Energy flow in ecosystem
All living things need energy.
Some biotic factors get their energy from the sun. Others eat other biotic factors
As a result, energy flows in ecosystems.
This flow of energy can be represented with food chains and food webs.
For most ecosystems, the ultimate energy source is the sun
As you move from one organism to another you move up trophic levels.
For example moving from the mollusk to the white perch would be a trophic level
Producers which use photosynthesis to create their energy are a large source of energy in an ecosystem. Plants and algae are examples of producers.
As consumers eat these producers, carbon bonds are broken and energy is released and this energy is transferred from one level to another.
As you move from one trophic level to another you lose 90 percent of the energy.
This is known as the 10 percent rule.
For example, if you start with 1000 Joule and a grasshopper eats the plants only 10 Joule will be transferred, and a bird eats the insect on 1 Joule will be transferred
Where does this energy go?
Most of the energy is lost as heat
The energy flow in an ecosystem follows the laws of thermodynamic
The first law states that states that energy cannot be created or destroyed in an isolated system however it can be converted from one form to another
The second law states that this energy conversion is never completely efficient.
As a result, most energy is lost as heat.