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Full-Text Articles in Physical Sciences and Mathematics

Environmental Factors Associated With Triploid Aspen Occurrence In Intermountain West Landscapes, Karen E. Mock, James A. Walton Apr 2024

Environmental Factors Associated With Triploid Aspen Occurrence In Intermountain West Landscapes, Karen E. Mock, James A. Walton

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Polyploidy is common among plants and can contribute to physiological and morphological differences, altering how plants respond to environmental changes, promoting genetic diversification, and even species radiation. Quaking aspen (Populus tremuloides), a keystone species associated with high plant and animal diversity is frequently found in mixed diploid/triploid populations in the Intermountain West. High mortality rates and widespread population declines in aspen are of increasing concern in the Intermountain West, often ascribed to changing climates and drought stress events. The goal of this study was to better understand environmental factors influencing the distribution of triploid aspen population in the Intermountain West. …


Supply, Demand, And Fiscal Sustainability Of Outdoor Recreation In Utah, Jordan W. Smith, Chris Monz Apr 2024

Supply, Demand, And Fiscal Sustainability Of Outdoor Recreation In Utah, Jordan W. Smith, Chris Monz

Environment and Society Faculty Publications

Because Utah's outdoor recreation destinations are managed by several different federal and state agencies, there is no comprehensive and consistent information on the amount and types of outdoor recreation resources available within the state. Additionally, there has been no research to date on how state programs whose revenues are dependent on outdoor recreation activity, are likely to fare in the coming years. This report begins to address these limitations by: 1) compiling and synthesizing data that characterize the amount and location of outdoor recreation resources throughout the state; and 2) presenting the results of a suite of econometric forecasting models …


Data From: Root Distributions Predict Shrub-Steppe Responses To Precipitation Intensity, Andrew Kulmatiski, Karen H. Beard Nov 2023

Data From: Root Distributions Predict Shrub-Steppe Responses To Precipitation Intensity, Andrew Kulmatiski, Karen H. Beard

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Precipitation events are becoming more intense around the world, changing the way water moves through soils and plants. Plant rooting strategies that sustain water uptake under these conditions are likely to become more abundant (e.g., shrub encroachment). Yet, it remains difficult to predict species responses to climate change because we typically do not know where active roots are located or how much water they absorb. Here, we applied a water tracer experiment to describe forb, grass, and shrub root distributions. These measurements were made in 8 m by 8 m field shelters with low or high precipitation intensity. We used …


Utahns Strongly Support Renewable Energy Sources Such As Solar And Wind, Elizabeth Brunner, Stacia Ryder Oct 2023

Utahns Strongly Support Renewable Energy Sources Such As Solar And Wind, Elizabeth Brunner, Stacia Ryder

Utah People and Environment Poll (UPEP)

Utah was the fastest-growing state in the nation by population between 2010 and 2020.1 This growing population is bringing increased demand for energy. The build out of Utah's electric vehicle (EV) infrastructure, with the state aiming to site electric vehicle charging stations at least every 50 miles along its interstate highway system by the end of 2025, will also increase energy demand. This growth will equate to increased carbon emissions if Utah does not change its electricity mix, which is currently composed of primarily carbon-emitting sources. As of 2022 (see Figure 1), 53% of Utah's total electricity net generation …


Collaborative Development Of Utah's Outdoor Recreation Strategic Plan: Process And Findings From 14 Regional Workshops, Jordan W. Smith, Jake Powell, Casey Trout, Nate Trauntvein, Rachel Hall, Wayne Freimund Aug 2023

Collaborative Development Of Utah's Outdoor Recreation Strategic Plan: Process And Findings From 14 Regional Workshops, Jordan W. Smith, Jake Powell, Casey Trout, Nate Trauntvein, Rachel Hall, Wayne Freimund

Environment and Society Faculty Publications

Outdoor recreation within Utah is managed and provided through a patchwork of federal and state agencies as well as county and municipal governments. Each of these entities manages outdoor recreation following different mandates and internal objectives. Rarely has there been an opportunity for representatives from federal, state, county, and local governments to sit down, discuss the long-standing and emerging challenges they face, and collectively develop ideas about how to work towards less-disparate and more aligned outdoor recreation management systems. In late 2022 and early 2023, we convened hundreds of land managers, outdoor recreation and tourism professionals, and elected officials across …


