1. Part 1 Food Chains & Food Webs
Ecology
Part 1 Food Chains & Food Webs

2. Intro to Ecology Eco = earth Ology = study of
Interactions of all living organisms on earth

3. Living Organisms
Producers = make food from light (plants, algae)
Consumers = organisms that use other organisms for food
Decomposers = organisms that break down dead & decaying materials

4. Producers Autotroph = makes own food Uses photosynthesis
Green due to chlorophyll pigment
Trees, grasses, shrubs, flowering plants and algae in freshwater & marine environments

5. Consumers Heterotrophs Animals Must get food from other source
Herbivores =1st order
Carnivores = 2nd, 3rd order
lynx.uio.no/jon/gif/animals/deer
ynx.uio.no/jon/gif/animals/redfox12.jpg

6. Herbivore Eats plants Will have flat/broad teeth for grinding plants

7. Carnivore Eats other consumers
Teeth will usually be sharp for ripping and tearing

8. Omnivore Omnivores Eats both plants and other consumers
                                                         

9. Decomposers Break down dead and decaying materials
Garbage workers in ecosystem
Bacteria, worms, beetles, ants & fungi
termites
Dung Beetle
herbarium.usu.edu/fungi/FunFacts/Eworms.jpg

10. Food Chain
Source of energy to start food chain is the sun
Sun  producer  herbivore  carnivore
 indicates the direction the energy travels in a food chain or food web

11. Food Chain Shows relationship between plant & animal that eats it
PH  C

12. Grass  grasshopper  frog  snake  owl
                                                                                                                                                         
Grass  grasshopper  frog  snake  owl

13. Food Web Series of interconnected food chains for an ecosystem