Robert Jacobson, PhD (Former Employee)
Science and Products
Filter Total Items: 14
Filter Total Items: 141
Watershed sustainability: Downstream effects of timber harvest in the Ozarks of Missouri
The downstream effects of timber harvest in the Ozarks of Missouri can be evaluated by analogy to other geographic areas and by historical analysis of responses to past land use activities. Based on research from other geographic regions, timber harvest in the Ozarks would be expected to have minor effects on annual water yield and dissolved-phase water quality. The potential exists for haul roads
Authors
Robert B. Jacobson
Ecology for a crowded planet
Within the next 50 to 100 years, the support and maintenance of an extended human family of 8 to 11 billion people will be difficult at best. The authors of this Policy Forum describe changes that are required if we hope to meet the needs and aspirations of humans while improving the health of our planet's ecosystems. Problems as diverse as disease transmission and global climate change have benef
Authors
Margaret Palmer, Emily S. Bernhardt, Elizabeth A. Chornesky, Scott L. Collins, Andrew Dobson, Clifford S. Duke, Barry Gold, Robert Jacobson, Sharon E. Kingsland, Rhonda H. Kranz, Michael J. Mappin, M. Luisa Martinez, Fiorenza Micheli, Jennifer L. Morse, Michael L. Pace, Mercedes Pascual, Stephen S. Palumbi, O. J. Reichman, Ashley Simons, Alan R. Townsend, Monica Turner
Physical aquatic habitat assessment, Fort Randall segment of the Missouri River, Nebraska and South Dakota
This study addressed habitat availability and use by endangered pallid sturgeon (Scaphirhynchus albus) in the Fort Randall segment of the Missouri River. Physical aquatic habitat - depth, velocity, and substrate - was mapped in 15 sites in Augsust and October of 2002. Habitat assessments were compared with fish locations using radio telemetry. Results indicate that pallid sturgeon preferentially
Authors
Caroline M. Elliott, Robert B. Jacobson, Aaron J. DeLonay
Assessment of shallow-water habitat availability in modified dike structures, Lower Missouri River, 2004
This study documented the effects of wing-dike notching on the availability of shallow water habitat in the Lower Missouri River. Five wing dikes were surveyed in late May 2004 after they were notched in early May as part of shallow-water habitat (SWH) rehabilitation activities undertaken by the U.S. Army Corps of Engineers. Surveys included high-resolution hydroacoustic depth, velocity, and subst
Authors
Robert B. Jacobson, Caroline M. Elliott, Harold E. Johnson
Physical aquatic habitat assessment data, Ozark plateaus, Missouri and Arkansas
This report presents data from two related studies on physical habitat in small streams in the Ozark Plateaus Physiographic Province of Missouri and Arkansas. Seventy stream reaches and their contributing drainage basins were assessed using a physical habitat protocol designed to optimize understanding of how stream reach characteristics relate to drainage-basin characteristics. Drainage-basin c
Authors
Robert B. Jacobson, Harold E. Johnson, Joanna M. Reuter, Maria Panfil Wright
Physical habitat dynamics in four side-channel chutes, lower Missouri River
Construction of the side-channel chutes has become a popular means to rehabilitate habitate of the Lower Missouri River. We studied various aspects of hydrology, hydraulics, and geomorphology of four side-channel chutes to document a range of existing conditions in the Lower Missouri River. The Cranberry Bend side-channel chute has existed for at least 40 years and is an example of a persistent, m
Authors
Robert B. Jacobson, Harold E. Johnson, Mark S. Laustrup, Gary J. D'Urso, Joanna M. Reuter
Geomorphic effects in levee-break complexes and implications for flood-damage assessment: Chapter 3.5
No abstract available.
