Ecology chapter 3

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Author:
andrew_johnstone
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238434
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Ecology chapter 3
Updated:
2013-10-03 11:30:06
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Ecology chapter
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Glossary terms for chapter 3
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  1. Biodiversity
    • The measure of the different species in an ecosystem
    • Eg. More biodiversity in the rainforest than in the arctic
  2. Protect
    • To keep from going extinct
    • Usually refers to species that are endangered
  3. Biodiversity hotspot
    • An area with a large amount of biodiversity
    • Eg. The rainforest in South America
  4. Community
    • A group of species that interact with each other within an ecosystem
    • Includes competitors, predators and symbiotic relations
  5. Dominant species
    • The species that has the largest biomass in an ecosystem
    • Major trouble if they are destroyed
  6. Keystone species
    • A species with a vital role in an ecosystem
    • Usually has smaller population
    • Eg. Otters
  7. Captive breeding
    • The breeding of animals in captivity
    • Usually to increase low populations of certain species
    • Eg. California condor
  8. Ecosystem engineer
    • A species that changes an ecosystem to such an extent that it creates a new ecosystem
    • Eg. Beaver
  9. Succession
    • The change of an ecosystem over a shortish period of time.
    • Eg. Beaver ponds
  10. Habitat loss
    • The loss of a population's habitat
    • Usually due to humans
  11. Deforestation
    • The cutting down of forests by humans
    • Usually for logging, always refer to its effect on wildlife
  12. Alien species
    • Species not normally found in a certain area that have been found there
    • Usually put there by humans for various reasons
  13. invasive species
    • Alien species that cause harm to the ecosystem they are introduced to.
    • Eg. Zebra mussels, humans (it's true!)
  14. Overexploitation
    • The overuse of a particular resource
    • Usually by humans
    • eg. atlantic cod
  15. extintion
    • the total annihilation of a species
    • eg. the dodo
  16. biodiversity crisis
    • the term used to describe the current problem of extreme rates of extinction
    • caused by humans
  17. restoration ecology
    • the science of returning an ecosystem to its original form
    • eg. cleaning oil spills
  18. reforestation
    • the planting of trees to replace logged ones
    • done by humans
  19. biocontrol
    • use of one species to destroy an invasive species
    • eg. bringing ferrets in to take care of mice
  20. bioremediation
    • the use of organisms to change an ecosystem to its original form
    • eg. bacteria at oil spills
  21. bioaugmentation
    the use of organisms to replenish an ecosystem's nutrients

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