Resistance of salt marsh substrates to near‐instantaneous hydrodynamic forcing

Brooks, Helen, Möller, Iris, Carr, Simon, Chirol, Clementine, Christie, Elizabeth, Evans, Ben, Spencer, Kate L., Spencer, Tom and Royse, Katherine (2020) Resistance of salt marsh substrates to near‐instantaneous hydrodynamic forcing. Earth Surface Processes and Landforms .

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Official URL: https://doi.org/10.1002/esp.4912

Abstract

Abstract
Salt marshes deliver vital ecosystem services by providing habitats, storing pollutants and atmospheric carbon, and reducing flood and erosion risk in the coastal hinterland. Net losses in salt marsh area, both modelled globally and measured regionally, are therefore of concern. Amongst other controls, the persistence of salt marshes in any one location depends on the ability of their substrates to resist hydrodynamic forcing at the marsh front, along creek margins and on the vegetated surface. Where relative sea‐level is rising, marsh elevation must keep pace with sea‐level rise and landward expansion may be required to compensate for areal loss at exposed margins. This paper reviews current understanding of marsh substrate resistance to the near‐instantaneous (seconds to hours) forcing induced by hydrodynamic processes. It outlines how variability in substrate properties may affect marsh substrate stability, explores current understanding of the interactions between substrate properties and erosion processes and how the cumulative impact of these interactions may affect marsh stability over annual to decadal timescales.

Item Type: Article
Journal / Publication Title: Earth Surface Processes and Landforms
ISSN: 0197-9337
Departments: Pre June 2020 Academic Departments and Services > Academic Departments > Science, Natural Resources & Outdoor Studies (SNROS) > Outdoor Studies
Depositing User: Christian Stretton
Date Deposited: 04 Jun 2020 14:13
Last Modified: 22 Aug 2020 08:00
URI: https://insight.cumbria.ac.uk/id/eprint/5561

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