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Rebecca Mann (Former Employee)

Science and Products

Restoration plots

Well Pad Reclamation and Research

Reclamation on lands impacted by energy development is complicated and extremely challenging in arid environments due to unstable soils, exotic species, and low and variable precipitation. The reclamation tactics employed by energy operators vary widely and outcomes can differ across plant communities and soil types. In order to address the knowledge gaps regarding how to successfully and...
By
Ecosystems Mission Area, Land Management Research Program, Species Management Research Program, Southwest Biological Science Center
Well Pad Reclamation and Research

Well Pad Reclamation and Research

Reclamation on lands impacted by energy development is complicated and extremely challenging in arid environments due to unstable soils, exotic species, and low and variable precipitation. The reclamation tactics employed by energy operators vary widely and outcomes can differ across plant communities and soil types. In order to address the knowledge gaps regarding how to successfully and...
Learn More
An experimental garden nestled against the La Salle Mountains in Utah.

RestoreNet: Distributed Field Trial Network for Dryland Restoration

Starting in 2017, U.S. Geological Survey (USGS) researchers and land managers are co-producing a network of restoration field trial sites on Department of Interior (DOI) and surrounding lands in the southwestern U.S. The network systematically tests restoration treatments across a broad range of environmental gradients. Each site in the network is used to test suitable seed mixes and treatments...
By
Ecosystems Mission Area, Land Management Research Program, Southwest Biological Science Center
RestoreNet: Distributed Field Trial Network for Dryland Restoration

RestoreNet: Distributed Field Trial Network for Dryland Restoration

Starting in 2017, U.S. Geological Survey (USGS) researchers and land managers are co-producing a network of restoration field trial sites on Department of Interior (DOI) and surrounding lands in the southwestern U.S. The network systematically tests restoration treatments across a broad range of environmental gradients. Each site in the network is used to test suitable seed mixes and treatments...
Learn More
A healthy native sand dropseed grass inside a connectivity modifier consisting of small mesh screens that trap seeds

New Approaches for Restoring Colorado Plateau Grasslands

Historic over-grazing of arid grasslands in the Intermountain West has led to widespread soil erosion, loss of plant diversity, and invasion by exotic species. Degraded grassland conditions can be very persistent, even after livestock use has ceased. For example, in national parks on the Colorado Plateau, livestock have been excluded for decades, but soil and native plants have not recovered on...
By
Land Management Research Program, Species Management Research Program, Southwest Biological Science Center
New Approaches for Restoring Colorado Plateau Grasslands

New Approaches for Restoring Colorado Plateau Grasslands

Historic over-grazing of arid grasslands in the Intermountain West has led to widespread soil erosion, loss of plant diversity, and invasion by exotic species. Degraded grassland conditions can be very persistent, even after livestock use has ceased. For example, in national parks on the Colorado Plateau, livestock have been excluded for decades, but soil and native plants have not recovered on...
Learn More

Vegetation, soil, and horizontal mass flux data from the Well Pad Reclamation and Research field trials in the Uinta Basin, Utah and the Uranium Mill Tailings Remedial Action field trials near Moab, Utah Vegetation, soil, and horizontal mass flux data from the Well Pad Reclamation and Research field trials in the Uinta Basin, Utah and the Uranium Mill Tailings Remedial Action field trials near Moab, Utah

These data were compiled for the Well Pad Reclamation and Research (WPRR) project in the Uinta Basin, Utah and related experiments conducted at the Uranium Mill Tailings Remedial Action (UMTRA) project near Moab, Utah. WPRR is a collaborative and co-production of science set of experiments in the Uinta Basin that includes the US Geological Survey (USGS), the Bureau of Land Management...
By
Southwest Biological Science Center

Vegetation composition, soil characteristics, horizontal mass flux, and weather data (2018-2024) from a dryland reclamation experiment at a former uranium mine in northern Arizona, USA Vegetation composition, soil characteristics, horizontal mass flux, and weather data (2018-2024) from a dryland reclamation experiment at a former uranium mine in northern Arizona, USA

These data were compiled as part of an experimental study investigating alternative methods to dryland reclamation. The objective of our study was to evaluate the effects of conventional vs alternative approaches alone and in combination that included different seeding methods, seed mixes, and biological soil crust (biocrust) inoculation. These data were collected within the footprint of...
By
Southwest Biological Science Center

