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MSU ISB 201 - classification of freshwater

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ISB 201 1st Edition Lecture 14Outline of Last Lecture I. Water II. How do we provide and supply water?Outline of Current Lecture III. WatershedIV. Water diversion V. Classification of freshwaterCurrent LectureIII. Watershed- common area of land where all the surface and ground water collects, or drains, into the same place; drainage basinA. All shapes and sizesB. Cross country, state, and national boundaries make it difficult to come to an agreementC. 2,110 in US1. Elevation in land around you for water to flow in same direction2. Red cedar river grand river lake Michigan Atlantic ocean D. Management1. Upstream activities impact water quality downstream2. Requires cooperation across political boundariesIV. water diversion- water that is redirected or displaced from a lake, river or watershedA. Chicago River1. As population increased in 1900s sewage from Chicago River flowed into LakeMichigan contaminating the fresh water2. Solution: reverse the flow of water away from Lake Michigan 3. This is not a natural solution and had adverse effects including the water levelof lake Michigan decreasing B. Why is the Rio Grande Drying up?1. Irrigation from farming increasing 2. Factories surrounding the region increasing3. Increased population4. Prolonged drought in the area These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.5. Solutions: move factories; build canals to divert water; stop population growth VI. Classification of fresh water- based on the levels of nutrients in the water from low to high concentration A. Oligotrophic : low nutrient 1. Clear blue water2. Less sediment, deeper3. Pine trees4. Water colder and less decomposition B. Eutrophic: high (extra) nutrient1. Sediment buildup2. Shallow3. Trees drop more leaves4. Plants dominate shoreline 5. Murky water6. Algae and aquatic vegetation C. Eutrophication- adding nutrients to a water body; too much nutrients can cause overgrowth of plants or algae D. Cultural eutrophication- process becoming more nutrient rich due to human activities 1. Red Cedar River; feces in the river, feeding ducks, doing laundry2. Point source- large industry pollution identified from one source3. Non-point source- accumulation of all impacts polluting water


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