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The Amazon Rainforest (Brazilian Portuguese: Floresta Amazônica or Amazônia; [Selva Amazónica or Amazonía] Error: {{Lang-xx}}: text has italic markup (help)), also known as Amazonia, or the Amazon jungle, is a moist broadleaf forest that covers most of the Amazon Basin of South America. The Basin encompasses seven million square kilometers (1.7 billion acres), of which five and a half million square kilometers (1.4 billion acres) are covered by the rainforest. This region includes territory belonging to nine nations. The majority of the forest is contained within Brazil, with 60 percent of the rainforest, followed by Peru with 13 percent of the rainforest, and with minor amounts in Colombia, Venezuela, Ecuador, Bolivia, Guyana, Suriname, and French Guiana. States or departments in four nations bear the name Amazonas after it. The Amazon represents over half of the planet's remaining rainforests, and it comprises the largest and most species-rich tract of tropical rainforest in the world.

Etymology

The name Amazon is said to arise from a war which Francisco de Orellana had with a tribe of Tapuyas and other tribes from South America. The women of the tribe fought alongside the men, as was the custom among the entire tribe.[1] Orellana's descriptions may have been accurate, but a few historians speculate that Orellana could have been mistaking indigenous men wearing "grass skirts" for women.[citation needed] Orellana derived the name Amazonas from the ancient Amazons of Asia and Africa described by Herodotus and Diodorus in Greek legends.[1]

Another etymology for the word suggests that it came originally from a native word amazona (Spanish spelling) or amassona (Portuguese spelling), meaning "destroyer (of) boats", in reference to the destructive nature of the root system possessed by some riparian plants.

History

File:Paleogene-EoceneGlobal.jpg
Earth during the Eocene

The rainforest likely formed during the Eocene era, following the evolutionary appearance of angiosperm plants. It appeared following a global reduction of tropical temperatures when the Atlantic Ocean had widened sufficiently to provide a warm, moist climate to the Amazon basin. The rain forest has been in existence for at least 55 million years, and most of the region remained free of savanna-type biomes during that time period.[2][3]

Following the K/T event, the extinction of the dinosaurs and the wetter climate may have allowed the tropical rainforest to spread out across the continent. From 65–34 Mya, the rainforest extended as far south as 45°. Climate fluctuations during the last 34 million years have allowed savanna regions to expand into the tropics. During the Oligocene, for example, the rainforest spanned a relatively narrow band that lay mostly above latitude 15°N. It expanded again during the Middle Miocene, then retracted to a mostly inland formation at the last glacial maximum.[4] However, the rainforest still managed to thrive during these glacial periods, allowing for the survival and evolution of a broad diversity of species.[5]

During the mid-Eocene, it is believed that the drainage basin of the Amazon was split along the middle of the continent by the Purus Arch. Water on the eastern side flowed toward the Atlantic, while to the west water flowed toward the Pacific across the Amazonas Basin. As the Andes Mountains rose, however, a large basin was created that enclosed a lake; now known as the Solimões Basin. Within the last 5–10 million years, this accumulating water broke through the Purus Arch, joining the easterly flow toward the Atlantic.[6][7]

There is evidence that there have been significant changes in Amazon rainforest vegetation over the last 21,000 years through the last glaciation (LGM) and subsequent deglaciation. Analyses of sediment deposits from Amazon basin paleolakes and from the Amazon 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.[8] There is debate, however, over how extensive this reduction was. Some scientists argue that the rainforest was reduced to small, isolated refugia separated by open forest and grassland;[9] other scientists argue that the rainforest remained largely intact but extending less far to the North, South, and East than is seen today.[10] This debate has proved difficult to resolve because the practical limitations of working in the rainforest mean that data sampling is biased away from the center of the Amazon basin, and both explanations are reasonably well supported by the available data.

