Unit 3 What shapes an Ecosystem?

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Unit 3 What shapes an Ecosystem?
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Climate

• Weather day to day condition of Earths
  atmosphere at a particular time and place

• Climate a year to year conditions of temperature
  and precipitation in a particular region

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Factors that effect climate
Trapping of heat by the atmosphere latitude Transport of heat and wind and ocean currents
Amount of precipitation Shape of landmass Elevation of landmass
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GREENHOUSE EFFECT

• Carbon dioxide-methane-water vapor and other
  atmosphere gases trap heat energy and maintain
  Earths temperature range. The natural situation
  in which heat is retained by this layer of
  greenhouse gases is called the greenhouse effect.

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Latitude

• As a result of differences in latitude and the
  angle of heating, Earth has three main climates
  zones
• Temperate
• Tropical
• polar

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Biotic Factors

• Living Factors that influence an ecosystem
• Plant life
• Animal life

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Abiotic Factors

• Physical, non-living factors that influence an
  ecosystem
• Examples-temperature, precipitation, humidity,
  wind, nutrients, sunlight

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Biotic and Abiotic factors determine the survival
and growth of an organism and the productivity of
the ecosystem in which an organism lives.

• The area where an organism lives is called its
  habitat.

• A niche is the full range of physical and
  biological conditions in which an organism lives
  and the way in which the organism uses those
  conditions. It is an organisms occupation.

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• Ecological Succession
• a series of predictable changes in an environment

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Succession

• Primary Succession succession that occurs on
  the surface where no soil exists
• Pioneer Species first species to populate the
  area
• Examples- lichen and moss

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Examples of Pioneer Species

• Lichen

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Succession

• Secondary Succession following a disturbance
  that destroys a community without destroying the
  soil.
• Example- land cleared and plowed for farming
• Example Fires set by lightning