Science and Products
Filter Total Items: 14
CERC Eco-flume
The CERC Eco-flume is a continuous-loop, racetrack style flume. It is housed in a 1,350 square-foot laboratory at CERC and will be used to study transport phenomena and biophysical processes in river environments.
Exploring the Potential for Conservation Lands in Middle Mississippi River Floodplains to Mitigate Flood Flows for Ecosystem Services
Reconnection of floodplains to their rivers has been considered a fundamentally beneficial ecological practice.
Missouri River Recovery Implementation Committee (MRRIC) and Adaptive Management
This project centers on assimilation of data, interpretation of results, updating quantitative models, and providing policy-neutral, high-quality information to the agencies and stakeholders in the Missouri River Basin.
River-Corridor Habitat Dynamics
River-Corridor Habitat Dynamics research seeks to improve the scientific basis for ecological restoration of large rivers. Emphasis is placed on understanding how hydrologic and geomorphic characteristics combine to create dynamic habitats for native and exotic fauna and flora.
Synthesis of Hydrologic and Geomorphic Drivers of Riverine Habitat Dynamics
Habitats of many rivers of the US are perceived to be degraded as a result of human-induced stresses. CERC scientist are focusing physical habitat as measured by depth, velocity, and substrate, in order to establish relevance of physical habitat to biota.
Geomorphic Trends and Dynamics, Missouri National Recreational River
The two mainstem Missouri River segments of the Missouri National Recreational River (MNRR) represent some of the least altered channel form and most complex physical habitat on the Missouri River. The 39-mile segment is located in an inter-reservoir reach between Fort Randall Dam and Lewis and Clark Lake and the 59-mile segment is located below Gavins Point Dam, the downstream-most water control...
Comprehensive Sturgeon Research Project (CSRP)
The Comprehensive Sturgeon Research Project (CSRP) is a multidisciplinary project conducted in cooperation with the U.S. Army Corps of Engineers, Missouri River Recovery Program–Integrated Science Program. CERC scientists are working with river scientists and managers to develop methods, baseline information, and research approaches that are critical contributions to recovery success of the...
Ecological Structure and Function, Large-River Floodplains
This project seeks to develop tools and datasets that provide insights to the common ground between flood-risk reduction and ecosystem services on large-river floodplains of the Central United States. Floodplains of large rivers are valued for their agricultural productivity and development potential, but recent floods have demonstrated the high costs and lack of resiliency when floodplains are...
Pallid Sturgeon Habitat Dynamics
CERC scientists apply advanced measurement and modeling approaches to quantifying habitats in large rivers. Our research has been applied to improving the understanding of the reproductive ecology of the endangered pallid sturgeon (Scaphirhynchus albus) in the Missouri River.
Science to Inform Management of Floodplain Conservation Lands in a Changing World
Recent extreme floods on the Mississippi and Missouri Rivers have motivated decision-makers and resource managers to expaned floodplain conservation lands. Within Missouri, there are more than 85,000 acres of public conservation lands in large-river floodplains. Floodplain lands are highly dynamic and challenging to manage, particularly climatic conditions change. These lands have the potential to
SERAP: The Effects of Climate Change on Aquatic Species and Habitat in the Southeast
USGS researchers assessed how climate change can affect land cover and flow in river systems, examining a variety of resolutions for detecting and projecting the conditions of aquatic habitats and species.