Allocation Of U.S. Biomass Production To Food, Feed, Fiber, Fuel And Exports, Christopher L. Lant, Suman Paudel, Kaeli Mueller, Grace Larson, Gustavo A. Ovando-Montejo, Jennifer E. Givens Mar 2023

Allocation Of U.S. Biomass Production To Food, Feed, Fiber, Fuel And Exports, Christopher L. Lant, Suman Paudel, Kaeli Mueller, Grace Larson, Gustavo A. Ovando-Montejo, Jennifer E. Givens

Environment and Society Faculty Publications

This paper analyzes the end uses—food, feed, fiber, fuel, and exports—of biomass production in the U.S. in 1997, 2002, 2007, and 2012. They are also analyzed at the state level in 2012. Biomass production is measured as human appropriation of net primary production (HANPP), an ecological footprint measured as carbon fixed through photosynthesis, derived from data on crop, timber and grazing yields. HANPP was allocated to end uses using publicly available sources from the U.S. Department of Agriculture and internet-based sources publishing data on agricultural trade. HANPP was 717–834 megatons (MT) of carbon per year, which comprised 515–615 MT of …


Characteristics Of Anglers And Angling Preferences In Utah: Results From The 2021-2022 Utah Angler Survey, Jordan Smith, Chase C. Lamborn, Will Rempel, Zachary D. Miller Jan 2023

Characteristics Of Anglers And Angling Preferences In Utah: Results From The 2021-2022 Utah Angler Survey, Jordan Smith, Chase C. Lamborn, Will Rempel, Zachary D. Miller

Environment and Society Faculty Publications

In the face of a diminishing resource base and increased demand from anglers, the state of Utah is looking for biologically feasible, economical, and publicly supported solutions to address the angling supply and demand mismatch. Using data from an extensive year-long survey effort, the report details information about the characteristics, behaviors, and preferences of Utah’s licensed. The report also details the types of motivations that are fundamental to the Utah fishing experience. The findings show anglers can be classified by their motivations into five relatively distinct groups – Explorers, Social Anglers, Catch Focused Anglers, Ambivalent Anglers, …


An Overview Of State Funding For Outdoor Recreation And Tourism In Utah, Jordan W. Smith, Casey Trout Jan 2023

An Overview Of State Funding For Outdoor Recreation And Tourism In Utah, Jordan W. Smith, Casey Trout

Environment and Society Faculty Publications

The state of Utah supports outdoor recreation and tourism through legislative appropriations, revenue generating mechanisms, taxes, and federal programs that are administered by the state. This review provides an overview of the various programs and funding mechanisms that currently exist within Utah, describes how and to what extent they are funded, outlines how they support outdoor recreation and tourism, and highlights opportunities where the state can strategically refine or build upon them.


Future Of Great Salt Lake Survey, Lisa W. Welsh, Joanna Endter-Wada, Karin M. Kettenring, Anna Mcentire Jan 2023

Future Of Great Salt Lake Survey, Lisa W. Welsh, Joanna Endter-Wada, Karin M. Kettenring, Anna Mcentire

Reports

The Future of Great Salt Lake Survey was conducted in fall 2022 when state and global attention on Great Salt Lake was ramping up, following record lows of the elevation of lake water levels. In the survey, we asked Utahns their opinions on securing water for Great Salt Lake and focused on strategies that individuals, local communities, and the state of Utah could pursue. When it comes to how water is used and managed in Utah, there are multiple actors and institutions who all make decisions and have authority or ability to take different actions. While the state of …


An Assessment Of The Location Of The Bears Ears National Monument Cultural Center, Jordan W. Smith, Eunjung Yang, Anna B. Miller Sep 2022

An Assessment Of The Location Of The Bears Ears National Monument Cultural Center, Jordan W. Smith, Eunjung Yang, Anna B. Miller

Environment and Society Faculty Publications

A cultural center at Bears Ears National Monument, if well planned, could serve as an anchor destination through which visitors could learn about, experience, and appreciate the cultures, histories, and landscapes that define southeastern Utah. A cultural center also holds the potential to bolster the regional economy, by signaling a long-term investment in the sustainability of the region’s outdoor recreation and tourism industry. Our intent with this analysis is to establish a foundational understanding of potential locations for a cultural center. We develop and analyze a set of cultural, environmental, and economic metrics that can be used to shape ongoing …


