Search Results - "MacWilliams, Michael"

Tidal migration and retention of estuarine zooplankton investigated using a particle-tracking model by Kimmerer, Wim J., Gross, Edward S., MacWilliams, Michael L.

“…We used hydrodynamic and particle-tracking models to investigate vertical movement of plankton and resulting retention in the San Francisco Estuary. The…”
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Simulating sediment transport processes in San Pablo Bay using coupled hydrodynamic, wave, and sediment transport models by Bever, Aaron J., MacWilliams, Michael L.

“…San Pablo Bay is a tidal sub-embayment of the San Francisco Estuary which is dominated by broad shallow shoals bisected by a deep channel. Under the conceptual…”
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Influence of an Observed Decadal Decline in Wind Speed on Turbidity in the San Francisco Estuary by Bever, Aaron J., MacWilliams, Michael L., Fullerton, David K.

“…Turbidity is an important habitat component in estuaries for many fishes and affects a range of other ecological functions. Decadal timescale declines in…”
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Flow convergence routing hypothesis for pool-riffle maintenance in alluvial rivers by MacWilliams Jr, Michael L., Wheaton, Joseph M., Pasternack, Gregory B., Street, Robert L., Kitanidis, Peter K.

“…The velocity reversal hypothesis is commonly cited as a mechanism for the maintenance of pool‐riffle morphology. Although this hypothesis is based on the…”
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Evaluation of a large-scale flow manipulation to the upper San Francisco Estuary: Response of habitat conditions for an endangered native fish by Sommer, Ted, Hartman, Rosemary, Koller, Michal, Koohafkan, Michael, Conrad, J. Louise, MacWilliams, Michael, Bever, Aaron, Burdi, Christina, Hennessy, April, Beakes, Michael

“…While flow is known to be a major driver of estuarine ecosystems, targeted flow manipulations are rare because tidal systems are extremely variable in space…”
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Factors influencing the calculation of periodic secondary circulation in a tidal river: numerical modelling of the lower Sacramento River, USA by Bever, Aaron J., MacWilliams, Michael L.

“…Secondary circulation is the component of three‐dimensional (3D) flow in river channels perpendicular to the primary flow direction. Secondary circulation…”
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3-D Simulations of the San Francisco Estuary with Subgrid Bathymetry to Explore Long-Term Trends in Salinity Distribution and Fish Abundance by MacWilliams, Michael, Bever, Aaron, Foresman, Erin

“…The UnTRIM hydrodynamic model was applied to San Francisco Bay and the Sacramento-San Joaquin Delta (Delta) using a coarse-resolution model grid with…”
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Is the Response of Estuarine Nekton to Freshwater Flow in the San Francisco Estuary Explained by Variation in Habitat Volume? by Kimmerer, Wim J., Gross, Edward S., MacWilliams, Michael L.

“…Abundance of estuarine biota can vary with freshwater inflow through several mechanisms. One proposed mechanism is that the extent of physical habitat for an…”
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Three-Dimensional Modeling of Hydrodynamics and Salinity in the San Francisco Estuary: An Evaluation of Model Accuracy, X2, and the Low-Salinity Zone by MacWilliams, Michael, Bever, Aaron, Gross, Edward, Ketefian, Gerard, Kimmerer, Wim

“…The three-dimensional UnTRIM San Francisco Bay- Delta model was applied to simulate tidal hydrodynamics and salinity in the San Francisco Estuary (estuary)…”
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Modeling Delta Smelt Distribution for Hypothesized Swimming Behaviors by Gross, Edward, Korman, Josh, Grimaldo, Lenny, MacWilliams, Michael, Bever, Aaron, Smith, Peter

“…Delta Smelt, Hypomesus transpacificus, is an endangered pelagic fish native to the San Francisco Estuary. The distribution of Delta Smelt in the estuary shifts…”
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Linking Hydrodynamic Complexity to Delta Smelt (Hypomesus transpacificus) Distribution in the San Francisco Estuary, USA by Bever, Aaron J., MacWilliams, Michael L., Herbold, Bruce, Brown, Larry R., Feyrer, Frederick V.

“…Long-term fish sampling data from the San Francisco Estuary were combined with detailed threedimensional hydrodynamic modeling to investigate the relationship…”
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Variation of Fish Habitat and Extent of the Low-Salinity Zone with Freshwater Flow in the San Francisco Estuary by Kimmerer, Wim J., MacWilliams, Michael, Gross, Edward S.

“…We used the UnTRIM San Francisco Bay-Delta hydrodynamic model to examine the spatial distribution of salinity as a function of freshwater flow in the San…”
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Hydrodynamic Simulation of Circulation and Residence Time in Clifton Court Forebay by MacWilliams, Michael, Gross, Edward

“…Circulation in Clifton Court Forebay (CCF) was simulated using the three-dimensional (3-D) hydrodynamic model UnTRIM. These numerical simulations were…”
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The Extent of Seasonally Suitable Habitats May Limit Forage Fish Production in a Temperate Estuary by Fabrizio, Mary C., Tuckey, Troy D., Bever, Aaron J., MacWilliams, Michael L.

“…The sustained production of sufficient forage is critical to advancing ecosystem-based management, yet factors that affect local abundances and habitat…”
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Assessment of the Effectiveness of a Constructed Compound Channel River Restoration Project on an Incised Stream by MacWilliams, Michael L, Tompkins, Mark R, Street, Robert L, Kondolf, G. Mathias, Kitanidis, Peter K

“…Compound channels are often constructed in restoration projects on rivers and streams that have been channelized or are deeply incised. This design allows for…”
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An Overview of Multi-Dimensional Models of the Sacramento–San Joaquin Delta by MacWilliams, Michael L., Ateljevich, Eli S., Monismith, Stephen G., Enright, Chris

“…doi: https://doi.org/10.15447/sfews.2016v14iss4art2 Over the past 15 years, the development and application of multi-dimensional hydrodynamic models in San…”
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Modeling Delta Smelt Distribution for Hypothesized Swimming Behaviors by Gross, Edward, Korman, Josh, Grimaldo, Lenny, MacWilliams, Michael, Bever, Aaron, Smith, Peter

“…Delta Smelt, Hypomesus transpacificus, is an endangered pelagic fish native to the San Francisco Estuary. The distribution of Delta Smelt in the estuary shifts…”
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Use of a Managed Flow Pulse as Food Web Support for Estuarine Habitat by Frantzich, Jared, Davis, Brittany, MacWilliams, Michael, Bever, Aaron, Sommer, Ted

“…While freshwater inflow has been a major focus of resource management in estuaries, including the upper San Francisco Estuary, there is a growing interest in…”
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An Overview of Multi-Dimensional Models of the Sacramento–San Joaquin Delta by MacWilliams, Michael L., Ateljevich, Eli S., Monismith, Stephen G., Enright, Chris

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Three-dimensional hydrodynamic simulation of river channels and floodplains by MacWilliams, Michael L

“…Three-dimensional hydrodynamic simulation of flow in river channels and on floodplains offers the potential to increase the current understanding of stream…”
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