Edt 535 pres

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Edt 535 pres

  1. 1. DissolvedOxygen
  2. 2. Why dowe care?
  3. 3. Because of me
  4. 4. Whatlevels area problem?
  5. 5. O2 Levels 12 mg/l or higher = DEATH (Bubble Disease)O2 Levels1-2 mg/l or lower =DEATH
  6. 6. by A E R A T I O N
  7. 7. What canincreasedissolvedoxygen?
  8. 8. absorbed by the air
  9. 9. produced by aquatic plants
  10. 10. But dontforget aboutwatertemperature.
  11. 11. O2inc s rease decreases O2
  12. 12. And withthat inmind....
  13. 13. What candecreasedissolvedoxygen?
  14. 14. lowered by algal blooms
  15. 15. How do humans effect dissolvedoxygen levels? ● Human activity is the leading cause of oxygen depletion. Such activities include – Building dams which reduce aeration – Dumping organic waste into waterways which increases phosphate and nitrate levels – Excessive use of fertilizer.For more information go to:http://peer.tamu.edu/curriculum_modules/Water_Quality/module_3/index.htm
  16. 16. Image CitationsSlide 1 – Bubbles.jpg by Fergus Ray Murray was used under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic License(http://www.flickr.com/photos/0olong/57148931/)Slide 2 – Care.jpg by Phoenix Dark-Knight was used under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic License(http://www.flickr.com/photos/chebbs/230238210/)Slide 3 – Fish.jpg by Rick Smit was used under a Creative Commons Attribution 2.0 Generic License (http://www.flickr.com/photos/ricksmit/15504803/lightbox/)Slide 4 – Level tripod?.jpg by jpstanley was used under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic License(http://www.flickr.com/photos/jpstanley/32107543/)Side 5 - 2-Way Traffic by J Heffner was used under a Creative Commons Attribution 2.0 Generic License (http://www.flickr.com/photos/civisi/2611679744/)Slide 6 – Hot air balloons.jpg by emmajc was Attribution-NonCommercial-NoDerivs 2.0 Generic License (http://www.flickr.com/photos/em/19152964/)Slide 7 – Lake Louise by Nate Eagleson is used under a Creative Commons Attribution 2.0 Generic License (http://www.flickr.com/photos/nateeag/4745229944/)Slide 8 – Bubble inside Elodea Flower by Luis Parravicini is used under a Creative Commons Attribution 2.0 Generic License (http://www.flickr.com/photos/xrm0/2136218364/)Slide 9 - Black and White Water Falls.jpg by Graham Dean is used under a Creative Commons Attribution-ShareAlike 2.0 Generic License (http://www.flickr.com/photos/britanglishman/3694225737/)Slide 10 - το θερμόμετρο : thermometer.jpg by Duncan Hull is used under a Creative Commons Attribution 2.0 Generic License(http://www.flickr.com/photos/dullhunk/5449178956/)Slide 11 – (top) Ice Water.jpg by D Sharon Pruitt was used under a Creative Commons Attribution 2.0 Generic License(http://www.flickr.com/photos/pinksherbet/5685106294/) (bottom) – Boil Water.jpg by Luigi Anzivino was used under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic License(http://www.flickr.com/photos/ilmungo/60154176/)Slide – 12 - Do you find my brain?.jpg by Daniela Hartmann under a Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Generic License(http://www.flickr.com/photos/29487767@N02/2845044715/)Slide – 13 – Drain.jpg by Neil R is used under a Creative Commons Attribution-NonCommercial 2.0 Generic License(http://www.flickr.com/photos/islespunkfan/2629078494/)Slide – 14 - Algae bloom in a small farm pond by Soil Science is used under a Creative Commons Attribution 2.0 Generic License(http://www.flickr.com/photos/soilscience/5084241721/)

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