2022 Report To The Governor: Utah's Land, Water, And Air, Janet Quinney Lawson Institute For Land, Water, And Air Jan 2022

2022 Report To The Governor: Utah's Land, Water, And Air, Janet Quinney Lawson Institute For Land, Water, And Air

Reports

This report serves as a 2022 snapshot of key issues and concerns with Utah's shared resources. It highlights gathered data that is available to provide context to these issues, as well as identifies areas where more study is needed. Addressing these challenges will enable Utah policymakers and other statewide leaders to make informed decisions for the future. Under the authorship of 37 researchers and experts and the general guidance of 38 advisory committee members, the report outlines 26 issues and trends to pay attention to in the coming months and years.


Data From: Yellow Air Day Advisory Study, Arthur J. Caplan Aug 2021

Data From: Yellow Air Day Advisory Study, Arthur J. Caplan

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Using a dataset consisting of daily vehicle trips, PM2.5 concentrations, along with a host of climactic control variables, we test the hypothesis that “yellow air day” advisories provided by the Utah Division of Air Quality resulted in subsequent reductions in vehicle trips taken during northern Utah’s winter-inversion seasons in the early 2000s. Winter inversions occur in northern Utah when climactic conditions are such that PM2.5 concentrations (derived mainly from vehicle emissions) become trapped in the lower atmosphere, leading to unhealthy air quality (concentrations of at least 35 µg/m3) over a span of what are called “red air days”. When concentrations …


Management Innovations For Resilient Public Rangelands: Adoption Constraints And Considerations For Interagency Diffusion, Gwendŵr R. Meredith, Mark W. Brunson, Stuart P. Hardegree Jan 2021

Management Innovations For Resilient Public Rangelands: Adoption Constraints And Considerations For Interagency Diffusion, Gwendŵr R. Meredith, Mark W. Brunson, Stuart P. Hardegree

Environment and Society Faculty Publications

Maintaining healthy rangeland ecosystems requires adaptive co-management at the landscape scale. Because the majority of western rangelands are publicly owned, it is critical that federal land management agencies work together in generating and sharing information. Promotion and communication of rangeland management innovations among agencies is one means of sharing information. Two rangeland management innovations, the Weather-Centric Restoration Tool and Interpreting Indicators of Rangeland Health, were studied in order to better understand agency adoption decisions and barriers to diffusion of the innovations across agencies. Using a mixed qualitative methodology, we interviewed land managers across the floristic Great Basin and in southeastern …


Data For "Arch_Covid_Crowding_Vc", Wayne Freimund, Zachary D. Miller Jan 2021

Data For "Arch_Covid_Crowding_Vc", Wayne Freimund, Zachary D. Miller

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Monitoring of visitor use in Arches National Park to assess social distancing behaviors of visitors during the COVID-19 pandemic.


Impacts Of Climate Change On Multiple Use Management Of Bureau Of Land Management Land In The Intermountain West, Usa, Elaine M. Brice, Brett A. Miller, Hongchao Zhang, Kirsten Goldstein, Scott N. Zimmer, Guenchik J. Grosklos, Patrick Belmont, Courtney G. Flint, Jennifer E. Givens, Peter B. Adler, Mark W. Brunson, Jordan W. Smith Nov 2020

Impacts Of Climate Change On Multiple Use Management Of Bureau Of Land Management Land In The Intermountain West, Usa, Elaine M. Brice, Brett A. Miller, Hongchao Zhang, Kirsten Goldstein, Scott N. Zimmer, Guenchik J. Grosklos, Patrick Belmont, Courtney G. Flint, Jennifer E. Givens, Peter B. Adler, Mark W. Brunson, Jordan W. Smith

Watershed Sciences Faculty Publications

Although natural resource managers are concerned about climate change, many are unable to adequately incorporate climate change science into their adaptation strategies or management plans, and are not always aware of or do not employ the most current scientific knowledge. One of the most prominent natural resource management agencies in the United States is the Bureau of Land Management (BLM), which is tasked with managing over 248 million acres (>1 million km2) of public lands for multiple, often conflicting, uses. Climate change will affect the sustainability of many of these land uses and could further increase conflicts …