Based on archaeological evidence from an excavation at Caverna da Pedra Pintada, human inhabitants first settled in the Amazon region at least 11,200 years ago.[11] Subsequent development led to late-prehistoric settlements along the periphery of the forest by 1250 CE, which induced alterations in the forest cover.[12] Biologists believe that a population density of 0.2 persons/km2 is the maximum that can be sustained in the rain forest through hunting. Hence, agriculture is needed to host a larger population.[13] The first European to travel the length of the Amazon river was Francisco de Orellana in 1542.

Biodiversity

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.
NASA satellite observation of deforestation in the Mato Grosso state of Brazil. The transformation from forest to farm is evident by the paler square shaped areas under development.

Wet tropical forests are the most species-rich biome, and tropical forests in the Americas are consistently more species rich than the wet forests in Africa and Asia.[14] As the largest tract of tropical rainforest in the Americas, the Amazonian rainforests have unparalleled biodiversity. One in ten known species in the world live in the Amazon Rainforest.[15] This constitutes the largest collection of living plants and animal species in the world.

The region is home to about 2.5 million insect species,[16] tens of thousands of plants, and some 2000 birds and mammals. To date, at least 40,000 plant species, 3,000 fish, 1,294 birds, 427 mammals, 428 amphibians, and 378 reptiles have been scientifically classified in the region.[17] One in five of all the birds in the world live in the rainforests of the Amazon. Scientists have described between 96,660 and 128,843 invertebrate species in Brazil alone.[18]

The diversity of plant species is the highest on Earth with some experts estimating that one square kilometer may contain over 75,000 types of trees and 150,000 species of higher plants. One square kilometer of Amazon rainforest can contain about 90,790 tonnes of living plants. The average plant biomass is estimated at 356 ± 47 tonnes ha−1.[19] To date, an estimated 438,000 species of plants of economic and social interest have been registered in the region with many more remaining to be discovered or catalogued.[20]

The green leaf area of plants and trees in the rainforest vary by about 25% as a result of seasonal changes. Leaves expand during the dry season when sunlight is at a maximum, then undergo abscission in the cloudy wet season. These changes provide a balance of carbon between photosynthesis and respiration.[21]

The rainforest contains several species that can pose a hazard. Among the largest predatory creatures are the Black Caiman, Jaguar and Anaconda. In the river, electric eels can produce an electric shock that can stun or kill, while Piranha are known to bite and injure humans.[22] Various species of poison dart frogs secrete lipophilic alkaloid toxins through their flesh. There are also numerous parasites and disease vectors. Vampire bats dwell in the rainforest and can spread the rabies virus.[23] Malaria, yellow fever and Dengue fever can also be contracted in the Amazon region.

Deforestation

Main article: Deforestation of the Amazon Rainforest

Deforestation is the conversion of forested areas to non-forested areas. The main sources of deforestation in the Amazon are human settlement and development of the land.[24] Prior to the early 1960s, access to the forest's interior was highly restricted, and the forest remained basically intact.[25] Farms established during the 1960s was based on crop cultivation and the slash and burn method. However, the colonists were unable to manage their fields and the crops due to the loss of soil fertility and weed invasion.[26] The soils in the Amazon are productive for just a short period of time, so farmers are constantly moving to new areas and clearing more and more land.[26] These farming practices led to deforestation and caused extensive environmental damage.[27]

Between 1991 and 2000, the total area of forest lost in the Amazon rose from 415,000 to 587,000 km², with most of the lost forest becoming pasture for cattle.[28] 70% of formerly forested land in the Amazon, and 91% of land deforested since 1970, is used for livestock pasture.[29][30] In addition, Brazil is currently the second-largest global producer of soybeans after the United States. The needs of soy farmers have been used to validate many of the controversial transportation projects that are currently developing in the Amazon. The first two highways successfully opened up the rain forest and led to increased settlement and deforestation. The mean annual deforestation rate from 2000 to 2005 (22,392 km² per year) was 18% higher than in the previous five years (19,018 km² per year).[31] At the current rate, in two decades the Amazon Rainforest will be reduced by 40%.[32]

