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Human Alterations, Deforestation, And Its Adverse Affects

1715 words - 7 pages

Through the progression of the Vitousek et al. class article describing domination of earth’s ecosystems by humans and subsequent articles describing what fuels deforestation and its adverse affects, much insight has been gained about land transformation. However all articles previously reviewed dealt with how agricultural methods, land transformation, and deforestation have affected solely ecological factors. Very little research has been done detailing which ways deforestation negatively affects humans. It is formerly understood that deforestation benefits the human lifestyle by yielding new space for crop production. A recent study published in 2014 has researched the ways that deforestation and other forest alteration practices could be negatively affecting humans. It is thought that the transmission rate of malaria is correlated with human alterations of rainforest in Brazil. The following article review will detail a study that examines this theory. This groundbreaking research is amongst the first that follows the paths of land transformation back around into a cycle affecting those that are initiating it.
Deforestation, timber extraction, fire, and selective logging have adverse affects on the spread of malaria in Brazil. The affects are addressed in Influence of Deforestation, Logging, and Fire on Malaria in the Brazilian Amazon, published in January of 2014 by Hahn et al. Malaria is a public health threat in Brazil and numerous human agricultural practices have created breeding sites for the malarial parasite (Anopheles Darling). Deforestation rates in Brazil range from 6,000 to 28,000 km2/year over the last decade. Hahn et al. know that deforestation is correlated with increased malaria but wanted to research how other factors affect the rate of malaria infection. Hahn et al. examined forest alterations including road density, fire, selective logging, deforestation, and some socio-demographic factors to see whether or not these alterations were further increasing malaria risk. The study took place in the Brazilian Amazon between 1997 and 2003. If underlying causes of increased malaria infections can be determined then policies can be implemented to prevent further infections in the Amazonian. Hahn et al. hypothesized that deforestation, selective logging, fire, and road production will lead to further malaria risk for inhabitants on a municipality level.
Hahn et al. conducted research in the Amazon Rainforest in Brazil; this rainforest accounts for just less than half of the world’s tropical rainforests. The area researched was divided into legal municipalities, and 5 large-scale demographics of timber production termed states. Data regarding malaria incidence was obtained from the System of Epidemiologic Surveillance of Malaria (SIVEP-Malaria). SIVEP-Malaria is a monitoring system implemented in Brazil where malaria cases are reported to the public health administration and translated into a value of Annual Parasite Incidence...

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