Main Ideas 3-2 ENERGY FLOW IaN pg. 51 Objective Autotroph 12. Food Chain Producer 13. Food Web Photosynthesis 14. Trophic Level Chemosynthesis 15. Ecological Pyramid Heterotroph 16. Biomass Consumer Herbivore Carnivore Omnivore Detritivore Decomposer Objective Identify, trace & evaluate the source, flow and efficiency of energy through interdependent organisms using food chains & webs. Believe deep down in your heart that you’re destined to do great things. - Joe Paterno

Where do you get your energy? https://www.youtube.com/watch?v=v6ubvEJ3KGM

I. Producers & Consumers A. Autotrophs 1. Producers that make their own food 2. Photosynthesis or Chemosynthesis B. Heterotrophs 1. Consumers that obtain food from other organisms How? Who are they dependent upon for energy?

II. Heterotrophs / Consumers A. Herbivores - ? (Define & Give an Example) B. Omnivores - ? (Define & Give an Example) C. Carnivores - ? (Define & Give an Example) D. Detritivores - ? (Define & Give an Example) E. Decomposers - ? (Define & Give an Example)

Heterotrophic Classification B C Heterotroph Example Decomposer A, B, C, D, E Herbivore Detritivore Omnivore Carnivore D E ? A B C A B C D E D E ? ?

III. Food Chain A. Models linear feeding relationship 1. Energy flows through ecosystem in one direction B. Trophic levels Each step in the food chain (This can vary depending upon community) Primary Producers Primary Consumers Secondary Consumers Tertiary Consumers Quaternary Consumers

IV. Food Web Shows more complex/realistic feeding relationships in an ecosystem. Trophic Levels still exist Tertiary Consumers Secondary Consumers Primary Consumers Primary Producers

How is Biomass expressed? V. Ecological Pyramids Model of energy & matter (3 Types) 1. Energy Pyramids 2. Biomass Pyramids 3. Pyramid of Numbers KEY CONCEPT? Page 72 How is Biomass expressed?

Ecological Pyramids IAN p 50 Divide your notebook page into 3 triangular shapes. Label & Create the 3 types of Ecological Pyramids using your own examples. YOUR PYRAMIDS MUST INCLUDE: At least 4 trophic levels w/ labels Specific labels for each pyramid Colorful illustrations REFERENCE Pages 72-73 in your textbook. Energy Pyramid Biomass Pyramid Pyramid of Numbers