Authors
Robert B. Jacobson
Physical stream habitat dynamics in Lower Bear Creek, northern Arkansas
We evaluated the roles of geomorphic and hydrologic dynamics in determining physical stream habitat in Bear Creek, a stream with a 239 km2 drainage basin in the Ozark Plateaus (Ozarks) in northern Arkansas. During a relatively wet 12-month monitoring period, the geomorphology of Bear Creek was altered by a series of floods, including at least four floods with peak discharges exceeding a 1-year re
Authors
Joanna M. Reuter, Robert B. Jacobson, Caroline M. Elliott
Ecological dynamics of wetlands at Lisbon Bottom, Big Muddy National Fish and Wildlife Refuge, Missouri
The study documented the interaction between hydrology and the biological dynamics within a single spring season at Lisbon Bottom in 1999. The study goal was to provide information necessary for resource managers to develop management strategies for this and other units of the Big Muddy National Fish and Wildlife Refuge. Researchers studied the hydrology, limnology, and biological dynamics of zoop
Authors
Duane Chapman, Ellen A. Ehrhardt, James F. Fairchild, Robert B. Jacobson, Barry C. Poulton, Linda C. Sappington, Brian P. Kelly, William R. Mabee
Habitat assessment, Missouri River at Hermann, Missouri
This report documents methods and results of aquatic habitat assessment in the Missouri River near Hermann, Missouri. The assessment is intended to improve understanding of spatial and temporal variability of aquatic habitat, including habitats thought to be critical for the endangered pallid sturgeon (Scaphirhynchus albus). Physical aquatic habitat – depth, velocity, and substrate – was assessed
Authors
Robert B. Jacobson, Mark S. Laustrup, Joanna M. Reuter
Visualization of Flow Alternatives, Lower Missouri River
Background
The U.S. Army Corps of Engineers (COE) 'Missouri River Master Water Control Manual' (Master Manual) review has resulted in consideration of many flow alternatives for managing the water in the river (COE, 2001; 1998a). The purpose of this report is to present flow-management alternative model results in a way that can be easily visualized and understood. This report was updated in Oc
Authors
Robert B. Jacobson, Jeanne Heuser
Fluvial processes and passive rehabilitation of the Lisbon Bottom side-channel chute, Lower Missouri River
Multiple large floods in 1993-1997 on the Lower Missouri River carved a side-channel chute through the river bottom at Lisbon, Missouri. Although similar in some respects to engineered side-channel chutes designed for habitat rehabilitation projects, the Lisbon Bottom chute has been unique in that it was allowed to evolve for more than four years with minimal stabilization. During the wet years, 1
Authors
Robert B. Jacobson, Mark S. Laustrup, Michael D. Chapman
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
Filter Total Items: 14
Filter Total Items: 141
Watershed sustainability: Downstream effects of timber harvest in the Ozarks of Missouri
The downstream effects of timber harvest in the Ozarks of Missouri can be evaluated by analogy to other geographic areas and by historical analysis of responses to past land use activities. Based on research from other geographic regions, timber harvest in the Ozarks would be expected to have minor effects on annual water yield and dissolved-phase water quality. The potential exists for haul roads
Authors
Robert B. Jacobson
Ecology for a crowded planet
Within the next 50 to 100 years, the support and maintenance of an extended human family of 8 to 11 billion people will be difficult at best. The authors of this Policy Forum describe changes that are required if we hope to meet the needs and aspirations of humans while improving the health of our planet's ecosystems. Problems as diverse as disease transmission and global climate change have benef
Authors
Margaret Palmer, Emily S. Bernhardt, Elizabeth A. Chornesky, Scott L. Collins, Andrew Dobson, Clifford S. Duke, Barry Gold, Robert Jacobson, Sharon E. Kingsland, Rhonda H. Kranz, Michael J. Mappin, M. Luisa Martinez, Fiorenza Micheli, Jennifer L. Morse, Michael L. Pace, Mercedes Pascual, Stephen S. Palumbi, O. J. Reichman, Ashley Simons, Alan R. Townsend, Monica Turner
Physical aquatic habitat assessment, Fort Randall segment of the Missouri River, Nebraska and South Dakota
This study addressed habitat availability and use by endangered pallid sturgeon (Scaphirhynchus albus) in the Fort Randall segment of the Missouri River. Physical aquatic habitat - depth, velocity, and substrate - was mapped in 15 sites in Augsust and October of 2002. Habitat assessments were compared with fish locations using radio telemetry. Results indicate that pallid sturgeon preferentially
Authors
