Paul Stumpner is a Hydrologist at the California Water Science Center.
Science and Products
Numerical Simulation of 1D Advection-Dispersion Equation of Conservative Tracer with Oscillating Tidal Flows
Model archive for a numerical simulation of the one-dimensional advection-dispersion equation of a conservative tracer with oscillating tidal flows. The numerical simulation was used to examine how a conservative tracer evolves along a tidal channel. Scenarios were run to examine the effects increased dispersion, increased and decreased mixing at a channel junction, and increased advection. Code f
Velocity mapping using moving boat acoustic Doppler current profiler on the Sacramento River near the western end of the Fremont Weir in February and March 2016, and May 2017
Geo-referenced two dimensional velocity profiles collected at discrete cross-sections over an approximately 2km stretch of the Sacramento River. These data were collected over a range of river conditions (stage and discharge) on eight separate dates in February and March of 2016 and May of 2017. Data are available as .csv files contained in the attached .zip file.
Filter Total Items: 13
Hydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater tidal terminal channel in the San Francisco Estuary, Calif
Authors
Adrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven Sadro
Hydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta
Terminal channels were historically a common feature of tidal delta ecosystems but have become increasingly rare as landscapes have been modified. Tidal hydrodynamics are a defining feature in tidal terminal channel ecosystems from which native aquatic communities have evolved. However, few studies have explored the relationship between fish community structure and hydrodynamics in these tidal ter
Authors
Brock Huntsman, Matthew Young, Frederick Feyrer, Paul Stumpner, Larry R. Brown, Jon R. Burau
Whole-ecosystem experiment illustrates short timescale hydrodynamic, light, and nutrient control of primary production in a terminal slough
Estuaries are among the most productive of aquatic ecosystems. Yet the collective understanding of patterns and drivers of primary production in estuaries is incomplete, in part due to complex hydrodynamics and multiple controlling factors that vary at a range of temporal and spatial scales. A whole-ecosystem experiment was conducted in a deep, pelagically dominated terminal channel of the Sacrame
Authors
Luke C. Loken, Steven Sadro, Leah Lenoch, Paul Stumpner, Randy A Dahlgren, Jon R. Burau, Erwin E Van Nieuwenhuyse
Dispersion and stratification dynamics in the upper Sacramento River deep water ship channel
Hydrodynamics control the movement of water and material within and among habitats, where time-scales of mixing can exert bottom-up regulatory effects on aquatic ecosystems through their influence on primary production. The San Francisco Estuary (estuary) is a low-productivity ecosystem, which is in part responsible for constraining higher trophic levels, including fishes. Many research and habita
Authors
Leah Lenoch, Paul Stumpner, Jon R. Burau, Luke C. Loken, Steven Sadro
Assessment of multiple ecosystem metabolism methods in an estuary
Ecosystem metabolism is a key ecological attribute and easy to describe, but quantifying metabolism in estuaries is challenging. Properly scaling measurements through time and space requires consideration of hydrodynamics and mixing water from heterogeneous sources, making any estimation uncertain. Here, we compared three methods for modeling ecosystem metabolism in a portion of the Sacramento-San
Authors
Luke C. Loken, Erwin E Van Nieuwenhuyse, Randy A Dahlgren, Leah Kammel, Paul Stumpner, Jon R. Burau, Steven Sadro
Effects of tidally varying river flow on entrainment of juvenile salmon into Sutter and Steamboat Sloughs
Survival of juvenile salmonids in the Sacramento–San Joaquin Delta (Delta) varies by migration route, and thus the proportion of fish that use each route affects overall survival through the Delta. Understanding factors that drive routing at channel junctions along the Sacramento River is therefore critical to devising management strategies that maximize survival. Here, we examine entrainment of a
Authors
Jason G. Romine, Russell Perry, Paul Stumpner, Aaron R. Blake, Jon R. Burau
A lagrangian-to-eulerian metric to identify estuarine pelagic habitats
Estuaries are among the world’s most productive ecosystems, but recent natural and anthropogenic changes have stressed these ecosystems. Tools to assess estuarine pelagic habitats are important to support and maintain healthy ecosystem function. In this work, we demonstrate that estuarine pelagic habitats can be identified by a simple ratio, termed the LE ratio, that takes into account the tidal e
Authors
Paul Stumpner, Jon R. Burau, Alexander L. Forrest
Hydrodynamics drive pelagic communities and food web structure in a tidal environment
Hydrodynamic processes can lead to the accumulation and/or dispersal of water column constituents, including sediment, phytoplankton, and particulate detritus. Using a combination of field observations and stable isotope tracing tools, we identified how hydrodynamic processes influenced physical habitat, pelagic communities, and food web structure in a freshwater tidal system. The pelagic habitat
Authors
Matthew Young, Frederick Feyrer, Paul Stumpner, Veronica Larwood, Oliver Patton, Larry R. Brown
