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Image of two women inspecting a creature with text reading, "CFAES" and "STONE LAB"

Plants and animals can serve as indicators of ecosystem health. Sometimes the smallest organisms are the biggest indicators of water quality. Benthic macroinvertebrates, small aquatic animals or larval forms of insects, do not have a backbone and are bottom-dwelling organisms. Because macroinvertebrates spend their entire lives in a small area, they often show the effects of environmental changes. The species and number of benthic macroinvertebrates in a habitat are indicators of the health of an aquatic ecosystem. Some macroinvertebrates are more sensitive to pollution than others; finding many of these species typically indicates better water quality. In this lesson, students will “collect” common benthic macroinvertebrates and then analyze quantitative data to determine the health of a variety of aquatic ecosystems.

Upon completion of this virtual field trip module, you will earn a contact hour certificate documenting 5 contact hours.

What You’ll Learn

  • List basic characteristics of and identify common benthic macroinvertebrates
  • Describe how to collect and sort benthic macroinvertebrates to assess water quality
  • Explain how and why benthic macroinvertebrates serve as biotic indicators of aquatic ecosystem health

What You’ll Earn

  • A contact hour certificate documenting 5 contact hours from The Ohio State University

Additional Information

Grade Levels: 6–12 Life Science / Environmental Science
Alignment: Ohio’s Learning Standards, Next Generation Science Standards (NGSS)

Contact Us

For questions about enrollment, payment options, technology support, or course records, please contact our Enrollment Support team. Inquiries are typically answered within 24 business hours.

Submit an enrollment inquiry

If you have questions about this course, please email Jill Bartolotta.

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