About This Chapter
Introduction to Ecosystems - Chapter Summary and Learning Objectives
These video lessons provide an introduction to ecosystems. Learn about big-picture concepts, like global ecology, as well as smaller - though no less important - facets of ecosystems, like ecological niches. An experienced instructor will explain biodiversity, long-term carbon storage, and energy flow as they relate to ecosystems. At the end of this chapter, you should be able to:
- Describe what ecology and ecosystems are
- Define biodiversity
- Discuss food chains, predator/prey interactions, and symbiotic relationships
- Explain the carbon cycle
|The Environment, Levels of Ecology and Ecosystems||Define these terms and learn about five levels of ecology: organismal ecology, population ecology, community ecology, ecosystem ecology, and biosphere ecology.|
|Ecosystems, Habitats, and Ecological Niches||Define these concepts, and discuss how they're interrelated.|
|Global Ecology: Definition and Overview||Define the concept of global ecology, and provide examples where global ecology can be applied.|
|What is Biodiversity? - Definition and Relation to Ecosystem Stability||Define biodiversity, and explain its role in ecosystems.|
|Food Chains, Trophic Levels and Energy Flow in an Ecosystem||Describe how each of these affects an ecosystem.|
|The Carbon Cycle and Long-Term Carbon Storage||Describe the carbon cycle, and explain the effects of long-term carbon storage.|
|Fossil Fuels, Greenhouse Gases, and Global Warming||Describe the role that fossil fuels and greenhouse gasses play in the phenomenon of global warming.|
|Predator/Prey Interactions, Camouflage, Mimicry, and Warning Coloration||Explain how the techniques of camouflage, mimicry, and warning coloration affect predator/prey interactions.|
|Symbiotic Relationships: Mutualism, Commensalism, and Parasitism||Describe three types of symbiotic relationships.|
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.
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.
3. Global Ecology: Definition and Overview
A large oil spill in the middle of the ocean and the release of greenhouse gases into the atmosphere are examples of environmental problems that can influence the entire planet. This lesson will explore the study of environmental problems occurring on a global scale, including the impact of globalization and current major global environmental problems.
4. What is Biodiversity? - Definition and Relation to Ecosystem Stability
Imagine making a list of all of the species you have ever heard of; it would be an enormous list! There are many different species on this planet. This lesson will explore the diversity of species, as well as the different types of diversity and how diversity of life is essential for maintaining healthy ecosystems.
5. 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.
6. The Carbon Cycle and Long-Term Carbon Storage
All living organisms have a role in the carbon cycle. Do you know you understand how humans, animals and plants use carbon? This lesson will introduce you to the carbon cycle and explain how it functions on a global scale.
7. Fossil Fuels, Greenhouse Gases, and Global Warming
In this video lesson, you'll learn what roles fossil fuels and greenhouse gases play in global warming, as well as what life on Earth can expect due to rising carbon dioxide levels within Earth's atmosphere.
8. Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration
You probably know that skunks can be quite stinky, bees sting and monarch butterflies are pretty, but do you know why? This lesson will introduce you to the reasons why some animals look or act the way they do and how these things relate to the predator/prey relationship.
9. Symbiotic Relationships: Mutualism, Commensalism & Parasitism
If your cat or dog has ever had fleas, you've witnessed symbiosis in action. In this lesson, learn the many types of symbiosis in biology, and how these relationships can have a positive, negative, or neutral effect on the individual species.
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Other chapters within the Life Science: Middle School course
- Introduction to Life Science
- Characteristics & Chemicals of Life
- The Parts of Cells
- DNA Replication & Mutation
- Cell Division & the Cell Cycle
- How Living Organisms Get Energy
- Classification of Organisms
- The Origin & History of Life On Earth
- Genetics & Hereditary Traits
- Genetic Engineering Basics
- Natural Selection & Evolution in Life Science
- Microbiology & Types of Microbes
- Types of Ecosystems
- Changing Ecosystems
- Birds & Mammals
- Animal Behavior & Communication
- Mammal Reproduction & Development
- The Respiratory System
- The Cardiovascular System
- The Blood Vessels
- The Digestive System
- The Urinary & Endocrine Systems
- The Brain & Nervous System
- The Muscular System
- The Skeletal System & Connective Tissue
- Sight, Hearing & Other Senses
- Health Issues & Concerns
- Plant Biology & Structure
- How Plants Grow & Reproduce
- Environmental Concerns
- Natural Resources
- Earth History & Geologic Time