State Water Resources Research Institute Program

Project ID: 2009KY124B
Title: Elemental flow through food webs in restored and reference stream reaches
Project Type: Research
Start Date: 3/01/2009
End Date: 2/28/2010
Congressional District: KY 2nd
Focus Categories: Surface Water, Water Quality, Ecology
Keywords: stream restoration, food webs, macroinvertibrates, secondary production
Principal Investigator: Jin, Hwa-Seong (University of Louisville)
Federal Funds: $ 4,976
Non-Federal Matching Funds: $ 9,995
Abstract: We propose a novel post-monitoring analysis of a stream restoration project by comparing flows of carbon (C), nitrogen (N), and phosphorus (P) through stream invertebrate food webs in the restored and reference streams. To accomplish this, we will quantify stream invertebrate community structure and secondary production in both the reference and restored reaches. We will then use secondary production estimates for each taxon and gut content analysis data to quantify food web linkages in the reference and restored streams using the trophic basis of production (Benke and Wallace 1980, 1997). Finally, we will use consumer-resource stoichiometric data to determine the flows of C, N, and P through the food webs in the reference and restored reaches. This analysis will allow not only the assessment of the restoration project based on invertebrate community composition and food web structure (i.e. a structural component), but also place this information in an ecosystem-level context by addressing elemental flows through each food web: ultimately providing a more holistic view of stream ecosystem structure and function.

Progress/Completion Report, 2009, PDF

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