Ecology Chapter 1

  1. Ecosystem:
    All interacting parts of a biological community and that community's environment.
  2. Sustainable Ecosystem:
    An ecosystem that is capable of withstanding pressure and giving support to multiple organisms.
  3. Biotic:
    All of the living or recently living parts of the ecosystem.
  4. Abiotic:
    The non living parts of an ecosystem that organisms need to survive.
  5. Lithosphere:
    The hard part of the Earth's surface including rock and soil.
  6. Hydrosphere:
    The liquid part of the Earth's surface including; salt water oceans, fresh water lakes, and rivers.
  7. Atmosphere:
    Layer of gases above Earth's surface includes air.
  8. Biosphere
    The living part of the Earth's surface; not separate from the other abiotic spheres: includes life in water, air, and soil.
  9. Nutrients:
    These are chemicals that are needed by living organisms to survive.
  10. Eutrophication
    This is the process of adding nitrogen or phosphorus to an ecosystem that pushes it beyond the normal nutrient cycle and beyond sustainability.
  11. Photosynthesis
    This is the conversion of solar energy to chemical energy to be used as "food".
  12. Trophic Levels
    Categories of organisms defined by how the organism gains energy.
  13. Biomass:
    The total mass of living organisms in a defined group or area.
  14. Trophic Efficiency:
    A measure of the amount of energy or biomass that is transferred from one trophic level to the next.
  15. Bioaccumulation:
    A process in which materials, especially toxins, are ingested by an organism at a rate greater than they are eliminated.
  16. Biomagnification:
    This is the increase in the concentration of a toxin as it moves from one trophic level to the next.
  17. Cellular Respiration:
    A process that releases energy from organic molecules in the presence of oxygen. Carbohydrates mostly. Used by most living organisms and is essential to life.
  18. Fermentation:
    This is a process that releases energy from organic molecules in the lack of oxygen. Organisms such as bacteria and some fungi use fermentation to release the energy in glucose.
  19. Greenhouse Gases:
    These are atmospheric gases that prevent heat from leaving the atmosphere, thus increasing the temperature of the atmosphere.
  20. Greenhouse Effect:
    The warming of earth as a result of greenhouse gases, which trap some of the energy that would otherwise leave the earth.
  21. Acid Precipitation:
    Rain, snow,or fog that is unnaturally acidic due to gases in the atmosphere that react with water to form acids.
Card Set
Ecology Chapter 1
Chapter 1 glossary terms