US Army Corps of Engineers
Portland District

Hydrogeoporphic functions and habitat functions of tidal wetlands

Semi-quantitative models developed for tidal fringe wetlands. These models are available in a report by Shafer and Yozzo (1998).

  • Tidal surge attenuation: the capacity of a wetland to reduce the amplitude of storm surges.
  • Tidal nutrient and organic carbon exchange: the ability of a wetland to import and export nutrients and organic carbon.
  • Sediment deposition: deposition and retention of inorganic and organic particulates from the water column.
  • Maintenance of characteristic plant community composition and structure: a wetland's ability to support a native plant community of characteristic species composition and structure.
  • Resident nekton utilization: describes potential utilization of the wetland by resident fishes and macrocrustaceans.
  • Nonresident nekton utilization: describes potential utilization of the wetland by resident fishes and macrocrustaceans.
  • Nekton prey pool: describes potential of a wetland to produce and maintain a characteristic benthic and epibenthic invertebrate prey pool.
  • Wildlife habitat utilization: describes potential use of the wetland by resident and migratory avifauna, reptiles, amphibians and mammals.

Contact information

Ronald Thom, Ph.D
360-681-3657

Marine Research Operations, PNNL
1529 W. Sequim Bay Rd.
Sequim, WA 98382