Ch 26: Ecosystems and Biomes

About This Chapter

Watch video lessons to study key concepts involving ecosystems and biomes. Review the different characteristics of biomes while also exploring the roles of habitats and niches in ecosystems.

Ecosystems and Biomes - Chapter Summary

Tropical rainforest, savanna, tundra, taiga -- do any of these terms sound familiar? If you need a refresher on biomes and ecosystems, take a look at the video lessons in this chapter. Our instructors cover the climates and inhabitants of the world's biomes ranging from the desert to the ocean.

You will explore ecological concepts, including niches, habitats, food chains and trophic levels. The lessons also take you through the energy flow in ecosystems. After studying this chapter, you should be comfortable with:

  • Listing the levels of ecology
  • Defining habitat and ecological niche
  • Characterizing the world's biomes
  • Describing the climate and organisms of the open ocean biome
  • Identifying the primary productivity levels of biomes
  • Explaining the flow of energy in ecosystems

Usually under 10 minutes in length, our video lessons are loaded with tons of images and examples to help these ecological concepts come alive. If you wish to go back and rewatch major points, use our included tags to jump around the video as desired. You also have access to lesson transcripts, which may include helpful links to other text lessons, along with self-assessment quizzes.

7 Lessons in Chapter 26: Ecosystems and Biomes
Test your knowledge with a 30-question chapter practice test
The Environment, Levels of Ecology and Ecosystems

1. The Environment, Levels of Ecology and Ecosystems

Do you know the difference between an environment and an ecosystem? In this lesson, you'll find out what makes an environment, and what makes an ecosystem. You'll also learn what ecology is and some of the ways that scientists study ecology using organisms, populations, communities, ecosystems and even the entire biosphere.

Ecosystems, Habitats and Ecological Niches

2. Ecosystems, Habitats and Ecological Niches

Check out this video lesson to understand the many complex aspects of an ecosystem. See how animals live in habitats and survive amongst their surroundings.

Biomes: Desert, Tropical Rainforest, Savanna, Coral Reefs & More

3. Biomes: Desert, Tropical Rainforest, Savanna, Coral Reefs & More

Take a trip around the world and learn all about different biomes. Why can you only find certain plants and animals in specific places? What are the most fertile climates on Earth? Watch on to answer these and other questions.

Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines

4. Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines

Take a trip with us in this lesson, starting in the Pacific Ocean, traveling across California through the Central Valley and up to the peaks of the Sierra Nevada mountains. We'll learn how oceans, elevation, and people can determine which types of biomes are found in different areas and check out the Earth's most massive and oldest organisms.

Open Ocean Biome: Plants, Animals, Climate & Definition

5. Open Ocean Biome: Plants, Animals, Climate & Definition

Seventy-one percent of the surface of our planet is covered by the oceans. It should be no surprise that the open ocean biome is the largest biome on Earth. In this lesson, we will investigate the properties and inhabitants of the open ocean biome.

Primary Productivity of Biomes

6. Primary Productivity of Biomes

Imagine a desert, a rainforest, and a lake. All of these areas are similar in that there are plants growing in them. These areas all vary because the amount of plant production is different based on the type of habitat. This lesson will explore the concept of primary productivity and how it varies by biomes. It will also discuss the most productive biomes and the biomes that produce the least biomass.

Food Chains, Trophic Levels and Energy Flow in an Ecosystem

7. Food Chains, Trophic Levels and Energy Flow in an Ecosystem

In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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