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Full-Text Articles in Physical Sciences and Mathematics
Short-Term Effect Of Simulated Salt Marsh Restoration By Sand-Amendment On Sediment Bacterial Communities, François Thomas, James T. Morris, Cathleen Wigand, Stefan M. Sievert
Short-Term Effect Of Simulated Salt Marsh Restoration By Sand-Amendment On Sediment Bacterial Communities, François Thomas, James T. Morris, Cathleen Wigand, Stefan M. Sievert
Faculty Publications
Coastal climate adaptation strategies are needed to build salt marsh resiliency and maintain critical ecosystem services in response to impacts caused by climate change. Although resident microbial communities perform crucial biogeochemical cycles for salt marsh functioning, their response to restoration practices is still understudied. One promising restoration strategy is the placement of sand or sediment onto the marsh platform to increase marsh resiliency. A previous study examined the above- and below-ground structure, soil carbon dioxide emissions, and pore water constituents in Spartina alterniflora-vegetated natural marsh sediments and sand-amended sediments at varying inundation regimes. Here, we analyzed samples from the …
Sediment Transport By Dry Ravel, Emmanuel Gabet
Sediment Transport By Dry Ravel, Emmanuel Gabet
Faculty Publications
Dry ravel is a general term that describes the rolling, bouncing, and sliding of individual particles down a slope and is a dominant hillslope sediment transport process in steep arid and semiarid landscapes. During fires, particles can be mobilized by the collapse of sediment wedges that have accumulated behind vegetation. On a daily basis, particles may be mobilized by bioturbation and by small landslides. Experiments on a dry ravel flume indicate that a basic expression of the momentum equation predicts the distance traveled by particles propelled down a rough surface. This equation is further elaborated to produce a nonlinear slope-dependent …