Chapter 2: Ecology

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kamalvirpablay
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308698
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Chapter 2: Ecology
Updated:
2015-10-08 14:55:00
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ecology
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My flashcards for science class, unit Ecology
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  1. Population
    All the individuals of a species that occupy a particular geographic area

    Eg. Brown bears, humans
  2. Exponential Growth
    Accelerating growth that produces a J-Shaped curve when the population is graphed against time

    Eg. The growth of elephants
  3. Limiting Factors
    A factor that limits the growth, distribution, or amount of a population in an ecosystem

    Example: the limiting factors of a human include, food, clean water, and habitable land
  4. Carrying Capacity
    The size of a population that can be supported indefinitely by the available resources and services of an ecosystem
  5. Ecological Niche
    The way that an organism occupies a position in an ecosystem, including all the necessary biotic and abiotic factors

    Eg. The brown bat has its ecological niche
  6. Predator
    An organism that kills and consumes other organisms

    Example: Lynx consume snow-hares as the hares are prey to the Lynx
  7. Prey
    An organism that is eaten as food by a predator

    Example: Snow hares are prey to their predator Lynx
  8. Mutualism
    A symbiotic relationship between two species in which both species benefit from the relationship

    Example: The relationship between crocodiles and baby turtles
  9. Parasite
    An organism whose niche is dependent on a close association with a larger host organism

    Example, Brainworms and deer/moose
  10. 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
  11. Doubling Time
    The period of time that is required for a population to double in size
  12. Competition
    Competition occurs when two or more organisms compete for the same resource

    Example: Food, habitable land
  13. Ecological Footprint
    A measure of the productive land and water that are needed to support an individual's standard of living forever
  14. Unsustainable
    A pattern of activity that leads to a decline in the function of an ecosystem

    Example: 

    Water supply = 10L

    Daily use --> 500ml

    How long the water supply would therefore last is equal to 20 days
  15. Sustainability
    Use of Earth's resources, including land and water, at levels that can continue forever

    Example: Energy from windmills are a sustainable source of energy because there is essentially, infinite wind
  16. Ecosystem Services
    The benefits experienced by organism, including humans, that are provided by sustainable ecosystems

    Example: Trees produce oxygen
  17. Desertification
    The transformation from non-desert land to desert land

    Can result from climate change, erosion and drought
  18. Ecotourism
    A nature-friendly profitable form of tourism where activities are created in sustainable ecosystems

    Example: Niagra Falls

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