Ecology Glossary Terms Chapter 2

  1. Population
    • - All the individuals of a species that occupy a particular geographic area at a certain time
    • - Increases when reproductive rates are greater than what is needed to be replaced
    • - must be able to successfully reproduce

    e.g A number of elephants, in this case 100 that live in the same area
  2. Exponential Growth
    • - Accelerating growth that produces a J-shaped curve when the population is graphed against time
    • - Happens when more resources are present than a population needs
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  3. Limiting Factors
    - Factors that limit the growth, distribution, or amount of a population in an ecosystem

    e.g resources like food and water, habitat
  4. Carrying Capacity
    - The size of a population that can be supported indefinitely by the available resources and services of an ecosystem

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  5. Ecological Niche
    - The way that an organism occupies a position in an ecosystem, including all the necessary biotic and abiotic factors

    e.g biotic niche= big brown bat and the insects it eats

    e.g abiotic niche= big brown bat and the space it needs (for example to roost)
  6. Predator
    - An organism that kills and consumes other organisms

    e.g a lion, it kills and eats other organisms such as zebras
  7. Prey
    - An organism that is eaten as food by a predator

    e.g a zebra, it is killed and eaten by lions
  8. Mutualism
    - A symbiotic relationship between two species in which both species benefit from the relationship

    e.g Photosyntheic algae and tropical reef-building corals
  9. Parasite
    - An organism whose niche is dependent on a close association with a larger host organism

    • e.g brainworm
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  10. Competiton
    - When two or more organisms compete for the same resource in the same location at the same time
  11. Sustainable use
    - Use that does not lead to long-term depletion of a resource or affect the diversity of the ecosystem from which the resource is obtained
  12. Doubling time
    - The period of time that is required for a population to double in size
  13. Ecological footprint
    • - A measure of the impact of an individual or a population on the environment in terms of energy consumption, land use, and waste production
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  14. Unsustainability
    - A pattern of activity that leads to a decline in the function of an ecosystem
  15. Sustainability
    - Use of Earth's resources, including land and water, at levels that can continue forever
  16. Ecosystem services
    - The benefits experienced by organisms, including humans, that are provided by sustainable ecosystems
  17. Destertification
    - The change of non-desert land into desert, which may result from climate change or from unsustainable farming or water use
  18. Ecotourism
    - A form of tourism that is sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems
Card Set
Ecology Glossary Terms Chapter 2
Chapter 2 of the Ecology Glossary Terms