Patrick Shafroth, PhD
Patrick B. Shafroth is a Scientist Emeritus at the Arizona Water Science Center.
Since 1991, Dr. Shafroth has conducted research on river and riparian systems, primarily in arid and semi-arid regions of western U.S. He and his colleagues from the USGS and other institutions have focused their work on understanding relationships between surface and ground-water hydrology, fluvial processes, and the dynamics of native and introduced riparian vegetation. This research has often had strong application to resource management (particularly DOI sister agencies), by providing solid, objective scientific information to inform riparian management and restoration. Specific applications have included studies of large-scale flow experiments, dam removal, effects of invasive species control, system responses to various restoration actions, vegetation responses to drought, and system responses to high intensity wildfires.
Education and Certifications
Ph.D. in Plant Biology, Arizona State University, 1999
M.S. in Forest Ecology, Colorado State University, 1993
B.A. in Environmental Studies and Geography, University of California, Santa Barbara, 1989
Science and Products
Filter Total Items: 131
A case for stream corridor restoration A case for stream corridor restoration
No abstract available.
Authors
Mark K. Briggs, Osvel Hinojosa-Huerta, Waite R. Osterkamp, Patrick B. Shafroth, Carlos A. Sifuentes Lugo, Lindsay White, Francisco Zamora
Stream-corridor restoration: Some assembly required Stream-corridor restoration: Some assembly required
No abstract available.
Authors
Mark K. Briggs, Eduardo Gonzalez, Waite R. Osterkamp, Patrick B. Shafroth, Francisco Zamora
Quantifying and securing environmental flow Quantifying and securing environmental flow
No abstract available.
Authors
Amy McCoy, Patrick B. Shafroth, Mark Briggs, Karen Schlatter, Lindsay White, Francisco Zamora, Mauricio de la Maza Benignos, Jennifer Pitt, Paul Tashjian, Yamilette Carrillo
Ecological interfaces between land and flowing water: Themes and trends in riparian research and management Ecological interfaces between land and flowing water: Themes and trends in riparian research and management
This paper provides an overview of past, present and future themes for research and management of riparian zones, often relating to papers within this Wetlands Special Feature. Riparian research expanded in the United States around 1980 with themes that recognized (1) damage from excessive livestock, or (2) damage from river damming and diversion, and (3) the beneficial capacity of...
Authors
Stewart B. Rood, Michael L. Scott, Mark Dixon, Eduardo Gonzalez, Christian O Marks, Patrick B. Shafroth, Martin Volk
Riparian plant communities remain stable in response to a second cycle of Tamarix biocontrol defoliation Riparian plant communities remain stable in response to a second cycle of Tamarix biocontrol defoliation
Reduced abundance of non-native Tamarix shrubs in western U.S. riparian systems following biological control by a defoliating beetle has led to concerns that replacement plant communities could be dominated by other invasive species and/or not provide some of the ecosystem services that Tamarix was providing. In previous studies, Tamarix decline following biocontrol was accompanied by...
Authors
Eduardo Gonzalez, Patrick B. Shafroth, Steven R. Lee, Sasha C. Reed, Jayne Belnap
Flow‐ecology modelling to inform reservoir releases for riparian restoration and management Flow‐ecology modelling to inform reservoir releases for riparian restoration and management
Linked hydrologic, hydraulic, and ecological models can facilitate planning and implementing water releases from reservoirs to achieve ecological objectives along rivers. We applied a flow‐ecology model, the Ecosystem Functions Model (HEC‐EFM), to the Bill Williams River in southwestern USA to estimate areas suitable for recruitment of riparian tree seedlings in the context of managing...
Authors
John T Hickey, Patrick B. Shafroth, Woodrow L Fields
Combined effects of biological control of an invasive shrub and fluvial processes on riparian vegetation dynamics Combined effects of biological control of an invasive shrub and fluvial processes on riparian vegetation dynamics
Plant community responses to biocontrol of invasive plants are understudied, despite the strong influence of the composition of replacement vegetation on ecosystem functions and services. We studied the vegetation response to a folivore beetle (Diorhabda genus, Coleoptera) that has been introduced along southwestern US river valleys to control the invasion of non-native shrubs in the...
