Thin layer placement of sediments for restoring ecological function to submerging salt marshes : a quantitative review of scientific literature

PURPOSE: The inundation of salt marshes, due in part to sea level rise, can result in elevation loss and a corresponding reduction in marsh ecological function. Several small-scale marsh restoration pilot projects have involved the addition of a thin layer of sediment to offset excessive inundation caused by loss of salt marsh elevation and resulting submergence. However, a comprehensive review, as well as a synthesis of project designs and the effects of sediment additions on ecological function, is lacking. This technical note reviews the impacts of thin layer placement of sediment on salt marsh ecological function and will serve as a resource for salt marsh restoration projects utilizing thin layer placement of sediments.

[1]  Timothy L. Welp,et al.  Thin layer placement : technical definition for U.S. Army Corps of Engineers applications , 2019 .

[2]  J. Berkowitz,et al.  Restoring a degraded marsh using thin layer sediment placement: Short term effects on soil physical and biogeochemical properties , 2018, Ecological Engineering.

[3]  M. Kirwan,et al.  Tidal wetland stability in the face of human impacts and sea-level rise , 2013, Nature.

[4]  Brady Couvillion,et al.  Marsh Collapse Thresholds for Coastal Louisiana Estimated Using Elevation and Vegetation Index Data , 2013 .

[5]  G. Snedden,et al.  Predictive occurrence models for coastal wetland plant communities: delineating hydrologic response surfaces with multinomial logistic regression , 2013 .

[6]  I. Mendelssohn,et al.  Functional assessment of differential sediment slurry applications in a deteriorating brackish marsh , 2013 .

[7]  I. Mendelssohn,et al.  Salt marsh restoration with sediment-slurry application: Effects on benthic macroinvertebrates and associated soil–plant variables , 2013 .

[8]  I. Mendelssohn,et al.  Controls on resilience and stability in a sediment-subsidized salt marsh. , 2011, Ecological applications : a publication of the Ecological Society of America.

[9]  I. Mendelssohn,et al.  Restoring Ecological Function to a Submerged Salt Marsh , 2010 .

[10]  T. Clough.  Biogeochemistry of Wetlands, Science and Applications , 2009 .

[11]  Simon M. Mudd,et al.  Impact of dynamic feedbacks between sedimentation, sea-level rise, and biomass production on near-surface marsh stratigraphy and carbon accumulation , 2009 .

[12]  Bryan P. Piazza,et al.  Short- and Long-Term Response of Deteriorating Brackish Marshes and Open-Water Ponds to Sediment Enhancement by Thin-Layer Dredge Disposal , 2009 .

[13]  I. Mendelssohn,et al.  Salt marsh restoration with sediment-slurry amendments following a drought-induced large-scale disturbance , 2008, Wetlands.

[14]  Jon French,et al.  Tidal marsh sedimentation and resilience to environmental change: Exploratory modelling of tidal, sea-level and sediment supply forcing in predominantly allochthonous systems , 2006 .

[15]  M. Posey,et al.  The effects of thin layer sand renourishment on tidal marsh processes: Masonboro Island, North Carolina , 2006 .

[16]  I. Mendelssohn,et al.  Effects of sediment slurry enrichment on salt marsh rehabilitation: Plant and soil responses over seven years , 2005 .

[17]  I. Mendelssohn,et al.  Sediment subsidy: effects on soil–plant responses in a rapidly submerging coastal salt marsh , 2003 .

[18]  W. Catallo.  Hourly and Daily Variation of Sediment Redox Potential in Tidal Wetland Sediments. , 1999 .

[19]  D. Cahoon,et al.  Restoring marsh elevation in a rapidly subsiding salt marsh by thin-layer deposition of dredged material , 1999 .

[20]  P. Wilber.  Thin-layer disposal : concepts and terminology , 1992 .

[21]  I. Mendelssohn,et al.  Mechanism for the hydrogen sulfide‐induced growth limitation in wetland macrophytes , 1990 .

[22]  I. Mendelssohn,et al.  SPARTINA ALTERNIFLORA DIE-BACK IN LOUISIANA: TIME-COURSE INVESTIGATION OF SOIL WATERLOGGING EFFECTS , 1988 .

[23]  M. Hardisky,et al.  The Effects of Smothering a 'Spartina alterniflora' Salt Marsh with Dredged Material. , 1978 .

[24]  Alfred C. Redfield,et al.  Development of a New England Salt Marsh , 1972 .

[25]  S. Gill,et al.  Implementation of procedures for computation of tidal datums in areas with anomalous trends in relative mean sea level / Stephen Gill Gerald Hovis Kelly Kriner Michael Michalski , 2014 .

[26]  M. Kirwan,et al.  On the Relationship Between Sea Level and Spartina alterniflora Production , 2011, Ecosystems.

[27]  Sonia Silvestri,et al.  Tidal regime, salinity and salt marsh plant zonation , 2005 .

[28]  J. H. Cowan,et al.  Environmental impacts and regulatory policy Implications of spray disposal of dredged material in Louisiana wetlands , 1988 .