Sci/256 Week 2 Essay

779 Words4 Pages
Yellow Stone National Park
Alejandro Otero
SCI/256- People, Science and the Environment
Ms. Nathalie Basma
July 30, 2013

Yellow Stone National Park
“The human history of the Yellowstone region goes back more than 11,000 years. From then until to the very recent past, many groups of Native Americans used the park as their homes, hunting grounds, and transportation routes. These traditional uses of Yellowstone lands continued until a little over 200 years ago when the first people of European descent found their way into the park. In 1872 a country that had not yet seen its first centennial, established Yellowstone as the first national park in the world. A new concept was born and with it a new way for people to preserve and protect
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“Restoring an ecologically complete ecosystem in Yellowstone requires the return of willows--and with them, beavers. There's a clear threshold for ecosystem recovery. Willow stands must be more than 6 feet tall, the scientists found. That height is important, says Marshall. Then willows are beyond the reach of browsing elk, and can serve as seed sources for new young willows. Once willows have returned, beavers will gnaw down a certain number of them to build dams. The dams will further slow stream flow, allowing yet more willows to grow. The results offer new insights on the role of wolf-driven trophic cascades in the Yellowstone ecosystem, says Hobbs. Trophic cascades like that in Yellowstone occur when predators--or the lack thereof--in an ecosystem change the abundance or alter traits of their prey, in turn affecting the next lower trophic level.” ("National Science Foundation", 2013)
Climate change will have a direct impact in the future of the park. Summer heat levels will become a norm that could be damaging to the Yellowstone environment. “All of natuires resources can be leveled with the astronomical amount of heat that will be produced based on climate change. the first evaluation of how climate change will affect the greater Yellowstone ecosystem, is a joint project of the Rocky Mountain Climate Organization, a nonprofit that advocates for carbon emission reductions by drawing attention to the likely consequences of climate change, and the Greater
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