logging in or signing up Eutrophication...ppt aSGuest131450 Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 943 Category: Science & Tech.. License: All Rights Reserved Like it (0) Dislike it (0) Added: April 04, 2012 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Eutrophication: Eutrophication Jignasha Bhutka 6 th Semester College R.E. & E.E. Sardarkrushinagar Dantiwada Agricultural UniversityWhat is Eutrophication?: What is Eutrophication? Excessive nutrients in a lake or other body of water, usually caused by runoff of nutrients (animal waste, fertilizers, sewage) from the land, which causes a dense growth of plant life; the decomposition of the plants depletes the supply of oxygen, leading to the death of animal life Depletion of oxygen in a nutrient-rich body of water by growth of too much plant life, leading to death of animal lifeEutrophication process: Eutrophication process Oligotrophic lake with a low level of nutrients.PowerPoint Presentation: Artificial input of nutrients from run-off and discharge of effluent.PowerPoint Presentation: Eutrophic lake with a high level of nutrients. Phosphorus is usually the bio-limiting element in freshwater lakes.PowerPoint Presentation: Rapid growth of algae and other biomass resulting in a decrease in the concentration of dissolved oxygen.PowerPoint Presentation: Turbidity (cloudiness) of water increases as does rate of sedimentation.PowerPoint Presentation: Increased growth of rooted plants such as reeds.PowerPoint Presentation: Algal blooms during the Summer months. Note that dissolved oxygen levels are at their lowest at night when plants respire rather than photosynthesis.PowerPoint Presentation: Development of anoxic conditions and release of noxious gases such as hydrogen sulphide , thioalcohols and ammonia.Effects: Effects The major impacts of eutrophication include changes in the structure and functioning of marine ecosystems and reduction of biodiversity. Bad taste and odor : some of the algal species that "bloom" produce toxins, water taste and odor deteriorates Oxygen depletion: penetration of light into the water is diminished. This occurs because the algae forms mats as a result of being produced faster than they are consumed. Diminished light penetration decreases the productivity of plants living in the deeper waters and hence their production of oxygen. DBP precursors : As the water becomes depleted in oxygen, the abundant algae and fish die and decompose, further oxygen is consumed by this process Under anoxic conditions iron, manganese, ammonia and phosphorous are released into the water column, anaerobic bacteria flourish, producing hydrogen sulfide You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.