Ecology Chapter 3

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Ecology Chapter 3
2013-10-03 11:31:31

Ecology glossary terms for chapter 3
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  1. Biodiversity
    The variety of life in the world or in a particular habitat or ecosystem.

  2. Protect
    Aim to preserve (a threatened plant or animal species) by legislating against collecting or hunting.

    E.g. Moose are not allowed to be hunted in New York because their numbers are scarce.
  3. Biodiversity Hotspot
    A biogeographic region with a significant reservoir of biodiversity

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

  5. Dominant species
    A species that is so abundant that is has the biggest biomass of any community member

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

    e.g. Beavers, bees, sea otter, grizzly bear
  7. Captive Breeding
    The process of breeding animals in human controlled environments

    E.g. since the 1970s the Matschie's tree-kangaroo, an endangered species, has been bred in captivity
  8. Ecosystem Engineer
    Any organism that creates or modifies habitats

    E.g. Beavers
  9. Succession
    The series of changes in ecosystems that occurs over time following a disturbance.
  10. Habitat Loss
    The destruction of habitats, which usually which usually results from human activity

  11. Deforestation
    the practice of clearing forests for logging or other human uses and never replanting them.
  12. Alien Species
    a species that is accidentally or deliberately introduced to a new location usually a result of human activity

    E.g. zebra mussels
  13. Invasive Species
    A species that can take over the habitat of native species or invade their bodies

    Eg. Feral hogs in New York
  14. Overexplotation
    the used or extraction of a resource until it is depleted

    E.g. The hunting of dodo birds
  15. Extinction
    the death of all the individuals of a species

    E.g. passenger pigeons
  16. Biodiversity Crisis
    the current accelerated rate of extinction on earth
  17. Restoration Ecology
    the renewal of degraded or destroyed ecosystems through active human intervention
  18. Reforestation
    the regrowth of a forest either through 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. Bioremedation
    the use of living organisms to clean up contaminated areas naturally
  21. Bioaugmentation
    the use of organisms to add essential nutrients to depleted soils