Combining models of the critical streakline and the cross-sectional distribution of juvenile salmon to predict fish routing at river junctions
Because fish that enter the interior Delta have poorer survival than those emigrating via the Sacramento River, understanding the mechanisms that drive entrainment rates at side channel junctions is critically important for the management of imperiled juvenile salmon. Here, we implement a previously proposed process-based conceptual model to study entrainment rates based on three linked elements:
Authors
Dalton Hance, Russell Perry, Jon R. Burau, Aaron R. Blake, Paul Stumpner, Xiaochun Wang, Adam Pope
Hydrology and hydrodynamics on the Sacramento River near the Fremont Weir, California—Implications for juvenile salmon entrainment estimates
Estimates of fish entrainment on the Sacramento River near the Fremont Weir are a critical component in determining the feasibility and design of a proposed notch in the weir to increase access to the Yolo Bypass, a seasonal floodplain of the Sacramento River. Detailed hydrodynamic and velocity measurements were made at a river bend near the Fremont Weir in the winter and spring of 2016 to examine
Authors
Paul R. Stumpner, Aaron R. Blake, Jon R. Burau
A simulation method for combining hydrodynamic data and acoustic tag tracks to predict the entrainment of juvenile salmonids onto the Yolo Bypass under future engineering scenarios
During water year 2016 the U.S. Geological Survey California Water Science Center (USGS) collaborated with the California Department of Water Resources (DWR) to conduct a joint hydrodynamic and fisheries study to acquire data that could be used to evaluate the effects of proposed modifications to the Fremont Weir on outmigrating juvenile Chinook salmon. During this study the USGS surgically implan
Authors
Aaron R. Blake, Paul Stumpner, Jon R. Burau
Evaluation of a floating fish guidance structure at a hydrodynamically complex river junction in the Sacramento-San Joaquin River Delta, California, USA
Survival of out-migrating juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Sacramento–San Joaquin River delta, California, USA, varies by migration route. Survival of salmonids that enter the interior and southern Delta can be as low as half that of salmonids that remain in the main-stem Sacramento River. Reducing entrainment into the higher-mortality routes, such as Georgiana Slough, sho
Authors
Jason G. Romine, Russell W. Perry, Adam C. Pope, Paul Stumpner, Theresa L. Liedtke, Kevin K. Kumagai, Ryan L. Reeves
Science and Products
- Data
Numerical Simulation of 1D Advection-Dispersion Equation of Conservative Tracer with Oscillating Tidal Flows
Model archive for a numerical simulation of the one-dimensional advection-dispersion equation of a conservative tracer with oscillating tidal flows. The numerical simulation was used to examine how a conservative tracer evolves along a tidal channel. Scenarios were run to examine the effects increased dispersion, increased and decreased mixing at a channel junction, and increased advection. Code fVelocity mapping using moving boat acoustic Doppler current profiler on the Sacramento River near the western end of the Fremont Weir in February and March 2016, and May 2017
Geo-referenced two dimensional velocity profiles collected at discrete cross-sections over an approximately 2km stretch of the Sacramento River. These data were collected over a range of river conditions (stage and discharge) on eight separate dates in February and March of 2016 and May of 2017. Data are available as .csv files contained in the attached .zip file. - Publications
Filter Total Items: 13
Hydrodynamics structure plankton communities and interactions in a freshwater tidal estuary
Drivers of phytoplankton and zooplankton dynamics vary spatially and temporally in estuaries due to variation in hydrodynamic exchange and residence time, complicating efforts to understand controls on food web productivity. We conducted approximately monthly (2012–2019; n = 74) longitudinal sampling at 10 fixed stations along a freshwater tidal terminal channel in the San Francisco Estuary, CalifAuthorsAdrianne P Smits, Luke C. Loken, Erwin E Van Nieuwenhuyse, Matthew Young, Paul Stumpner, Leah Kammel, Jon R. Burau, Randy A Dahlgren, Tiffany Brown, April Hennessey, Steven SadroHydrodynamics and habitat interact to structure fish communities within terminal channels of a tidal freshwater delta
Terminal channels were historically a common feature of tidal delta ecosystems but have become increasingly rare as landscapes have been modified. Tidal hydrodynamics are a defining feature in tidal terminal channel ecosystems from which native aquatic communities have evolved. However, few studies have explored the relationship between fish community structure and hydrodynamics in these tidal terAuthorsBrock Huntsman, Matthew Young, Frederick Feyrer, Paul Stumpner, Larry R. Brown, Jon R. BurauWhole-ecosystem experiment illustrates short timescale hydrodynamic, light, and nutrient control of primary production in a terminal slough
Estuaries are among the most productive of aquatic ecosystems. Yet the collective understanding of patterns and drivers of primary production in estuaries is incomplete, in part due to complex hydrodynamics and multiple controlling factors that vary at a range of temporal and spatial scales. A whole-ecosystem experiment was conducted in a deep, pelagically dominated terminal channel of the SacrameAuthorsLuke C. Loken, Steven Sadro, Leah Lenoch, Paul Stumpner, Randy A Dahlgren, Jon R. Burau, Erwin E Van NieuwenhuyseDispersion and stratification dynamics in the upper Sacramento River deep water ship channel