Flow, turbulence, and bathymetric measurements of the Missouri River at Searcys Bend, near Huntsdale, Missouri September 16, 2021
This dataset includes measurements of flow, turbulence, and bathymetry generated from multibeam bathymetry for a short reach of the Missouri River at Searcys Bend (SB) near Huntsdale, Missouri. Flow and turbulence were characterized using a Signature 1000 mounted on an anchored moving boat and an Aquadopp mounted on a tripod near the bed. Repeat bathymetric measurements were made in small patches
Geomorphic variables for classification of the Upper Missouri River, Montana and North Dakota
This dataset consists of seven geomorphic variables attributed to standard river mile address points at 0.1 mile (160 m) intervals between Fort Peck Dam and the headwaters of Lake Sakakawea. The data illustrate the geomorphic variation in this 300-km segment of the Upper Missouri River and are indicative of channel complexity, thought to be an important influence on dispersal and retention of larv
Inundation metrics by 10-km bend, Lower Missouri River Floodplain
This is a shapefile of points summarizing inundation metrics and geomorphic variables for bends in the downstream-most 800 km of the Lower Missouri River. Points are located at the centroids of 10-km bends of the river. The metrics were developed through analysis of inundation maps calculated from a 1-dimensional hydraulic model for the channel and floodplain. Water-surface elevations were extende
Hydraulic measurements from select reaches of the Big River, Missouri
This data release contains river bed surface grain size measurements, water-surface elevation measurements, and digital elevation models (DEMs) for select reaches of the Big River, Missouri. These data were collected in support of research assessing the hydraulic conditions of freshwater mussel habitat in the Big River. The individual metadata associated with each data type describe the process st
Remotely sensed data and field measurements for mapping visible dye concentrations during a tracer experiment on the Missouri River near Columbia, MO, May 5, 2021
This data release includes field spectra, UAS-based RGB videos, and digital orthophotography acquired from a manned fixed-wing aircraft, as well as in situ measurements of turbidity and Rhodamine WT dye concentration acquired during a tracer experiment performed on the Missouri River near Columbia, Missouri, on May 5, 2021. One of the primary goals of this tracer experiment was to assess the feas
Science to Inform Management of Floodplain Conservation Lands on the Middle Mississippi River
Within large-river ecosystems, floodplains serve a variety of important ecological functions. A recent survey of 80 managers of floodplain conservation lands along the Upper and Middle Mississippi and Lower Missouri Rivers in the central United States found that the most critical information needed to improve floodplain management centered on metrics for characterizing depth, extent, frequency, du
Pallid Sturgeon Spawning Habitat in the Lower Missouri River
Lack of reproduction has been hypothesized to be a factor in the decline of the pallid sturgeon (Scaphirhynchus albus) through much of its range. Spawning habitat and behavior have only recently been documented on the Lower Missouri River, which comprises over 1,300 river kilometers of undammed river. This data consists of habitat measurements for ten pallid sturgeon spawning events from 2008-2013
Segment-scale classification, large rivers of the Upper Midwest United States
This dataset is part of a multi-scale assessment and classification for segments of 15 rivers of the Upper Midwest United States that meet various criteria for largeness. All rivers are tributary to the Mississippi River system. The 11,600 kilometers (km) that qualified as large were parsed into 10-kilometer-long segments and classified by major alterations (free-flowing, navigation pools, storage
Missouri River Bend Classification
Management actions intended to increase growth and survival of pallid sturgeon (Scaphirhynchus albus) age-0 larvae on the Lower Missouri River require a comprehensive understanding of the geomorphic habitat template of the river. The datasets described here are intended to support decisions relating to where channel-reconfiguration projects should be located to optimize effectiveness of intercepti
Acoustic Doppler current profiler raw measurements on the Missouri and Yellowstone rivers, 2000-2016, Columbia Environmental Research Center
Between the years 2000 and 2016, scientists and technicians from the U.S. Geological Survey (USGS) Columbia Environmental Research Center (CERC) have collected over 400 field-days worth of acoustic Doppler current profiler (ADCP) measurements on the Missouri and Yellowstone Rivers, primarily for the purposes of assessing physical aquatic habitat for the pallid sturgeon. Scientists and technicians
Filter Total Items: 136
Geomorphic classification framework for assessing reproductive ecology of Scaphirhynchus albus (pallid sturgeon), Fort Peck segment, Upper Missouri River, Montana and North Dakota
The segment of the Upper Missouri River between Fort Peck Dam and the headwaters of Lake Sakakawea is home to a population of the endangered Scaphirhynchus albus (pallid sturgeon). Lack of population growth (recruitment failure) has been attributed to inadequate dispersal distance of larvae between spawning locations and the headwaters of Lake Sakakawea, where conventional wisdom holds that anoxic
Authors
Robert B. Jacobson, Caroline M. Elliott, Edward Bulliner
Performance evaluation of a channel rehabilitation project on the Lower Missouri River and implications for the dispersal of larval pallid sturgeon
