Ben Bond GEOG 596A Introduction Importance Background About Lake Erie Assessment Methods Study Area Goals and Objectives Methods Workflow IBI Calculation Delineation Expected Results Implications Timeline Introduction Intrinsic Value Economic Value Limited Capacity Western Basin of Lake Erie Historic Problems with Algal Blooms Increased Blooms in Recent History Water Processing Ecological Shift Watershed Assessment Health Metrics Chemistry Short Term Biological Long Term Ohio Bioassessment Very well supported Large Database, records since 1974 Extremely well supported Ohio Credible data program Study Area Maumee River Basin Largest Watershed in Great Lakes Major Contributor to Lake Erie Land Cover Dominantly Agriculture Fertile land from Great Black Swamp Limited Riparian Vegetation Goals and Objectives Goal to support management efforts and to preserve freshwater in the Western Basin of Lake Erie Objectives Quantifying watershed health Analyzing land use within sample site zones Performing multivariate analysis to determine impact of land use on IBI ratings Methods Delineate Catchment Basins and buffer zones Calculate IBI values Summarize land use according to each sample point extraction zones Analyze data Workflow Sample Points 20 Years 10 Years Bigger IBI Calculation Calculated according to 12 Ohio EPA metrics Ranked on a score of Attainment classes Catchment Basin All water flowing into sample point across landscape Calculated based on DEM processing Add streams NHDplus DEM FDR & FAC Analysis Determine impact of land use within catchment basin compared to local land use Cluster analysis examining IBI grouping Expected Results Decreasing watershed health with increasing agriculture Recovery near Lake Erie Impact of local land use greater in low flow areas Implications Further Research Quantitative value Policy change Preservation of Lake Erie Timeline Acknowledgements Joe Bishop Nate Tessler Molly Morris and the Morris Lab Kristina Bond Questions? 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