Conservation and climate change

See also: Gaviotas

Environmentalists are concerned about the loss of biodiversity which will result from destruction of the forest, and also about the release of the carbon contained within the vegetation, which could accelerate global warming. Amazonian evergreen forests account for about 10% of the world's terrestrial primary productivity and 10% of the carbon stores in ecosystems[33] — of the order of 1.1 x 1011 metric tonnes of carbon.[34] Amazonian forests are estimated to have accumulated 0.62 ± 0.37 tons of carbon per hectare per year between 1975 and 1996.[34]

Anthropogenic emission of greenhouse gases broken down by sector for the year 2000

One computer model of future climate change due to greenhouse gas emissions shows that the Amazon rainforest could become unsustainable under conditions of severely reduced rainfall and increased temperatures, leading to an almost complete loss of rainforest cover in the basin by 2100.[35][36] However, simulations of Amazon basin climate change across many different models are not consistent in their estimation of any rainfall response, ranging from weak increases to strong decreases.[37] The result indicates that the rainforest could be threatened though the 21st century by climate change in addition to deforestation.

Aerial roots of red mangrove on an Amazonian river

In 1989, environmentalist C.M. Peters and two colleagues have stated there is not only a biological incentive to protecting the rainforest, but also an economic one. One hectare in the Peruvian Amazon has been calculated to have a value of $6820 if intact forest is sustainably harvested for fruits, latex, and timber; $1000 if clear-cut for commercial timber (not sustainably harvested); or $148 if used as cattle pasture.[38]

As indigenous territories continue to be destroyed by deforestation, and ecocide, such as in the Peruvian Amazon[39] indigenous peoples' rainforest communities continue to disappear, while others, like the Urarina continue to struggle to fight for their cultural survival and the fate of their forested territories. Meanwhile, the relationship between nonhuman primates in the subsistence and symbolism of indigenous lowland South American peoples has gained increased attention, as has ethno-biology and community-based conservation efforts.

From 2002 to 2006, the conserved land in the Amazon Rainforest has almost tripled and deforestation rates have dropped up to 60%. About 1,000,000 square kilometres (250,000,000 acres) have been put onto some sort of conservation, which adds up to a current amount of 1,730,000 square kilometres (430,000,000 acres).[40]

Remote sensing

The use of remotely sensed data is dramatically improving conservationists' knowledge of the Amazon Basin. Given the objectivity and lowered costs of satellite-based land cover analysis, it appears likely that remote sensing technology will be an integral part of assessing the extent and damage of deforestation in the basin.[41] Furthermore, remote sensing is the best and perhaps only possible way to study the Amazon on a large-scale.[42]

The use of remote sensing for the conservation of the Amazon is also being used by the indigenous tribes of the basin to protect their tribal lands from commercial interests. Using handheld GPS devices and programs like Google Earth, members of the Trio Tribe, who live in the rainforests of southern Suriname, map out their ancestral lands to help strengthen their territorial claims.[43] Currently, most tribes in the Amazon do not have clearly defined boundaries, which make their territories easy targets for commercial poaching of natural resources. Through the use of cheap mapping technology, the Trio Tribe hopes to protect its ancestral land.

In order to accurately map the biomass of the Amazon, and subsequent carbon related emissions, the classification of tree growth stages within different parts of the forest are crucial. In 2006 Tatiana Kuplich organized the trees of the Amazon into four categories: (1) mature forest, (2) regenerating forest [less than three years], (3) regenerating forest [between three and five years of regrowth], and (4) regenerating forest [eleven to eighteen years of continued development].[44] The researcher used a combination of Synthetic aperture radar (SAR) and Thematic Mapper (TM) to accurately place the different portions of the Amazon into one of the four classifications.

