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Effects of Land Use on the Biological Integrity of Streams

Effects of Land Use on the Biological Integrity of Streams. Michael A. Miller Wisconsin Department of Natural Resources Madison, WI. Watershed Concept.

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Effects of Land Use on the Biological Integrity of Streams

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  1. Effects of Land Use on the Biological Integrity of Streams Michael A. Miller Wisconsin Department of Natural Resources Madison, WI

  2. Watershed Concept • There is an intimate relationship between the land and water resources. How we manage land within a watershed strongly influences the quality of its aquatic resources.

  3. “The streams of the Midwest have undoubtedly changed much in character since the country has become so thickly settled. I have been informed that many streams, formerly deep and narrow, and abounding in pickerel, bass and catfishes, have grown wide and shallow, while the water in them varies greatly in different seasons, and they are inhabited by bullheads, suckers and a few minnows.” Seth Meek, 1892

  4. Determinants of the Biological Integrity of Streams Flow Regime Water Quality Biological Integrity Energy Relationships Habitat Structure

  5. Flow Regime • Water Volume • Temporal Distribution of Flow

  6. Water Quality • Temperature • Dissolved Oxygen Concentration • Turbidity • Organic and Inorganic Chemicals • Heavy Metals

  7. Habitat Structure • Streambed Form • Substrate Composition • Water Depth / Velocity • Habitat Diversity

  8. Energy Relationships • Type - Solar, Organic • Amount • Organic Source

  9. Clean Water is Not Enough! • Water Flow • Water Quality • Aquatic and Riparian Habitat • Food Chain

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