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An Interactive Introduction to Organismal and Molecular Biology, 2nd ed.: Introduction to Ecology

An Interactive Introduction to Organismal and Molecular Biology, 2nd ed.
Introduction to Ecology
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table of contents
  1. Cover
  2. Title Page
  3. Copyright
  4. Table Of Contents
  5. Introduction
  6. Introduction to Science
    1. Nature of Science
    2. Scientific Controversies
    3. Information Communication
    4. Stakeholders and Authority
    5. Bibliographies
  7. Organismal Biology
    1. Introduction to Ecology
    2. Biodiversity
    3. Systems Thinking and the Carbon Cycle
    4. Climate Change
    5. Species Interactions
    6. Population Growth
    7. Evolution
    8. Phylogenetic Trees: Modeling Evolution
    9. Reproduction
  8. Molecular Biology
    1. Introduction to Molecular Biology
    2. Protein Structure and Function
    3. Gene Expression Overview
    4. Protein Synthesis I: Transcription
    5. Protein Synthesis II: RNA Processing
    6. Protein Synthesis III: RNA Interference
    7. Protein Synthesis IV: Translation
    8. Protein Synthesis V: Additional Regulation
    9. Cell Signaling
    10. Genetic Engineering

6

Introduction to Ecology

Andrea Bierema

Ecology: The study of how organisms interact with each other and their environment.

Ecological Levels

Ecology is studied at different levels. For instance, it can focus on the interaction of individuals within the same species (population ecology) or individuals of different species (community ecology). See the figure below for all of the levels and click on the plus hotspots for definitions and more information.

The original version of this chapter contained H5P content. You may want to remove or replace this element.

In this unit, we will examine ecology at these various levels. First, we examine biodiversity, which addresses all of the ecological levels. Next, we consider the broad levels of biosphere and ecosystem ecology by learning about nutrient cycling and climate change. Then we focus on community ecology, learning about the various ways that species interact with one another. We consider population ecology, focusing on how population sizes change over time and the factors that influence those changes.  We learn about evolution and modeling evolution using phylogenetic trees, which evolution occurs at the population level but is often influenced by biotic and abiotic factors. Lastly, we consider reproductive strategies.

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Copyright © 2021 by Andrea M.-K. Bierema. An Interactive Introduction to Organismal and Molecular Biology, 2nd ed. by Andrea M.-K. Bierema is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.
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