Deforestation in the amazon rainforest literature review

Leaves expand during the dry season when sunlight is at a maximum, then undergo abscission in the cloudy wet season. To date, at least 40, plant species, 2, fishes[32] 1, birds, mammals, amphibians, and reptiles have been scientifically classified in the region.

Analyses of sediment deposits from Amazon basin paleolakes and from the Deforestation in the amazon rainforest literature review Fan indicate that rainfall in the basin during the LGM was lower than for the present, and this was almost certainly associated with reduced moist tropical vegetation cover in the basin.

Deforestation: Review of Literature

CALIPSO has measured variations in the dust amounts transported— an 86 percent drop between the highest amount of dust transported in and the lowest in Modeling local- to regional-scale climate change.

After eight years of the moratorium, a study found that although soy production area had expanded another 1. Evidence that deforestation affects the onset of the rainy season in Rondonia, Brazil. Water on the eastern side flowed toward the Atlantic, while to the west water flowed toward the Pacific across the Amazonas Basin.

However, rates of deforestation jumped again in[29] [30] and Deforestation causes different subregional effects on the Amazon bioclimatic equilibrium. Vampire bats dwell in the rainforest and can spread the rabies virus.

Some scientists argue that the rainforest was reduced to small, isolated refugia separated by open forest and grassland; [11] other scientists argue that the rainforest remained largely intact but extended less far to the north, south, and east than is seen today. Journal of Geophysical Research: Recent rates of forest harvest and conversion in North America.

This research elaborates the impacts of deforestation on the climate of the Amazon and its surroundings and the typical climate of amazon is changing with the changing times. In the river, electric eels can produce an electric shock that can stun or kill, while piranha are known to bite and injure humans.

Deforestation is not a new phenomenon and it has been continued since centuries but its repercussions were not known in the medieval or later periods. The development of this fertile soil allowed agriculture and silviculture in the previously hostile environment; meaning that large portions of the Amazon rainforest are probably the result of centuries of human management, rather than naturally occurring as has previously been supposed.

The region is home to about 2. They have discussed elaborately the climate changes occuring in the Amazon due to excessive carbon di oxide emission and this research can be helpful while researching for the deforestation in the Amzaon.

It expanded again during the Middle Miocenethen retracted to a mostly inland formation at the last glacial maximum. The authors have conducted a thorough research which has showed that deforestation in the Amazon and its suburbs has disturbed the ecology of the suburbs and the Amazon itself to a relatively greater extent and the wet season which was deemed to stay away from Amazon has been being experienced in the Amazon.

Scientists have described between 96, andinvertebrate species in Brazil alone. Based on archaeological evidence from an excavation at Caverna da Pedra Pintadahuman inhabitants first settled in the Amazon region at least 11, years ago.

Among the largest predatory creatures are the black caimanjaguarcougarand anaconda. A possibility causing the variation is the Sahela strip of semi-arid land on the southern border of the Sahara.

The key turning point in deforestation of the Brazilian Amazon was when colonists began to establish farms within the forest during the s. Modeling fire-driven deforestation potential in Amazonia under current and projected climate conditions.

The dust contains phosphorusimportant for plant growth. She claimed that a population density of 0. The higher rainfall could make more vegetation grow in the Sahel, leaving less sand exposed to winds to blow away.

During the mid-Eoceneit is believed that the drainage basin of the Amazon was split along the middle of the continent by the Purus Arch. It is believed that the civilization was later devastated by the spread of diseases from Europe, such as smallpox.

The yearly Sahara dust replaces the equivalent amount of phosphorus washed away yearly in Amazon soil from rains and floods. Using the research conducted by Gabrielle Ferreira Pires and Marcos Heil Costa can be of very much help in the research regards as they have researched the precipitation effects and the sub regional effects of deforestation separately.

Among those were evidence of roads, bridges and large plazas. Their research work can be modified and used in the deforestation in amazon research work.

Its repercussions have shown great diversity of threats not only to mankind but also to the earth and the scientists and other organizations have been keenly working on its limitations. Man and Culture in a Counterfeit Paradise. Climate fluctuations during the last 34 million years have allowed savanna regions to expand into the tropics.

After the European colonization in the 16th century, with the hunt for goldWestern diseases, slavery and later the rubber boom, the Amazon Rainforest was depopulated and the forest grew larger.

Amazon rainforest

In parts of the Amazon, the poor soil made plantation-based agriculture unprofitable. Physical and biological feedbacks of deforestation.Oct 11,  · A growing number of scientists are warning that wide-scale deforestation — about 20 percent of the Amazon forest is gone already and nearly that much is degraded — may already be directing.

Deforestation of the Amazon rainforest

Deforestation of the Amazon rainforest can be attributed to many different factors at local, national, and international levels. The rainforest is seen as a resource for cattle pasture, valuable hardwoods, housing space, farming space (especially for soybeans), road works (such as highways and smaller roads) and medicines.

The state of Rondônia in western Brazil is one of the most deforested parts of the Amazon. This series shows deforestation on the frontier in the northwestern part of the state between and Deforestation: A Review of Literature The University of Texas at El Paso Aaron Gomez The purpose of this literature review is to define the causes of including rainforests in the Amazon, Congo Basin, Indonesia and the forests of 5/5(2).

1 Trade and Deforestation: A literature review* Juan Robalino and Luis Diego Herrera EfD Initiative, CATIE December This document was prepared for the World Trade Organization.

Deforestation in the Amazon rainforest threatens many species of tree frogs, which are very sensitive to environmental changes (pictured: giant leaf frog) Scarlet macaw, which is indigenous to the American tropics.

Deforestation in the amazon rainforest literature review
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