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This data set is digital grazing allotments for the Casper Field Office. The information was prepared by digitizing the grazing allotment boundaries for the 4 counties-Natrona, Converse, Platte and Goshen. The pasture boundaries were digitized for the area within Natrona county. The data in Natrona county was digitized by the Wyoming State Office using data from mylars prepared by the field office and using 7.5 minute USGS Quadrangle maps as a base. The other 3 counties were digitized on screen using the USGS Quandrangle maps and the ownership maps as a backdrop. The data was completed by county and then merged into one coverage.
Categories: Data;
Types: Downloadable;
Tags: BLM,
Casper Field Office,
Federal Government,
allotment, range,
farming,
Many soils in southeastern Utah are protected from surface disturbance by biological soil crusts that stabilize soils and reduce erosion by wind and water. When these crusts are disturbed by land use, soils become susceptible to erosion. In this study, we compare a never-grazed grassland in Canyonlands National Park with two historically grazed sites with similar geologic, geomorphic, and geochemical characteristics that were grazed from the late 1800s until 1974. We show that, despite almost 30 years without livestock grazing, surface soils in the historically grazed sites have 38-43% less silt, as well as 14-51% less total elemental soil Mg, Na, P, and Mn content relative to soils never exposed to livestock disturbances....
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Ecological Applications,
Utah,
arid,
desert,
erosion,
The stoichiometric light: nutrient hypothesis (LNH) links the relative supplies of key resources with the nutrient content of tissues of producers. This resource-driven variation in producer stoichiometry, in turn, can mediate the efficiency of grazing. Typically, discussions of the LNH attribute this resource—stoichiometry link to bottom-up effects of light and phosphorus, which are mediated through producer physiology. Emphasis on bottom-up effects implies that grazers must consume food of quality solely determined by resource supply to ecosystems (i.e., they eat what they are served). Here, we expand upon this largely bottom-up interpretation with evidence from pond surveys, a mesocosm experiment, and a model....
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Ecological Society of America,
Ecology,
algal species composition,
ecological stoichiometry,
grazing,
Summer and fall grazing trials were conducted to study the effect of monoterpenoid concentrations on the diet selection of sheep grazing big sagebrush (Artemisia tridentata ssp. tridentata ) range. Total monoterpenoid concentrations were significantly lower in browsed sagebrush plants than in rejected plants. Sheep selected older plants and plant parts, not current season's growth. As annual grasses in the community declined, sheep consumed more sagebrush, resulting in an increase in dietary crude protein but a decline in in vitro organic matter digestibility. This study indicates that monoterpenoid levels, not nutritional constituents, may influence sheep diet selection of sagebrush.
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: efensive mechanisms,
grazing,
herbivory
Populations of grasses exposed to grazing by vertebrates often exhibit reduced stature, increased tillering, reduced flowering, and other morphological differences which distinguish them from ungrazed populations. These differences frequently are interpreted as an adaptive response that reduces grazing damage; however, there are few experimental tests of this hypothesis. This paper describes a field experiment designed to determine whether morphological variation among genotypes of the grass Bouteloua gracilis is related to variation in their responses to grazing. Eleven genotypes differing in morphological and reproductive characters were transplanted into a shortgrass steppe community near Fort Collins, Colorado....
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Bouteloua gracilis,
Grazing,
Morphology,
Oecologia,
Resistance,
This coverage represents the range pasture boundaries of the Fishlake National Forest. Source data used were quad-based paper range allotment and analysis maps.
This is Arizona Bureau of Land Management (BLM) statewide grazing allotment data. This polygon feature class depicts the boundaries of the livestock grazing allotments located within the Arizona BLM, Arizona, USA. Each allotment has one or more pastures. In some cases, this layer identifies the BLM managed public land or other land associated with specific grazing allotments administered by the local BLM field office. Boundaries may be fences, arbitrary lines, or natural barriers. Agency management of polygons within this feature class is not specific to BLM; other agencies are also included.
These data were compiled for an assessment of rangeland ecosystem conditions of the Grand Canyon - Parashant National Monument. The approximately one-million-acre Grand Canyon-Parashant National Monument (PARA) is located in the northwest corner of Arizona and co-managed by the Bureau of Land Management (BLM) and National Park Service (NPS). This report is focused on the ca. 200,000 acres of NPS administered lands—one of the largest NPS units where livestock grazing is a permitted land-use activity. Many ecosystems in PARA are characterized by a low degree of resilience to improper grazing due to low and variable precipitation. PARA is marked by an extremely high degree of environmental heterogeneity, including...
This is the official national dataset of BLM's Taylor Grazing Act (TGA) grazing district boundaries which portrays the grazing districts established or subsequently modified under the Taylor Grazing Act. BLM TGA grazing district boundaries are separate and distinct from BLM administrative districts, which were not established until BLM was formed (under Reorganization plan #3 of 1946) by combining the General Land Office and the Grazing Service. The Taylor Grazing Act of 1934 authorized the Secretary of the Interior to provide for the orderly use of livestock grazing on the public domain lands that “in his opinion are chiefly valuable for grazing and raising forage crops”. Under Section 3 of the Act, grazing permits...
This data set contains output from the dynamic vegetation model MC1, as modified to simulate future woody encroachment in the northern Great Plains. Simulations were done for the historical period (1895-2005) and the future period (2006-2100). Separate simulations were done for eastern and western portions of the region, with the eastern simulations using model parameters appropriate for Juniperus virginiana as the major evergreen needle-leaf life form, and the western simulations using model parameters appropriate for Pinus ponderosa as the major evergreen needle-leaf life form. Simulations in each portion were run for two A2 emissions scenario climate projections (CSIRO, representing moderate temperature increases...
