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Essay On Tropical Deforestation

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Effects of Tropical Deforestation on Parasitic Infection Rates Deforestation in the tropics has been an issue for a long time, with forests being wiped out and more trees logged down for the purpose exporting this wood and several agricultural practices (Kummer and Turner 1994). Many studies have been exploring the effect this would have on the patterns of malarial disease in tropical areas. Anopheles are prominent arthropod vectors that transmit malarial parasites. The vectorial capacities (efficiency of disease transmission) of the different species of this mosquito differ greatly, with Anopheles gambiae, which is found only in sub-Saharan Africa, having the highest efficiency (Gallup and Sachs 2001). An exacerbation of malarial infection rates and increase in Anopheline population happens as a result of deforestation and human settlement, because new microclimates that are more suitable for development emerge. For instance, the amount of A. darlingi in construction site areas in the Amazon has expanded since more breeding sites became available, such as the sand boxes utilized in such sites (Yasuoka and Levins 2007). The multiplication of malarial vectors in …show more content…

In a study that collected data on the effect of deforestation and other human activities on malarial epidemiology and vector abundance, it was found that in 24 cases of forest disturbance out of 60, Anopheline abundance declined where in 8 of these cases malarial occurrence also declined (Yasuoka and Levins 2007). In Thailand, the eradication of forest trees for the establishment of other economically valuable plantations (coffee and rubber) has led to an increase in the density of A. minimus which favors an open environment, and a decrease in A. dirus which on the other side prefers shaded areas (Taylor 1997). Hence, deforestation could lead to a decrease in malarial infection rates in certain

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