MadSci Network: Zoology |
Good Question. I cannot imagine that very many of the people who are responsible for the killing of endangered species of the rain forest do so deliberately. Probably the worst culprit (with the longest-lasting impact) on these rare plants and animals is simple economic development. Much land is being cleared of trees and natural forest so that crop plants such as tobacco and coffee can be grown for profit, which feeds the local people working there. Logging (as well as the access roads that are cut into the land for this) changes the landscape, permits uncontrolled erosion of precious soil, and as the vegetation changes it affects all the organisms in that food web. Many species cannot change quickly enough to survive, and the endangered ones tend to be the first to go (which is really sad because biodiversity, or species variety, is one of the most important features to help an ecosystem survive). So habitat destruction is one of the main sources of extinction. {Which is a shame - for all we know the cure for some major disease lies in the roots of some plant in the rain forest. If we don't get a chance to study it's medicinal value before it all gets plowed under - we will never know what it could have done for humankind!} Furthermore, as a species becomes rare, it's value increases to wildlife collectors. Because they are now willing to pay more money, it is very hard for some poachers to resist this offer, and they will take the risk of hunting endangered animals. One of the best ways to combat both of these forces driving the killing of endangered rain forest species is to elevate the value of the ecosystem to the culprits doing the damage. Tourism (and tourist dollars) have been used somewhat successfully in some places, such as the rain forest in Rwanda, Africa. Unfortunately the main tourist attraction - the rare Mountain gorilla - may actually be susceptible to human diseases that are being accidentally transmitted by tourists! It's a tough decision all around, and it is important to put yourself in all individual's shoes. But awareness of the facts is the best defense for anyone. I highly recommend that you visit the nearest zoo and find out more, and perhaps ask what they are doing for the conservation of endangered species... Keep up the good work! Neala MacDonald Zoologist and Science Outreach Coordinator University of Western Ontario London, ON, Canada
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