Categories: Data;
Types: Citation;
Tags: Grasslands and Plains,
Juniperus,
Landscapes,
North Central CASC,
Pinus ponderosa,
Reindeer grazing allotment polygons, with owner name, and grazing range monitoring data for reindeer on the Seward Peninsula from 2000 to 2010. These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. The BLM should be...
These data (all data tables for the data release) represent a suite of biotic and abiotic variables that characterized plant communities and the geologic, geomorphic, edaphic, climatic, and land use history context in which distinct plant communities occur. In 2009, the National Park Service's Inventory and Monitoring program for the Northern Colorado Plateau Network (NCPN) began measuring vegetation cover and site characteristics at monitoring plots stratified across different vegetation types within national parks on the Colorado Plateau. NCPN biologists remeasured vegetation cover at these plots in a rotating panel over the following decade. In 2019, U. S. Geological Survey geologists and soil scientists collected/compiled...
Resumen ejecutivo El objetivo del presente Plan Maestro de la Alianza Regional para la Conservación de Pastizales del Desierto Chihuahuense es brindar un marco de cooperación para la acción regional para los estados que integran el Desierto Chihuahuense. Como concepto rector de este documento se ha tomado el del desarrollo sustentable, es decir, se invita a explorar y abordar las vertientes sociales y económicas de toda actividad que tenga que ver con el manejo y uso de los pastizales como ecosistema natural y viceversa. Este documento está dividido en dos partes fundamentales. La primera ofrece una perspectiva continental y nacional sobre el Desierto Chihuahuense, su importancia ambiental, económica y social;...
Categories: Publication;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
Mexico,
Spanish,
grassland,
grazing,
RESUMEN En México y EUA, los pastizales del Desierto Chihuahuense han experimentado un gran deterioro desde mediados de 1800's. Ello se ha debido principalmente deficientes prácticas ganaderas, al cambio climático, la supresión del fuego, a la fragmentación de hábitat y cambio de uso de suelo. En conjunto, se ha provocado un incremento en los escurrimientos y la erosión, una disminución de la diversidad biológica y pérdida en las concentraciones de aves, incremento en la invasión de especies no nativas y una disminución en la cantidad de forraje para animales domésticos y silvestres. La Estrategia para la Conservación de los Pastizales de Desierto Chihuahuense (ECOPAD) ofrece un esquema de cooperación para enfrentar...
Categories: Publication;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
Mexico,
Spanish,
agriculture,
grassland,
El acervo de información geográfica se compone de nueve accesos en la sección Temas: Cartografía urbana, Catastro, Datos de relieve, Geodesia, Imágenes del territorio, Marco geoestadístico nacional, Nombres geográficos, Recursos naturales y Topografía. Lo mismo que en el ámbito estadístico, en el geográfico los recursos normativos y metodológicos son de gran importancia, ya que nos permiten conocer mejor los datos, además de propiciar condiciones que promueven la comparabilidad de la información con la adopción de principios homogéneos: en Aspectos normativos es posible consultar las clasificaciones y los catálogos, los metadatos geográficos, así como las normas técnicas empleadas en la generación de datos geográficos....
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
GIS,
Mexico,
Sonoran Desert,
Spanish,
The Arizona Game and Fish Department (Department) recently revised its State Wildlife Action Plan that provides a framework and information to assist in setting conservation priorities for the state’s wildlife and habitats. Data gathered for Arizona’s State Wildlife Action Plan represents myriad sources and extensive public comment, and is used to support the Department’s efforts to develop proactive conservation goals and objectives. Much of that data (more than 300 data layers) is compiled into a single model of wildlife conservation potential, the Species and Habitat Conservation Guide. To ensure the State Wildlife Action Plan information is accessible and useful to everyone, the Arizona Game and Fish Department...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
English,
GIS,
Mojave Desert,
OHV,
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: GIS,
New Mexico,
Texas,
burro,
grazing,
The REA estimates the condition of 14.2 million acres of land in southern New Mexico. It is based on states described in “ecological site descriptions” (ESDs) and expert knowledge. ESDs have been developed by the Natural Resource Conservation Service, and they are a consistent, science and expert-based resource increasingly used by land managers. It focuses on public rangelands - grasslands, shrublands, and savannas - managed by the Bureau of Land Management, and includes some other lands as well. The REA compares current condition to the expected or “reference” condition, and summarizes the vegetation, ecological processes and restorative management options of these states. Depending on these management options...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
English,
GIS,
US,
climate,
This presentation aired as part of the Great Basin LCC webinar series on September 13, 2017. Speakers include Courtney Conway, Idaho Cooperative Fish and Wildlife Research Unit, and Paul Makela, Bureau of Land Management.Description: Greater Sage-grouse have declined since the mid-1960s, and grazing is the most extensive land use within sage-grouse habitat. The speakers will present progress on a 10-year project designed to document the effects of cattle grazing on: 1) demographic traits of Greater Sage-grouse; 2) sage-grouse habitat characteristics, 3) insect abundance, which is important prey for sage-grouse chicks, and 4) abundance of all other bird species. The research team works at five study sites in Idaho...
Cheatgrass (Bromus tectorum L.) is an invasive annual grass that creates near-homogenous stands in areas throughout the Intermountain sagebrush steppe and challenges successful native plant restoration in these areas. A clipping experiment carried out at two cheatgrass-dominated sites in eastern Oregon (Lincoln Bench and Succor Creek) evaluated defoliation as a potential control method for cheatgrass and a seeding preparation method for native plant reseeding projects. Treatments involved clipping plants at two heights (tall=7.6 cm, and short=2.5 cm), two phenological stages (boot and purple), and two frequencies (once and twice), although purple-stage treatments were clipped only once. Treatments at each site were...
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Rangeland Ecology & Management,
cheatgrass,
clipping,
grazing,
livestock,
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