Ecology Chapter2 Glosary Terms - SNC1DW (Sem1)

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Ecology Chapter2 Glosary Terms - SNC1DW (Sem1)
2014-09-23 23:51:57
Ecology Chapter2 Glosary Terms SNC1DW Sem1

Chapter 2 Glossary Terms
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  1. Population
    A group of the same organism living in the same place at the same time
  2. Exponential Growth
    • An dramatic increase in population
    • Creates J-shape when graphed
  3. Limiting Factors
    • Factors that poorly affect a population, preventing its growth
    • E.g. Competition, Overly diverse ecosystem-unsustainable
  4. Carrying Capacity
    • The size of a population that an ecosystem can support indefinitely (no matter what) with the available resources and services
    • E.g. Earth's carrying capacity is believed to be under 10 billion
  5. Ecological Niche
    • The way in which an organism occupies a position in an ecosystem, including all the necessary abiotic and biotic factors
    • Changes for some organisms depending on competition
  6. Predator
    • Organism that kills and consumes other organisms
    • E.g. Lynx
  7. Prey
    • Organism that is eaten by predator as food
    • E.g. Rabbit
  8. Mutualism
    • A symbiotic relationship between two benefiting organisms
    • Algae, Coral
  9. Parasite
    • An organism whose niche is dependent on a close association with a larger host organism¬†
    • Usually at cost of host health
  10. Competition
    • When two or more organism compete for the same resource in the same place at the same time
    • E.g. Dandelions, grass
  11. Sustainable Use
    The use of a resource which can continue over a long period of time
  12. Doubling Time
    • The period of time it takes for a population to double¬†
    • Current doubling time for humans is 60 years
  13. Ecological Footprint
    • A measure of the impact of an individual or population on the environment
    • U.S.A. has the largest footprint
  14. Unsustainable
    Pattern of activity that leads to a decline in function of an ecosystem
  15. Sustainability
    Use of Earth's resources at levels that can continue forever
  16. Ecosystem Services
    • The benefits experienced by organisms, including humans, provided by sustainable ecosystems
    • E.g.Forest-provides habitat
  17. Desertification
    • The process of non-desert lands becoming deserts
    • Can happen because of climate change or if forest land is removed; happened for early settlers in Ontario
  18. Ecotourism
    • Tourism centered around the health of the ecosystem¬†
    • Involves recreational use
    • E.g. Coastal trip viewing aquatic wildlife