• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Causes of Reduced Biodiversity in the Amazon Forest

Extracts from this document...

Introduction

Causes of Reduced Biodiversity in the Amazon Forest Explain in two paragraphs the "causes of rainforest degradation" diagram. Amazonian deforestation in the global context: The diagram is like a complex circle. It shows the Amazonian deforestation in the global context. Countries from all over the world have fears of different diseases. North America and Europe for example have fear of the avian flu and Russia and China have fear of BSE. That?s why more and more countries don?t want to get their products from Asian countries, which is mostly the origin of those diseases. This leads to an increase in global demand for other parts of the world (e.g. Latin America). This high increase again leads to pressure and as a result a rise in commodity prices, technological progress, rise in land prices and devaluation of Brazilian currency boosting exports. This again leads to a massive deforestation of Amazonia in Latin America. There?s a land speculation by clearing forest. This area can be converted into cattle pastures or into soya fields, which both also have a development in transport and industrial infrastructure as a result. ...read more.

Middle

Licensing theoretically strictly controls logging in the Amazon, which allows timber to be harvested only in certain areas. However, the environmental group, Greenpeace, estimates that 60-80% of all logging in the Brazilian Amazon is illegal. Consequences: Many tree and plant species are at a risk of extinction due to deforestation. The International Union for Conservation of Nature calculates that there are about 382 plant species and 343 different types of mammals in Brazil at a risk. Large-scale deforestation could also lead to global warming. The Amazon absorbs a lot of carbon dioxide, which is very important for us. But when they cut too man trees down the absorption of carbon dioxide would strongly decrease. Forecast of the forest?s future predict that deforestation will continue. The WWF thinks that by 2030 30% of the forest will be lost if deforestation continues at this high level and these climate conditions. 3. Take notes on the social, economic, environmental and political consequences of rainforest degradation. Social consequences: For local people the quality of life would improve rapidly when a forest first cleared. ...read more.

Conclusion

Environmental consequences: Due to humans who clear the natural landscape to make room for farms and pastures, to harvest timber for construction and fuel, and to build roads and urban areas tropical forests of all varieties are disappearing rapidly. When farmers completely deforested an area, they burn the trees and vegetation to create a fertilizing layer of ash. After this slash-and-burn deforestation, the nutrient reservoir is lost, flooding and erosion rates are high, and soil often becomes unable to support crops in just a few years. If the area then is turned into cattle pasture, the ground may become compacted as well. This could slow down and prevent forest recovery. About half of all Earth?s species live in tropical rainforest. When area is totally deforested the species is lost, the plants and animals in the fragments of forest that remain also become increasingly vulnerable. As more trees are felled, there will be fewer trees to absorb the carbon dioxide from the atmosphere by the process of photosynthesis. Thus, the global carbon dioxide level is expected to increase in the greenhouse effect. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Geography section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Geography essays

  1. Marked by a teacher

    Population in Brazil

    5 star(s)

    The city was called Brasilia (figure 6) and it is located more or less to the center of Brazil. It has become famous for its urban planning and overpopulation. As the city is only 50 years old, only half of the inhabitants are locals, the others mave mostly migrated from surrounding states like Minas and Rio.

  2. Marked by a teacher

    Examine the causes and the effects of biodiversity loss in the Tropical Rainforests

    4 star(s)

    This step itself holds many drastic effects: the most significant of them being an increase in the carbon dioxide emissions and the loss of habitat and the loss of biodiversity for thousands of species per year. Cattle ranching is the leading cause of deforestation in the Brazilian Amazon.This has been

  1. There are a variety of causes and constraints affecting peoples decisions to migrate ...

    countries to provide a source of labour for such labour intensive industries. The UK gradually became a more cosmopolitan society bringing new advantages such as new skills, enhanced cultural diversity and new sources of enterprise and labour. There were also disadvantages relating to racial tension, often highlighted in areas of social deprivation and high unemployment.

  2. Foreign Talent-Dilemma in Singapore. as we shall explain, illustrate and seek to convince in ...

    the former Japan-Singapore Institute of Software Technology were set up, foreign technical specialists from these countries were attached to our tertiary institutions and had helped in the development of course curricula and training of staff. In addition, they have also helped to raise the standard of the research work. 17.

  1. Development vs. Conservation - A Debate

    schemes, such as the Xiaolangdi Dam, are being drawn up for the future to help fuel China's development. China's development over the years can be seen through several socioeconomic indicators. These indicators reflect the country's social and economic progress, and are strongly linked to how much the country has developed.

  2. Forestry Revival - The Revolution in Canadas Forest Industry

    Canadian forestry hauls in a whopping 73 046 million dollars in revenue (based on 2001 data), and forests cover close to half (4 187 820 km2 or 42%) of Canada?s total area. As for its environmental impacts, logging methods and ecologic hazards could paint a bleak future for Canadian forests.

  1. Malaria Conditions in Venezuela

    2003 May - Government, opposition sign deal brokered by Organisation of American States (OAS) which sets out framework for referendum on Hugo Chavez's rule. 2005 January - President Chavez signs decree on land reform which aims to eliminate Venezuela's large estates.

  2. Discuss the causes of overfishing and evaluate the attempts to remedy this problem

    and a complete lack of focus of the government to its police force in its waters drew fleets from countries near and distant, setting the stage for the instability to come. The greatest harm was done by European and Asian vessels that swarmed the fisheries off Somalia's coast.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work