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    Ecosystem

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    borkarrajvardhan2

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    Ecosystem

    Uploaded by

    borkarrajvardhan2
    9 views13 pages

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    Ecosystem Ppt

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    Copyright:

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    Download as pptx, pdf, or txt
    9 views13 pages

    Ecosystem

    Uploaded by

    borkarrajvardhan2

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    You are on page 1of 13

    ECOSYSTEM

    Content

    – What Is An Ecosystem
    – Types
    – Component
    – Functions of an ecosystem
    – Conservation of forest
    – The Ten Global Threats to Ecosystem
    Viability
    – References
    ECOSYSTEM

    – The self-sustaining structural and functional


    interaction between living and non-living
    components.
    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.
    Types Of Ecosystem

     Natural
    1.Terrestrial ecosystems (grasslands, forests,
    desert ecosystems)
    2.Aquatic ecosystem
    a. Lentic (Stagnant water) like lake, ponds
    b. Lotic (Flowing water) like river, ocean.
     Artificial
    1.A crop land, garden, aquarium, park, kitchen
    garden.
    Components

     Abiotic or Non-living components.


    – 1. Inorganic substances
    – 2. Organic compounds
    – 3. Climatic factors
     Biotic or Living components.
    – 1. Autotrophs or Producers
    – 2. Heterotrophs or Consumers
    – 3. Decomposers or Saprotrophs
    FUNCTIONS OF AN
    ECOSYSTEM
    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.
    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.
    PROCESS OF FUNCTIONING
    OF THE ECOSYSTEM

    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.
    ENERGY FLOW THROUGH
    THE ECOSYSTEM
    The transfer of energy and matter takes place in
    the process of predator and prey relationship in a
    food chain. The original source of energy is the
    energy from the sun.
    Out of the enormous amount of energy
    continuously radiated by the sun, most of it is
    reflected or refracted back (by atmosphere, earth
    surface and object like plants). Only a very small
    fraction, about one per cent, of the solar energy
    received by the plant is used through the process
    of photosynthesis.
    Conservation of forest

    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.
    Creating Awareness

    Awareness about ecosystem conservation


    can be done by posters, competitions
    about ecosystem conservation, arranging
    T.V. programmes and websites related to
    ecosystems.
    The Ten Global Threats to
    Ecosystem Viability

    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
    Thanks

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