Authors
Eduardo Gonzalez, Patrick B. Shafroth, Steven R. Lee, Steven M. Ostoja, Matthew L. Brooks
Effect of an environmental flow on vegetation growth and health using ground and remote sensing metrics Effect of an environmental flow on vegetation growth and health using ground and remote sensing metrics
Understanding the effectiveness of environmental flow deliveries along rivers requires monitoring vegetation. Monitoring data are often collected at multiple spatial scales. For riparian vegetation, optical remote sensing methods can estimate growth responses at the riparian corridor scale, and field‐based measures can quantify species composition; however, the extent to which these...
Authors
Martha M. Gomez-Sapiens, Christopher Jarchow, Karl W. Flessa, Patrick B. Shafroth, Edward P. Glenn, Pamela L. Nagler
Short-term geomorphological and riparian vegetation responses to a 40-year flood on a braided, dryland river Short-term geomorphological and riparian vegetation responses to a 40-year flood on a braided, dryland river
In December 2010, a 40-yr flood occurred in the lower Virgin River (SE Nevada, southwestern U.S.), a braided river segment with riparian vegetation largely dominated by invasive shrubs in the genus Tamarix. We assessed geomorphological and vegetation responses to this large magnitude disturbance event by comparing pre- and post-flood remote sensing and field survey data in four river...
Authors
Eduardo Gozalez, Patrick B. Shafroth, Steven R. Lee, Glen T. Leverich, Rafael Real de Asua, Rebecca A. Sherry, Steven M. Ostoja, Bruce K. Orr
Projected warming disrupts the synchrony of riparian seed dispersal and snowmelt streamflow Projected warming disrupts the synchrony of riparian seed dispersal and snowmelt streamflow
• Globally, spring phenology and abiotic processes are shifting earlier with warming. Differences in the magnitudes of these shifts may decouple the timing of plant resource requirements from resource availability. In riparian forests across the northern hemisphere, warming could decouple seed dispersal from snowmelt peak streamflow, thus reducing moisture and safe-sites for dominant...
Authors
Laura G. Perry, Patrick B. Shafroth, Lauren Hay, Steven L. Markstrom, Andrew R. Bock
Conceptualizing ecological responses to dam removal: If you remove it, what's to come? Conceptualizing ecological responses to dam removal: If you remove it, what's to come?
One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objective, we synthesized information from empirical studies and ecological theory into conceptual models that depict key physical and biological links driving ecological responses to removing dams. We define models for three distinct spatial...
Authors
J. Ryan Bellmore, George R. Pess, Jeffrey J. Duda, Jim E. O'Connor, Amy E. East, Melissa M. Foley, Andrew C. Wilcox, Jon J. Major, Patrick B. Shafroth, Sarah A. Morley, Christopher S. Magirl, Chauncey W. Anderson, James E. Evans, Christian E. Torgersen, Laura S. Craig
By
Ecosystems Mission Area, Coastal and Marine Hazards and Resources Program, Species Management Research Program, Arizona Water Science Center, Forest and Rangeland Ecosystem Science Center, Fort Collins Science Center, Geology, Minerals, Energy, and Geophysics Science Center, John Wesley Powell Center for Analysis and Synthesis, Oregon Water Science Center, Pacific Coastal and Marine Science Center, Western Fisheries Research Center
Vegetative and geomorphic complexity at tributary junctions on the Colorado and Dolores Rivers: a blueprint for riparian restoration Vegetative and geomorphic complexity at tributary junctions on the Colorado and Dolores Rivers: a blueprint for riparian restoration
Context Habitat complexity in rivers is linked to dynamic fluvial conditions acting at various spatial scales. On regulated rivers in the western United States, tributaries are regions of high energy and disturbance, providing important resource inputs for riparian ecosystems. Objectives This study investigated spatial patterns and extents of tributary influence on riparian habitat...
Authors
Margaret S. White, Brian G. Tavernia, Patrick B. Shafroth, Teresa B. Chapman, John S. Sanderson
Non-USGS Publications**
Shafroth, P.B., J.C. Stromberg, D.T. Patten, A.E. Springer, and J.M. Wright. 1996. Ground-water recharge and riparian habitat enhancement from water discharged from New Waddell Dam into the Agua Fria River: Phase I--Planning and feasibility. Final Report to Arizona Dept. of Water Resources - Phoenix Active Management Area. Phoenix, AZ78+ap p.
