CONTENTS 



Page 



PREFACE iu 



CONVERSION TABLE iv 



ACKNOWLEDGMENTS vii 



The Geological History of the Marshes of Coastal Louisiana, 



R. LeBlanc 1 



Processes of Wetland Erosion in the Mississippi River Deltaic Plain, 



S. Gagliano and K. Wicker 28 



Accreting Mudflats at the Mississippi River Delta: Sedimentation 



Rates and Vascular Plant Succession, D. White 49 



Soils of Louisiana's Coastal Marsh, K. Murphy 58 



Modeling Sediment Delivery to Louisiana Coastal Salt Marshes: 



Natural Processes and Options for Management, D. Reed 67 



Response of Louisiana Gulf Coast Marshes to Saltwater Intrusion 



R. Pezeshki, R. DeLaune, W. Patrick, Jr., and B. Good 75 



The Effect of Drying and Electrical Conductivity on Urease Activity 



in a Brackish Marsh, G. Sigua and W. Hudnall 86 



Research and Policy Issues Regarding Coastal Wetland Impoundments: 



Lessons Learned in South Carolina, M. DeVoe and D. Baughman 98 



Regulatory Procedures Impact Landowners' Management Programs, 



A Ensminger 107 



Marsh Impoundments for the Management of Wildlife and Plants in 



Louisiana, R. Chabreck and G. Junkin 112 



Vegetation and Salinity Changes Following the Installation of a Fixed Crest 



Weir at Avery Island, Louisiana (1982-86), B. Craft and D. Kleinpeter 120 



Comparisons of Salinity, Hydrology, and Vegetation Characteristics Between 



Free-Flowing and Semi-Impounded Intermediate-to-Brackish Tidal Marsh 



Systems, J. Meeder 131 



The Effects of Weirs on Plants and Wildlife in the Coastal 



Marshes of Louisiana, R. Chabreck and J. Nyman 142 



Weirs and Their Effects in Coastal Louisiana Wetlands (Exclusive of Fisheries), 



R. Turner, J. Day, and J. Gosselink 151 



Effects of Drawdown and Water Management on a Seriously Eroded 



Marsh, B. Lehto and J. Murphy 164 



A Comparison of White Shrimp Production Within Actively Versus Passively 



Managed Semi-Impounded Marsh Nurseries, R. Paille, T. Hess, Jr., 



R. Moertle, and K. Guidry 170 



Marsh Management and Fisheries on the State Wildlife Refuge- 

 Overview and Beginning Study of the Effect of Weirs, 



M. Konikoff and H. Hoese 181 



Threats to Coastal Fisheries, W. Herke and B. Rogers 1% 



