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Sediment transport in coastal regions is regulated by the interaction of river discharge, wind, waves, and tides, yet the role of vegetation in this interaction is not well understood. Here, we evaluated these variables using multiple acoustic and optical sensors deployed for 30–60 days in spring and summer/fall 2015 at upstream and downstream stations in Mike Island, a deltaic island within the Wax Lake Delta, LA, USA. During a flooding stage, semidiurnal and diurnal tidal impact was minimal on an adjacent river channel, but significant in Mike Island where vegetation biomass was low and wave influence was greater downstream. During summer/fall, a “vegetated channel” constricted the water flow, decreasing current speeds from ~13 cm/s upstream to nearly zero downstream. Synchrony between the upstream and downstream water levels in spring (R2 = 0.91) decreased in summer/fall (R2 = 0.84) due to dense vegetation, which also reduced the wave heights from 3–20 cm (spring) to nearly 0 cm (summer/fall). Spatial and temporal differences in total inorganic nitrogen and orthophosphate concentrations in the overlying and sediment porewater were evident as result of vegetation growth and expansion during summer/fall. This study provides key hourly/daily data and information needed to improve the parameterization of biophysical models in coastal wetland restoration projects.
Courtney Elliton; Kehui Xu; Victor H. Rivera-Monroy. The Impact of Biophysical Processes on Sediment Transport in the Wax Lake Delta (Louisiana, USA). Water 2020, 12, 2072 .
AMA StyleCourtney Elliton, Kehui Xu, Victor H. Rivera-Monroy. The Impact of Biophysical Processes on Sediment Transport in the Wax Lake Delta (Louisiana, USA). Water. 2020; 12 (7):2072.
Chicago/Turabian StyleCourtney Elliton; Kehui Xu; Victor H. Rivera-Monroy. 2020. "The Impact of Biophysical Processes on Sediment Transport in the Wax Lake Delta (Louisiana, USA)." Water 12, no. 7: 2072.
Coastal Louisiana hosts 37% of the coastal wetland area in the conterminous US, including one of the deltaic coastal regions more susceptible to the synergy of human and natural impacts causing wetland loss. As a result of the construction of flood protection infrastructure, dredging of channels across wetlands for oil/gas exploration and maritime transport activities, coastal Louisiana has lost approximately 4900 km2 of wetland area since the early 1930s. Despite the economic relevance of both wetland biomass and net primary productivity (NPP) as ecosystem services, there is a lack of vegetation simulation models to forecast the trends of those functional attributes at the landscape level as hydrological restoration projects are implemented. Here, we review the availability of peer-reviewed biomass and NPP wetland data (below and aboveground) published during the period 1976–2015 for use in the development, calibration and validation of high spatial resolution (
Victor H. Rivera-Monroy; Courtney Elliton; Siddhartha Narra; Ehab Meselhe; Xiaochen Zhao; Eric White; Charles E. Sasser; Jenneke M. Visser; Xuelian Meng; Hongqing Wang; Zuo Xue; Fernando Jaramillo; Rivera- Monroy; Zhao; Meng; Wang; Xue. Wetland Biomass and Productivity in Coastal Louisiana: Base Line Data (1976–2015) and Knowledge Gaps for the Development of Spatially Explicit Models for Ecosystem Restoration and Rehabilitation Initiatives. Water 2019, 11, 2054 .
AMA StyleVictor H. Rivera-Monroy, Courtney Elliton, Siddhartha Narra, Ehab Meselhe, Xiaochen Zhao, Eric White, Charles E. Sasser, Jenneke M. Visser, Xuelian Meng, Hongqing Wang, Zuo Xue, Fernando Jaramillo, Rivera- Monroy, Zhao, Meng, Wang, Xue. Wetland Biomass and Productivity in Coastal Louisiana: Base Line Data (1976–2015) and Knowledge Gaps for the Development of Spatially Explicit Models for Ecosystem Restoration and Rehabilitation Initiatives. Water. 2019; 11 (10):2054.
Chicago/Turabian StyleVictor H. Rivera-Monroy; Courtney Elliton; Siddhartha Narra; Ehab Meselhe; Xiaochen Zhao; Eric White; Charles E. Sasser; Jenneke M. Visser; Xuelian Meng; Hongqing Wang; Zuo Xue; Fernando Jaramillo; Rivera- Monroy; Zhao; Meng; Wang; Xue. 2019. "Wetland Biomass and Productivity in Coastal Louisiana: Base Line Data (1976–2015) and Knowledge Gaps for the Development of Spatially Explicit Models for Ecosystem Restoration and Rehabilitation Initiatives." Water 11, no. 10: 2054.