Event Title

Measuring Success of Riparian Buffer and Stream Structure Installation

Presenter Information

Haley Miller, Susquehanna University

Faculty Advisor

Dr. Daniel Ressler

Start Date

23-4-2019 12:00 PM

End Date

23-4-2019 1:00 PM

Description

Riparian buffers serve many environmental roles, one being to reduce the rate of erosion and sedimentation within a stream. Stream sediment grain sizes have a large effect on the diversity and density of macroinvertebrate populations. Stream sediment and macroinvertebrate samples were collected from farm streams throughout Clinton and Centre counties in the summers of 2017 and 2018, with the Elk Creek site having data pre- and post- stream restoration.The macroinvertebrate metrics were percentage of Ephemeroptera, Plecoptera, and Trichoptera (%EPT) and Hilsenhoff biotic index. The sediment characteristics measured were C:N ratio, organic matter content, grain size, and percent fine earth. A Mann-Whitney U test performed on the sediment results between each year showed significant improvements following restoration. Correlations between the macroinvertebrate metrics and sediment results show a statistically significant relationship between macroinvertebrate populations and grain size. Larger stream sediment particles correlate with a higher %EPT and a lower Hilsenhoff score.

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Apr 23rd, 12:00 PM Apr 23rd, 1:00 PM

Measuring Success of Riparian Buffer and Stream Structure Installation

Riparian buffers serve many environmental roles, one being to reduce the rate of erosion and sedimentation within a stream. Stream sediment grain sizes have a large effect on the diversity and density of macroinvertebrate populations. Stream sediment and macroinvertebrate samples were collected from farm streams throughout Clinton and Centre counties in the summers of 2017 and 2018, with the Elk Creek site having data pre- and post- stream restoration.The macroinvertebrate metrics were percentage of Ephemeroptera, Plecoptera, and Trichoptera (%EPT) and Hilsenhoff biotic index. The sediment characteristics measured were C:N ratio, organic matter content, grain size, and percent fine earth. A Mann-Whitney U test performed on the sediment results between each year showed significant improvements following restoration. Correlations between the macroinvertebrate metrics and sediment results show a statistically significant relationship between macroinvertebrate populations and grain size. Larger stream sediment particles correlate with a higher %EPT and a lower Hilsenhoff score.