Energy Flow Through Ecosystems Ecosystem and Energy Roles
- Slides: 12
Energy Flow Through Ecosystems
Ecosystem and Energy Roles n n Ecosystem: all living & non-living things that interact in an environment Energy Role in an Ecosystem q Determined by: n n How it obtains energy How it interacts with other living organisms in its ecosystem
Some Energy Roles n n The sun: provides energy Producers: harness energy from the sun q n Consumers: organisms that eat something else q n ex. plants ex. animals Decomposers: return energy to the environment q ex. fungus, bacteria
Producers n n Plants harness energy from the sun through photosynthesis They are the base of every food chain q Source of food for all other animals
Consumers n 4 Types q Herbivore: eats only plants n q Carnivore: eats only meat n q Ex. Polar bear Onmivore: eats plants and animals n q Ex. Cows, horses Ex. Humans, grizzly bears Scavenger: carnivore that feeds on bodies of dead organisms n Ex. Vultures
Decomposer n Decomposers break down wastes and dead organisms and return the raw materials to the environment q Ex. Bacteria, fungi
Energy flow through biological systems
Food Chains n Food Chain: series of events in which one organism eats another and obtains energy
Food Chains Continued n n n Arrows always points in the direction of energy flow 1 st organism is always the producer 2 nd organism is the consumer that eats the producer q n 3 rd organism is the consumer that eats the 1 st level consumer q n Primary consumer Secondary consumer And so on…. .
Energy Pyramid n 2 nd Law of Thermodynamics: energy is not transferred from one object/organism to the next with 100% efficiency q n Some of the energy is lost to the environment Energy Pyramid shows the amounts of energy that moves from one level to the next
Sample Energy Pyramid
Energy Transfer n n Only about 10% of energy is transferred from one level to the next The other 90% is used by the organism to carry out its life processes or it is lost to the environment
- How does energy flow through an ecosystem
- Energy transfer in ecosystem
- Energy flow through an ecosystem
- How does energy flow through an ecosystem
- Flow of energy
- How does energy move through most ecosystems on earth
- Chapter 4 lesson 2 energy flow in ecosystems answer key
- Energy in ecosystems lesson 3 answer key
- Primary consumers
- Section 1 energy flow in ecosystems
- What determines an organism's energy role?
- What are the energy roles in an ecosystem
- Energy flow and material cycling in ecosystem