Shafroth, P.B., J.M. Friedman, and L.S. Ischinger. 1994. River salinity has little influence on establishment of cottonwood and saltcedar. Research Information Bulletin 94-95. NBS Information Bulletin.
**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.
Filter Total Items: 13
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Science and Products
Filter Total Items: 131
A case for stream corridor restoration A case for stream corridor restoration
No abstract available.
Authors
Mark K. Briggs, Osvel Hinojosa-Huerta, Waite R. Osterkamp, Patrick B. Shafroth, Carlos A. Sifuentes Lugo, Lindsay White, Francisco Zamora
Stream-corridor restoration: Some assembly required Stream-corridor restoration: Some assembly required
No abstract available.
Authors
Mark K. Briggs, Eduardo Gonzalez, Waite R. Osterkamp, Patrick B. Shafroth, Francisco Zamora
Quantifying and securing environmental flow Quantifying and securing environmental flow
No abstract available.
Authors
Amy McCoy, Patrick B. Shafroth, Mark Briggs, Karen Schlatter, Lindsay White, Francisco Zamora, Mauricio de la Maza Benignos, Jennifer Pitt, Paul Tashjian, Yamilette Carrillo
Ecological interfaces between land and flowing water: Themes and trends in riparian research and management Ecological interfaces between land and flowing water: Themes and trends in riparian research and management
This paper provides an overview of past, present and future themes for research and management of riparian zones, often relating to papers within this Wetlands Special Feature. Riparian research expanded in the United States around 1980 with themes that recognized (1) damage from excessive livestock, or (2) damage from river damming and diversion, and (3) the beneficial capacity of...
Authors
Stewart B. Rood, Michael L. Scott, Mark Dixon, Eduardo Gonzalez, Christian O Marks, Patrick B. Shafroth, Martin Volk
Riparian plant communities remain stable in response to a second cycle of Tamarix biocontrol defoliation Riparian plant communities remain stable in response to a second cycle of Tamarix biocontrol defoliation
Reduced abundance of non-native Tamarix shrubs in western U.S. riparian systems following biological control by a defoliating beetle has led to concerns that replacement plant communities could be dominated by other invasive species and/or not provide some of the ecosystem services that Tamarix was providing. In previous studies, Tamarix decline following biocontrol was accompanied by...
Authors
Eduardo Gonzalez, Patrick B. Shafroth, Steven R. Lee, Sasha C. Reed, Jayne Belnap
Flow‐ecology modelling to inform reservoir releases for riparian restoration and management Flow‐ecology modelling to inform reservoir releases for riparian restoration and management
Linked hydrologic, hydraulic, and ecological models can facilitate planning and implementing water releases from reservoirs to achieve ecological objectives along rivers. We applied a flow‐ecology model, the Ecosystem Functions Model (HEC‐EFM), to the Bill Williams River in southwestern USA to estimate areas suitable for recruitment of riparian tree seedlings in the context of managing...
Authors
John T Hickey, Patrick B. Shafroth, Woodrow L Fields
Combined effects of biological control of an invasive shrub and fluvial processes on riparian vegetation dynamics Combined effects of biological control of an invasive shrub and fluvial processes on riparian vegetation dynamics
Plant community responses to biocontrol of invasive plants are understudied, despite the strong influence of the composition of replacement vegetation on ecosystem functions and services. We studied the vegetation response to a folivore beetle (Diorhabda genus, Coleoptera) that has been introduced along southwestern US river valleys to control the invasion of non-native shrubs in the...
Authors
Eduardo Gonzalez, Patrick B. Shafroth, Steven R. Lee, Steven M. Ostoja, Matthew L. Brooks
Effect of an environmental flow on vegetation growth and health using ground and remote sensing metrics Effect of an environmental flow on vegetation growth and health using ground and remote sensing metrics
Understanding the effectiveness of environmental flow deliveries along rivers requires monitoring vegetation. Monitoring data are often collected at multiple spatial scales. For riparian vegetation, optical remote sensing methods can estimate growth responses at the riparian corridor scale, and field‐based measures can quantify species composition; however, the extent to which these...