In the Lower Missouri River, extensive channel modifications have altered hydraulic and morphologic conditions and reduced the river's ecological integrity. One species that has been adversely affected by these changes is the pallid sturgeon (Scaphirhynchus albus). Mainstem dams on the Missouri River restrict the upstream migration of adults and limit the downstream dispersal of larvae. Channeliza
Authors
Brandon James Sansom, Bruce Call, Carl J. Legleiter, R. B. Jacobson
Evaluations of Lagrangian egg drift models: From a laboratory flume to large channelized rivers
To help better interpret computational models in predicting drift of carp eggs in rivers, we present a series of model assessments for the longitudinal egg dispersion. Two three-dimensional Lagrangian particle tracking models, SDrift and FluEgg, are evaluated in a series of channels with increasing complexity. The model evaluation demonstrates that both models are able to accommodate channel compl
Authors
Geng Li, Caroline M. Elliott, Bruce Call, Duane Chapman, Robert B. Jacobson, Binbin Wang
Sixty years of channel adjustments to dams in the two segments of the Missouri National Recreational River, South Dakota and Nebraska
The Missouri National Recreational River (MNRR) consists of two Missouri River segments managed by the National Park Service on the border of South Dakota and Nebraska. Both river segments are unchannelized and maintain much of their pre-dam channel form, but upstream dams have caused reductions in peak flow magnitudes and sediment supply. The 39-mile segment is located between Fort Randall and Ga
Authors
Caroline M. Elliott, Robert B. Jacobson
Geomorphic controls on floodplain connectivity, ecosystem services, and sensitivity to climate change: An example from the lower Missouri River
Floodplains of large rivers are exploited for agricultural production, industrial and municipal development, and transportation infrastructure. Recently, increased frequency of costly floods has prompted consideration of whether offsetting benefits might accrue from management of floodplains for ecosystem services. We employed a simple inundation model for 800 km of the Lower Missouri River, USA,
Authors
R. B. Jacobson, Kristen L. Bouska, Edward Bulliner, Garth A. Lindner, Craig Paukert
A three-dimensional Lagrangian particle tracking model for predicting transport of eggs of rheophilic-spawning carps in turbulent rivers
Grass carp, bighead carp, and silver carp spawn in flowing water. Their eggs, and then larvae, develop while drifting. Hydraulic conditions and water temperature control spawning locations, egg survival, and the downstream distance traveled before the hatched larvae can swim for low velocity nursery habitats. Existing egg drift models simulate the fluvial transport of carp eggs but have limitation
Authors
Geng Li, Binbin Wang, Caroline M. Elliott, Bruce Call, Duane Chapman, R. B. Jacobson
Identifying monitoring information needs that support the management of fish in large rivers
Management actions intended to benefit fish in large rivers can directly or indirectly affect multiple ecosystem components. Without consideration of the effects of management on non-target ecosystem components, unintended consequences may limit management efficacy. Monitoring can help clarify the effects of management actions, including on non-target ecosystem components, but only if data are col
Authors
Timothy Counihan, Kristen L. Bouska, Shannon K. Brewer, R. B. Jacobson, Andrew F. Casper, Colin G. Chapman, Ian R. Waite, Kenneth R. Sheehan, Mark Pyron, Elise Irwin, Karen Riva-Murray, Alexa McKerrow, Jennifer M. Bayer
Hydraulics of freshwater mussel habitat in select reaches of the Big River, Missouri
The Big River is a tributary to the Meramec River in south-central Missouri. It drains an area that has been historically one of the largest lead producers in the world, and associated mine wastes have contaminated sediments in much of the river corridor. This study investigated hydraulic conditions in four study reaches to evaluate the potential contribution of physical habitat dynamics to mechan
Authors
Maura O. Roberts, Robert B. Jacobson, Susannah O. Erwin
Remote sensing of visible dye concentrations during a tracer experiment on a large, turbid river
Understanding dispersion in rivers is critical for numerous applications, such as characterizing larval drift for endangered fish species and responding to spills of hazardous materials. Injecting a visible dye into the river can yield insight on dispersion processes, but conventional field instrumentation yields limited data on variations in dye concentration over time at a few, fixed points. Rem
Authors
Carl J. Legleiter, Brandon James Sansom, R. B. Jacobson
Stream classification and gravel-bar inventory for Buffalo National River and Ozark National Scenic Riverways
The data summarized in this report provide a baseline characterization of the physical attributes of the riverine ecosystems in two landscapes managed by the National Park Service—Ozark National Scenic Riverways, Missouri, and Buffalo National River, Arkansas—to inform understanding and management of aquatic habitat. The study utilized a basin-scale approach and consisted of two components: a basi
Authors
Susannah O. Erwin, Robert B. Jacobson, Jabari C. Jones
Physical characteristics and simulated transport of pallid sturgeon and shovelnose sturgeon eggs
The imperiled pallid sturgeon (Scaphirhynchus albus) and closely related, but more common, shovelnose sturgeon (S. platorynchus) are believed to broadcast adhesive, demersal eggs in the current and over coarse substrate in turbid rivers of the North American midcontinent. It has been hypothesized that eggs settle immediately following fertilization, but field conditions preclude direct observation.