State and Transition Classifications for Ecological Sites in the Upper Colorado River Basin, USA State and Transition Classifications for Ecological Sites in the Upper Colorado River Basin, USA

These data were compiled to support systematic analysis of ecological state and transition dynamics at the landscape scale in the Upper Colorado River Basin using published Natural Resources Conservation Service (NRCS) Ecological Site Descriptions (ESDs). Ecological sites are soil and climate-based classes of land that differ in potential plant communities and responses to disturbance...
By
Southwest Biological Science Center

Vegetation and soil data in the Canyonlands Research Center and adjoining arid, semiarid, and montane rangelands of San Juan County, Utah, USA Vegetation and soil data in the Canyonlands Research Center and adjoining arid, semiarid, and montane rangelands of San Juan County, Utah, USA

These data were compiled for upland vegetation and soil condition assessment and monitoring in arid, semiarid, and montane areas of northwest San Juan County, Utah, USA, near The Nature Conservancy's Canyonlands Research Center (CRC) at Dugout Ranch. The sampling area includes the Needles District of Canyonlands National Park, the Indian Creek Allotment of the Bureau of Land Management...
By
Ecosystems Land Change Science Program, Southwest Biological Science Center

Vegetation cover and composition data in environments surrounding uranium mines in the Grand Canyon ecosystem, USA Vegetation cover and composition data in environments surrounding uranium mines in the Grand Canyon ecosystem, USA

This data package contains the final combined field sampling data collected by the USGS July 2013 and July-August 2015 at three active uranium mines (Canyon Rim Mine, Pinenut Mine, and Arizona 1 Mine) as well as two reference sites (Little Robinson Tank and EZ2 Pipe) in northwestern Arizona. Vegetation and soils were assessed by using line-point intersect (LPI) methods and estimates of...
By
Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Southwest Biological Science Center

Alternative approaches to dryland reclamation enhance vegetation cover and soil stability at a former uranium mine Alternative approaches to dryland reclamation enhance vegetation cover and soil stability at a former uranium mine

Introduction Conventional reclamation methods to recover dryland ecosystems after mineral extraction often have low success. Alternative reclamation techniques may help overcome the many challenges to establishing persistent native vegetation and stable soils. Objectives Compare conventional reclamation approaches that focus primarily on soil stabilization to alternative approaches that...
Authors
Kathryn Delores Eckhoff, Rebecca K. Mann, Seth M. Munson, Katherine Walton-Day, Jo Ellen Hinck, Michael C. Duniway
By
Ecosystems Mission Area, Southwest Biological Science Center

Vegetation cover and composition in environments surrounding uranium mines in the Grand Canyon ecosystem, Northern Arizona Vegetation cover and composition in environments surrounding uranium mines in the Grand Canyon ecosystem, Northern Arizona

Mining uranium from breccia-pipe deposits in the greater Grand Canyon region has occurred since the mid-1900s. However, possible ecosystem contamination with harmful levels of radionuclides may have occurred due to mining activities in the 21st century. In response, a 20-year Federal moratorium on new mining claims in the Grand Canyon watershed was initiated in 2012, to allow time to...
Authors
Rebecca K. Mann, Michael C. Duniway, Jo Ellen Hinck
By
Ecosystems Mission Area, Southwest Biological Science Center

Annotated bibliography of scientific research relevant to oil and gas reclamation best management practices in the western United States, published from 1969 through 2020 Annotated bibliography of scientific research relevant to oil and gas reclamation best management practices in the western United States, published from 1969 through 2020

Integrating recent scientific knowledge into management decisions supports effective natural resource management and can lead to better resource outcomes. However, finding and accessing scientific knowledge can be time consuming and costly. To assist in this process, the U.S. Geological Survey has created a series of annotated bibliographies on topics of management concern for lands in...
Authors
Rebecca K. Mann, Molly L. McCormick, Seth M. Munson, Hillary F. Cooper, Lee C. Bryant, Jared K. Swenson, Laura A. Johnston, Savannah L. Wilson, Michael C. Duniway
By
Ecosystems Mission Area, Southwest Biological Science Center

Rangeland pitting for revegetation and annual weed control Rangeland pitting for revegetation and annual weed control

On the Ground
Authors
Danielle Bilyeu Johnston, Rebecca K. Mann
By
Ecosystems Mission Area, Southwest Biological Science Center

Oil and gas reclamation—Operations, monitoring methods, and standards Oil and gas reclamation—Operations, monitoring methods, and standards