Authors
Martha M. Gomez-Sapiens, Christopher Jarchow, Karl W. Flessa, Patrick B. Shafroth, Edward P. Glenn, Pamela L. Nagler
Short-term geomorphological and riparian vegetation responses to a 40-year flood on a braided, dryland river Short-term geomorphological and riparian vegetation responses to a 40-year flood on a braided, dryland river
In December 2010, a 40-yr flood occurred in the lower Virgin River (SE Nevada, southwestern U.S.), a braided river segment with riparian vegetation largely dominated by invasive shrubs in the genus Tamarix. We assessed geomorphological and vegetation responses to this large magnitude disturbance event by comparing pre- and post-flood remote sensing and field survey data in four river...
Authors
Eduardo Gozalez, Patrick B. Shafroth, Steven R. Lee, Glen T. Leverich, Rafael Real de Asua, Rebecca A. Sherry, Steven M. Ostoja, Bruce K. Orr
Projected warming disrupts the synchrony of riparian seed dispersal and snowmelt streamflow Projected warming disrupts the synchrony of riparian seed dispersal and snowmelt streamflow
• Globally, spring phenology and abiotic processes are shifting earlier with warming. Differences in the magnitudes of these shifts may decouple the timing of plant resource requirements from resource availability. In riparian forests across the northern hemisphere, warming could decouple seed dispersal from snowmelt peak streamflow, thus reducing moisture and safe-sites for dominant...
Authors
Laura G. Perry, Patrick B. Shafroth, Lauren Hay, Steven L. Markstrom, Andrew R. Bock
Conceptualizing ecological responses to dam removal: If you remove it, what's to come? Conceptualizing ecological responses to dam removal: If you remove it, what's to come?
One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objective, we synthesized information from empirical studies and ecological theory into conceptual models that depict key physical and biological links driving ecological responses to removing dams. We define models for three distinct spatial...
Authors
J. Ryan Bellmore, George R. Pess, Jeffrey J. Duda, Jim E. O'Connor, Amy E. East, Melissa M. Foley, Andrew C. Wilcox, Jon J. Major, Patrick B. Shafroth, Sarah A. Morley, Christopher S. Magirl, Chauncey W. Anderson, James E. Evans, Christian E. Torgersen, Laura S. Craig
By
Ecosystems Mission Area, Coastal and Marine Hazards and Resources Program, Species Management Research Program, Arizona Water Science Center, Forest and Rangeland Ecosystem Science Center, Fort Collins Science Center, Geology, Minerals, Energy, and Geophysics Science Center, John Wesley Powell Center for Analysis and Synthesis, Oregon Water Science Center, Pacific Coastal and Marine Science Center, Western Fisheries Research Center
Vegetative and geomorphic complexity at tributary junctions on the Colorado and Dolores Rivers: a blueprint for riparian restoration Vegetative and geomorphic complexity at tributary junctions on the Colorado and Dolores Rivers: a blueprint for riparian restoration
Context Habitat complexity in rivers is linked to dynamic fluvial conditions acting at various spatial scales. On regulated rivers in the western United States, tributaries are regions of high energy and disturbance, providing important resource inputs for riparian ecosystems. Objectives This study investigated spatial patterns and extents of tributary influence on riparian habitat...
Authors
Margaret S. White, Brian G. Tavernia, Patrick B. Shafroth, Teresa B. Chapman, John S. Sanderson
Non-USGS Publications**
Shafroth, P.B., J.C. Stromberg, D.T. Patten, A.E. Springer, and J.M. Wright. 1996. Ground-water recharge and riparian habitat enhancement from water discharged from New Waddell Dam into the Agua Fria River: Phase I--Planning and feasibility. Final Report to Arizona Dept. of Water Resources - Phoenix Active Management Area. Phoenix, AZ78+ap p.
Shafroth, P.B., J.M. Friedman, and L.S. Ischinger. 1994. River salinity has little influence on establishment of cottonwood and saltcedar. Research Information Bulletin 94-95. NBS Information Bulletin.
**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.
Filter Total Items: 13
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