On the morphodynamic stability of intertidal environments and the role of vegetation


Journal Article

© 2015 Elsevier Ltd. We describe the coupled biotic and abiotic dynamics in intertidal environments using a point model that includes suspended sediment deposition, wave- and current-driven erosion, biofilm sediment stabilization, and sediment production and stabilization by vegetation. We explore the effects of two widely different types of vegetation: salt-marsh vegetation and mangroves. These two types of vegetation, which colonize distinct geographical areas, are characterized by different biomass productivities and stabilization mechanisms. We show that changing vegetation and biofilm properties result in differing stable states, both in their type and number. The presence of the biofilm exerts a dominant control on the tidal flat (lower intertidal) equilibrium elevation and stability. Vegetation controls the elevation of the marsh platform (i.e., the upper intertidal equilibrium). The two types of vegetation considered lead to similar effects on the stability of the system despite their distinct biophysical interactions.

Full Text

Duke Authors

Cited Authors

  • Kakeh, N; Coco, G; Marani, M

Published Date

  • July 1, 2016

Published In

Volume / Issue

  • 93 /

Start / End Page

  • 303 - 314

International Standard Serial Number (ISSN)

  • 0309-1708

Digital Object Identifier (DOI)

  • 10.1016/j.advwatres.2015.11.003

Citation Source

  • Scopus