Ecology Chapter 2

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Ecology Chapter 2
2015-09-26 10:43:58

Chapter 2 terms
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  1. Population
    a summation of all the organisms of the same group or species, which live in a particular geographical area
  2. exponential growth
    • huge growth in a graph where the line make a  j-shaped curve when population is graphed against time
  3. Limiting Factors
    • things that prevent a population from growing any larger
    • not enough food water shelter
  4. Carrying Capcity
    the number of people, other living organisms that a region can support without environmental degradation
  5. Ecological Niche
    the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces

  6. Predator
    an animal that naturally preys on others.

    cougar to deer
  7. Prey
    the organism which the predator eats

    fish to bear
  8. Mutualism
    the way two organisms of different species exist in a relationship in which each individual benefits from the activity of the other

    oxpecker and the rhinoceros or zebra
  9. Parasite
    an organism that lives in or on another organism and benefits by deriving nutrients at the host's expense.

    tapeworms, fleas, and barnacles
  10. Competition
    a contest between organisms, animals, individuals etc., for territory, a niche, or a location of resources and goods mates

  11. Sustainable Use
    use natural resources at a rate that the Earth can renew them
  12. Doubling Time
    the period of time required for a quantity to double in size or value
  13. Ecological Footprint
    a measure of human demand on the Earth's ecosystems

  14. Unsustainable
    upsetting the ecological balance by depleting natural resources

    • fossil fuels 
    • wood
  15. Sustainability
    an ability or capacity of something to be maintained or to sustain itself.
  16. Ecosystem Services
    Ecosystem services are the benefits experienced by organisms, including humans, that are provided by sustainable ecosystems

    Ecosystems  services include: the provision of clean food and clean water, the cycling of nutrients, the conversion of atmospheric carbon into biomass (which influences climate and weather)
  17. Desertification
    the turning of a non-desert area into a desert due to change of climate or from unsustainable farming due to lack of water
  18. Ecotourism
    a form of tourism that harms the ecosystem and involves recreational activities that depend on the earth's sustainable ecosystem