Science Ecology Chapter 2

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Science Ecology Chapter 2
2015-09-28 20:06:16
Science Terms
Chapter 2 glossary terms.
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  1. Population
    • - A group of organisms of one species that live in the same place at the same time
    • - (ex. Population of humans in a city)
  2. Exponential Growth
    • - Growth of a system that is proportionate to the amount already present
    • - Limiting factors restrict exponential growth
  3. Limiting Factors
    -Factors that limit the rate/results of any process.
  4. Carrying Capacity
    - The size of a population that can be supported indefinitely by the resources and conditions of a given ecosystem.
  5. Ecological Niche
    • - The place or function of a given organism within it's ecosystem
    • - Different organisms may compete for the same niche
  6. Predator
    • -An organism that exists by consuming other organisms.
    • -Usually is a predator to all things below it in the food chain
  7. Prey
    -An animal hunted/killed for food, especially by carnivorous animals.
  8. Mutualism
    -The symbiotic relation-ship between two species in which both species benefit from the relation-ship
  9. Parasite
    -An organism whose niche is dependant on a close association with a larger "host" organism.
  10. Competition
    • -Competition between two organisms for the same resource.
    • -Can limit population size.
    • -The more energy used for competition, the less is used for growth and reporduction.
  11. Sustainable Use
    -Use of a resource that does not lead to long-term depletion of said 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.
    • -(ex. The present doubling time for humans is 60 years)
  13. Ecological Footprint
    • -A measure of the impact of an individual or a population on the environment.
    • -Ex. (energy consumption, land use, and waste production)
  14. Unsustainability
    -A pattern of activity that leads to a decline in the function of an ecosystem.
  15. Sustainability
    -Use if 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. Desertification
    • -The change of non-desert land into a dessert.
    • -May result from climate change and unsustainable farming or water use.
  18. Ecotourism
    -tourism directed toward exotic, often threatened, natural environments, especially to support conservation efforts and observe wildlife.