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Nature-based shore protection to stabilize estuarine sediment



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  • Personal Author:
  • Corporate Authors:
    University of New Hampshire. Sea Grant Program.
  • NOAA Program & Office:
  • Sea Grant Program:
    NHU (New Hampshire Sea Grant)
  • Description:
    A location of estuarine shoreline between the mouths of the Lamprey and Squamscott Rivers in Great Bay, New Hampshire has experienced extensive erosion. In addition to the erosion, this location is also subject to discharge from the wastewater treatment plant up each of the surrounding rivers. The goal of this study is to investigate the potential of using oyster aquaculture gear to reduce shoreline erosion while assimilating nitrogen, a primary component in the effluent from the Newmarket Wastewater Treatment Plant. Through the determination of on-site conditions and prior aquaculture research, we were able to develop a methodology to quantify current and energy dissipation, as well as the assimilative properties of oysters grown within aquaculture structures. With a set of tow and wave tank tests, current velocity and wave energy reduction was measured to be 374.23 J/m 2 and 21.27 J/m 2 , respectively, for the maximum experimental conditions. Bio-assimilation calculations yielded that it would require a total of 1.6 million oysters to sequester the average total nitrogen released by the Newmarket Wastewater Treatment Plant in one year. This research has promising potential to provide the groundwork for further investigation into the positive effects of oyster aquaculture; with regard to both the preservation of estuarine shoreline, as well as an oyster’s ability to assimilate pollutants such as nitrogen, phosphorus, and carbon.
  • Keywords:
  • Format:
    pdf
  • Document Type:
    Non-series Report
  • Place as Subject:
    Great Bay (N.H.)
  • License:
  • Rights Information:
    CC0 Public Domain
  • Compliance:
    Submitted
  • Main Document Checksum:
    urn:sha-512:68d455e6699f0293df773d6da5a3bbf07be66da7f0c421c837f837a1f7cfd6e86c562147ce3f8d770237f7242aeb57291263294386685b5cce2d043a19f7e6b4
  • Download URL:
  • File Type:
    Filetype[PDF - 20.50 MB ]
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