Genetic Variation At The Species And Population Levels In The Rocky Mountain Ridged Mussel (Gonidea Angulata) – Supplementary Material, James A. Walton, Karen E. Mock, Steven F. R. Brownlee, Jon H. Mageroy, Greg Wilson, Ian R. Walker Nov 2020

Genetic Variation At The Species And Population Levels In The Rocky Mountain Ridged Mussel (Gonidea Angulata) – Supplementary Material, James A. Walton, Karen E. Mock, Steven F. R. Brownlee, Jon H. Mageroy, Greg Wilson, Ian R. Walker

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Freshwater mussels in western North America are threatened by water diversions, climate change, loss of required host fish, and other factors, and have experienced marked decline in the past several decades. All four of the primary lineages (potentially species) of freshwater mussels in the western U.S. and Canada are widespread and have somewhat generalist host fish requirements. Of these lineages, perhaps the most poorly understood and of greatest conservation concern is Gonidea angulata (Rocky Mountain ridged mussel). Gonidea is a monotypic genus occurring only in the western continental U.S. and southern Canada. Here we describe the patterns of genetic variation …


Coqui Frog Predator Avoidance And Recognition, Karen H. Beard Jul 2020

Coqui Frog Predator Avoidance And Recognition, Karen H. Beard

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The purpose of this study was to determine whether coqui frogs from their non-native range responded to native predators the same way as frogs from their native range. Frogs were collected from two sites in Puerto Rico (El Yunque and Rio Abajo) in May 2006 and one site in Hawaii (Hilo) in June 2006. At each site, frogs were collected from a high (> 700 m) and low (< 300 m) elevation population. Of the total number of frogs collected, 100 males were randomly selected to be used in this study (45 and 55 from Hawaii and Puerto Rico, respectively). Three tailless whipscorpions (Phrynus longipes) and three tarantulas (Avicularia laeta) were also collected in Puerto Rico in field sites where frogs were collected and shipped back to a laboratory.


Assessing The Potential For Industrial Activities To Disturb Polar Bears Denning On The Arctic Coastal Plain, Patricia A. Terletzky-Gese Apr 2020

Assessing The Potential For Industrial Activities To Disturb Polar Bears Denning On The Arctic Coastal Plain, Patricia A. Terletzky-Gese

Funded Research Records

No abstract provided.


Collaborative Research: A General Approach To Partitioning Contributions From Multiple Drivers Affecting Individuals, Populations, And Communities, Peter B. Adler Feb 2020

Collaborative Research: A General Approach To Partitioning Contributions From Multiple Drivers Affecting Individuals, Populations, And Communities, Peter B. Adler

Funded Research Records

No abstract provided.


Isotope Summary Data, Andrew Kulmatiski Nov 2019

Isotope Summary Data, Andrew Kulmatiski

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Data includes deuterium tracer uptake data from plant species at the US Sheep Experiment Station.


Gas Production Kinetics And In Vitro Degradability Of Tannin-Containing Legumes, Alfalfa And Their Mixtures., Sebastian Lagrange, S. Lobón, Juan J. Villalba May 2019

Gas Production Kinetics And In Vitro Degradability Of Tannin-Containing Legumes, Alfalfa And Their Mixtures., Sebastian Lagrange, S. Lobón, Juan J. Villalba

Wildland Resources Student Research

The aim of this study was to determine in vitro ruminal degradability and gas production kinetics of sainfoin (Onobrichis viciifolia; SF), birdsfoot trefoil (Lotus corniculatus; BFT), alfalfa (Medicago sativa L.; ALF) and their binary or trinary mixtures using the gas production technique. The proportions in the mixtures represented: (1) those selected by lambs in a free-choice experiment (70:30 and 50:35:15 ratios for binary and trinary combinations, respectively), or (2) equal proportions (50:50 or 33:33:33 ratios for binary or trinary mixtures, respectively). Organic matter digestibility was greater in ALF and BFT than in SF (0.791 and 0.796 vs …


Soil And Vegetation Survey Of Antelope Pasture, Curlew Grazing Allotment, Oneida County, Id, Merran Owen, Kari E. Veblen, Thomas A. Monaco, Janis Boettinger Feb 2019

