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Ch 54: Campbell Biology Chapter 54: Community Ecology

About This Chapter

The Community Ecology chapter of this Campbell Biology Companion Course helps students learn the essential lessons associated with community ecology. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Community Ecology textbook chapter.

How It Works:

  • Identify the lessons in the Campbell Biology Community Ecology chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover the community ecology topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Outcomes of interspecific competition
  • Different kinds of prey
  • Factors that impact species richness
  • Models of community organization
  • What ecological imbalance is
  • Kinds of ecological succession
  • Biogeographic factors that impact community diversity
  • Effects of pathogens on biological communities

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8 Lessons in Chapter 54: Campbell Biology Chapter 54: Community Ecology
Test your knowledge with a 30-question chapter practice test
Interspecific Competition, Competitive Exclusion & Niche Differentiation

1. Interspecific Competition, Competitive Exclusion & Niche Differentiation

When two species within the same environment require the same resources, it creates interspecific competition. Explore how interspecific competition creates competitive exclusion, local extinction, and niche differentiation.

What is Prey? - Definition & Examples

2. What is Prey? - Definition & Examples

Learn the definition of prey. See examples of and explore the many different types of prey. Understand their biological adaptations used to avoid predators.

Species Richness: Definition & Determining Factors

3. Species Richness: Definition & Determining Factors

The number of distinct species coexisting in an ecosystem is called the Species Richness. Explore the factors involved in species sampling, method of taxonomy, and importance of standardization in a series of examples.

Bottom-Up & Top-Down Models of Community Organization

4. Bottom-Up & Top-Down Models of Community Organization

Government structures are typically considered either top-down or bottom-up organizations. Become familiar with these community organization models using an analogy of biomass, defined as the total mass of living matter found within an ecosystem.

What is an Ecological Imbalance? - Definition & Explanation

5. What is an Ecological Imbalance? - Definition & Explanation

Ecological imbalance occurs when natural or human-caused disturbances disrupt an ecosystem. Learn the definition and explanation of ecological imbalance, and then explore how ecosystems work and see how it affects organisms like English ivy and salmon.

Ecological Succession: From Pioneer to Climax Communities

6. Ecological Succession: From Pioneer to Climax Communities

Changes in a species structure in a ecological community over time is called ecological succession. Explore the two types of ecological succession - primary and secondary - and what pioneer and climax communities are.

Biogeographic Factors Affecting Community Diversity

7. Biogeographic Factors Affecting Community Diversity

Biogeography combines two fields of study to examine the dynamic relationship of an environment to the biodiversity that exists within it. Discover the impact of latitudinal gradients, island effects, and the factors involved when moving to a new habitat.

Impact of Pathogens on Biological Communities

8. Impact of Pathogens on Biological Communities

Pathogens are bacterial agents that cause diseases and can spread to have a larger impact on a community of plants or animals. Learn how pathogens impact communities in aquatic, plant, animal, and human contexts, and understand how they extend far beyond an individual.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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