More than half of the basin’s 7,500,000 km2 (2,seven hundred,000 sq mi) is covered by rainforest, which is home to 5,five hundred,000 km2 (2,hundred,000 sq mi). There nine countries and 3,344 recognised indigenous territories in this region.
There are an estimated three hundred and ninethy billion trees in amazon, divided into 16,thousand different species, making it the world’s largestt and most diversified tropical rainforest.
More over thirty million people from three hundred & fifty different ethnic group live in amazon, which is divided into nine national governments and 3,three hundred and forty four federally recognised indigenous territories. 9 percent of the population is made up of indigenous peoples, with 60 of them being largely isolated.
According to legend, Francisco de Orellana engaged in combat with the Tapuyas and other indigenous groups, earning the region the nickname “Amazon.” As was tradition, the women of the tribe engaged in a fight with the men. According to herodotus & diodorus, the greek legend of the amazons. inspired Orellana’s given name, “Amazonas”.
Jivaro tribes in the Amazonas have fought and waged war with each other on several occasions. Several Jivaroan tribes, especiallyhead hunting for trophis & headshrinking were common practises among the Shuar people.. The Yanomami tribes along the Brazilian-Venezuelan border have a history of intertribal strife, according to missionaries’ accounts. More over a third of Yanomamo males perished as a result of conflict on average.
During the amazon rubber boom, sickness introduced immigrants, such as typhus & malaria, were responsible for the deaths an estimated 40,000 local Amazonians.
9 countries share the amazon Basin, the majority of which is located in Brazil (58.4 percent ).
Rainforests first appeared in the eocene period. During the period when the atlantic Ocean broadened enough to bring a tropical climate to the Amazon basin, global temperatures began to fall.After fifty five million years, the present cold epoch has brought an end to the region lack of savanna type biomes. The savanna, on the other hand, spread when the climate dried out.
The extinction of dinosaurss & the subsequent wetterr climates permitted the development of the tropicall rainforestt over the continent. The rainforest reached a southern limit of forty five degrees latitude between sixty sixty and thirty four Mya.Climate change over the last thirty four million years has resulted in the expansion of savanna regions into tropical regions.
The Oligocene rainforest, for example, covered a relatively tiny area. During the miocene, it shrank to a most inlands structure until expanding once more following the last glacial peak.. The rainforest, on the other hand, flourished throughout these glacial periods, allowing a wide assortment of species to survive and evolve.
Many environmentalists are concerned about the potential loss of biodiversity and the acceleration of climate change that would ensue from clearing forests and burning the resulting carbon dioxideAmazonian evergreen forests generate over ten percent of the world terrestriall primary production & ten percent of carbon stored in ecosystem with carbon stores around 1.1 ten eleven metric tonnes.
Between nineteen seventy five and nineteen ninethy six, Amazonian trees are estimated to have accumulated between zero point six two and zero point three two tonnes of carbon per hectare year in carbon dioxide emissions.
In 2021, the Amazon is expected to emit more greenhouse gases than it takes in, according to projections. Although it is generally believed that people produce more than a quarter of the world’s oxygen, this statistic really refers to oxygen turnover. In terms of the ecosystem’s net contribution, it’s somewhere around zero.
Greenhouse gas emissions are predicted to cause the Amazon rainforest to become uninhabitable by 2100, according to a computer models of future climate change.
However, a wide range of climate change predictions for the Amazon basin reveal a wide range of rainfall responses, from slight gains to major losses.
In the twenty-first century, climate change and deforestation could put Amazon rainforests at risk, according to the study’s conclusions.