Authors
Kimberly Chojnacki, Susannah O. Erwin, Amy E. George, James Candrl, Robert B. Jacobson, Aaron J. Delonay
Characterization of pallid sturgeon (Scaphirhynchus albus) spawning habitat in the Lower Missouri River
Acipenseriformes (sturgeons and paddlefish) globally have declined throughout their range due to river fragmentation, habitat loss, overfishing, and degradation of water quality. In North America, pallid sturgeon (Scaphirhynchus albus) populations have experienced poor to no recruitment, or substantial levels of hybridization with the closely related shovelnose sturgeon (S. platorynchus). The Lowe
Authors
Caroline M. Elliott, Aaron J. Delonay, Kimberly Chojnacki, Robert B. Jacobson
Non-USGS Publications**
Jacobson, R. B., 1986, Genesis and distribution of colluvium, Buffalo Creek Area, Marion County, West Virginia: Transportation Research Record, Transportation Research Board, v. 1089, p. 63-67.
Jacobson, R. B., and Coleman, D.J., 1986, Stratigraphy and recent evolution of Maryland Piedmont flood plains: American Journal of Science, v. 286, p. 617-637
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
- Science
Filter Total Items: 14
CERC Eco-flume
The CERC Eco-flume is a continuous-loop, racetrack style flume. It is housed in a 1,350 square-foot laboratory at CERC and will be used to study transport phenomena and biophysical processes in river environments.Exploring the Potential for Conservation Lands in Middle Mississippi River Floodplains to Mitigate Flood Flows for Ecosystem Services
Reconnection of floodplains to their rivers has been considered a fundamentally beneficial ecological practice.Missouri River Recovery Implementation Committee (MRRIC) and Adaptive Management
This project centers on assimilation of data, interpretation of results, updating quantitative models, and providing policy-neutral, high-quality information to the agencies and stakeholders in the Missouri River Basin.River-Corridor Habitat Dynamics
River-Corridor Habitat Dynamics research seeks to improve the scientific basis for ecological restoration of large rivers. Emphasis is placed on understanding how hydrologic and geomorphic characteristics combine to create dynamic habitats for native and exotic fauna and flora.Synthesis of Hydrologic and Geomorphic Drivers of Riverine Habitat Dynamics
Habitats of many rivers of the US are perceived to be degraded as a result of human-induced stresses. CERC scientist are focusing physical habitat as measured by depth, velocity, and substrate, in order to establish relevance of physical habitat to biota.Geomorphic Trends and Dynamics, Missouri National Recreational River
The two mainstem Missouri River segments of the Missouri National Recreational River (MNRR) represent some of the least altered channel form and most complex physical habitat on the Missouri River. The 39-mile segment is located in an inter-reservoir reach between Fort Randall Dam and Lewis and Clark Lake and the 59-mile segment is located below Gavins Point Dam, the downstream-most water control...Comprehensive Sturgeon Research Project (CSRP)
The Comprehensive Sturgeon Research Project (CSRP) is a multidisciplinary project conducted in cooperation with the U.S. Army Corps of Engineers, Missouri River Recovery Program–Integrated Science Program. CERC scientists are working with river scientists and managers to develop methods, baseline information, and research approaches that are critical contributions to recovery success of the...Ecological Structure and Function, Large-River Floodplains
This project seeks to develop tools and datasets that provide insights to the common ground between flood-risk reduction and ecosystem services on large-river floodplains of the Central United States. Floodplains of large rivers are valued for their agricultural productivity and development potential, but recent floods have demonstrated the high costs and lack of resiliency when floodplains are...Pallid Sturgeon Habitat Dynamics
CERC scientists apply advanced measurement and modeling approaches to quantifying habitats in large rivers. Our research has been applied to improving the understanding of the reproductive ecology of the endangered pallid sturgeon (Scaphirhynchus albus) in the Missouri River.Science to Inform Management of Floodplain Conservation Lands in a Changing World
