Wide rivers crossed : the South Platte and the Illinois of the American prairie /
In this book, the author tells the stories of two rivers - the South Platte on the western plains and the Illinois on the eastern - to represent the environmental history and historical transformation of major rivers across the American prairie. The author begins with the rivers' natural histor...
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| 在線閱讀: | Electronic book from EBSCO Electronic book from EBSCO |
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| 主要作者: | |
| 格式: | 電子書 |
| 語言: | English |
| 出版: | Boulder : University Press of Colorado, [2013] |
| 主題: |
| 總結: | In this book, the author tells the stories of two rivers - the South Platte on the western plains and the Illinois on the eastern - to represent the environmental history and historical transformation of major rivers across the American prairie. The author begins with the rivers' natural histories, including their geologic history, physical characteristics, ecological communities, and earliest human impacts, and follows a downstream and historical progression from the use of the rivers' resources by European immigrants through increasing population density of the twentieth century to the twenty-first century. During the past two centuries, these rivers changed dramatically, mostly due to human interaction. Crops replaced native vegetation; excess snowmelt and rainfall carried fertilizers and pesticides into streams; and levees, dams, and drainage altered distribution. These changes cascaded through networks, starting in small headwater tributaries, and reduced the ability of rivers to supply the clean water, fertile soil, and natural habitats they had provided for centuries. Understanding how these rivers, and rivers in general, function - and how these functions have been altered over time - will allow for innovative approaches to restoring river ecosystems. |
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| 實物描述: | 1 online resource (v, 344 pages) : illustrations |
| 參考書目: | Includes bibliographical references and index. |
| ISBN: | 9781607322313 1607322315 1457181282 9781457181283 |
| 訪問: | Access limited to authorized users. |