This publication provides broad guidance for surface management of oil and gas development with a focus on promoting successful reclamation. Successful reclamation depends on sound best management practices, clear standards and expectations, defensible monitoring for effectiveness, and management of production facilities to minimize surface disturbance. This publication provides specific
Authors
Randi C. Lupardus, Janna Simonsen, Gordon Toevs, Barbara Sterling, Zachary H. Bowen, Zoe Davidson, Steve E. Hanser, Emily Kachergis, Alexander Laurence-Traynor, Nika Lepak, Rebecca K. Mann, Aleta Nafus, David S. Pilliod, Michael C. Duniway
By
Ecosystems Mission Area, Southwest Biological Science Center

Campfire Conversations at the 2020 annual meeting: Insights & lessons learned from “cuss-and-discuss” rather than “chalk-and-talk” Campfire Conversations at the 2020 annual meeting: Insights & lessons learned from “cuss-and-discuss” rather than “chalk-and-talk”

• The 2020 SRM Annual Meeting piloted “Campfire Conversation,” round-table discussions styled after the World Café approach. • The event attracted 280 attendees and enabled multidirectional knowledge exchange (i.e., “cuss and discuss”), rather than one-way “chalk-and-talk.” Attendees participated in three 20-minute facilitated round-table discussions around three topics they selected...
Authors
Terri T. Schulz, Hailey Wilmer, Heather M. Yocum, Eric M. Winford, Dannele Peck, Anna Clare Monlezun, Heidi Schmalz, Toni Klemm, Kathleen Epstein, Vincent Jansen, Windy Kelley, Retta A. Bruegger, Steven Fick, Joseph Gazing Wolf, Joshua Grace, Rebecca K. Mann, Justin D. Derner
By
Ecosystems Mission Area, Southwest Biological Science Center

Beyond traditional ecological restoration on the Colorado Plateau Beyond traditional ecological restoration on the Colorado Plateau

The Colorado Plateau is one of North America's five major deserts, encompassing 340,000 km2 of the western U.S., and offering many opportunities for restoration relevant to researchers and land managers in drylands around the globe. The Colorado Plateau is comprised of vast tracts of public land managed by local, state, and federal agencies that oversee a wide range of activities (e.g...
Authors
Daniel E. Winkler, Dana M. Backer, Jayne Belnap, John B. Bradford, Bradley J. Butterfield, Stella M. Copeland, Michael C. Duniway, Akasha M. Faist, Stephen E. Fick, Scott L. Jensen, Andrea T. Kramer, Rebecca Mann, Robert Massatti, Molly L. McCormick, Seth M. Munson, Peggy Olwell, Steve D. Parr, Alix Pfennigwerth, Adrienne M. Pilmanis, Bryce A. Richardson, Ella Samuel, Kathy See, Kristina E. Young, Sasha C. Reed
By
Ecosystems Mission Area, Southwest Biological Science Center

Field Evaluations of Sampling Methods for Long-Term Monitoring of Upland Ecosystems on the Colorado Plateau Field Evaluations of Sampling Methods for Long-Term Monitoring of Upland Ecosystems on the Colorado Plateau

To inform planning for long-term ecological monitoring, we sampled vegetation and soil-surface attributes across a range of terrestrial ecosystems (physiognomic types) in seven National Park Service units on the Colorado Plateau. Primary objectives were (1) to evaluate a suite of sampling methods according to measures of repeatability, efficiency, and impacts on plot conditions; and (2)...
Authors
Mark E. Miller, Dana L. Witwicki, Rebecca K. Mann, Nicole J. Tancreto
By
Ecosystems Mission Area, Southwest Biological Science Center

Ecological Investigations of the Federally Endangered Shivwits Milk-Vetch (Astragalus ampullarioides)--2006 Annual Report Ecological Investigations of the Federally Endangered Shivwits Milk-Vetch (Astragalus ampullarioides)--2006 Annual Report

Astragalus ampullarioides (Welsh) Welsh, the Shivwits milk-vetch, is an herbaceous perennial legume that was listed as federally endangered in September 2001. Known populations of this edaphic endemic species are restricted to Washington County, Utah, with the majority of occurrences found on gently sloping outcrops of the Triassic Petrified Forest Member of the Chinle Formation at the...
Authors
Mark E. Miller, Rebecca K. Mann, Harland L. Goldstein, James D. Yount
By
Ecosystems Mission Area, Southwest Biological Science Center

