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The Effects of the Re-Introduction of Predators into an Eco-system.

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Introduction

Re-introduction of Predators What effect does the removal of a top predator have on an ecosystem? This could affect many factors unintentionally, due to the food chains affected. For example, when the wolves were removed from Yellowstone National Park in America, it caused many problems for other living things there. They were removed because they were a danger to humans. When they were removed, elk reproduced a lot and their population wasn't being controlled by wolves anymore. Too many elk meant the ancient forests were destroyed because the elk were eating all the trees. This also created a problem for beavers, as not much wood was available for them and therefore couldn't build dams in the rivers. ...read more.

Middle

With more wood available, the beavers made a return and built dams which helped the aquatic population. So overall the ecosystem was improved a lot. What are the other implications of re-introduction? Although the wolves' re-introduction would be considered a 'success', there are possible disadvantages to reintroducing predators. When wolves were re-introduced there was a 90% decline of coyotes, although this was only considered a small problem. Also, when the Florida Panthers were re-introduced into Florida, there was the danger of the panthers attacking humans. As they were reintroduced quite close to where humans lived, some were killing their goats. Another problem was inbreeding; only a small number of panthers were introduced, so some started to inbreed. ...read more.

Conclusion

I would consider the example when wolves were re-introduced to be a success because there were many advantages and the ecosystem was improved a lot. For the Panthers example, it's hard to determine, but I think it was still a success because now they can control the inbreeding problem by helping them get to other parts of the forest where more panthers should be. Although one was attacking goats, this can be controlled and the humans have to learn to live with the panthers being so close. I wouldn't consider it a success if the humans were being attacked or if the predators died out. If the predators just caused more problems then I wouldn't consider it to be a success. ?? ?? ?? ?? ...read more.

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