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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 - PowerPoint PPT Presentation
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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 FACTSLorain, Medina, Summit, and Cuyahoga counties (near Cleveland)Primary UsesCleveland-Hopkins International Airport
Golf CoursesUrban/Farming/Forest
Main impairment: Nutrient Enrichment
MAIN THREATS
Population Growth
Waste Water Treatment
Storm Water Runoff
Development in Riparian Zone
Non –point source
Pollution
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.
DO VS. IBI DATA1 4 7
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28
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AvIBIAv_DO
Av.I
BI
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DO
ELIZABETH’S CONCLUSIONData mostly supports hypothesisWhen DO increases, IBI increasesDissolved oxygen affects fish because they need oxygen to breathe Dissolved oxygen comes from temperature or rifflesAlgae can reduce oxygen levels
LYDIA’S HYPOTHESIS As the QHEI (Qualitative Habitat
Evaluation Index) increases the IBI (Index of Biotic Integrity) will increase at the same rate.
1 3 5 7 911
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AvIBI
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QHEI vs. IBI
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 HYPOTHESISWhen the health of the substrate increases the ICI or macroinvertebrate community increases in numbers also.
LAURA’S DATA ANALYSIS
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MxSUBSTRATEMxICI
Mx.
Su
bstr
ate
Mx.
ICI
LAURA’S CONCLUSIONData supports hypothesisSubstrate increases,
macroinvertebrates increaseSubstrate helps
macroinvertebratesSediments and silt reduce health
of substrate
ACKNOWLEDGEMENTS
A great thanks to: Paula, Shannon, Steve, Leslie, and
both Katies Kim and Megan OSC,OSU, and YWSIOur sponsors AEP, Battelle, P&G,
and White Castle
