Ecology - From Individuals To Ecosystems by Blackwell, 2005
Ecologists are concerned not only with communities, populations and organisms in nature, but also with manmade or humaninfluenced environments ( plantation forests, wheat fields, grain stores, nature reserves and so on ), and with the consequences of human influence on nature (pollution, overharvesting, global climate change). In fact, our influence is so pervasive that we would be hard pressed to find an environment that was totally unaffected by human activity. Environmental problems are now high on the political agenda and ecologists clearly have a central role to play: a sustainable future depends fundamentally on ecological understanding and our ability to predict or produce outcomes under different scenarios
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