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Principles of Ecology Ch. 13

Principles of Ecology Ch. 13. Ecology. ….the study of the interactions between organisms and the living and nonliving components of their environment. A Key Theme In Ecology. Interconnectedness or Interdependence

francesca-roberts
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Principles of Ecology Ch. 13

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  1. Principles of Ecology Ch. 13

  2. Ecology • ….the study of the interactions between organisms and the living and nonliving components of their environment.

  3. A Key Theme In Ecology • Interconnectedness or Interdependence • 5 levels of Ecological Organization are influenced by biotic and abiotic factors.

  4. Levels of Ecological Organization • Organisms-> Populations-> Community->Ecosystem-> Biome

  5. Levels of Ecological Organization

  6. Biotic and Abiotic Factors • Biotic: all living organisms • Abiotic: non-living factors such as temperature, humidity, pH, salinity, oxygen concentration, sunlight, nitrogen, and precipitation.

  7. Changes in the Environment

  8. Changing 1 factor in an ecosystem can affect Biodiversity. • Biodiversity: The variety of life in an ecosystem. • Keystone Species: A single species that effects the entire ecosystem The carnivorous starfish Pisaster ochracceus is a keystone species in the intertidal zones of the Pacific northwest

  9. BIOTIC or ABIOTIC? Marsh hen Palm tree Setting sun Bacteria Rocks Sand Marsh grass whelk Euglena 85 degrees tidewater

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