National Water-Quality Assessment (NAWQA) Project

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Effects of Urbanization on Stream Ecosystems

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What we measured


Changes in the landscape as a watershed urbanizes may cause changes in stream hydrology (flow), water temperature, physical habitat, and water chemistry that are known to have profound effects on aquatic communities of algae, invertebrate, and fish which represent organisms with different life spans. In this study, response variables were measured using consistent field and sampling protocols and lab analytical procedures at all sites so that the responses to urbanization can be compared among different metropolitan study areas.



Biological Communities

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