Impact of Amazon drought

In 2005, parts of the Amazon basin experienced the worst drought in 100 years,[45] and there were indications that 2006 could have been a second successive year of drought.[46] A 23 July 2006 article in the UK newspaper The Independent reported Woods Hole Research Center results showing that the forest in its present form could survive only three years of drought.[47][48] Scientists at the Brazilian National Institute of Amazonian Research argue in the article that this drought response, coupled with the effects of deforestation on regional climate, are pushing the rainforest towards a "tipping point" where it would irreversibly start to die. It concludes that the forest is on the brink of being turned into savanna or desert, with catastrophic consequences for the world's climate.

According to the WWF, the combination of climate change and deforestation increases the drying effect of dead trees that fuels forest fires.[49]

Territorial contest

Some politicians and journalists believe that the Amazon belongs to all humanity, and so it should be an international area.[50] Al Gore said in 1989: "Contrary to what Brazilians think, the Amazon is not their property, it belongs to all of us." [51] There is much controversy on this in Brazilian press, government and society suggesting this argument hurts the nation's sovereignty. [52]

In May 2008, The New York Times wrote an article titled Whose Rain Forest Is This, Anyway? [53] The article was received controversially in Brazil [54][55] forcing the President Lula to answer "the Amazon belongs to Brazilians," [56][57] and later with more aggressive response: "North Americans have no moral authority to complain about Amazonia, they point fingers dirty with oil." [58][59]

There is a debate in Brazilian society if the Amazon could be invaded resulting in a war. [60][61][62] The Brazilian Amazon border is patrolled and guarded by the Brazilian Army. [63][64][65]

