SNC1DW Chapter 3

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  1. Biodiversity
    The number and variety of life forms, including species, found within a specific region as well as all the number and variety of ecosystems within and beyond that region.

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  2. Protect
    To guard legally from harm a species that is listed as endangered, threatened, or of special concern.

    e.g. White Trilliums are protected in Ontario because it is the provincial flower.
  3. Biodiversity hotspot
    A place where there is an exceptionally large number of species in a relatively small area

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  4. Community
    All the populations of the different species that interact in a specific area or ecosystem.

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  5. Dominant species
    Species that are so abundant that they have the biggest biomass of any community number

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  6. Keystone species
    A species that can greatly affect population numbers and the health of an ecosystem.

    e.g. Sea Otters and Prarie Dogs
  7. Captive breeding
    The breeding of rare or endangered wildlife in controlled settings to increase the population size.

    e.g. Black-Footed Ferrets
  8. Ecosystem engineer
    A species that causes such dramatic changes to landscapes that it creates a new ecosystem

    e.g. Beavers and Desert Beetles (in Mexico)
  9. Succession
    The series of changes in an ecosystem that occurs over time, following a disturbance

    e.g. The area of a beaver pond changes from forest, to flooded forest, to a sunny pond.
  10. Habitat loss
    The destruction of habitats, which usually results from human activities

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  11. Deforestation
    The practice of clearing forests for logging or other human uses, and never replanting them

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  12. Alien species
    A series that is accidentally or deliberately introduced to a new location.

    e.g. Zebra Mussels and Round Gobies
  13. Invasive species
    A species that can take over the habitat of native species

    e.g. Round Gobies reproduce quickly and take up a large amount of space in a little amount of time
  14. Overexploitation
    The use or extraction of a resource until it is depleted

    e.g. Overfishing and overhunting can lead to major population declines
  15. Extinction
    The death of all the individuals of a species

    e.g. Dinosaurs and Dodo Birds are two famous extinct species
  16. Biodiversity crisis
    The current accelerated rate of extinctions

    e.g. some species of trees, amphibians, birds and mammals are at a risk of extinction
  17. Restoration ecology
    The renewal of degraded or destroyed ecosystems through active human intervention

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  18. Reforestation
    The regrowth of a forest, either through natural processes or through the planting of seeds or trees in an area where a forest was cut down

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  19. Biocontrol
    The use of a species to control the population growth or speed of an undesirable species

    e.g. The parasitoid was known to control the Gypsy Moth caterpillar population by laying its eggs inside it
  20. Bioremediation
    The use of living organisms to clean up contaminated areas naturally

    e.g. Certain plants have properties that collect poisons and store them in their tissues
  21. Bioaugmentation
    The use of organisms to add essential nutrients to depleted soils

    e.g. Clover can be used to replenish nitrogen levels in soil
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SNC1DW Chapter 3
2014-06-12 00:38:21
science biology ecology

Glossary terms and definitions for Chapter 3
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