Intro to Ecosystems Biotic vs Abiotic Factors Biodiversity

Intro to Ecosystems Biotic vs. Abiotic Factors

Biodiversity • The variety of organisms a specific environment or on earth.

Is it Living? 9/18/13 • Key Question: What are some living and non-living things in the environment? • Initial Thoughts

What factors both living and non living will affect my life? 3 minutes To THINK PAIR SHARE

Factors affecting mouse • • • Predators Food Shelter Temperature Weather Competitors • Pathogens • Parasites • Clean Water

Would the same factors affect this flower?

Factors Affecting Plant • • • Predators Food Shelter Temperature Weather Competitors • • • Pollinators Soil Nutrients Wind Aspect Daylight

Definitions • Ecosystem: 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.

Evidence 1: Card Sort the cards into 3 columns. Record your answers in a table like below: Biotic Abiotic Unsure (or both/can’t agree)

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.

Let’s Practice! • For each picture, name as many biotic and abiotic factors as you can for each ecosystem • Where do you think the ecosystem boundaries are? (Where does it begin and end? )

What are the Biotic and Abiotic Factors in the Image?

Check yourself Biotic Trees, cactus, shell, scorpion, grass/seaweed Abiotic Sun, clouds, sand, water, ice, snow

River Ecosystem

Biotic Trees Fish Moss Bugs Branches Algae Amphibians Birds Snails Plants Animals Leaves River Ecosystem roots Abiotic River/water Rocks Oxygen Sand Dirt Sun Clouds Air/atmosphere Glacier?

Biotic River Ecosystem Moss Trees Algae Bacteria Fish Frogs Squirrels Twigs, Leaves, debris Dead animals Micro-organisms Birds Insects Abiotic Sand Water Dirt Rocks Sun Oxygen Bubbles Clouds Gold Mud

Ocean Ecosystem

Ocean Biotic Human Fish Barnacles Coral Snails Skeletons Shells Algae Sharks Fish eggs Squid Abiotic Octopus Whales Dolphins Mold Plankton Seaweed/Kelp Sand Water Boat Oxygen CO 2 Sunlight Rock Metal Minerals

Ocean Biotic Abiotic Bacteria Co 2 Coral Corpses Fish Scuba diver Whales Seaweed Aquatic plants Sea urchins Blood Sand Ship Airtank Planes Plastic litter Bubbles Sun Rocks treasure Glass Ice Suit

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?

Analysis Questions 1. You’re on the beach and find a piece of driftwood. Is it biotic or abiotic? Why? 2. Is a patch of lawn an ecosystem? Explain. 3. What are some biotic & abiotic factors that would affect a plant but not a rabbit?

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?

Reflection

Big Idea • Abiotic is non-living things, and biotic is living things.