英语六级听力练习：标准4.5(3)_大学英语听力

英语六级听力练习：标准4.5(3)

　　Governments, for example, very often see fencing as a potential solution to addressing human-wildlife conflict. Its seen as a solution that appears more straightforward than it is in practice. Once you put a fence up, then you have to maintain it. And if you dont maintain it, you can end up with a situation where wildlife conflict could actually be higher than it was before.

　　Often, Durant said, local communities will actually breach such fences.

　　Very marginalized communities that have problems meeting their own household needs in terms of food and nutrition very often they will want to breach the fences to gain access to the wildlife. And also fence wire can be used to build snares and that can actually exacerbate a snaring problem.

　　She said many communities have developed strategies over the years to deal with marauding animals, such as elephants. Coping skills they might lose if fences are built around their communities, and then the fences are breached by one or more elephants. Whats more, fences can build resentment in communities against conservation efforts.

　　Besides that, the wildlife researcher said fences can affect predator-prey dynamics.

　　When you look at some of the densities of lions in fenced reserves what you find is that theyre actually kept at levels much higher than what the areas would be expected to support. So that suggests that its actually altering the predator-prey dynamics. And lions arent the only predators in ecosystems. Youve also got other predators such as spotted hyenas, wild dogs, she said.