Feeding Relationships Determine the Path of Energy & Chemicals in Ecosystems & Energy

Flows Through Ecosystems 

By: Kelsey D., Tony M, Mia G. 

Flow of Energy In Ecosystems

•   Energy comes from the sun to enter through living things.

• After the energy comes from the sun and enters through  photosynthesis which is by bacteria.

 • theyre are 2 types of organisms that have direct

access to the energy.  • herbivores feed on the plant while the plant is alive

 • Decomposers feed on the dead plants.

 • In some ecosystems the majority of energy goes to

the Decomposers.

Trophic Levels in the Ecosystem

• the energy is transferred through trophic levels through food webs.

•  when an animal feeds off of a certain thing it loses heat.

• During respiration energy is lost.• when the trophic level goes up the more energy it

loses. 

comaparison from ecosystem productivity and biomass. • flow of energy through ecosystems are measured in

units of heat.•  biomass is renewable is a renewable energy source.•  Biomass is devrived from living or recently living

organisms.•  Its a plant matter that is usually used to generate

heat. 

3 Types of ecological pyramids

  1.Numbers: • The pyramid of numbers is good for describing the

food in an ecological system.P• lants are at the way top of the pyramid with the

numbers included.2. Biomass:•  A biomass pyramid is resulted when the combined

weight of the producers are larger than consumers.•  

 3.Energy:•  Energy is passed down from main sorces to all other

forms of life.

 

 

 

 

Articles:

http://www.helium.com/items/422447-the-importance-of-energy-flow-in-an-ecosystem   http://www.helium.com/items/1341820-ecosystems

sources:

www.helium.com   Michael E. The Physical Environment: an Introduction to Physical Geography.2006. Date visited.  http://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/title_page.html  www.mhhe.com/biosci/esp/2001_gbio/.../ecm3s2_6.htm