Introduction to the Physical Environment

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Introduction to the Physical Environment
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Objective

• Describe the factors that limit organisms in
  their environment

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Introduction

• What is Environment????

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Environment

• Total surroundings of an organism
• Smith,R.E. 1992

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Environment Includes

• Biotic factors
• Abiotic factors

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Ecosystem

• Abiotic and biotic factors functioning together
  in a region

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Abiotic Factors

• The Physical Environment

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Energy

• Almost always from the sun
• Energy flows through ecosystems

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Physical Factors

• Climate
• Temperature
• Precipitation
• Sunlight
• Consistency
• Extremes

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Soil

• Abiotic component
• Biotic component

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Space

• Plants
• Animals

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Disturbances

• Fire

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Disturbances

• Weather related
• wind, flood, hurricane, tornado, drought, ice

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Disturbances

• Animal related
• Grazing, stampede, insects, beavers

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Disturbances

• Human related
• Logging, agriculture, development, mining,
  pollution, other

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Chemical Factors

• Water
• Importance
• Water cycle

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Chemical Factors

• Oxygen/CO2
• Carbon
• Nitrogen
• Phosphorous
• Sulfur
• Other

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Limiting Factors

• Any factor that restricts the success of a
  species
• Varies from species to species
• Range of tolerance

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Habitat / Niche

• Habitat The place where an organism lives
• Niche- the organisms function in its habitat

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Objective

• Describe the factors that limit organisms in
  their environment

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Have a Great Day
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