Recent extreme floods on the Mississippi and Missouri Rivers have motivated decision-makers and resource managers to expaned floodplain conservation lands. Within Missouri, there are more than 85,000 acres of public conservation lands in large-river floodplains. Floodplain lands are highly dynamic and challenging to manage, particularly climatic conditions change. These lands have the potential toSERAP: The Effects of Climate Change on Aquatic Species and Habitat in the Southeast
USGS researchers assessed how climate change can affect land cover and flow in river systems, examining a variety of resolutions for detecting and projecting the conditions of aquatic habitats and species. - Data
Flow, turbulence, and bathymetric measurements of the Missouri River at Searcys Bend, near Huntsdale, Missouri September 16, 2021
This dataset includes measurements of flow, turbulence, and bathymetry generated from multibeam bathymetry for a short reach of the Missouri River at Searcys Bend (SB) near Huntsdale, Missouri. Flow and turbulence were characterized using a Signature 1000 mounted on an anchored moving boat and an Aquadopp mounted on a tripod near the bed. Repeat bathymetric measurements were made in small patchesGeomorphic variables for classification of the Upper Missouri River, Montana and North Dakota
This dataset consists of seven geomorphic variables attributed to standard river mile address points at 0.1 mile (160 m) intervals between Fort Peck Dam and the headwaters of Lake Sakakawea. The data illustrate the geomorphic variation in this 300-km segment of the Upper Missouri River and are indicative of channel complexity, thought to be an important influence on dispersal and retention of larvInundation metrics by 10-km bend, Lower Missouri River Floodplain
This is a shapefile of points summarizing inundation metrics and geomorphic variables for bends in the downstream-most 800 km of the Lower Missouri River. Points are located at the centroids of 10-km bends of the river. The metrics were developed through analysis of inundation maps calculated from a 1-dimensional hydraulic model for the channel and floodplain. Water-surface elevations were extendeHydraulic measurements from select reaches of the Big River, Missouri
This data release contains river bed surface grain size measurements, water-surface elevation measurements, and digital elevation models (DEMs) for select reaches of the Big River, Missouri. These data were collected in support of research assessing the hydraulic conditions of freshwater mussel habitat in the Big River. The individual metadata associated with each data type describe the process stRemotely sensed data and field measurements for mapping visible dye concentrations during a tracer experiment on the Missouri River near Columbia, MO, May 5, 2021
This data release includes field spectra, UAS-based RGB videos, and digital orthophotography acquired from a manned fixed-wing aircraft, as well as in situ measurements of turbidity and Rhodamine WT dye concentration acquired during a tracer experiment performed on the Missouri River near Columbia, Missouri, on May 5, 2021. One of the primary goals of this tracer experiment was to assess the feasScience to Inform Management of Floodplain Conservation Lands on the Middle Mississippi River
Within large-river ecosystems, floodplains serve a variety of important ecological functions. A recent survey of 80 managers of floodplain conservation lands along the Upper and Middle Mississippi and Lower Missouri Rivers in the central United States found that the most critical information needed to improve floodplain management centered on metrics for characterizing depth, extent, frequency, duPallid Sturgeon Spawning Habitat in the Lower Missouri River
Lack of reproduction has been hypothesized to be a factor in the decline of the pallid sturgeon (Scaphirhynchus albus) through much of its range. Spawning habitat and behavior have only recently been documented on the Lower Missouri River, which comprises over 1,300 river kilometers of undammed river. This data consists of habitat measurements for ten pallid sturgeon spawning events from 2008-2013Segment-scale classification, large rivers of the Upper Midwest United States
This dataset is part of a multi-scale assessment and classification for segments of 15 rivers of the Upper Midwest United States that meet various criteria for largeness. All rivers are tributary to the Mississippi River system. The 11,600 kilometers (km) that qualified as large were parsed into 10-kilometer-long segments and classified by major alterations (free-flowing, navigation pools, storageMissouri River Bend Classification