Soil And Vegetation Survey Of Antelope Pasture, Curlew Grazing Allotment, Oneida County, Id, Merran Owen, Kari E. Veblen, Thomas A. Monaco, Janis Boettinger

Wildland Resources Faculty Publications

Antelope Pasture, located in the Black Pine Valley of Oneida County, Idaho, is a 1500-acre portion of the Curlew Grazing Allotment, managed by the Pocatello Field Office of the BLM (Figure 1). The pasture is heavily invaded with exotic annuals such as cheatgrass (Bromus tectorum), halogeton (Halogeton glomeratus), and clasping pepperweed (Lepidium perfoliatum), and grazing is temporarily discontinued. Land-use history of the pasture includes livestock grazing, possible homesteading and cultivation of Agropyron cristatum (crested wheatgrass).


Community-Level Plant–Soil Feedbacks Explain Landscape Distribution Of Native And Non-Native Plants, Andrew Kulmatiski Jan 2018

Community-Level Plant–Soil Feedbacks Explain Landscape Distribution Of Native And Non-Native Plants, Andrew Kulmatiski

Wildland Resources Faculty Publications

Plant–soil feedbacks (PSFs) have gained attention for their potential role in explaining plant growth and invasion. While promising, most PSF research has measured plant monoculture growth on different soils in short-term, greenhouse experiments. Here, five soil types were conditioned by growing one native species, three non-native species, or a mixed plant community in different plots in a common-garden experiment. After 4 years, plants were removed and one native and one non-native plant community were planted into replicate plots of each soil type. After three additional years, the percentage cover of each of the three target species in each community was …


Shrub Communities, Spatial Patterns, And Shrub-Mediated Tree Mortality Following Reintroduced Fire In Yosemite National Park, California, Usa, James A. Lutz, Tucker J. Furniss, Sara J. Germain, Kendall M. L. Becker, Erika M. Blomdahl, Sean M. A. Jeronimo, C. Alina Cansler, James A. Freund, Mark E. Swanson, Andrew J. Larson Apr 2017

Shrub Communities, Spatial Patterns, And Shrub-Mediated Tree Mortality Following Reintroduced Fire In Yosemite National Park, California, Usa, James A. Lutz, Tucker J. Furniss, Sara J. Germain, Kendall M. L. Becker, Erika M. Blomdahl, Sean M. A. Jeronimo, C. Alina Cansler, James A. Freund, Mark E. Swanson, Andrew J. Larson

Wildland Resources Faculty Publications

Shrubs contribute to the forest fuel load; their distribution is important to tree mortality and regeneration, and vertebrate occupancy. We used a method new to fire ecology—extensive continuous mapping of trees and shrub patches within a single large (25.6 ha) study site—to identify changes in shrub area, biomass, and spatial pattern due to fire reintroduction by a backfire following a century of fire exclusion in lower montane forests of the Sierra Nevada, California, USA. We examined whether trees in close proximity to shrubs prior to fire experienced higher mortality rates than trees in areas without shrubs. We calculated shrub biomass …


Citizen Science Reveals Widespread Negative Effects Of Roads On Amphibian Distributions, Bradley J. Cosentino, David M. Marsh, Kara S. Jones, Joseph J. Apodaca, Christopher Bates, Jessica Beach, Karen H. Beard, Kelsie Becklin, Jane Margaret Bell, Christopher Crockett, George Fawson, Jennifer Fjelsted, Elizabeth A. Forys, Kristen S. Genet, Melanie Grover, Jaimie Holmes, Katherine Indeck, Nancy E. Karraker, Eran S. Kilpatrick, Tom A. Langen, Stephen G. Mugel, Alessandro Molina, James R. Vonesh, Ryan J. Weaver, Anisha Willey Dec 2014

Citizen Science Reveals Widespread Negative Effects Of Roads On Amphibian Distributions, Bradley J. Cosentino, David M. Marsh, Kara S. Jones, Joseph J. Apodaca, Christopher Bates, Jessica Beach, Karen H. Beard, Kelsie Becklin, Jane Margaret Bell, Christopher Crockett, George Fawson, Jennifer Fjelsted, Elizabeth A. Forys, Kristen S. Genet, Melanie Grover, Jaimie Holmes, Katherine Indeck, Nancy E. Karraker, Eran S. Kilpatrick, Tom A. Langen, Stephen G. Mugel, Alessandro Molina, James R. Vonesh, Ryan J. Weaver, Anisha Willey

