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Chapter 12: TE Communities and Populations

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(Opening image courtesy of Metatron, http://en.wikipedia.org/wiki/File:Ocellaris_clownfish.JPG,, and under the Creative Commons license CC-BY-SA 3.0.)

Communities and Populations

Outline

Lesson 12.1: Community Interactions

12.1.1 What Is a Community?

12.1.2 Predation

  • Predation and Populations
  • Keystone Species
  • Adaptations to Predation

12.1.3 Competition

  • Interspecific Competition and Extinction
  • Interspecific Competition and Specialization

12.1.4 Symbiotic Relationships

  • Mutualism
  • Commensalism
  • Parasitism

12.1.5 Ecological Succession

  • Primary Succession
  • Secondary Succession
  • Climax Communities

Lesson 12.2: Characteristics of Populations

12.2.1 Population Size, Density, and Distribution

  • Population Density
  • Population Distribution

12.2.2 Population Structure

  • Population Pyramids
  • Survivorship Curves

12.2.3 Population Growth

  • Population Growth Rate
  • Dispersal and Migration

12.2.4 Patterns of Population Growth

  • Exponential Growth
  • Logistic Growth
  • K-Selected and r-Selected Species

Lesson 12.3: Human Population Growth

12.3.1 Early Population Growth

12.3.2 Demographic Transition

  • Death Rates Fall
  • Birth Rates Fall
  • Stages of the Demographic Transition

12.3.3 Recent Population Growth

12.3.4 Future Population Growth

  • Census Update: What the World Will Look like in 2050

Lesson 12.4: The Biodiversity Crisis

12.4.1 What Is Biodiversity?

  • Millions of Unseen Species

12.4.2 Why Is Biodiversity Important?

  • Economic Benefits of Biodiversity
  • Ecosystem Services of Biodiversity

12.4.3 Human Actions and the Sixth Mass Extinction

  • Causes of Extinction
  • KQED: Disappearing Frogs
  • KQED: Nonnative Species
  • How You Can Help Protect Biodiversity
  • KQED: Lost Salmon

12.4.4 The Encyclopedia of Life

  • Field Guides
  • EOL Podcasts
  • One Species at a Time

12.4.5 The Biodiversity Heritage Library

Lesson 12.5: Natural Resources and Climate Change

12.5.1 Renewable and Nonrenewable Resources

  • Renewable Resources
  • Nonrenewable Resources

12.5.2 Soil and Water Resources

  • Soil
  • Water
  • KQED: Are We in Danger of Running Out of Water?
  • Too Much of a Good Thing

12.5.3 The Atmosphere

  • Air Pollution
  • Acid Rain
  • Ozone Depletion

12.5.4 Global Climate Change

  • What Is the Greenhouse Effect?
  • Global Warming
  • Effects of Climate Change
  • KQED: Climate Watch: California at the Tipping Point
  • KQED: Giant Redwoods and Global Warming
  • KQED: Acidic Seas
  • What Can Be Done?

12.5.5 KQED: Earth Day

Pacing the Lessons

Use the Class Periods per Lesson table below as a guide for the time required to teach the lessons of this chapter.

Lesson Number of Class Periods
12.1 Community Interactions 2.0
12.2 Characteristics of Populations 1.0
12.3 Human Population Growth 1.0
12.4 The Biodiversity Crisis 1.0
12.5 Natural Resources and Climate Change 2.0
  • Class periods are assumed to be 60 minutes long.

Chapter Outline

Chapter Summary

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