Management actions intended to increase growth and survival of pallid sturgeon (Scaphirhynchus albus) age-0 larvae on the Lower Missouri River require a comprehensive understanding of the geomorphic habitat template of the river. The datasets described here are intended to support decisions relating to where channel-reconfiguration projects should be located to optimize effectiveness of interceptiAcoustic Doppler current profiler raw measurements on the Missouri and Yellowstone rivers, 2000-2016, Columbia Environmental Research Center
Between the years 2000 and 2016, scientists and technicians from the U.S. Geological Survey (USGS) Columbia Environmental Research Center (CERC) have collected over 400 field-days worth of acoustic Doppler current profiler (ADCP) measurements on the Missouri and Yellowstone Rivers, primarily for the purposes of assessing physical aquatic habitat for the pallid sturgeon. Scientists and technicians - Multimedia
- Publications
Filter Total Items: 136
Geomorphic classification framework for assessing reproductive ecology of Scaphirhynchus albus (pallid sturgeon), Fort Peck segment, Upper Missouri River, Montana and North Dakota
The segment of the Upper Missouri River between Fort Peck Dam and the headwaters of Lake Sakakawea is home to a population of the endangered Scaphirhynchus albus (pallid sturgeon). Lack of population growth (recruitment failure) has been attributed to inadequate dispersal distance of larvae between spawning locations and the headwaters of Lake Sakakawea, where conventional wisdom holds that anoxicAuthorsRobert B. Jacobson, Caroline M. Elliott, Edward BullinerPerformance evaluation of a channel rehabilitation project on the Lower Missouri River and implications for the dispersal of larval pallid sturgeon
In the Lower Missouri River, extensive channel modifications have altered hydraulic and morphologic conditions and reduced the river's ecological integrity. One species that has been adversely affected by these changes is the pallid sturgeon (Scaphirhynchus albus). Mainstem dams on the Missouri River restrict the upstream migration of adults and limit the downstream dispersal of larvae. ChannelizaAuthorsBrandon James Sansom, Bruce Call, Carl J. Legleiter, R. B. JacobsonEvaluations of Lagrangian egg drift models: From a laboratory flume to large channelized rivers
To help better interpret computational models in predicting drift of carp eggs in rivers, we present a series of model assessments for the longitudinal egg dispersion. Two three-dimensional Lagrangian particle tracking models, SDrift and FluEgg, are evaluated in a series of channels with increasing complexity. The model evaluation demonstrates that both models are able to accommodate channel complAuthorsGeng Li, Caroline M. Elliott, Bruce Call, Duane Chapman, Robert B. Jacobson, Binbin WangSixty years of channel adjustments to dams in the two segments of the Missouri National Recreational River, South Dakota and Nebraska
The Missouri National Recreational River (MNRR) consists of two Missouri River segments managed by the National Park Service on the border of South Dakota and Nebraska. Both river segments are unchannelized and maintain much of their pre-dam channel form, but upstream dams have caused reductions in peak flow magnitudes and sediment supply. The 39-mile segment is located between Fort Randall and GaAuthorsCaroline M. Elliott, Robert B. JacobsonGeomorphic controls on floodplain connectivity, ecosystem services, and sensitivity to climate change: An example from the lower Missouri River
Floodplains of large rivers are exploited for agricultural production, industrial and municipal development, and transportation infrastructure. Recently, increased frequency of costly floods has prompted consideration of whether offsetting benefits might accrue from management of floodplains for ecosystem services. We employed a simple inundation model for 800 km of the Lower Missouri River, USA,AuthorsR. B. Jacobson, Kristen L. Bouska, Edward Bulliner, Garth A. Lindner, Craig PaukertA three-dimensional Lagrangian particle tracking model for predicting transport of eggs of rheophilic-spawning carps in turbulent rivers