Caroline M. Elliott, Robert B. Jacobson, Aaron J. DeLonay
Assessment of shallow-water habitat availability in modified dike structures, Lower Missouri River, 2004
This study documented the effects of wing-dike notching on the availability of shallow water habitat in the Lower Missouri River. Five wing dikes were surveyed in late May 2004 after they were notched in early May as part of shallow-water habitat (SWH) rehabilitation activities undertaken by the U.S. Army Corps of Engineers. Surveys included high-resolution hydroacoustic depth, velocity, and subst
Authors
Robert B. Jacobson, Caroline M. Elliott, Harold E. Johnson
Physical aquatic habitat assessment data, Ozark plateaus, Missouri and Arkansas
This report presents data from two related studies on physical habitat in small streams in the Ozark Plateaus Physiographic Province of Missouri and Arkansas. Seventy stream reaches and their contributing drainage basins were assessed using a physical habitat protocol designed to optimize understanding of how stream reach characteristics relate to drainage-basin characteristics. Drainage-basin c
Authors
Robert B. Jacobson, Harold E. Johnson, Joanna M. Reuter, Maria Panfil Wright
Physical habitat dynamics in four side-channel chutes, lower Missouri River
Construction of the side-channel chutes has become a popular means to rehabilitate habitate of the Lower Missouri River. We studied various aspects of hydrology, hydraulics, and geomorphology of four side-channel chutes to document a range of existing conditions in the Lower Missouri River. The Cranberry Bend side-channel chute has existed for at least 40 years and is an example of a persistent, m
Authors
Robert B. Jacobson, Harold E. Johnson, Mark S. Laustrup, Gary J. D'Urso, Joanna M. Reuter
Geomorphic effects in levee-break complexes and implications for flood-damage assessment: Chapter 3.5
No abstract available.
Authors
Robert B. Jacobson
Physical stream habitat dynamics in Lower Bear Creek, northern Arkansas
We evaluated the roles of geomorphic and hydrologic dynamics in determining physical stream habitat in Bear Creek, a stream with a 239 km2 drainage basin in the Ozark Plateaus (Ozarks) in northern Arkansas. During a relatively wet 12-month monitoring period, the geomorphology of Bear Creek was altered by a series of floods, including at least four floods with peak discharges exceeding a 1-year re
Authors
Joanna M. Reuter, Robert B. Jacobson, Caroline M. Elliott
Ecological dynamics of wetlands at Lisbon Bottom, Big Muddy National Fish and Wildlife Refuge, Missouri
The study documented the interaction between hydrology and the biological dynamics within a single spring season at Lisbon Bottom in 1999. The study goal was to provide information necessary for resource managers to develop management strategies for this and other units of the Big Muddy National Fish and Wildlife Refuge. Researchers studied the hydrology, limnology, and biological dynamics of zoop
Authors
Duane Chapman, Ellen A. Ehrhardt, James F. Fairchild, Robert B. Jacobson, Barry C. Poulton, Linda C. Sappington, Brian P. Kelly, William R. Mabee
Habitat assessment, Missouri River at Hermann, Missouri
This report documents methods and results of aquatic habitat assessment in the Missouri River near Hermann, Missouri. The assessment is intended to improve understanding of spatial and temporal variability of aquatic habitat, including habitats thought to be critical for the endangered pallid sturgeon (Scaphirhynchus albus). Physical aquatic habitat – depth, velocity, and substrate – was assessed
Authors
Robert B. Jacobson, Mark S. Laustrup, Joanna M. Reuter
Visualization of Flow Alternatives, Lower Missouri River
Background
The U.S. Army Corps of Engineers (COE) 'Missouri River Master Water Control Manual' (Master Manual) review has resulted in consideration of many flow alternatives for managing the water in the river (COE, 2001; 1998a). The purpose of this report is to present flow-management alternative model results in a way that can be easily visualized and understood. This report was updated in Oc
Authors
Robert B. Jacobson, Jeanne Heuser
Fluvial processes and passive rehabilitation of the Lisbon Bottom side-channel chute, Lower Missouri River
Multiple large floods in 1993-1997 on the Lower Missouri River carved a side-channel chute through the river bottom at Lisbon, Missouri. Although similar in some respects to engineered side-channel chutes designed for habitat rehabilitation projects, the Lisbon Bottom chute has been unique in that it was allowed to evolve for more than four years with minimal stabilization. During the wet years, 1
Authors
Robert B. Jacobson, Mark S. Laustrup, Michael D. Chapman
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.