Local simple ecosystem ppt
- 2. Content What Is An Ecosystem Types Component Functions of an ecosystem Conservation of forest TheTen GlobalThreats to Ecosystem Viability References
- 3. The self-sustaining structural and functional interaction between living and non-living components. ECOSYSTEM
- 4. What Is An Ecosystem ➢An ecosystem is a natural unit consisting of all plants, animals and micro-organisms (biotic factors) in an area functioning together with all of the non-living physical (abiotic) factors of the environment.
- 5. ➢Natural 1.Terrestrial ecosystems (grasslands, forests, desert ecosystems) 2.Aquatic ecosystem a.Lentic (Stagnant water) like lake, ponds etc. b.Lotic (Flowing water) like river, ocean, sea, etc. Types
- 7. An ecosystem consists of two main components ➢Abiotic or Non-living components. 1. Inorganic substances 2. Organic compounds 3. Climatic factors Components
- 8. ➢Biotic or Living components. 1. Autotrophs or Producers 2. Heterotrophs or Consumers 3. Decomposers or Saprotrophs
- 9. 1. The Producers, the green plants, fix radiant energy(solar energy) and with the help of minerals take from their edaphic(soil where they grow) or aerial environment and build up complex organic matter. These are their food. So, with the help of solar energy they convert the chemical energy of the food to kinetic energy and finally heat energy. 2. The animals eat up plants and other animals as food. So, the energy is transferred through food to animals. 3. When plants and animals die, then decomposers(like certain bacteria and fungi) act on their dead bodies and decompose them into simple materials like carbon dioxide, water and minerals which go back to air, water bodies and soil from where they were taken. FUNCTIONS OF AN ECOSYSTEM
- 10. The carbon dioxide from air, water and minerals from water bodies and soil are again taken up by green plants along with solar energy to make their food. This process is repeated again and again. This leads to continuous functioning of the ecosystem. PROCESS OF FUNCTIONING OF THE ECOSYSTEM
- 11. Diversion of forest lands for other purposes have to be prevented. Reckless cutting of forests need to be checked. Steps have to be taken to stop shifting practice of cultivation. Forest fire is another cause of forest depletion which needs to be controlled effectively. Afforestation has to be taken up effectively. Conservation of forest
- 13. ➢Forests are important components of our environment. Rapid destruction of this important resource is a cause of concern. ➢ Afforestation, preventing reckless cutting of trees and making everyone aware of the need to conserve it will help forest conservation. ➢Nature enjoys ecological balance only if the relative number of species is not disturbed. So, conservation of wildlife is important for the future. ➢National parks, wildlife sanctuaries and biosphere reserves are established to protect and conserve wildlife. ➢Such measures would ensure that the wildlife does not become extinct. ➢Conservation of aquatic life would be ensured by removal of industries near water bodies.
- 14. Awareness about ecosystem conservation can be done by posters, competitions about ecosystem conservation, arranging T.V. programmes and websites related to ecosystems. Creating Awareness
- 15. If all mankind were to disappear, The world would regenerate back to the rich state of equilibrium That existed ten thousand years ago. If insects were to vanish, The environment would collapse into chaos. Edward O Wilson
- 16. 1) Loss of crop & grazing land 2) Depletion of world's tropical forests 3) Extinction of species 4) Rapid population growth 5) Shortage of fresh water resources 6) Over fishing, habitat destruction, & pollution in the marine environment. 7) Threats to human health 8) Climate change 9) Acid rain 10) Pressures on energy resources The Ten Global Threats to Ecosystem Viability
- 17. Reference www.google.com www.wikipedia.com www.studymafia.org www.pptplanet.com
- 18. Thanks