See also

References and footnotes

  1. ^ a b Taylor, Isaac (1898). Names and Their Histories: A Handbook of Historical Geography and Topographical Nomenclature. London: Rivingtons. Retrieved 2008-10-12.
  2. ^ Morley, Robert J. (2000). Origin and Evolution of Tropical Rain Forests. Wiley. ISBN 0471983268.
  3. ^ Burnham, Robyn J. (2004). "South American palaeobotany and the origins of neotropical rainforests". Philosophical Transactions of the Royal Society. 359 (1450): 1595–1610. doi:10.1098/rstb.2004.1531. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  4. ^ Maslin, Mark (2005). "New views on an old forest: assessing the longevity, resilience and future of the Amazon rainforest" (PDF). Transactions of the Institute of British Geographers. 30 (4): 477–499. doi:10.1111/j.1475-5661.2005.00181.x. Retrieved 2008-09-25. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  5. ^ Malhi, Yadvinder (2005). Tropical Forests & Global Atmospheric Change. Oxford University Press. ISBN 0198567065. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  6. ^ Costa, João Batista Sena (2001). "Tectonics and paleogeography along the Amazon river". Journal of South American Earth Sciences. 14 (4): 335–347. doi:10.1016/S0895-9811(01)00025-6. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  7. ^ Milani, Edison José (1999). "An outline of the geology and petroleum systems of the Paleozoic interior basins of South America" (PDF). Episodes. 22 (3): 199–205. Retrieved 2008-09-25. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)CS1 maint: extra punctuation (link) CS1 maint: multiple names: authors list (link)
  8. ^ Colinvaux, P.A., De Oliveira, P.E. 2000. Palaeoecology and climate of the Amazon basin during the last glacial cycle. Wiley InterScience. (abstract)
  9. ^ Van der Hammen, T., Hooghiemstra, H.. 2002. Neogene and Quaternary history of vegetation, climate, and plant diversity in Amazonia. Elsevier Science Ltd. (abstract)
  10. ^ Colinvaux, P. A. (2000). "Amazonian and neotropical plant communities on glacial time-scales: The failure of the aridity and refuge hypotheses". Quaternary Science Reviews. 19 (1–5): 141–169. doi:10.1016/S0277-3791(99)00059-1. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |month= ignored (help)
  11. ^ Roosevelt, A. C. (1996-04-19). "Paleoindian Cave Dwellers in the Amazon: The Peopling of the Americas". Science. 272 (5260): 373–384. doi:10.1126/science.272.5260.373. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help); line feed character in |coauthors= at position 38 (help)CS1 maint: extra punctuation (link)
  12. ^ Heckenberger, Michael J. (2003-09-19). "Amazonia 1492: Pristine Forest or Cultural Parkland?". Science. 301 (5640): 1710–1714. doi:10.1126/science.1086112. PMID 14500979. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  13. ^ Meggers, Betty J. (2003-12-19). "Revisiting Amazonia Circa 1492". Science. 302 (5653): 2067–2070. doi:10.1126/science.302.5653.2067b. PMID 14684803.
  14. ^ Turner, I.M. 2001. The ecology of trees in the tropical rain forest. Cambridge University Press, Cambridge. ISBN 0-521-80183-4
  15. ^ "Amazon Rainforest, Amazon Plants, Amazon River Animals". World Wide Fund for Nature. Retrieved 2008-05-06.
  16. ^ "Photos / Pictures of the Amazon Rainforest". Travel.mongabay.com. Retrieved 2008-12-18.
  17. ^ Da Silva, Jose Maria Cardoso; et al. (2005). "The Fate of the Amazonian Areas of Endemism". Conservation Biology. 19 (3): 689–694. doi:10.1111/j.1523-1739.2005.00705.x. {{cite journal}}: Explicit use of et al. in: |author= (help)
  18. ^ Lewinsohn, Thomas M. (2005). "How Many Species Are There in Brazil?". Conservation Biology. 19 (3): 619–624. doi:10.1111/j.1523-1739.2005.00680.x. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |month= ignored (help)
  19. ^ Laurance, William F. (1999-06-14). "Relationship between soils and Amazon forest biomass: a landscape-scale study". Forest Ecology and Management. 118 (1–3): 127–138. doi:10.1016/S0378-1127(98)00494-0. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  20. ^ "Amazon Rainforest". South AmericaTravel Guide. Retrieved 2008-08-19.
