Ecology Unit 1 Chapter 3 Glossary Terms

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Ecology Unit 1 Chapter 3 Glossary Terms
2015-10-06 20:56:12
science ecology jordan
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  1. Biodiversity
    The number and variety of organisms in an ecosystem or area
  2. Protect
    • To legally prevent human intervention in an area or ecosystem
    • e.g. most national parks are protected
  3. Biodiversity hotspot
    • A place where biodiversity is especially high
    • e.g. tropical rainforests
  4. Community
    A group of populations within an ecosystem
  5. Dominant species
    • The species in a community with the highest biomass
    • e.g. kelp
  6. Keystone species
    • A species with low biomass but a large impact on the environment
    • e.g. otters
  7. Captive breeding
    Breeding a species in captivity to boost its wild population after releasing it
  8. Ecosystem engineer
    • A species which creates drastic changes to its environment
    • e.g. beavers
  9. Succession
    • A series of changes over time
    • e.g. if a habitat was destroyed and its species died, restoring it would eventually cause those species to return
  10. Habitat loss
    • When a species’ habitat is destroyed or rendered unlivable
    • e.g. wetland draining
  11. Deforestation
    • When a forest is cut and the trees are not replanted
    • e.g. many parts of the amazon rainforest are suffering from deforestation due to agriculture
  12. Alien species
    • A species which is introduced to an area which it is not native to
    • e.g. zebra mussels in the great lakes
  13. Invasive species
    • An alien species which is detrimental to its new environment
    • e.g. cane toads
  14. Overexploitation
    • When a resource is used until it is depleted
    • e.g. Atlantic Cod
  15. Extinction
    • When all members of a species are dead, the species is extinct
    • e.g. dinosaurs are extinct
  16. Biodiversity crisis
    Many species are currently facing extinction, causing a biodiversity crisis
  17. Restoration ecology
    • The process of repairing a destroyed or damaged habitat
    • e.g. reforestation
  18. Reforestation
    • Planting trees to restore a habitat
    • e.g. in the 1990’s, red pine forests were replanted to prevent species extinction
  19. Biocontrol
    • When one organism is imported to regulate another’s population. Fails more often than not
    • e.g. parasite flies and gypsy moths
  20. Bioremediation
    Using plants to extract heavy metals and toxins from the soil
  21. Bioaugmentation
    • Using plants to add essential nutrients back into the soil
    • e.g. planting clover to add nitrogen