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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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