Glossary Terms Chapter 3

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Author:
daynanairn
ID:
174420
Filename:
Glossary Terms Chapter 3
Updated:
2012-10-04 21:20:53
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Sustainable ecosystems
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Science Chapter 3
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  1. What is Biodiversity
    The number and variety of organisms found in a specific habitat
  2. What is Protect
    To legally guard from harm a species that is listed as endangered, threatened, or of special concern
  3. What is a Biodiversity Hotspot
    • A place where there is an exceptionally large number of species in a relatively small area
    • i.e.- tropical areas
  4. What is a Community
    All the populations of the different species that interact in a specific area or ecosystem
  5. What is a Dominant Species
    • A species that is so abundant that it has the biggest biomass of any community mmembers
    • i.e - primary producers (needed in ecosystems)
  6. What is a Keystone Species
    • A species that can greatly affect population numbers and the health of an eecosystems.
    • i.e. - classic keystone species would be small preditors preventing herbivores eliminating plants.
  7. What is Captive Breeding
    • The breeding of rare or endangered wildlife in controlled settings to increase ppopulations
    • i.e. - seahorses are captive bred to increase population.
  8. What is an Ecosystem Engineer
    • A species that causes such a dramatic changes to landscapes that it creates a new eecosystems
    • i.e. - beavers (streams into aquatic ecosystems)
  9. What is Succession
    The series of changes in ecosystems that occurs over time following a disturbance
  10. What is Habitat Loss
    The destruction of habitats, which usually results from human activities
  11. What is Deforestation
    The practice of clearing forests for logging or other human uses, and never replanting them
  12. What is an Alien Species
    • A species that is accidentally or deliberately introduced to a new location, usually as a result of human activity
    • i.e. - zebra mussels
  13. What is an Invasive Species
    • A species that can take over the habitat of native species or invade their bodies
    • i.e. - kudzu (refer to picture below)
  14. What is Overexploitation 
    The use or extraction if resources until it is depleted
  15. What is Extinction
    The death of all individuals of a species
  16. What is a Biodiversity Crisis
    The current accelerated rate of extinctions on Earth
  17. What is Restoration Ecology
    The renewal of degraded or destroyed ecosystems through active human intervention 
  18. What is Reforestation
    The regrowth of a forest, either through the planting of seeds or trees in an area where a forest was cut down
  19. What is Biocontrol
    The use of a species to control the population growth or spread of an undesirable species
  20. What is Bioremediation
    The use of living organisms to clean up contaminated areas naturally.
  21. What is Bioaugmentation
    The use of organisms to add essential nutrients to depleted soils

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