Lesson 1 Abiotic and Biotic Factors in Ecosystems

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Lesson 1Abiotic and Biotic Factors in Ecosystems
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Ecosystems

• An ecosystem is made up of all the organisms in
  an area and their relationships with each other
  and with the non-living parts of their
  environment.

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Biotic Factors

• The living components of an ecosystem are called
  biotic factors.

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Examples of Biotic Factors

• Animals
• Plants
• Fungi
• Bacteria
• Protists

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Abiotic Factors

• The non-living components of an ecosystem are
  called abiotic factors.

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Examples of Abiotic Factors

• Temperature
• Soil and rocks
• Water
• Carbon
• Nitrogen

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Limiting Factors

• Anything that limits the number of individuals
  that can live in ecosystem is a limiting factor.

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Examples of Limiting Factors

• Food
• Water
• Climate
• Disease
• Shelter
• Predators

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Carrying Capacity

• The largest number of individuals of the same
  species that an area can support is called its
  carrying capacity.

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Example

• The wooded area between BMS and Makita only has
  enough food, water, and living space for a
  certain number of deer, rabbits, and squirrels.

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Lesson 1 Summary

• Ecosystems vary greatly in their biotic and
  abiotic factors.
• Ecosystems can be affected by natural events,
  such as droughts and severe weather.

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• Ecosystems can be affected by humans and other
  organisms.
• Ecosystems can be affected by diseases.