Dethier et al 2016 impacts of armoring

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Megan N. Dethier, Wendel W. Raymond, Aundrea N. McBride, Jason D. Toft, Jeffery R. Cordell, Andrea S. Ogston, Sarah M. Heerhartz, Helen D. Berry, Multiscale impacts of armoring on Salish Sea shorelines: Evidence for cumulative and threshold effects, Estuarine, Coastal and Shelf Science, Volume 175, 20 June 2016, Pages 106-117, ISSN 0272-7714,


  • Logs, wrack, and high-shore invertebrates decline with shoreline armoring.
  • Armoring emplaced further down the beach face has progressively greater impacts.
  • Documented threshold responses with elevation are relevant for habitat managers.
  • In drift cells with extensive armoring, beaches have coarser sediment.
  • Detection of geomorphic beach changes requires large spatial scales of observation.