  21. ^ Mynenia, Ranga B.; et al. (2007-03-13). "Large seasonal swings in leaf area of Amazon rainforests". Procedings of the National Academy of Science. 104 (12): 4820–4823. doi:10.1073/pnas.0611338104. {{cite journal}}: Explicit use of et al. in: |author= (help)
  22. ^ Staff (2007-07-02). "Piranha 'less deadly than feared'". BBC News Online. Retrieved 2007-07-02.
  23. ^ da Rosa, Elizabeth S. T.; et al. (2006). "Bat-transmitted Human Rabies Outbreaks, Brazilian Amazon" (PDF). Emerging Infectious Diseases. 12 (8): 1197–1202. Retrieved 2008-10-11. {{cite journal}}: Explicit use of et al. in: |author= (help); Unknown parameter |month= ignored (help)
  24. ^ Various (2001). Bierregaard, Richard; Gascon, Claude; Lovejoy, Thomas E.; Mesquita, Rita (ed.). Lessons from Amazonia: The Ecology and Conservation of a Fragmented Forest. Yale University Press. ISBN 0300084838.{{cite book}}: CS1 maint: multiple names: editors list (link)
  25. ^ Kirby, Kathryn R.; Laurance, William F.; Albernaz, Ana K.; Schroth, Götz; Fearnside, Philip M.; Bergen, Scott; M. Venticinque, Eduardo; Costa, Carlos da (2006). "The future of deforestation in the Brazilian Amazon". Futures. 38 (4): 432–453. doi:10.1016/j.futures.2005.07.011.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  26. ^ a b Watkins and Griffiths, J. (2000). Forest Destruction and Sustainable Agriculture in the Brazilian Amazon: a Literature Review (Doctoral dissertation, The University of Reading, 2000). Dissertation Abstracts International, 15-17
  27. ^ Williams, M. (2006). Deforesting the Earth: From Prehistory to Global Crisis (Abridged edition ed.). Chicago, IL: The University of Chicago Press. ISBN 0226899470. {{cite book}}: |edition= has extra text (help)
  28. ^ Centre for International Forestry Research (CIFOR) (2004)
  29. ^ Steinfeld, Henning; Gerber, Pierre; Wassenaar, T. D.; Castel, Vincent (2006). Livestock's Long Shadow: Environmental Issues and Options. Food and Agriculture Organization of the United Nations. ISBN 9251055718. Retrieved 2008-08-19.{{cite book}}: CS1 maint: multiple names: authors list (link)
  30. ^ Margulis, Sergio (2004). "Causes of Deforestation of the Brazilian Amazon" (PDF). World Bank Working Paper No. 22. Washington D.C.: The World Bank. ISBN 0821356917. Retrieved 2008-09-04.
  31. ^ Barreto, P.; Souza Jr. C.; Noguerón, R.; Anderson, A. & Salomão, R. 2006. Human Pressure on the Brazilian Amazon Forests. Imazon. Retrieved September 28, 2006. (The Imazon web site contains many resources relating to the Brazilian Amazonia.)
  32. ^ (National Geographic, January 2007)
  33. ^ Melillo, J. M. (1993-05-20). "Global climate change and terrestrial net primary production". Nature. 363: 234–240. doi:10.1038/363234a0. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  34. ^ a b Tian, H. (2000). "Climatic and biotic controls on annual carbon storage in Amazonian ecosystems". Global Ecology and Biogeography. 9 (4): 315–335. doi:10.1046/j.1365-2699.2000.00198.x. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |month= ignored (help)
  35. ^ Cox, Betts, Jones, Spall and Totterdell. 2000. Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model. Nature, November 9, 2000. (subscription required)
  36. ^ Radford, T. 2002. World may be warming up even faster. The Guardian.
  37. ^ Houghton, J.T. et al. 2001. Climate Change 2001: The Scientific Basis. Intergovernmental Panel on Climate Change.
  38. ^ Peters, C.M. (1989). "Valuation of an Amazonian forest". Nature. 339: 656–657. doi:10.1038/339655a0. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  39. ^ Dean, Bartholomew. (2003) State Power and Indigenous Peoples in Peruvian Amazonia: A Lost Decade, 1990-2000. In The Politics of Ethnicity Indigenous Peoples in Latin American States David Maybury-Lewis, Ed. Harvard University Press
  40. ^ Cormier, L. (April 16, 2006). "A Preliminary Review of Neotropical Primates in the Subsistence and Symbolism of Indigenous Lowland South American Peoples". Ecological and Environmental Anthropology. 2 (1): 14–32. Retrieved 2008-09-04.