Wildland Resources Faculty Publications

Landscape structure is important for shaping the abundance and distribution of amphibians, but prior studies of landscape effects have been species or ecosystem-specific. Using a large-scale, citizen science-generated database, we examined the effects of habitat composition, road disturbance, and habitat split (i.e. the isolation of wetland from forest by intervening land use) on the distribution and richness of frogs and toads in the eastern and central United States. Undergraduates from nine biology and environmental science courses collated occupancy data and characterized landscape structure at 1617 sampling locations from the North American Amphibian Monitoring Program. Our analysis revealed that anuran species …


Environmental Assessment: Adobe Town-Salt Wells Creek Herd Management Area Complex Wild Horse Gather, U.S. Bureau Of Land Management Jan 2010

Environmental Assessment: Adobe Town-Salt Wells Creek Herd Management Area Complex Wild Horse Gather, U.S. Bureau Of Land Management

Environmental Assessments (WY)

To analyze the environmental effects of wild horse gather operations and potential population control methods (including fertility control treatment and sex ration adjustment) in order to achieve and maintain the established appropriate management levels for the Adobe Town and Salt Wells Creek Herd Management Areas.


Just Add Water: Reclamation Projects And Development Fantasies In The Upper Basin Of The Colorado River, Stephen C. Strugeon Jan 2008

Just Add Water: Reclamation Projects And Development Fantasies In The Upper Basin Of The Colorado River, Stephen C. Strugeon

Library Faculty & Staff Publications

The history of the development of the American West is full of countless examples of promoters seeking to encourage outside investors to buy land, invest in mines, and build railroads. The history of water projects in the region is no different. Residents of communities such as Grand Junction, Colorado, recognized early on the two-fold dilemma that they faced: irrigation and reclamation projects would be critical to the economic growth of the area, and the funding for these projects would have to be obtained from sources outside the region. The promoters of such projects relied upon booster literature in order to …


Reclamation: Managing Water In The West, A.V. Watkins Dam Safety Of Dams Modification Draft Environmental Assessment Pro-Ea-07-002, W. Russ Findlay, U.S. Department Of The Interior Bureau Of Reclamation Oct 2007

Reclamation: Managing Water In The West, A.V. Watkins Dam Safety Of Dams Modification Draft Environmental Assessment Pro-Ea-07-002, W. Russ Findlay, U.S. Department Of The Interior Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

This document is an environmental assessment (EA) of the proposal to modify A.V. Watkins Dam under the Safety of Dams (SOD) Act of 1978 (Public Law 95-578, as amended). The proposed SOD modifications would correct safety deficiencies of the dam without affecting the purpose or benefits of the dam. Specifically, the embankment and foundation of the dam need to be repaired. The repairs are needed to restore the reservoir to full function and to incorporate state-of-the-art defensive measures of controlling seepage within the foundation and embankment. On November 13, 2006, emergency remedial actions were taken at A.V. Watkins Dam when …


Integrated Restoration Strategies Towards Weed Control On Western Rangelands, U.S. Forest Service Jan 2006

Integrated Restoration Strategies Towards Weed Control On Western Rangelands, U.S. Forest Service

Wildlife Conservation and Management

An attempt to find native plant materials competitive with cheatgrass to help break the cheatgrass-fire cycle and begin the transition from exotic annual-dominated vegetation to native perennial dominated vegetation.


Vernal Fire Management Plan Environmental Assessment, United States Department Of The Interior, Bureau Of Land Management Nov 2005

Vernal Fire Management Plan Environmental Assessment, United States Department Of The Interior, Bureau Of Land Management

All U.S. Government Documents (Utah Regional Depository)

This Environmental Assessment (EA) documents results of an analysis of proposed changes to the current management of wildland fire and hazardous fuels for the Bureau of Land Management (BLM) Vernal Field Office. Proposed revisions of the Vernal Fire Management Plan (FMP) serve as the Proposed Action for this EA. The revised FMP incorporates current planning requirements associated with fire management on public lands, including wildland fire suppression and fuel treatments. The EA analysis is designed to ensure compliance with the National Environmental Policy Act (NEPA). It allows determinations to be made as to whether any significant impacts, as defined by …