Biodiversity in the ecosystem

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Biodiversity in the ecosystem

  1. 1. Biodiversity in the Ecosystem Presented by: Arnel O. Rivera LPU - Cavite
  2. 2. Review: <ul><li>Ecological Niche refers to the set of conditions in the environment in which a species is able to survive and maintain stable population sizes. </li></ul><ul><li>Ecological Niche is divided into two: fundamental (environmental) and realized (environmental and ecological). </li></ul><ul><li>Functional traits refers to certain characteristics of species which enables them to survive. </li></ul>
  3. 3. Review: <ul><li>Habitat refers to the environment over which a species is known to occur and the type of community that is formed as a result. </li></ul><ul><li>Population refers to individuals of the same species that live, interact and migrate through the same niche and habitat. </li></ul>
  4. 4. Food Chains <ul><li>One of the main features of the ecosystem is biodiversity. Members are usually classified into: </li></ul><ul><ul><li>Producers – those who can synthesize the organic materials they need from inorganic materials in the environment. </li></ul></ul><ul><ul><li>Consumers – those that are unable to manufacture their own food directly and depend upon producers to meet their needs. </li></ul></ul><ul><ul><ul><li>Herbivores </li></ul></ul></ul><ul><ul><ul><li>Carnivores </li></ul></ul></ul><ul><ul><ul><li>Omnivores </li></ul></ul></ul>
  5. 6. Food Chains <ul><li>Abstract representation of feeding relationships within a community. </li></ul><ul><li>The sequence in which energy and nutrients are transferred. </li></ul>
  6. 7. FOOD WEB Red Arrows = Energy!
  7. 8. Equilibrium <ul><li>Cyclical changes in populations can sometimes result in large fluctuations in the number of a species, but because of the interdependence of all the components, any changes in one part of its nature will result in a reaction in other parts of the community. These reactions work to restore the equilibrium or balance of nature . </li></ul>
  8. 10. Ecological Succession <ul><li>The overall change or disruption in the system’s balance is altered irreversibly and the result is the replacement of one type of ecosystem to another. </li></ul>
  9. 11. Carrying Capacity <ul><li>Refers to the maximum number of organisms that can be supported by a particular environment. </li></ul><ul><li>If the carrying capacity of an ecosystem is exceeded by overpopulation, there will be insufficient resources and one or more species will decline until an equilibrium (balance of nature) is restored. </li></ul>
  10. 12. Gala hypothesis <ul><li>The concept that the Earth as a single organism. </li></ul><ul><li>Formulated by James Lovelock, a British scientist working for NASA. </li></ul><ul><li>Named after the Greek goddess of the earth. </li></ul><ul><li>The planet is a self-regulating system in which all the individual elements coexist in a symbiotic relationship. </li></ul>
  11. 13. Human Threat <ul><li>Human interference in the Earth’s natural systems has become a major threat damaging the planet’s ecosystem. </li></ul><ul><li>The damage affected by humans was posing a threat to the viability of the planet itself. </li></ul><ul><li>The effects of this disruption are now becoming apparent in the changing climates and landscapes of almost every region of the planet. </li></ul>
  12. 14. To download this file, go to: http://www.slideshare.net/ArnelLPU Thank Y u!

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