Debra S. Baker and Donald G. Huggins Debra S. Baker and Donald G. Huggins C C P B Central Plains Center for BioAssessment Kansas Biological Survey, University of Kansas Nutrient Trends in Nutrient Trends in Reference Streams of the Reference Streams of the Central Plains Central Plains 30 th Annual Great Plains Limnology Conference, Lincoln, NE, 10 – 11 October 2003
Nutrient Trends in Reference Streams of the Central Plains. Debra S. Baker and Donald G. Huggins. Central Plains Center for BioAssessment. Kansas Biological Survey, University of Kansas. 30 th Annual Great Plains Limnology Conference, Lincoln, NE, 10 – 11 October 2003. Nutrients in Streams. - PowerPoint PPT Presentation
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Debra S. Baker and Donald G. HugginsDebra S. Baker and Donald G. Huggins
CC
P B
Central Plains Center for BioAssessmentKansas Biological Survey, University of Kansas
Nutrient Trends in Reference Nutrient Trends in Reference Streams of the Central PlainsStreams of the Central Plains
30th Annual Great Plains Limnology Conference, Lincoln, NE, 10 – 11 October 2003
Nutrients in Streams• Clean Water Action Plan 1998 - USEPA initiative to
establish regionally-based nutrient criteria for waterbodies via Regional Technical Assistance Groups (RTAGs).
• Develop a dataset of nutrient levels found in “reference” or least impacted streams of USEPA Region 7.
• Should criteria be single values for the entire EPA Region, or should criteria be based on a subset of stream characteristics, such as ecoregion?
Stream Sites
Parameters• in situ:
DO, turbidity, pH, conductivity
• Lab analysis:
TN, NH4-N, NO3-N,
TP, PO4-P,
chlorophyll a, phaeophytin a
Hypothesis• Streams will show affiliations based on some suite of
water quality characteristics (e.g. nutrient concentrations).
• Principal Components Analysis (PCA) was used to determine probable relationships among the parameters.
• Resulting factor scores were used as input for clustering analyses to identify stream groupings and compare resulting spatial differences to ecoregions.