Grass carp, bighead carp, and silver carp spawn in flowing water. Their eggs, and then larvae, develop while drifting. Hydraulic conditions and water temperature control spawning locations, egg survival, and the downstream distance traveled before the hatched larvae can swim for low velocity nursery habitats. Existing egg drift models simulate the fluvial transport of carp eggs but have limitationAuthorsGeng Li, Binbin Wang, Caroline M. Elliott, Bruce Call, Duane Chapman, R. B. JacobsonIdentifying monitoring information needs that support the management of fish in large rivers
Management actions intended to benefit fish in large rivers can directly or indirectly affect multiple ecosystem components. Without consideration of the effects of management on non-target ecosystem components, unintended consequences may limit management efficacy. Monitoring can help clarify the effects of management actions, including on non-target ecosystem components, but only if data are colAuthorsTimothy Counihan, Kristen L. Bouska, Shannon K. Brewer, R. B. Jacobson, Andrew F. Casper, Colin G. Chapman, Ian R. Waite, Kenneth R. Sheehan, Mark Pyron, Elise Irwin, Karen Riva-Murray, Alexa McKerrow, Jennifer M. BayerHydraulics of freshwater mussel habitat in select reaches of the Big River, Missouri
The Big River is a tributary to the Meramec River in south-central Missouri. It drains an area that has been historically one of the largest lead producers in the world, and associated mine wastes have contaminated sediments in much of the river corridor. This study investigated hydraulic conditions in four study reaches to evaluate the potential contribution of physical habitat dynamics to mechanAuthorsMaura O. Roberts, Robert B. Jacobson, Susannah O. ErwinRemote sensing of visible dye concentrations during a tracer experiment on a large, turbid river
Understanding dispersion in rivers is critical for numerous applications, such as characterizing larval drift for endangered fish species and responding to spills of hazardous materials. Injecting a visible dye into the river can yield insight on dispersion processes, but conventional field instrumentation yields limited data on variations in dye concentration over time at a few, fixed points. RemAuthorsCarl J. Legleiter, Brandon James Sansom, R. B. JacobsonStream classification and gravel-bar inventory for Buffalo National River and Ozark National Scenic Riverways
The data summarized in this report provide a baseline characterization of the physical attributes of the riverine ecosystems in two landscapes managed by the National Park Service—Ozark National Scenic Riverways, Missouri, and Buffalo National River, Arkansas—to inform understanding and management of aquatic habitat. The study utilized a basin-scale approach and consisted of two components: a basiAuthorsSusannah O. Erwin, Robert B. Jacobson, Jabari C. JonesPhysical characteristics and simulated transport of pallid sturgeon and shovelnose sturgeon eggs
The imperiled pallid sturgeon (Scaphirhynchus albus) and closely related, but more common, shovelnose sturgeon (S. platorynchus) are believed to broadcast adhesive, demersal eggs in the current and over coarse substrate in turbid rivers of the North American midcontinent. It has been hypothesized that eggs settle immediately following fertilization, but field conditions preclude direct observation.AuthorsKimberly Chojnacki, Susannah O. Erwin, Amy E. George, James Candrl, Robert B. Jacobson, Aaron J. DelonayCharacterization of pallid sturgeon (Scaphirhynchus albus) spawning habitat in the Lower Missouri River
Acipenseriformes (sturgeons and paddlefish) globally have declined throughout their range due to river fragmentation, habitat loss, overfishing, and degradation of water quality. In North America, pallid sturgeon (Scaphirhynchus albus) populations have experienced poor to no recruitment, or substantial levels of hybridization with the closely related shovelnose sturgeon (S. platorynchus). The LoweAuthorsCaroline M. Elliott, Aaron J. Delonay, Kimberly Chojnacki, Robert B. JacobsonNon-USGS Publications**
Jacobson, R. B., 1986, Genesis and distribution of colluvium, Buffalo Creek Area, Marion County, West Virginia: Transportation Research Record, Transportation Research Board, v. 1089, p. 63-67.Jacobson, R. B., and Coleman, D.J., 1986, Stratigraphy and recent evolution of Maryland Piedmont flood plains: American Journal of Science, v. 286, p. 617-637**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
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