Hydrodynamics control the movement of water and material within and among habitats, where time-scales of mixing can exert bottom-up regulatory effects on aquatic ecosystems through their influence on primary production. The San Francisco Estuary (estuary) is a low-productivity ecosystem, which is in part responsible for constraining higher trophic levels, including fishes. Many research and habitaAuthorsLeah Lenoch, Paul Stumpner, Jon R. Burau, Luke C. Loken, Steven SadroAssessment of multiple ecosystem metabolism methods in an estuary
Ecosystem metabolism is a key ecological attribute and easy to describe, but quantifying metabolism in estuaries is challenging. Properly scaling measurements through time and space requires consideration of hydrodynamics and mixing water from heterogeneous sources, making any estimation uncertain. Here, we compared three methods for modeling ecosystem metabolism in a portion of the Sacramento-SanAuthorsLuke C. Loken, Erwin E Van Nieuwenhuyse, Randy A Dahlgren, Leah Kammel, Paul Stumpner, Jon R. Burau, Steven SadroEffects of tidally varying river flow on entrainment of juvenile salmon into Sutter and Steamboat Sloughs
Survival of juvenile salmonids in the Sacramento–San Joaquin Delta (Delta) varies by migration route, and thus the proportion of fish that use each route affects overall survival through the Delta. Understanding factors that drive routing at channel junctions along the Sacramento River is therefore critical to devising management strategies that maximize survival. Here, we examine entrainment of aAuthorsJason G. Romine, Russell Perry, Paul Stumpner, Aaron R. Blake, Jon R. BurauA lagrangian-to-eulerian metric to identify estuarine pelagic habitats
Estuaries are among the world’s most productive ecosystems, but recent natural and anthropogenic changes have stressed these ecosystems. Tools to assess estuarine pelagic habitats are important to support and maintain healthy ecosystem function. In this work, we demonstrate that estuarine pelagic habitats can be identified by a simple ratio, termed the LE ratio, that takes into account the tidal eAuthorsPaul Stumpner, Jon R. Burau, Alexander L. ForrestHydrodynamics drive pelagic communities and food web structure in a tidal environment
Hydrodynamic processes can lead to the accumulation and/or dispersal of water column constituents, including sediment, phytoplankton, and particulate detritus. Using a combination of field observations and stable isotope tracing tools, we identified how hydrodynamic processes influenced physical habitat, pelagic communities, and food web structure in a freshwater tidal system. The pelagic habitatAuthorsMatthew Young, Frederick Feyrer, Paul Stumpner, Veronica Larwood, Oliver Patton, Larry R. BrownCombining models of the critical streakline and the cross-sectional distribution of juvenile salmon to predict fish routing at river junctions
Because fish that enter the interior Delta have poorer survival than those emigrating via the Sacramento River, understanding the mechanisms that drive entrainment rates at side channel junctions is critically important for the management of imperiled juvenile salmon. Here, we implement a previously proposed process-based conceptual model to study entrainment rates based on three linked elements:AuthorsDalton Hance, Russell Perry, Jon R. Burau, Aaron R. Blake, Paul Stumpner, Xiaochun Wang, Adam PopeHydrology and hydrodynamics on the Sacramento River near the Fremont Weir, California—Implications for juvenile salmon entrainment estimates
Estimates of fish entrainment on the Sacramento River near the Fremont Weir are a critical component in determining the feasibility and design of a proposed notch in the weir to increase access to the Yolo Bypass, a seasonal floodplain of the Sacramento River. Detailed hydrodynamic and velocity measurements were made at a river bend near the Fremont Weir in the winter and spring of 2016 to examineAuthorsPaul R. Stumpner, Aaron R. Blake, Jon R. BurauA simulation method for combining hydrodynamic data and acoustic tag tracks to predict the entrainment of juvenile salmonids onto the Yolo Bypass under future engineering scenarios
During water year 2016 the U.S. Geological Survey California Water Science Center (USGS) collaborated with the California Department of Water Resources (DWR) to conduct a joint hydrodynamic and fisheries study to acquire data that could be used to evaluate the effects of proposed modifications to the Fremont Weir on outmigrating juvenile Chinook salmon. During this study the USGS surgically implanAuthorsAaron R. Blake, Paul Stumpner, Jon R. BurauEvaluation of a floating fish guidance structure at a hydrodynamically complex river junction in the Sacramento-San Joaquin River Delta, California, USA
Survival of out-migrating juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Sacramento–San Joaquin River delta, California, USA, varies by migration route. Survival of salmonids that enter the interior and southern Delta can be as low as half that of salmonids that remain in the main-stem Sacramento River. Reducing entrainment into the higher-mortality routes, such as Georgiana Slough, shoAuthorsJason G. Romine, Russell W. Perry, Adam C. Pope, Paul Stumpner, Theresa L. Liedtke, Kevin K. Kumagai, Ryan L. Reeves