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Unit 3 What shapes an Ecosystem?

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Presentation on theme: "Unit 3 What shapes an Ecosystem?"— Presentation transcript:

1 Unit 3 What shapes an Ecosystem?

2 Climate Weather – day to day condition of Earth’s atmosphere at a particular time and place Climate a year to year conditions of temperature and precipitation in a particular region

3 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

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


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


8 Biotic Factors Living Factors that influence an ecosystem Plant life
Animal life

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

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

11 Ecological Succession
a series of predictable changes in an environment

12 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

13 Examples of Pioneer Species

14 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

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