Thursday, November 5, 2015

Current Human Impacts on the Ecosystem

Right now, nearly 40% of these protected grassland areas suffer from livestock grazing and fodder extraction. Grasslands of India are home to some of the most endangered species of animals.



Source: Value of Biodiversity and Ecosystem Services in South Asia and India
http://slideplayer.com/slide/6147886/


             Although this doesn’t directly show how humans are impacting the ecosystem, it clearly shows how grasslands have declined by almost 50%. The reason that this is so important to our topic of the Bengal Tiger is that this animal’s home is primarily the grasslands. So, the more depletion of the grasslands there is, the less land there is for the tiger to occupy. This would lead to a reduction of the tiger population.
            One of the biggest threats to tigers is humans. We impact the animal's habitat, making it unlivable. Human development forces these animals to live in small, isolated patches of habitat that aren’t the ideal conditions for the animal. Sooner or later the number of Bengal tigers will decline, as shown in the graph above. Essentially, just the presence of humans is hurting the tiger population. 
            Another way humans are negatively impacting the environment is by poaching. A dead tiger is worth around a total of $30,000. There are no effective laws in place to stop this act, so people continuously go after these tigers. Tiger parts are also extremely valuable. For instance, tiger claws can be used as sedatives for insomnia, and tiger teeth can be used to treat fevers. This is one huge reason as to why the Bengal Tiger population is declining.
           

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