Abstract

Abstract The world has changed substantially over the past 10,000 years, especially so over the last 70 years. Presently, more than half of the world’s former plant growth is thought to be on land we use for crops, grazing, or cities, and the combined mass of humans and their domestic animals outweighs that of wild mammals by a factor of 25. Many extinctions have already happened, and the possibility of a mass extinction on par with the last one 66 million years ago is very real. The consequences are potentially disastrous to humans. Threats to wild species are summarized by the acronym COPHID—Climate change, Overharvesting, Pollution, Habitat loss, Invasive species, Disease. These threats stem from human population growth and equally from the rise in personal wealth. The book considers the ecology of species in this altered world, the six threats, and the science behind species preservation.

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