About This Chapter
Basics of Ecology - Chapter Summary
This collection of science lessons provides an overview of fundamental topics in the study of ecology. You'll review the levels of ecology and explore concepts such as population dynamics, carrying capacity, animal mating systems and biological succession. The chapter's expert instructors help you differentiate between the Earth's biomes and understand the different cycles of matter. Upon completion of this chapter, you'll be able to:
- Explain the levels of ecology, ecosystems and the environment
- Understand concepts related to population dynamics in ecology
- Define ecology concepts such as carrying capacity, migration and dispersion
- Analyze animal mating systems, mate choice, sexual selection and male competition
- Describe the social behavior of animals
- Identify types of community ecology
- Recognize the importance of ecological niches and species diversity
- Know what succession in biology is
- List and describe the Earth's biomes
- Contextualize food chains, trophic levels and energy flow in an ecosystem
- Summarize the nitrogen cycle and carbon cycle
- Assess an ecosystem's abiotic factors
Studying this chapter helps you review basic ecology concepts quickly and efficiently. You'll find that our expert instructors present each lesson in an engaging and straightforward manner that simplifies the learning process and makes it more enjoyable.. Self-assessment quizzes are available so you can test your understanding of the material, and you can print the lesson transcripts to help you review key ecology definitions and concepts offline.
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. Population Dynamics in Ecology: Definition & Concepts
In this lesson, we look at how population is an ecological concept just as it is a sociological one. We will look at wildlife populations by comparing them to human social actions and define key concepts for understanding population from an ecological perspective.
3. Carrying Capacity, Migration & Dispersion
Have you ever wondered why some types of birds fly south in the winter or why some animals form territories? Watch this video to learn about a species' maximum growth capabilities, the way its members group themselves and why they might migrate to new locations every year.
4. Animal Mating Systems, Mate Choice, Sexual Selection & Male Competition
Choosing a mate is the single most important thing that most animals will do for the continuation of their species. In this lesson, we look at what goes into mate selection, as well as how that biology may influence who we fall for.
5. Social Behavior of Animals
Why does that squirrel flap its tail when your dog gets close to the tree? Or why are you more willing to donate a kidney to a sibling than a stranger? Learn about these and other behaviors that come along with living in a social group.
6. Community Ecology: Definition & Types
Community ecology looks at the interactions between populations of organisms. Here we explore a polar ecosystem in Greenland to describe what community ecology entails and what it really means to be at the top of the food chain.
7. Ecological Niche: Definition & Importance
Most people want to feel like they belong and have an important role in society. This is also true in a biological aspect. In this lesson, we will learn about ecological niches as well as the roles of organisms and the various aspects of their lives.
8. What Is Succession in Biology? - Definition & Examples
This lesson covers succession in biology. You'll learn the difference between primary and secondary succession and look at some specific examples of succession in different ecosystems.
9. What is Species Diversity? - Definition, Importance & Examples
Have you ever wondered how many species live on Earth? Earth is full of amazing creatures. In this lesson, you will learn about the importance of species diversity. At the end, test your knowledge with a quiz.
10. Overview of the Earth's Biomes
Biomes are defined both climatically and geographically as areas with similar factors, such as plants and animals, soil quality, and growing seasons. In this lesson, we'll learn about the five major categories of the Earth's biomes.
11. 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.
12. Cycles of Matter: The Nitrogen Cycle and the Carbon Cycle
Matter is constantly cycled between living and nonliving parts of the environment. Processes like photosynthesis and nitrogen fixation allow the carbon and nitrogen cycles to regenerate needed substances by recycling Earth's atoms.
13. Abiotic Factors of an Ecosystem: Definition & Examples
When it comes to ecosystems, a mountain, a river, and a cloud have more in common than you might think. Abiotic factors have specific and important roles in nature because they help shape and define ecosystems.
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Other chapters within the Pennsylvania Grades 4-8 - Science Subject Concentration (5159): Practice & Study Guide course
- Scientific Inquiry & Methodology
- Scientific Data Collection & Analysis
- Science Laboratory Equipment & Safety
- Major Developments & Historical Figures in Science
- Basic Principles of Matter & Energy
- Relationships Between Matter & Energy
- Structure of an Atom
- Interdisciplinary Applications of Energy & Matter
- Impact of Science & Technology on the Environment
- Energy Production & Resource Use
- Science & Technology Used in Everyday Life
- Science & Public Health
- Mechanics in Physics
- Analyzing Motion & Forces
- Electricity & Magnetic Forces
- Wave Characteristics & Phenomena
- Light, Sound & Waves
- Elements & The Periodic Table
- Chemical Bonding & Simple Chemical Compounds
- Interpreting Chemical Formulas
- Matter & Phase Changes
- Balancing & Using Chemical Equations
- Acid-Base Chemistry
- Understanding Solutions & Solubility
- Structure & Function of Cells & Organelles
- Understanding Biochemistry
- Understanding Genetics
- Theory & Mechanisms of Evolution
- Hierarchical Classification of Living Things
- Plant Structure & Function
- Animal & Human Anatomy & Physiology
- Earth's Surface Materials
- Earth's Internal Structure & Processes
- Geologic History
- Earth's Hydrosphere
- Earth's Bodies of Water
- Basics of Meteorology
- Earth's Climate & Seasons
- The Solar System & The Earth-Moon-Sun Relationship
- Galaxies & the Universe
- Space Exploration & Technology
- Pennsylvania Grades 4-8 - Science Subject Concentration Flashcards