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Rocky River Watershed. Is this watershed healthy or unhealthy? If it is unhealthy, what are the main impairments?. By: Laura Hagy, Lydia Gray, and Elizabeth Chiu. Rocky River Facts. Lorain, Medina, Summit, and Cuyahoga counties (near Cleveland) Primary Uses

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rocky river watershed

Rocky River Watershed

Is this watershed healthy or unhealthy? If it is unhealthy, what are the main impairments?

By: Laura Hagy, Lydia Gray, and Elizabeth Chiu

rocky river facts
Rocky River Facts
  • Lorain, Medina, Summit,
  • and Cuyahoga counties
  • (near Cleveland)
  • Primary Uses
    • Cleveland-Hopkins International Airport
    • Golf Courses
    • Urban/Farming/Forest
  • Main impairment: Nutrient Enrichment
elizabeth s hypothesis
Elizabeth’s Hypothesis

My hypothesis is that when the DO (Dissolved Oxygen) in the Rocky River increases, the IBI (Index of Biotic Integrity) also increases.

elizabeth s conclusion
Elizabeth’s Conclusion
  • Data mostly supports hypothesis
  • When DO increases, IBI increases
  • Dissolved oxygen affects fish because they need oxygen to breathe
  • Dissolved oxygen comes from temperature or riffles
  • Algae can reduce oxygen levels
lydia s hypothesis
Lydia’s Hypothesis

As the QHEI (Qualitative Habitat Evaluation Index) increases the IBI (Index of Biotic Integrity) will increase at the same rate.

lydia s conclusion
Lydia’s Conclusion

My Hypothesis:

As the QHEI increases the IBI will increase at the same rate.

When a river has a rocky bottom, and lots of trees around it, you have happy fish, because:

  • Rocky bottom is breeding ground for fish and macroinvertebrates.
  • Trees keep pollutants and runoff from river.
  • Trees keep river cool= more oxygen.
laura s hypothesis

When the health of the substrate increases the ICI or macroinvertebrate community increases in numbers also.

Laura’s Hypothesis

laura s conclusion
Laura’s Conclusion
  • Data supports hypothesis
  • Substrate increases, macroinvertebrates increase
  • Substrate helps macroinvertebrates
  • Sediments and silt reduce health of substrate
acknowledgements
Acknowledgements

A great thanks to:

  • Paula, Shannon, Steve, Leslie, and both Katies
  • Kim and Megan
  • OSC,OSU, and YWSI
  • Our sponsors AEP, Battelle, P&G, and White Castle
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