Changes in Wisconsin Ecosystems and Environments Since the Last Ice Age

Описание к видео Changes in Wisconsin Ecosystems and Environments Since the Last Ice Age

UW-Madison geography professor Dr. Jack Williams paints a picture of the ecological upheaval of the North American landscape just after the retreat of the ice sheets 15,000 years ago. Recent research using fossil pollen, charcoal and dung fungus spores help us visualize a post-ice age terrain different from anything in the world today. The disappearance of mammoths, giant beavers, ground sloths and other large animals preceded a massive change in plant communities, providing new insight into the dynamics of extinction and its pervasive influence on a given landscape.

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