Lesson 7
Lesson 7
Community Interactions
Community Interactions
Embedded Files
Happy Halloween!
Learning Intention
Students will be able to apply their knowledge of community interaction vocabulary to new ecosystems.
Success Criteria
I am successful when I can...
1) Apply my knowledge of ecology to past regents questions.
2) Engage with a video that demonstrates many community interactions.
3) Explore by actively reading a text on the different types of community interactions.
4) Explain by interacting with an A.I. trained to test me on new situations.
5) Elaborate and Evaluate my understanding by solving a problem in a new context
Reminders
1) Test 10/7 on Ecology Lessons 1-10
2) Tutoring Thursday in A-301 from 2-4 pm.
Agenda
Activity 1) Something looks Sus'
Activity 2) Engaging with a video
Activity 3) Exploring by Active Reading
Activity 4) Elaborating and evaluating with regents-esque type questions.
Standard: HS-LS2-6.
Evaluate claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms
Activity #1
Something Looks Sus'
Activity #2
Engage
McDowell
Frayer Model
Activity #3
Cengage
Active Reading
Explore
Activity #4
Vocabulary
Vocabulary:
Types of Interactions
And Jot
Predation:
An interaction when one organisms captures and feeds on another. The predator eats the prey.
Competition:
Organisms of the same or different species compete for a resource (food, water, nutrients).
Symbiosis:
A relationship where two species live closely together. There are THREE (3) types of symbiosis:
1) Mutualism:
Both species benefit from the relationship.
2) Commensalism:
One member benefits and the other is neither helped nor harmed.
3) Parasitism:
One organism lives on or inside another organism and harms it. The organism that benefits is called the parasite. The organism that is hurt is called the host.
A Shifting Balance in Meadow Valley
A Shifting Balance in Meadow Valley
Meadow Valley is home to grasses, wildflowers, shrubs, rabbits, mice, hawks, and owls, all linked in a food web. Recently, coyote numbers have risen, hunting rabbits and small mammals. This has forced some species to change their activity patterns and increased competition for food with hawks and owls.
At the same time, a fast-growing plant called thornbrush has spread,stealing nutrients and sunlights from native plants. Its dense, thorny growth deters many herbivores, though insects like beetles and caterpillars have adapted to eat it. These insects now provide food for sparrows and wrens.
With fewer grasses and wildflowers, rabbits and mice have been pushed into new areas to find food, which shifts predator populations as well. Pollinators such as bees and butterflies are also declining as wildflowers disappear, which may make it harder for some plants to reproduce.
The rise of coyotes and thornbrush shows how quickly Meadow Valley’s balance can shift, with changes in one species rippling through the ecosystem.
Questions
Questions
Which type of interaction is represented by the relationship between coyotes and rabbits?
(1) Competition
(2) Predation
(3) Mutualism
(4) Parasitism
What is one possible impact on the hawk population if the number of rabbits continues to decrease?
(1) Hawks will begin to feed on thornbrush plants.
(2) The hawk population may decrease due to reduced food availability.
(3) Hawks will shift to being herbivores to survive.
(4) The hawk population will remain unaffected by rabbit numbers.
Identify the type of interaction between the thornbrush and native grasses and wildflowers.
(1) Commensalism
(2) Competition
(3) Mutualism
(4) Parasitism
Explain how the spread of Thornbrush has impacted the food web in Meadow Valley.
If beetle populations feeding on Thornbrush increase significantly, which of the following is the most likely consequence?
(1) An increase in the population of sparrows and wrens due to more available food
(2) A decrease in the coyote population as they begin to eat beetles
(3) The disappearance of owls from Meadow Valley
(4) The decline of native wildflowers due to beetles feeding on them
Describe one way in which a decline in pollinators could affect the plant community in Meadow Valley.
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