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biogeochemical cycle

biogeochemical cycle



this presentation is all about the biogeochemical cycle. but sadly, i only include the Water Cycle and Carbon cycle because I were assign to present this in front of my classmates. ...

this presentation is all about the biogeochemical cycle. but sadly, i only include the Water Cycle and Carbon cycle because I were assign to present this in front of my classmates.

I hope I can help you all regarding this topic. that's all thank you . Like. Comment and Share tHanks. ! Godbless y'll. :)



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    biogeochemical cycle biogeochemical cycle Presentation Transcript

    • B i o G e o C h e m i c a l C y c l e ECOWLEC Juvena May Alegre
      • The elements and compounds that sustain us are cycled endlessly through living things and through the environment.
      • when human activity alters flow rates or storage times in these natural cycles, overwhelming the environment’s ability to process them, these materials can become pollutants .
      • on the global scale Biogeochemical cycling is the transport and transformation of substances in the environment, through life , air , sea , land , and ice .
      • these global cycles include the circulation of certain elements, or nutrients, upon which life and the earth’s climate depend.
    • Hydrologic cycle ECOWLEC Juvena May Alegre
    • Water
      • Very important
    • How come we never run out of water? ECOWLEC Juvena May Alegre
    • After four and a half million years you’d think the water would be all used up! It’s not , though, because of one special process: the hydrologic cycle , more commonly called “the Water Cycle.” ECOWLEC Juvena May Alegre
    • The Hydrological Cycle (also known as the water cycle) is the journey, water takes as it circulates from air , the land , subsurface waters, and organism to the sky, and back again.  ECOWLEC Juvena May Alegre
      • The multiple cycle that makes up the Earth’s water cycle involve:
        • Four main physical actions :
          • Evaporation
          • Precipitation
          • Infiltration
          • Runoff
          • Subsurface flow
      ECOWLEC Juvena May Alegre
      • E vaporation
        • Transfer of water from bodies of surface water into the atmosphere
      ECOWLEC Juvena May Alegre
      • Precipitation
        • Atmospheric moisture that has previously condensed to form clouds.
      ECOWLEC Juvena May Alegre
      • InFiltration
        • transition from the surface water to groundwater.
      ECOWLEC Juvena May Alegre
      • Run-Off
        • variety of ways by which land surface water moves down slope to the oceans..
      ECOWLEC Juvena May Alegre
      • Subsurface Flow
        • movement of water within the earth, or within aquifers.
      ECOWLEC Juvena May Alegre
    • Carbon Cycle
      • Serves as dual Purpose for Organism:
        • Structural component of organic molecules
        • Chemical bonds in carbon compound provided metabolic energy.
      ECOWLEC Juvena May Alegre
    • Carbon Cycle
      • Begins with photosynthetic organism taking up CO 2 because carbon is changed from gaseous CO 2 to less mobile organic molecules.
      ECOWLEC Juvena May Alegre
    • Carbon Cycle ECOWLEC Juvena May Alegre
      • The movement of carbon, in its many forms, between the biosphere, atmosphere, oceans and geosphere.
      • Plants obtain carbon dioxide from the air, through photosynthesis incorporate carbon into their tissues.
      • Producers and consumers – transform part of the carbon in their food back into Co2 via respiration.
      • Decomposers- release the carbon tied up in dead plants and animals into the atmosphere
      • Another major exchange of carbon dioxide occurs between Oceans and atmosphere
      • The dissolve co2 in the oceans is used by marine biota in photosynthesis
      • 2 other important processes
        • Fossil fuel burning
        • Changing land use
      • Fossil Fuel Burning , coal, oil, natural gas, and Gasoline are consumed by industry, power plants and automobiles.
      • Changing land use is a broad term which encompasses a host of essentially human activities, including agriculture, deforestation, and reforestation.
      • The global carbon cycle is out of balance, making rapid global climate change.
      • Co2 forms when the carbon in biomass oxidizes as it burns or decays
      • Many biological processes in motion by people release carbon dioxide
      • Burning fossil fuels
      • Slash-and burn agriculture
      • Clearing land for permanent pasture, cropland, human settlements.
      • 4. Accidental and intentional forest burning
      • 5. Unsustainable logging and fuel wood collection
      • Clearing vegetation cover from a forested hectare release much of the carbon lodged in the soil.
      • The annual movement of carbon, the carbon exchanges bet. Reservoirs, occur because of various chemical, physical, geological and biological processes.
      • The Ocean contains the largest pool of carbon near the surface of the earth
    • Global Carbon Budget
      • Is the Balance of the exchanges of carbon between the carbon reservoirs or between a specific loop of the cycle
      ECOWLEC Juvena May Alegre
    • B y e!! T ha nk y Ou  ECOWLEC Juvena May Alegre