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Eutrophication

Eutrophication. To Much Nutrients!. Definition & Types. Eutrophication = Increase in algal bloom as a reaction to increased levels of nutrients in a body of water Eutrophication : “Ecosystem response to the addition of artificial or natural substances to an aquatic environment ” Types :

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Eutrophication

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  1. Eutrophication To Much Nutrients!

  2. Definition & Types • Eutrophication = Increase in algal bloom as a reaction to increased levels of nutrients in a body of water • Eutrophication : • “Ecosystem response to the addition of artificial or natural substances to an aquatic environment ” • Types : • Natural – natural increase in nutrients to body of water • Cultural – increase in nutrients to body of water due to unnatural causes

  3. Location • Gulf of Mexico • Black Sea • Baltic Sea • Chesapeake Bay • Long Island

  4. Pollution Causes • Fertilizer runoff • Farms, golf courses, or treated lawns. • Sewage contaminate • Unbalanced food web

  5. Environmental Consequences • Kill off marine populations • Disrupt natural order (food webs) • Promotes invading species • Decreased biodiversity • Toxicity

  6. Conservation Efforts • Introducing shellfish to body of water • Plant trees to hold solid soil • Farmers keep soil in fields and out of waterways • Protect groundwater resources • Teach the values of conservation in school

  7. Costs • 4.3 billion dollars a year spent on water clean up in U.S. • 44 million a year spent on prevention of nutrient pollution • Tiete river cleanup (4 billion dollars over 10 years) Brazil • England – 150 million spent a year • Dramatic decline in real estate (lake front property)

  8. Applicable Legislation • Surface Water Standards Act • Prevents bodies of water from become heavily polluted • Clean Water Act • Eliminating release of toxic substances into water • Prevention Policy • Regulates discharge of sewage into ecosystems • Shore Protection Act • Prevents transportation of waste over shorelines • Cleanup Enforcement Act • Requires parties responsible for damage to fund clean up

  9. Extra Facts • Estimated $17 million more per year spent on cleanup • (1990) 48% of North America’s freshwaters were effected by eutrophication • (1990) 54% of Asia’s freshwaters were effected by eutrophication • (1990) 53 % of Europe’s freshwaters were effected by eutrophication • (1990) 41 % of South America’s freshwaters were effected by eutrophication

  10. Literature Cited http://www.youtube.com/watch?v=UGqZsSuG7ao • Holt Environmental Science Textbook • http://en.wikipedia.org/wiki/Eutrophication • http://toxics.usgs.gov/definitions/eutrophication.html • http://www.nature.com/scitable/knowledge/library/eutrophication-causes-consequences-and-controls-in-aquatic-102364466 • http://www.sciencedaily.com/articles/e/eutrophication.htm

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