A Look Into AmazoniaTropical Deforestation

Ross Pysh

Susan Johnson

Rachel Ross

Outline

Hypothesis

Deforestation and Biodiversity

Climate Change and the Global Carbon Cycle

Social and Political Aspects

Possible Solutions

Conclusion

Hypothesis

The destruction of the tropical rainforests, predominately in Amazonia, will substantially affect the biodiversity of the area and will alter various trends in the global carbon cycle. The extent and time scale of tropical rainforest destruction will depend on the social and political decisions governing the system and we believe potential solutions are not out of reach.

Deforestation

150 acres of rainforest are lost every minute, vanishing at a rate of nearly

20,000 square miles a

year. (Taylor)

http://www.commondreams.org/headlines04/images/0409-02.jpg

Biodiversity

Biodiversity is the variety and variability of living organisms and the ecological complexes in which they occur. (Allen)

Today, tropical forests cover about

7% of the earth’s surface, but are thought to contain 50% of the world’s biodiversity. (Kling)

Fragmentation

http://books.nap.edu/books/0309037395/html/20.html

“Species and ecosystemsare threatened with destruction to an extentrarely seen in earths history” (Allen)

Much of this extinction Is caused by habitat loss and one culprit is fragmentation.

Value of Biodiversity One acre of land-

-Sustainably harvested yields $2400.

-Cut for lumber earns $400

-Raising cattle on the land $60.

(Taylor)

http://www.rainforestandreef.org/images/photos/peru_low/rainforest_square_250.jpg

-265,000 species of plants in the tropical forests

-Only 3% have been tested for medicinal value.

-Of this 3%, 25% of the medicines we have available to us today have been derived.

(Taylor)

Climate Change

Deforestation

of the rainforest affects the

global carbon cycle which is

ultimately contributing to

global warming.

(Kling Lectures)

(Kling Lectures)

Stella Model – Global Change 1 (Lab 13)

Why is Bad

Cutting - 5,102,945,952 years

Cutting and Burning- 5,098, 627.787 years

Respiration!

The difference- 5,097,847,324 years.

Nutrient and Water Cycles

• Slash and Burn is extremely damaging to these cycles.

• Most of the Nutrients in Tropical Rainforests are within the biomass.

• Runoff removes nutrients from the system.

Social Aspects• The greatest cause of tropical rainforest

destruction today comes from human activities (60%), which unlike natural damage, are unrelenting and extremely thorough. (Mongabay)

• Landless peasants are forced to inhabit the only free land available: the forest, because of a monopoly of productive land in the south. (ROA)

Social Policies• Very easy to acquire land rights.

Squatters gain rights by using the land for only a year and a day. (Mongabay)

• After 5 years of land use the squatter gains ownership of the land and up until the mid 90’s ownership was granted to a plot of land 3 times what was actually cleared by the user. (Mongabay)

Political Aspects• Debt is a major driving force behind

deforestation. (Mongabay)

• Government subsidies and tax incentives offered to people to develop land. (ROA)

• Don’t have the money to implement and enforce environmental policies. IBAMA Brazil’s environmental protection agency was only given 9.5 million to police the biggest expanse of tropical wilderness in the world. (Mongabay)

Political cont…• The government has strong alliances

with the powerful elites, with no tradition of opposing influential economic interests. (Moran)

• Government projects like the Trans Amazonian Highway opens the forest up to peasant settlement by offering a lot of incentives and grants easy access to its resources. (Mongabay)

• Bulk of subsidized credit in Brazil goes toward the development of large scale properties. (Moran)

Potential Solutions

Aide from developed nations-

-.04% of the GDP (6-8 billion dollars) of industrialized countries goes towards conservation related activities. (Tobey)

-The same countries spend 125 billion dollars a year on their militaries. (Cunningham)

Conclusions

There are many possible solutions that could be implemented in the Amazon but all take a lot of effort and capital from both the developed and developing countries.

Social and political aspects are the major players in this situation and the first step to curving deforestation is to address these.

References• Allen, David. 2005. Threats to Global Biodiversity. Global Change II

Lectures. University of Michigan.• Cunningham, William and Mary and Barbara Saigo. 2005. Environmental

Science A Global Concern. McGraw-Hill. New York.• http://www.rainforestandreef.org/images/photos/peru_low/

rainforest_square_250.jpg• http://books.nap.edu/books/0309037395/html/20.html• http://www.commondreams.org/headlines04/images/0409-02.jpg• Kling, George. 2004. Tropical Forests. Global Change I Lectures.

University of Michigan.• Mongabay. http://rainforest.mongabay.com/amazon/20brazil.htm• Moran, Emilio. 1999. The Law, Politics, and Economics of Amazon

Deforestation. http://www.ecotourism.org.hk/other%20files/Amazonian%20deforestation.doc

• (ROA) The Rape of the Amazon. http://homepage.mac.com/voyager/gta/amaz.html

• Taylor, Joy and Wayne Stuppel. 2004. Amazon Rainforest – More Valuable Alive than Dead. Appropriate Technology. Vol. 31. Iss. 1; p. 40.

• Tobey, James. 1993. Toward a Global Effort to Protect the Earth’s Biological Diversity. World Development. Vol. 21. No. 12. pp. 1931-1945.