Teacher’s Guide: Episode 14

Niche

In segment one, Patrice looks at how all organisms have their own role, or niche in their environment. Next, Patrice and Dave look at the niche of the pileated woodpecker. Then we take an up-close look at coral reef and the niches they fill in the ocean. Finally, Von and Marshall spend the day with conservation officer Joe Giarrusso and learn how he’s trying to control the impact of beavers in urban areas.

Students will:

  • Understand that environments support a diversity of living organisms that all share limited resources.
  • Identify and describe the roles of various organisms in an environment.
  • Predict what would happen if a species was removed from an environment.
  • Recognize the distinct characteristics of the beaver.
  • Describe the beaver in relation to its niche in a community.

Brainstorm jobs that people have in the community. Discuss with the students how those jobs are important to the health of the community. What skills are needed to perform the jobs? What tools and resources do people who do those jobs need? How many of those jobs are in the community? What people do they depend on to do their jobs, and what factors might impact their ability to do their jobs?

ANIMAL NICHES
Have students create a list of animals found in a specific habitat or ecosystem, such as a forest, desert, ocean, or wetland. Next, ask students to identify the ecological niche, or “job,” each animal has in its community. Students should think about how the animal survives and interacts with other organisms in its environment.

Students should answer questions such as:

  • What role does the animal play in the ecosystem?
  • What adaptations help the animal survive and fill its niche?
  • What organisms depend on this animal?
  • What organisms does the animal depend on?
  • What does the animal eat?
  • What predators or competitors affect the animal?
  • What environmental factors might impact the animal’s ability to survive and fill its niche?

After completing their research, students can share their findings with the class through a short presentation, poster, or graphic organizer.

HUMAN NICHES

Have students interview an adult about their job or career. Students should ask questions similar to those used in the previous activity to explore the person’s “niche” in their workplace or community.

Possible interview questions include:

  • What is your main job or responsibility?
  • What skills or adaptations help you succeed in your job?
  • Who depends on you at work?
  • Who do you depend on to do your job well?
  • What challenges make your job more difficult?
  • What tools or technology help you perform your work?

After the interview, students can write a short job profile summarizing the information they gathered.

What's My Role?

Nature journal

Take a nature walk with your students and have them observe plants and animals in their environment. Ask students to record the role, or niche, each organism plays in its community. For example, grass helps hold soil in place and provides food and shelter for animals. Squirrels spread seeds, and woodpeckers help control insect populations by eating insects.

When students return to the classroom, have each student choose one organism they observed. Then ask them to describe the organism’s niche to the class without naming it. See if the rest of the class can identify the organism based on the clues about its role in the ecosystem.

The pileated woodpecker lives in coniferous and deciduous forests.

Vocabulary

Community
Erosion
Niche
Polyp
Larvae
Zooxanthellae
Burrow

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