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More than half of all accessible freshwater has been appropriated for human use, and a substantial portion of terrestrial ecosystems have been transformed by human action. These impacts are heaviest

More than half of all accessible freshwater has been appropriated for human use, and a substantial portion of terrestrial ecosystems have been transformed by human action. These impacts are heaviest in urban ecosystems, where impervious surfaces increase runoff, water delivery and stormflows are managed heavily, and there are substantial anthropogenic sources of nitrogen (N). Urbanization also frequently results in creation of intentional novel ecosystems. These "designed" ecosystems are fashioned to fulfill particular needs of the residents, or ecosystem services.

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    Date Created
    • 2010
    Resource Type
  • Text
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    Note
    • Partial requirement for: Ph.D., Arizona State University, 2010
      Note type
      thesis
    • Includes bibliographical references
      Note type
      bibliography
    • Field of study: Biology

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    by Elisabeth Knight Larson

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