Science and Products

Restoration plots

Well Pad Reclamation and Research

Reclamation on lands impacted by energy development is complicated and extremely challenging in arid environments due to unstable soils, exotic species, and low and variable precipitation. The reclamation tactics employed by energy operators vary widely and outcomes can differ across plant communities and soil types. In order to address the knowledge gaps regarding how to successfully and...
By
Ecosystems Mission Area, Land Management Research Program, Species Management Research Program, Southwest Biological Science Center
Well Pad Reclamation and Research

Well Pad Reclamation and Research

Reclamation on lands impacted by energy development is complicated and extremely challenging in arid environments due to unstable soils, exotic species, and low and variable precipitation. The reclamation tactics employed by energy operators vary widely and outcomes can differ across plant communities and soil types. In order to address the knowledge gaps regarding how to successfully and...
Learn More
An experimental garden nestled against the La Salle Mountains in Utah.

RestoreNet: Distributed Field Trial Network for Dryland Restoration

Starting in 2017, U.S. Geological Survey (USGS) researchers and land managers are co-producing a network of restoration field trial sites on Department of Interior (DOI) and surrounding lands in the southwestern U.S. The network systematically tests restoration treatments across a broad range of environmental gradients. Each site in the network is used to test suitable seed mixes and treatments...
By
Ecosystems Mission Area, Land Management Research Program, Southwest Biological Science Center
RestoreNet: Distributed Field Trial Network for Dryland Restoration

RestoreNet: Distributed Field Trial Network for Dryland Restoration

Starting in 2017, U.S. Geological Survey (USGS) researchers and land managers are co-producing a network of restoration field trial sites on Department of Interior (DOI) and surrounding lands in the southwestern U.S. The network systematically tests restoration treatments across a broad range of environmental gradients. Each site in the network is used to test suitable seed mixes and treatments...
Learn More
A healthy native sand dropseed grass inside a connectivity modifier consisting of small mesh screens that trap seeds

New Approaches for Restoring Colorado Plateau Grasslands

Historic over-grazing of arid grasslands in the Intermountain West has led to widespread soil erosion, loss of plant diversity, and invasion by exotic species. Degraded grassland conditions can be very persistent, even after livestock use has ceased. For example, in national parks on the Colorado Plateau, livestock have been excluded for decades, but soil and native plants have not recovered on...
By
Land Management Research Program, Species Management Research Program, Southwest Biological Science Center
New Approaches for Restoring Colorado Plateau Grasslands

New Approaches for Restoring Colorado Plateau Grasslands

Historic over-grazing of arid grasslands in the Intermountain West has led to widespread soil erosion, loss of plant diversity, and invasion by exotic species. Degraded grassland conditions can be very persistent, even after livestock use has ceased. For example, in national parks on the Colorado Plateau, livestock have been excluded for decades, but soil and native plants have not recovered on...
Learn More

Vegetation, soil, and horizontal mass flux data from the Well Pad Reclamation and Research field trials in the Uinta Basin, Utah and the Uranium Mill Tailings Remedial Action field trials near Moab, Utah Vegetation, soil, and horizontal mass flux data from the Well Pad Reclamation and Research field trials in the Uinta Basin, Utah and the Uranium Mill Tailings Remedial Action field trials near Moab, Utah

These data were compiled for the Well Pad Reclamation and Research (WPRR) project in the Uinta Basin, Utah and related experiments conducted at the Uranium Mill Tailings Remedial Action (UMTRA) project near Moab, Utah. WPRR is a collaborative and co-production of science set of experiments in the Uinta Basin that includes the US Geological Survey (USGS), the Bureau of Land Management...
By
Southwest Biological Science Center

Vegetation composition, soil characteristics, horizontal mass flux, and weather data (2018-2024) from a dryland reclamation experiment at a former uranium mine in northern Arizona, USA Vegetation composition, soil characteristics, horizontal mass flux, and weather data (2018-2024) from a dryland reclamation experiment at a former uranium mine in northern Arizona, USA

These data were compiled as part of an experimental study investigating alternative methods to dryland reclamation. The objective of our study was to evaluate the effects of conventional vs alternative approaches alone and in combination that included different seeding methods, seed mixes, and biological soil crust (biocrust) inoculation. These data were collected within the footprint of...
By
Southwest Biological Science Center

State and Transition Classifications for Ecological Sites in the Upper Colorado River Basin, USA State and Transition Classifications for Ecological Sites in the Upper Colorado River Basin, USA

