Estuarine and Wetland Processes

Estuaries and Wetlands are important coastal resources which are subject to a great deal of environmental stress. Dredging, construction, creation of intertidal wetlands, regulation of fresh water flow, and pollution are just a few of the activities which affect these coastal systems. The need to predict the effects of these perturbations upon ecosystem dynamics, particularly estuarine fisheries, as well as on physical effects, such as sedimentation and salt intrusion, is of paramount importance. Prediction requires the use of models, but no model is likely to be satisfactory unless fundamental physical, chemical, sedimentological, and biological processes are quantitatively understood, and the appropriate time and space scales known. With these considerations in mind, the Environmental Laboratory, U. S. Army Engineer Haterways Experiment Station,* Vicksburg, Mississippi, sponsored a workshop on "Estuarine and Wetland Processes and Water Quality Modeling" held in New Orleans, June 1979. The contents of this volume have been selected from the workshop papers. The resulting book, perhaps more than any other symposium proceed ings on estuaries and wetlands, attempts to review important pro cesses and place them in a modeling context. There is also a distinct applied tinge to a number of the contributions since some of the research studies were motivated by environmental assessments. The difference in title between this volume and the workshop re flects more accurately the contents of the published papers.

Contenu
Turbulent Processes in Estuaries.- Observation and Modeling of the Circulation in the Chesapeake Bay.- The Transport of Freshwater Off a Multi-Inlet Coastline.- Box Models Revisited.- Numerical Hydrodynamics of Estuaries.- Evolution of a Numerical Model for Simulating Long-Period Wave Behavior in Ocean-Estuarine Systems.- Hydrography and Circulation Processes of Gulf Estuaries.- Predicting the Effects of Storm Surges and Abnormal River Flow on Flooding and Water Movement in Mobile Bay, Alabama.- Hydrodynamic Mass Transfer Model of Deltaic Systems.- Current Measurements and Mathematical Modeling in Southern Puget Sound.- The Role of Physical Modeling in the Mathematical Modeling of the Sacramento-San Joaquin Delta.- Modeling Sediment Transport in a Shallow Lake.- A Numerical Simulation of the Dispersion of Sediments Suspended by Estuarine Dredging Operations.- Short-Term Fluxes Through Major Outlets of the North Inlet Marsh in Terms of Adenosine 5?-Triphosphate.- Sources and Variability of Suspended Particulates and Organic Carbon in a Salt Marsh Estuary.- Tidal Wetlands and Estuarine Coliform Bacteria.- Rate of Sedimentation and Its Role in Nutrient Cycling in a Louisiana Salt Marsh.- An Infiltrometer to Measure Seepage in Salt Marsh Soils.- Quantitative Assessment of Emergent Spartina Alterniflora Biomass in Tidal Wetlands Using Remote Sensing.- Between Coastal Marshes and Coastal Waters A Review of Twenty Years of Speculation and Research on the Role of Salt Marshes in Estuarine Productivity and Water Chemistry.- Modeling Salt Marshes and Estuaries: Progress and Problems.- Simulation Modeling of Estuarine Ecosystems.- The Movements of a Marine Copepod in a Tidal Lagoon.- Estuarine Fishery Resources and Physical Estuarine Modifications: Some Suggestions forImpact Assessment.- Combined Field-Laboratory Method for Chronic Impact Detection in Marine Organisms and Its Application to Dredged Material Disposal.