8 DefinitionsEcosystem: A community interacting with the non-living parts of its environment.Biotic: Living organisms in the environment, such as plants or animals.Abiotic: Non-living physical features of the environment, such as soil and water.
9 Evidence 1: Card SortSort the cards into 3 columns. Record your answers in a table like below:Biotic Abiotic Unsure (or both/can’t agree)
10 Evidence: Sort contd…Look at those that are in the unsure column. Why were those confusing?Write down the rule that you used to decide if something is biotic or abiotic.
11 Let’s Practice!For each picture, name as many biotic and abiotic factors as you can for each ecosystemWhere do you think the ecosystem boundaries are? (Where does it begin and end?)
12 What are the Biotic and Abiotic Factors in the Image?
15 River Ecosystem Biotic Abiotic Trees Fish Moss Bugs Branches Algae Amphibians Birds Snails Plants Animals Leaves rootsRiver/water Rocks Oxygen Sand Dirt Sun Clouds Air/atmosphere Glacier?
16 River Ecosystem Biotic Abiotic Moss Trees Algae Bacteria Fish Frogs Squirrels Twigs, Leaves, debris Dead animals Micro-organisms Birds InsectsSand Water Dirt Rocks Sun Oxygen Bubbles Clouds Gold Mud
20 Ocean Biotic Abiotic Sand Water Boat Oxygen CO2 Sunlight Rock Metal MineralsHuman Fish Barnacles Coral Snails Skeletons Shells Algae Sharks Fish eggs Squid Octopus Whales Dolphins Mold Plankton Seaweed/Kelp
21 OceanBioticAbioticSand Ship Airtank Planes Plastic litter Bubbles Sun Rocks treasure Glass Ice SuitBacteria Co2 Coral Corpses Fish Scuba diver Whales Seaweed Aquatic plants Sea urchins Blood
22 Evidence 2: Courtyard Ecosystem Your group will be assigned an area in the courtyard.List as many biotic and abiotic factors as you can.Write down the boundaries of your assigned ecosystem.What are the Inputs? The Outputs?
23 Analysis QuestionsYou’re on the beach and find a piece of driftwood. Is it biotic or abiotic? Why?Is a patch of lawn an ecosystem? Explain.What are some biotic & abiotic factors that would affect a plant but not a rabbit?
24 Summary What did you think about ecosystems before this lesson? What did you learn about ecosystems from this lesson? (Minimum of 3 sentences!!!)What are some further thoughts or questions you have about ecosystems?