Chapter #3; Glossary Terms

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facea1998
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175602
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Chapter #3; Glossary Terms
Updated:
2012-10-30 19:55:07
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science
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Chapter 3 Glossary Terms
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  1. Biodiversity
    The number and variety of organisms found in a specific region.
  2. Protect
    To legally guard from harm a species that is listed as endangered, threatened or of special concern.
  3. Biodiversity Hotspot
    A place where there is an exceptionally large number of species in a relativley small area. 
  4. Community
    A community is all the populations of the different species that interact in a specific area or ecosystem.
  5. Dominant Species
    A dominant species is a species that is so abundant that it has the biggest biomass of any community member. In terrestrial ecosystems, primary producers are always the dominant species.
  6. Keystone Species
    A keystone species is one that can greatly affect population numbers and the health of an ecosystem. Keystone species are not abundant and can be plants or animals.
  7. Captive Breeding
    Captive bredding is when animals are bred in captive, designed so that animals on the brink of extinction can be helped. 
  8. Ecosystem Engineer
    Ecosystems engineers are species that cause such dramatic changes to landscapes that they create a new ecosystem. 
  9. Succession
    Succession is a series of changes in an ecosystem that occurs over time, following a disturbance. 
  10. Habitat Loss
    Habitat loss occurs when events, due to natural diaster or humn activites, alter a terrestrial or aquatic ecosystem so much that many species can no longer survive there. 
  11. Deforestation
    Deforestation occurs when forests are logged or cleared for human use, and are never replaced. 
  12. Alien Species
    A species introduced to new parts of the biosphere from other regions. 
  13. Invasive Species
    An invasive species is an alien species that takes over the habitat of the native species. 
  14. Overexploitation
    The use or extraction of a resource until it is depend. For example, overfishing of Atlantic cod, overhunting of passenger pigeons. 
  15. Extinction
    The death of all the individuals of a species. It may happen naturally through background exticntion, caused by slow changes in ecosystems that affect species, or though mass extinction, which occurs much more quickly. 
  16.  Biodiversity Crisis
    The current accelerated rate of extinctions on Earth.
  17. Restoration Ecology
    The renewal of degraded or destroyed ecosystems through actuve human intervention. 
  18. Reforestation
    The regrowth of a forest, either through the planting of seeds or trees in an area where a forest was cut down.
  19. Biocontrol
    The use of a species to control the population growth or spread of an undesirable species.
  20. Bioremediation
    The use of living organisms to clean up contaminated areas naturally. 
  21. Bioaugrementation
    The use of organisms to add essential nutrients to depelted soils.

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