Science Unit 2 Glossary Terms

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  1. Ecological Niche
    • The way in which an organism occupies a position in an ecosystem, including all the necessary biotic and abiotic factors
    • eg. Bees gather nectar from flowers to make honey
  2. Predator
    A organism that kills and eats other animals

    eg. lynx eats snowshoe hare
  3. Prey
    A organism that gets eaten by a predator

    eg. snowshoe hare gets eaten by lynx
  4. Mutualism
    A symbiotic relationship between two species in which both species benefit from the relationship

    eg. the coral reef and the algae, the algae provides the coral reef 90% of its energy
  5. Parasite
    An organism whose niche is dependent on a close association with a larger host organism

    eg. the brain worm and the white-tailed deer
  6. Competition
    When two or more organisms compete for the same resource at the same location at the same time

    eg. if two eels compete for the same resource at the same time in the same place
  7. 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

    eg. use of water
  8. Doubling time
    The period of time that is required for a population to double time

    eg. the approximate time for Canada to double is 60 years
  9. 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
  10. Unsustainable
    A pattern of activity that leads to a decline in the function of an ecosystem

    eg. non renewable fossil fuels
  11. Sustainability
    Use of earths resources, including land and water, at levels that can continue forever

    eg. how we are using water right now
  12. Ecosystem services
    The benefits experienced by organisms, including humans, that are provided by sustainable ecosystem

    eg. trees produce a big eco system service for us, oxygen
  13. Desertification
    The change of non desert land into desert land, which may result from climate change or from unsustainable farming or water use

    eg. clearing a large forested area, so the climate gets hotter and drier, and the local precipitation level drops. This makes that area become a desert
  14. Ecotourism
    A form of tourism that sensitive to the health of an ecosystem and involves recreational activities provided by sustainable ecosystems

    eg. snowshoeing in the winter through forests or trails
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Science Unit 2 Glossary Terms
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