These data were compiled to support systematic analysis of ecological state and transition dynamics at the landscape scale in the Upper Colorado River Basin using published Natural Resources Conservation Service (NRCS) Ecological Site Descriptions (ESDs). Ecological sites are soil and climate-based classes of land that differ in potential plant communities and responses to disturbance...
By
Southwest Biological Science Center

Vegetation and soil data in the Canyonlands Research Center and adjoining arid, semiarid, and montane rangelands of San Juan County, Utah, USA Vegetation and soil data in the Canyonlands Research Center and adjoining arid, semiarid, and montane rangelands of San Juan County, Utah, USA

These data were compiled for upland vegetation and soil condition assessment and monitoring in arid, semiarid, and montane areas of northwest San Juan County, Utah, USA, near The Nature Conservancy's Canyonlands Research Center (CRC) at Dugout Ranch. The sampling area includes the Needles District of Canyonlands National Park, the Indian Creek Allotment of the Bureau of Land Management...
By
Ecosystems Land Change Science Program, Southwest Biological Science Center

Vegetation cover and composition data in environments surrounding uranium mines in the Grand Canyon ecosystem, USA Vegetation cover and composition data in environments surrounding uranium mines in the Grand Canyon ecosystem, USA

This data package contains the final combined field sampling data collected by the USGS July 2013 and July-August 2015 at three active uranium mines (Canyon Rim Mine, Pinenut Mine, and Arizona 1 Mine) as well as two reference sites (Little Robinson Tank and EZ2 Pipe) in northwestern Arizona. Vegetation and soils were assessed by using line-point intersect (LPI) methods and estimates of...
By
Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, Southwest Biological Science Center

Alternative approaches to dryland reclamation enhance vegetation cover and soil stability at a former uranium mine Alternative approaches to dryland reclamation enhance vegetation cover and soil stability at a former uranium mine

Introduction Conventional reclamation methods to recover dryland ecosystems after mineral extraction often have low success. Alternative reclamation techniques may help overcome the many challenges to establishing persistent native vegetation and stable soils. Objectives Compare conventional reclamation approaches that focus primarily on soil stabilization to alternative approaches that...
Authors
Kathryn Delores Eckhoff, Rebecca K. Mann, Seth M. Munson, Katherine Walton-Day, Jo Ellen Hinck, Michael C. Duniway
By
Ecosystems Mission Area, Southwest Biological Science Center

Vegetation cover and composition in environments surrounding uranium mines in the Grand Canyon ecosystem, Northern Arizona Vegetation cover and composition in environments surrounding uranium mines in the Grand Canyon ecosystem, Northern Arizona

Mining uranium from breccia-pipe deposits in the greater Grand Canyon region has occurred since the mid-1900s. However, possible ecosystem contamination with harmful levels of radionuclides may have occurred due to mining activities in the 21st century. In response, a 20-year Federal moratorium on new mining claims in the Grand Canyon watershed was initiated in 2012, to allow time to...
Authors
Rebecca K. Mann, Michael C. Duniway, Jo Ellen Hinck
By
Ecosystems Mission Area, Southwest Biological Science Center

Annotated bibliography of scientific research relevant to oil and gas reclamation best management practices in the western United States, published from 1969 through 2020 Annotated bibliography of scientific research relevant to oil and gas reclamation best management practices in the western United States, published from 1969 through 2020

Integrating recent scientific knowledge into management decisions supports effective natural resource management and can lead to better resource outcomes. However, finding and accessing scientific knowledge can be time consuming and costly. To assist in this process, the U.S. Geological Survey has created a series of annotated bibliographies on topics of management concern for lands in...
Authors
Rebecca K. Mann, Molly L. McCormick, Seth M. Munson, Hillary F. Cooper, Lee C. Bryant, Jared K. Swenson, Laura A. Johnston, Savannah L. Wilson, Michael C. Duniway
By
Ecosystems Mission Area, Southwest Biological Science Center

Rangeland pitting for revegetation and annual weed control Rangeland pitting for revegetation and annual weed control

On the Ground
Authors
Danielle Bilyeu Johnston, Rebecca K. Mann
By
Ecosystems Mission Area, Southwest Biological Science Center

Oil and gas reclamation—Operations, monitoring methods, and standards Oil and gas reclamation—Operations, monitoring methods, and standards

