Types of lake
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The document discusses different types of lakes categorized based on their nutrient levels and source. There are three main types: oligotrophic lakes which have very low nutrient levels and clear water; mesotrophic lakes which have moderate nutrient levels; and eutrophic lakes which have high nutrient levels and murky water. Other lake types include tectonic, volcanic, glacier, salty, artificial, oxbow, and meromictic lakes which have specific geological or environmental characteristics.
Types of lake
- 1. Types of lake Presented by Ahmad Ali P.hD scholar P.U chandigarh
- 2. Lake A depression on the surface of the earth, where water gets collected . known as a lake.
- 3. Where does each lake type fall on the line? Low nutrients Very high nutrients
- 4. Lake types On the basis of its tropic status Trophy = nutrient (phosphorus and nitrogen ) 1.Oligotrophic. 2.Mesotrophic. 3.Eutrophic.
- 5. low nutrients (P&N) Clear water Often steep sided and deep Usually replenished by snow, glacier melt Examples: Lake Tahoe, Crater Lake Oligotrophic lakes
- 6. Mesotrophic lakes Meso = middle or mid Great fishing lakes Stratification
- 7. Eutrophic lakes High nutrient levels Murky, green water Usually shallow. Usually replenished by rivers/streams
- 9. Cultural Eutrophication We artificially cause lakes to become eutrophic by Runoff Pollutants Thermal pollution Lakes become hypereutrophic
- 10. Other lake types
- 11. Tectonic lakes Ex. Lake Baikal
- 12. Volcanic lakeVolcanic lake Associated with volcanic activity Form when the shut off volcano will be filled with water Associated with volcanic activity Form when the shut off volcano will be filled with water
- 13. Glacier LakesGlacier Lakes Formed when the surface is scoured, deepened and widened by the glacier. And the surface will be filled by glacier melt water Formed when the surface is scoured, deepened and widened by the glacier. And the surface will be filled by glacier melt water
- 14. Salty LakesSalty Lakes Cause by the limited supply of freshwater Tendency to concentrate the water with minerals Cause by the limited supply of freshwater Tendency to concentrate the water with minerals
- 15. Artificial LakesArtificial Lakes Manmade lakes For water reservoirs, electricity generation, etc. Manmade lakes For water reservoirs, electricity generation, etc.
- 16. Oxbow lake
- 17. Meromictic lake Layer of water which don't intermix
- 18. Rift valley lake
- 19. Thank you