The Madeira River 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) or 3,380 km (2,100 mi) in length depending on the measuring party and their methods. The Madeira is the biggest tributary of the Amazon, accounting for about 15% of the water in the basin. A map from Emanuel Bowen in 1747, held by the David Rumsey Map Collection, refers to the Madeira by the pre-colonial, indigenous name Cuyari.
The River of Cuyari, called by the Portuguese Madeira or the Wood River, is formed by two great rivers, which join near its mouth. It was by this River, that the Nation of Topinambes passed into the River Amazon.
The Rio Negro, or Guainía as it is known in its upper part, is the largest left tributary of the Amazon River, the largest blackwater river in the world, and one of the world's ten largest rivers by average discharge.
Madre de Dios is a department and region in southeastern Peru, bordering Brazil, Bolivia and the Peruvian departments of Puno, Cusco and Ucayali, in the Amazon Basin. Its capital is the city of Puerto Maldonado. It is also the third largest department in Peru, after Ucayali and Loreto. However, it is also the least densely populated department in Peru, as well as its least populous department. It has one of the lowest poverty rates in Peru.
The Madre de Dios River is a river shared by Bolivia and Peru which is homonymous to the Peruvian region it runs through. On Bolivian territory, it receives the Beni River, close to the town of Riberalta, which later joins with the Mamore River to become the Madeira River after the confluence. The Madeira is a tributary to the Amazon River.
The East Deccan dry evergreen forests is an ecoregion of southeastern India. The ecoregion includes the coastal region behind the Coromandel Coast on the Bay of Bengal, between the Eastern Ghats and the sea. It covers eastern Tamil Nadu, part of Puducherry and south eastern Andhra Pradesh.
The Puerto Rican dry forests are a tropical dry forest ecoregion located in southwestern and eastern Puerto Rico and on the offshore islands. They cover an area of 1,300 km2 (500 sq mi). These forests grow in areas receiving less than 1,000 mm (39 in) of rain annually. Many of the trees are deciduous, losing their leaves during the dry season which normally lasts from December to April.
Puerto Maldonado is a city in southeastern Peru in the Amazon rainforest 55 kilometres (34 mi) west of the Bolivian border, located at the confluence of the Tambopata and Madre de Dios rivers. The latter river joins the Madeira River as a tributary of the Amazon. This city is the capital of the Department of Madre de Dios.
In biology, the canopy is the aboveground portion of a plant cropping or crop, formed by the collection of individual plant crowns. In forest ecology, canopy refers to the upper layer or habitat zone, formed by mature tree crowns and including other biological organisms. The communities that inhabit the canopy layer are thought to be involved in maintaining forest diversity, resilience, and functioning. Shade trees normally have a dense canopy that blocks light from lower growing plants.
The Peruvian spider monkey, also known as the black-faced black spider monkey, is a species of spider monkey that lives in Peru, as well as in Brazil and in Bolivia. At 60 centimetres long, they are relatively large among species of monkey, and their strong, prehensile tails can be up to 1 m (3 ft) long. Unlike many species of monkey, they have only a vestigial thumb, an adaptation which enables them to travel using brachiation. Peruvian spider monkeys live in groups of 20–30 individuals, but these groups are rarely all together simultaneously. The size and dynamics of the resulting subgroups vary with food availability and sociobehavioral activity. They prefer to eat fleshy fruit, but will change their diet in response to scarcity of ripe fruit. Individuals of this species also eat small animals, insects and leaves based on availability. Females separate from the band to give birth, typically in the fall. These females inhabit a group of core areas where resources are abundant in certain seasons. Typically, males exhibit ranging over longer distances than females, with movement of individuals enhancing the fluidity of subgroup size. Peruvian spider monkey are independent at about 10 months, with a lifespan of about 20 years.
The Pinturas River Canyon is a canyon located 160 km from the town of Perito Moreno in Santa Cruz, Argentina. It is home to the Pinturas River, which carved the canyon through eroding the Chon Aike Formation. Native populations inhabited the region, painting many works of rock art, some of which can still be seen today. The most famous of these rock art sites is the Cueva de las Manos, a cave site with ancient art whose creation dates back up to 13,000 years ago. This rock art, and Cueva de las Manos in particular, brings lots of tourism to the canyon.
Tambopata Province is the largest of three provinces in the Madre de Dios Region of Peru.
Cocha Cashu Biological Station is a tropical biological research station located at 11° 54'S and 71° 22'W in Manú National Park, Peru. It was established in 1969-70, predating the founding of its containing national park. Though only 10 km2 in area, the site has provided valuable research. The station is situated on the shore of an oxbow lake, from which it takes its name. "Qucha" is the Quechua word for lake. "Cashu" is derived from the English word "cashew" and refers to the shape of the lake.
The Mexican golden trout is a species of fish in the family Salmonidae. The species is endemic to high-elevation headwaters of the Fuerte River, Sinaloa River, and Culiacán River drainages in the Sierra Madre Occidental in Mexico.
The bearded emperor tamarin is one of the two subspecies of the emperor tamarin. It is mostly found in the tropical forests of southwestern Brazil and eastern Peru. This omnivorous member of the Callitrichidae family is usually found in groups of 4 and shares social relations with other callitrichids. They communicate vocally, as well as with olfactory signals. Males tend to be primary caregivers for their young. It is considered as a species of Least Concern by the IUCN, despite threats from increased habitat loss.
The Piedra is a river in the Iberian System area, Spain. It is a tributary of the river Jalón. The waters have a high concentration of calcium carbonate which is deposited on plant life near the source, giving the river its name Río Piedra, which means 'stone river' in English.
The Las Piedras River is a major tributary of the Madre de Dios River in the southeast Peruvian Amazon.
A whitewater river is classified based on its chemistry, sediments and water colour. Whitewater rivers have high levels of suspended sediments, giving the water a pH that is near-neutral, a high electric conductivity and a pale muddy, café au lait-like colour. Whitewater rivers are of great ecological importance and are important to local fisheries. The major seasonal Amazonian floodplains known as várzea receive their water from them.
Dipteryx micrantha is a tropical flowering plant, a giant tree in the Faboideae subfamily of the bean family Fabaceae. It is a dominant emergent tree in parts of the rainforests of Bolivia, Brazil, Colombia, Ecuador and Peru. In the international timber market, this species is traded under the name cumaru. It furnishes a dense, hard, beautiful reddish timber which has become a popular import in the 2010s for use in parquet. The ornamental bunches of lilac pink flowers high in the canopy eventually develop into a mass of large fruit pods, which are an important food for many native animals during the dry season. The fruit contains a single oily seed which is edible, although these seeds are not exploited as a commercial product.
Peru 