This publication provides broad guidance for surface management of oil and gas development with a focus on promoting successful reclamation. Successful reclamation depends on sound best management practices, clear standards and expectations, defensible monitoring for effectiveness, and management of production facilities to minimize surface disturbance. This publication provides specific
Authors
Randi C. Lupardus, Janna Simonsen, Gordon Toevs, Barbara Sterling, Zachary H. Bowen, Zoe Davidson, Steve E. Hanser, Emily Kachergis, Alexander Laurence-Traynor, Nika Lepak, Rebecca K. Mann, Aleta Nafus, David S. Pilliod, Michael C. Duniway
By
Ecosystems Mission Area, Southwest Biological Science Center

Campfire Conversations at the 2020 annual meeting: Insights & lessons learned from “cuss-and-discuss” rather than “chalk-and-talk” Campfire Conversations at the 2020 annual meeting: Insights & lessons learned from “cuss-and-discuss” rather than “chalk-and-talk”

• The 2020 SRM Annual Meeting piloted “Campfire Conversation,” round-table discussions styled after the World Café approach. • The event attracted 280 attendees and enabled multidirectional knowledge exchange (i.e., “cuss and discuss”), rather than one-way “chalk-and-talk.” Attendees participated in three 20-minute facilitated round-table discussions around three topics they selected...
Authors
Terri T. Schulz, Hailey Wilmer, Heather M. Yocum, Eric M. Winford, Dannele Peck, Anna Clare Monlezun, Heidi Schmalz, Toni Klemm, Kathleen Epstein, Vincent Jansen, Windy Kelley, Retta A. Bruegger, Steven Fick, Joseph Gazing Wolf, Joshua Grace, Rebecca K. Mann, Justin D. Derner
By
Ecosystems Mission Area, Southwest Biological Science Center

Beyond traditional ecological restoration on the Colorado Plateau Beyond traditional ecological restoration on the Colorado Plateau

The Colorado Plateau is one of North America's five major deserts, encompassing 340,000 km2 of the western U.S., and offering many opportunities for restoration relevant to researchers and land managers in drylands around the globe. The Colorado Plateau is comprised of vast tracts of public land managed by local, state, and federal agencies that oversee a wide range of activities (e.g...
Authors
Daniel E. Winkler, Dana M. Backer, Jayne Belnap, John B. Bradford, Bradley J. Butterfield, Stella M. Copeland, Michael C. Duniway, Akasha M. Faist, Stephen E. Fick, Scott L. Jensen, Andrea T. Kramer, Rebecca Mann, Robert Massatti, Molly L. McCormick, Seth M. Munson, Peggy Olwell, Steve D. Parr, Alix Pfennigwerth, Adrienne M. Pilmanis, Bryce A. Richardson, Ella Samuel, Kathy See, Kristina E. Young, Sasha C. Reed
By
Ecosystems Mission Area, Southwest Biological Science Center

Field Evaluations of Sampling Methods for Long-Term Monitoring of Upland Ecosystems on the Colorado Plateau Field Evaluations of Sampling Methods for Long-Term Monitoring of Upland Ecosystems on the Colorado Plateau

To inform planning for long-term ecological monitoring, we sampled vegetation and soil-surface attributes across a range of terrestrial ecosystems (physiognomic types) in seven National Park Service units on the Colorado Plateau. Primary objectives were (1) to evaluate a suite of sampling methods according to measures of repeatability, efficiency, and impacts on plot conditions; and (2)...
Authors
Mark E. Miller, Dana L. Witwicki, Rebecca K. Mann, Nicole J. Tancreto
By
Ecosystems Mission Area, Southwest Biological Science Center

Ecological Investigations of the Federally Endangered Shivwits Milk-Vetch (Astragalus ampullarioides)--2006 Annual Report Ecological Investigations of the Federally Endangered Shivwits Milk-Vetch (Astragalus ampullarioides)--2006 Annual Report

Astragalus ampullarioides (Welsh) Welsh, the Shivwits milk-vetch, is an herbaceous perennial legume that was listed as federally endangered in September 2001. Known populations of this edaphic endemic species are restricted to Washington County, Utah, with the majority of occurrences found on gently sloping outcrops of the Triassic Petrified Forest Member of the Chinle Formation at the...
Authors
Mark E. Miller, Rebecca K. Mann, Harland L. Goldstein, James D. Yount
By
Ecosystems Mission Area, Southwest Biological Science Center
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