'''Rio Negro''' is in Brazil.

Regions

The Negro River is the world_fs largest black water river and the second in water volume ? being the Amazon the first, which it helps to form. 81% of it_fs total length are in Brazil, 11% in Colombia, 8% in Venezuela and a little portion in Guiana (1,7% of it_fs total). The Rio Negro flows into the Rio Solimoes to form the Amazon River, just below Manaus. It runs through 1.700Km (more than 1,000 miles) and the water volume that flows through it_fs channel is more than all the european rivers united. In some areas it can have more than 32 Km (20 miles) wide and it has more than a thousand island grouped in two archipelagos: Anavilhanas, closer to Manaus and Mariua, at Barcelo_fs region. Both are the world_fs biggest fluvial archipelagos. It is an amazonian region in which the social and environmental unity ? populated watershed and traditionally used by a group of people ? shows a great diversity. The greater portion of the region is composed by indigenous land and conservation unties. The black water rivers have this dark coloration due to the presence of large quantities of dissolved organic substances, that are originated from the decomposition of organic matter at the sandy soils. The dense and continuous canopy layer are the most efficient protection against soil erosion. Due to the low pH, insects do not proliferate and there are very few mosquitos in the region. The Rio Negro_fs flora is composed by bushes, terrestrial herbs, epiphytes (plants that lives on tree branches or trunks, without any connection with the ground), hemiepiphytes (also live up on the trees but do touch the ground at some point of it_fs life) and trees, that are our greater interest. The trees are very large and high, with a single trunk going from the ground until the canopy. They can be used as home for other plants (vines and epiphytes). The trees called _gemergents_h are the ones stand out from the others being taller than most (Brazil Nut, Mahogany, Samauma, Angelim).

Cities

Manaus, Novo Airao, Barcelos, Sao Gabriel da Caichoeira

Other destinations

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  • '''Amazon Tree Climbing'''http://www.AmazonTreeClimbing.com Ecotourism, Nature and Adventure Travel or/and Sustainable Tourism. ATC is specialized in Tree Climbing and boat expeditions at the Brazilian Amazon. Working with small closed groups, they take you to explore the jungle and it's highest tree canopies. ATC is pioneer at the recreational tree climbing activity in Brasil. Their headquarters are in Manaus, in the heart of the forest. Working with closed groups, because they believe that small groups causes less impact on the environment and harmonize better with the culture of the places they visit. ATC follows rigid safety protocols according to the Brazilian Adventure Tourism Standards. The trees are previously inspected and the climb sites are carefully chosen ? they opt for primary forest area, which gives a better chance of observing the wildlife in it_fs natural habitat. Their services include multilingual guides with solid cultural background, and top quality equipment. Their mission is to share the magic and beauty of the Amazon forest with their guests, so that they may understand and respect this fragile ecosystem. They offer trips varying from one day to customized boat expeditions at the rio Negro basin.
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