Abstract
High rates of wetland loss in the Mississippi deltaic plain have been attributed to a combination of insufficient marsh sedimentation and relative sea-level rise rates of over 1.2 cm yr−1. This study examines contemporary patterns of sediment delivery to the marsh surface by evaluating the contribution of individual marsh flooding events. Strong meteorological effects on water level in Terrebonne Bay often mask the usual microtidal fluctuations in water level and cause flood events to be of unpredictable frequency and duration. Sediment deposited on the marsh surface was collected weekly at two sites. Preliminary results allow the relative contributions of tidal and storm inundations to be calculated. Maximum sedimentation is associated with strong southerly winds both causing increased flooding and mobilizing sediment from open bay areas. Sediment deposition is limited by the availability of suspended sediment and the opportunity for its transport onto the marsh surface.
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Literature Cited
Baumann, R. H.. 1980. Mechanisms of maintaining marsh elevation in a subsiding environment. M.S. Thesis, Louisiana State Univ., Baton Rouge, Louisiana. 91 p.
Boesch, D. F. 1982. Proc. Conference on Coastal Erosion and Wetland Modification in Louisiana: Causes, Consequences and Options. U.S. Fish and Wildllife Service, Biological Services Program, Washington, D.C. FWS/OBS-82/59. 256 p.
Cahoon, D. R., and R. E. Turner. 1987. Marsh accretion, mineral sediment deposition and organic matter accumulation: Clay marker horizon technique, p. 259–275. Chapter 15.In R. E. Turner and D. R. Cahoon (eds.), Causes of Wetland Loss on the Coastal Central Gulf of Mexico. Vol. 2. Technical Narrative, Final Rep. submitted to Minerals Management Service, New Orleans, Louisiana. OCS study/MMS87-0120.
DeLaune, R. D., W. H. Patrick, andR. J. Buresh. 1978. Sedimentation rates determined by137Cs dating in a rapidly accreting salt marsh.Nature 275:532–533.
DeLaune, R. D., C. J. Smith, andW. H. Patrick. 1986. Sedimentation patterns in a Gulf Coast backbarrier marsh: Response to increasing submergence.Earth Surface Processes Landforms 11:485–490.
DeLaune, R. D., J. H. Whitcombe, and W. H. Patrick. 1987. Marsh accretion, mineral sediment deposition, and organic matter accumulation:137Cs and210Pb techniques, p. 245–257. Chapter 14.In R. E. Turner and D. R. Cahoon (eds.), Causes of Wetland Loss on the Coastal Central Gulf of Mexico. Vol. 2. Technical Narrative. Final Rep. submitted to Minerals Management Service, New Orleans, Louisiana. OCS study/MMS87-0120.
Gagliano, S. M., K. J. Meyer-Arendt, andK. Wicker. 1981. Land loss in the Mississippi River deltaic plain. Trans.Gulf Coast Assoc. Geol. Soc. 31:295–300.
Gleason, M. L., D. A. Elmer, N. C. Pien, andJ. S. Fisher. 1979. Effects of stem density upon sediment retention by salt marsh cord grass,Spartina alterniflora Loise.Estuaries 2:271–273.
Hatton, R. S., R. D. DeLaune, andW. H. Patrick. 1983. Sedimentation, accretion and subsidence in marshes of Barataria Basin, Louisiana.Limnol. Oceanogr. 28:494–502.
Meeder, J. 1987. Variable effects of hurricanes on the coast and adjacent marshes: A problem for marsh managers, p. 337–374.In N. V. Brodtmann (ed.). Proc. Fourth Water Quality and Wetlands Management Conference, New Orleans, Louisiana.
National Oceanic, Atmospheric Administration. 1987. Storm data for March 1987. National Climatic Data Center, Asheville, North Carolina. 40 p.
Penland, S., J. R. Suter, andR. Boyd. 1985. Barrier island arcs along abandoned Mississippi River deltas.Mar. Geol. 63: 197–233.
Penland, S., J. R. Suter, andR. A. McBride. 1987. Delta plain development and sea level history in Terrebonne coastal region, Louisiana, p. 1689–1706.In N. C. Krause (ed.), ’87. American Society of Civil Engineers, New York.
Penland, S., K. E. Ramsey, R. A. McBride, J. T. Mestayer, andK. A. Westphal. 1987. Relative sea level rise, delta plain development subsidence, and wetland sedimentation in the Teche and Lafourche delta complexes: Terrebonne Parish region, Louisiana. Coastal Geology Bull. No. 2, Louisiana Geological Survey, Baton Rouge, Louisiana. 130 p.
Roberts, H. H., O. K. Huh, S. A. Hsu, L. J. Rouse, andD. Rickman. 1987. Impact of cold-front passages on geomorphic evolution and sediment dynamics of the complex Louisiana coast, p. 1950–1963.In N. C. Krause (ed.), Coastal Sediments ’87. American Society of Civil Engineers, New York.
Salinas, L. M., R. D. DeLaune, andW. H. Patrick. 1986. Changes occurring along a rapidly submerging coastal area: Louisiana, USA.J. Coastal Res. 2:269–284.
Sasser, C. E., M. D. Dozier, J. G. Gosselink, andJ. M. Hill. 1986. Spatial and temporal changes in Louisiana’s Barataria Basin marshes, 1945–1980.Environ. Management 10:671–680.
Walker, H. J., J. M. Coleman, H. H. Roberts, andR. S. Tye. 1987. Wetland loss in Louisiana.Geog. Annal. Ser. A Phys. Geog. 69A:189–200.
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Reed, D.J. Patterns of sediment deposition in subsiding coastal salt marshes, Terrebonne Bay, Louisiana: The role of winter storms. Estuaries 12, 222–227 (1989). https://doi.org/10.2307/1351901
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DOI: https://doi.org/10.2307/1351901