  41. ^ Wynne, R. H.; Joseph, K. A.; Browder, J. O.; Summers, P. M. (2007). "A Preliminary Review of Neotropical Primates in the Subsistence and Symbolism of Indigenous Lowland South American Peoples". International Journal of Remote Sensing. 28: 1299–1315. doi:10.1080/01431160600928609. Retrieved 2008-09-04.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  42. ^ Asner, Gregory P. (2005). "Ecosystem Structure throughout the Brazilian Amazon from Landsat Observations and Automated Spectral Unmixing". Earth Interactions. 9 (1): 1–31. doi:10.1175/EI134.1. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |month= ignored (help)
  43. ^ Isaacson, Andy. 2007. With the Help of GPS, Amazonian Tribes Reclaim the Rain Forest. Wired 15.11: http://www.wired.com/science/planetearth/magazine/15-11/ps_amazon
  44. ^ Kuplich, Tatiana M. (2006). "Classifying regenerating forest stages in Amazônia using remotely sensed images and a neural network". Forest Ecology and Management. 234 (1–3): 1–9. doi:10.1016/j.foreco.2006.05.066. {{cite journal}}: Unknown parameter |month= ignored (help)
  45. ^ Environmental News Service - Amazon Drought Worst in 100 Years
  46. ^ Drought Threatens Amazon Basin - Extreme conditions felt for second year running
  47. ^ Amazon rainforest 'could become a desert' , The Independent, July 23, 2006. Retrieved September 28, 2006.
  48. ^ Dying Forest: One year to save the Amazon, The Independent, July 23, 2006. Retrieved September 28, 2006.
  49. ^ Climate change a threat to Amazon rainforest, warns WWF, World Wide Fund for Nature, March 22, 2006. Retrieved September 28, 2006.
  50. ^ http://www.terra.com.br/istoe/edicoes/2012/imagens/brasilamazonia6_28.jpg
  51. ^ Brazil can preserve Amazon rainforest without outside help, says president
  52. ^ "Estadao.com.br :: Geral :: Soberania sobre Amazônia é brasileira, diz presidente do STF". Estadao.com.br. Retrieved 2008-12-18.
  53. ^ Barrionuevo, Alexei (May 18, 2008). "Does the Amazon Belong to Brazil — or the Whole World? - New York Times". Nytimes.com. doi:Brazil. Retrieved 2008-12-18. {{cite news}}: Check |doi= value (help)
  54. ^ "'De quem é a Amazônia, afinal?', diz 'NY Times' - O Globo Online" (in Template:Pt icon). Oglobo.globo.com. Retrieved 2008-12-18.{{cite web}}: CS1 maint: unrecognized language (link)
  55. ^ "Brasil - Último Segundo - Minc critica texto do New York Times sobre Amazônia". Ultimosegundo.ig.com.br. Retrieved 2008-12-18.
  56. ^ "MSN News UK - news & weather". News.uk.msn.com. Retrieved 2008-12-18.
  57. ^ Do G1, no Rio e em São Paulo. "G1 > Política - NOTÍCIAS - Amazônia brasileira tem dono, diz Lula". G1.globo.com. Retrieved 2008-12-18.{{cite web}}: CS1 maint: numeric names: authors list (link)
  58. ^ JEFERSON RIBEIRO Do G1, em Brasília. "G1 > Política - NOTÍCIAS - 'Todo mundo acha que pode meter dedo na Amazônia', diz Lula". G1.globo.com. Retrieved 2008-12-18.{{cite web}}: CS1 maint: numeric names: authors list (link)
  59. ^ "Dedos que apontam contra biocombustíveis estão sujos de óleo e carvão", diz Lula em Roma - 03/06/2008 - UOL Últimas Notícias - Internacional
  60. ^ :: Tem Notícia :: O Jornal do pensamento Brasileiro
  61. ^ "Guerra na Amazônia - Terra - Roberto Souza Causo". Terramagazine.terra.com.br. Retrieved 2008-12-18.
  62. ^ ":::: Soberania Nacional ::::". Oquintopoder.com.br. Retrieved 2008-12-18.
  63. ^ "Exército vigia fronteira com Colômbia | BBC Brasil | BBC World Service". Bbc.co.uk. Retrieved 2008-12-18.
  64. ^ AltSoluções Interativas Ltda. "NOTÍCIAS 24 HORAS - Exército realiza operação 'Guardião da Fronteira' na Amazônia- Portal Amazônia". Portalamazonia.globo.com. Retrieved 2008-12-18.
  65. ^ ": Exército Brasileiro - Braço Forte, Mão Amiga :". Exercito.gov.br. Retrieved 2008-12-18.
  • Sheil, D. and S. Wunder. 2002. The value of tropical forest to local communities: complications, caveats, and cautions. Conservation Ecology 6(2): 9. [1]
  • "Deforestation." World Geography. Columbus, Ohio: McGraw-Hill/Glencoe, 2000. 202-204
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