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Understanding Ecosystems: Relationships, Factors, and Organization in Ecology

In this lesson, we explore the biosphere and the critical roles of biotic and abiotic factors in ecosystems. We'll discuss ecological levels of organization, including ecosystems, populations, and communities. Through engaging activities and games, students will build teamwork skills while understanding competition, predation, and symbiotic relationships. An analysis of niche roles will be conducted, redefining how organisms interact within their habitats. Come prepared for a quiz and a debrief on our findings!

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Understanding Ecosystems: Relationships, Factors, and Organization in Ecology

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Presentation Transcript

  1. Unit 7, Day 2

  2. Homework Quiz (6 min) • Open notes! (stamp) • YouTube Video: Intro to Ecology • Biosphere • Biotic Factors • Abiotic Factors • Ecological Levels of Organization

  3. Agenda (1 min) • Homework Quiz • Agenda • Homework Debrief • Learning Goal • Games • Games Debrief • Relationships • Notes • Island Application • Homework

  4. Homework Quiz Debrief (6 min) • What does the biosphere include? How high, how low? • Biotic and abiotic factors. • Examples of each. • pH and salinity? • Ecological levels of organization: ecosystem, biosphere, organism, biological community, biome, population. Define all.

  5. Learning Goal (1 min) • Essential Skill #2.5 - I can describe the factors that contribute or detract to stability within an ecosystem and how both matter and energy move through the environment.

  6. Games (30 min) • Game Time Outside

  7. Games Debrief (8 min) • Game #1: Three teams, the human knot. • Game #2: Three “it”, freeze tag. • Game #3: Partners, piggyback rides. • Identify the characteristics and roles of each person involved. • What was the goal of the activity? • What needed to happen for you to meet the goal? • Describe your RELATIONSHIPS to others in the game 

  8. IT’S ALL ABOUT RELATIONSHIPS!!

  9. Breaking Down RELATIONSHIPS (6 min) • In your own words, on your paper, define the following terms: • Competition • Predation • Mutualism • Commensalism • Parasitism • What word(s) best define the games you played?

  10. Notes (6 min) • What do we want? • Sex and Food! • Habitat: The area where an organism lives. • Could be a single tree if that’s where it lives its life OR it could be a forest if it can go from tree to tree. • Niche (neesh or nich): Role or position that an organism has in its environment. • How it meets its needs for food, shelter, and reproduction. • RELATIONSHIPS!

  11. Notes (6 min) • Competition • >1 organism uses a resource at the same time. • Food, water, space, and light. • Strong survive, weak die. • Predation • 1 organism consumes other (food). • Cat  Bird, Venus Flytrap  Bugs

  12. Notes (6 min) • Symbiotic Relationships: close relationships btwn 2+ species • Mutualism: 2+ organisms BOTH BENEFIT. • Lichens = Algae feed fungi, fungi shelter algae. • Commensalism: 1 BENEFITS, 1 NEUTRAL. • http://www.youtube.com/watch?v=eWXOurnVTYg • Clownfish protected, anemone has no benefit. • Parasitism: 1 BENEFITS, 1 HARMED. • Heartworm harms dog. • Brown-headed cowbirds lay eggs in other bird’s nest. Baby cowbirds then kill the other babies.

  13. Project Activity (20 min) • In your islands (on back or separate paper) • Identify biotic vsabiotic factors. • Indicate niches of biotic factors. • Ensure that you have all of the following relationships: • Competition (species that need same resources) • Predation (species that eat others) • Mutualism (species that need each other) • Bees and flowers, spider crab and algae, bacteria and human, oxpecker and zebras/rhinos • Commensalism (one benefits, one neutral) • Birds and army ants, bird and tree • Parasitism (one benefit, other harmed)

  14. Homework (1 min) • Due Monday 4/15 or Tuesday 4/16 • YouTube Video: Energy in the Ecosystem • Homework Quiz

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