Levels of Organization (ecology)

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Levels of Organization (ecology) or the Levels of Environmental Organization are the five known levels of environmental classification.

The smallest level is the individual organism. Next is a population, followed by a community, then an ecosystem, and finally the biosphere. Larger or smaller organizations may be added in the future.

  • Organism refers to a single organism, this level can include any living organism from a plant to an animal
  • Population refers to a group of organisms living in an area from the same species
  • Community refers to groups of organisms from different species living in the same area interacting with each other
  • Ecosytem refers to groups of organisms from different species living in the same area interacting with each other
  • Biosphere is the largest level in ecology, this level includes all ecosystems on Earth
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