautário State Extractive Reserve adjoins the reserve on the other side of the Cautári River. The reserve is in a region of crucial importance for conserving biodiversity and natural resources of the Amazon biome, and for supporting the traditional populations and indigenous communities. It is in a strategic location in Rondônia, since the region has large areas used for livestock and for expansion of the agricultural frontier.
The Cautário River rises in the Uru-Eu-Wau-Wau Indigenous Territory and receives tributaries from the Serra Uopianes and the Serra Pacaás Novos. It has clear waters fed by a region without major deforestation and silting of the river's margins. It has rapids, but always with a drop of less than 2 metres (6 ft 7 in). The most rugged stretch is between Redenção e Bom Destino. It is navigable, even in the middle section around Bom Destino, but only in the rainy season. It flows into the Guaporé/Mamoré river.
Average annual rainfall is 1,500 millimetres (59 in). Temperatures range from 18 to 30 °C (64 to 86 °F), with an average of 25 °C (77 °F). Altitudes range from 100 to 200 metres (330 to 660 ft).
Dense lowland rainforest covers 53.9% of the reserve. In the alluvial plain of the Cautário River there are significant patches of dense alluvial rainforest (10.65%), and open alluvial rain forest or flooded forest (7.81%). The northeast of the reserve has mountainous portions that contain rainforest / savanna contact (12.57%), wooded savannah (3.07%), parkland savanna (1.09%) and rocky outcrops (4.83%). Trees include Brazil nut trees and trees with value for their timber including Apuleia leiocarpa, Amburana acreana, Mezilaurus itauba, Cedrela odorata, Dinizia excelsa, Hymenolobium petraeum, Dipteryx odorata, Swietenia macrophylla, Erisma bicolor and Erisma uncinatum.
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