Skip to main content
Advanced Search

Filters: Tags: conifer (X)

36 results (63ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
This map depicts the forested regions in the western United States. Data was obtained from the the Sagestitch map and other state-level GAP landcover maps and merged into 90m raster dataset.
thumbnail
This map shows the distribution of ecological systems in the study area. 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 cited as the data source in any products derived from these data.
Speaker: Dr. Keirith Snyder, USDA ARS, Great Basin Rangelands Research Unit, Reno, NV The opportunistic encroachment of native pinyon and juniper trees into areas formerly dominated by sagebrush has reduced the presence of shrubs and grasses, impacting critical habitat and forage availability. Pinyon and juniper currently occupy 19 million hectares in the Intermountain West. Prior to 1860, it is estimated that 2/3 of pinyon and juniper woodlands were sagebrush communities. This presentation will give an overview of the Porter Canyon Experimental Watershed, where tree-felling treatments are being studied. Porter Canyon is located in central Nevada in the Desatoya Mountains. A network of sensors has been installed...
FY2016This project will evaluate the effects of vegetation treatments on population connectivity, genetic diversity and gene flow of wildlife species across the full extent of the Great Basin LCC. The recently approved BLM and Forest Service Land Use Plan Amendments will implement millions of acres of treatments in support of greater sage-grouse conservation. It is essential to evaluate the potential benefits and risks of these treatments on the connectivity and fragmentation of the landscape for multiple non-target species. We will use a dynamic landscape model to simulate fire and treatments, allowing each to vary by type (e.g., juniper removal, prescribed fire), extent, and influence on vegetation and fuels....
thumbnail
This report summarizes activities and data collection outcomes for Cooperative Agreement Award F16AC01182, specifically those research activities conducted as a multi-scale assessment of the effects of juniper removal on songbird, small mammal, and raptor/corvid species. In 2017, we conducted 270 surveys for songbirds, 10 surveys for small mammals, and 77 surveys for avian predators that potentially affect greater sage-grouse. We detected 45 songbird species, 6 mammal species, and 9 species of aerial predators. Data collected by PhD student Aaron Young (aarony@uidaho.edu) will be used as part of a doctoral dissertation. Final products are expected to include a final report, a graduate student dissertation and associated...
This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
thumbnail
Vectorized version of the raster model with the PJ and Conifer interface areas merged across the west. A raster model was developed to identify sagebrush land cover which is in close proximity to conifer land cover, thus suggesting a risk for conifer encroachment. To achieve this end product the following general steps were taken: 1. Extract sagebrush land cover types from GAP/ReGAP data. 2. Extract conifer land cover types (excluding those corresponding to pinyon, juniper, and pinyon-juniper) from GAP/ReGAP data. 3. Reclassify and add these raster datasets. 4. Conduct a focal statistics operation. 5. Multiply the above product by the extracted, reclassified sagebrush raster to identify sagebrush cells adjacent...
FY2016Monitor the diversity and abundance of winged insects (including Lepidoptera, Hymenoptera, Coleoptera, Diptera, and Hemiptera), which include many key insect pollinators, using an array of passive and active trapping methods. Monitor bat diversity and relative densities using passive acoustic monitoring stations (we will use full-spectrum passive recording units). Monitor diversity and abundance of reptiles (lizards and snakes), using trap arrays (pitfall and coverboard) and time-constrained visual encounter surveys. Create empirically supported models of reptile, bat, and insect diversity and abundance as a function of vegetation structure and composition, microclimate, and other environmental variables,...
This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
Land managers are responsible for developing effective strategies for conserving and restoring Great Basin ecosystems in the face of invasive species, conifer expansion, and altered fire regimes. A warming climate is magnifying the effects of these threats and adding urgency to implementation of management practices that will maintain or improve ecosystem functioning. This Factsheet Series was developed to provide land managers with brief summaries of the best available information on contemporary management issues to facilitate science delivery and foster effective management. Each peer-reviewed factsheet was developed as a collaborative effort among knowledgeable scientists and managers. The series begins with...
thumbnail
Background information. The South Canyon project area consists of 121,000 acres within the Upper Sevier River Watershed in southern Utah. This watershed is ranked as a high priority for restoration because of degraded riparian and upland vegetation and erosion, the presence of hazardous fuels placing communities at increased risk of wildfire, and degraded greater sage-grouse (Centrocercus urophasianus) and mule deer (Odocoileus hemionus) habitat because of the expansion and infilling of pinyon and juniper. In particular, this project was designed to reestablish and maintain sagebrush semi-desert habitat, open travel corridors, and provide benefits to sage-grouse and mule deer within and immediately adjacent to the...
thumbnail
Background information. This fuels reduction project, which was conducted by the Bureau of Land Management’s (BLM’s) Rio Puerco Field Office, consisted of woodland habitat restoration in the Zuni Mountains approximately 45 miles south of Grants, New Mexico. Topography of the landscape includes mesas and canyons, with north-facing slopes dominated by stands of ponderosa pine with an open, grassy understory. Like other places in the American West, pinyon and juniper have encroached into open meadows and stands of ponderosa pine, which is most likely because of the lack of a natural fire regime. This change to the wooded landscape has dramatically increased hazardous fuels buildup and the associated risk of wildfire,...
thumbnail
Raster layers depicting the distribution of possible ecological traps to sage-grouse based on the intersection of conifer cover-classes 1 (Greater than 0 up to 10 percent) and 2 (11 up to 20 percent) with high resistance and resilience, and ecological traps within sage-grouse concentration areas and ecological traps in sage-grouse habitat.
thumbnail
Background information.—The Pioche/Caselton Wildland-Urban Interface Project (WUI Project) was conducted by the Bureau of Land Management’s Ely District to reduce the threat of wildfire to the towns of Pioche and Caselton in southeastern Nevada. From 1980 to 2008, 149 wildfires were recorded near Pioche and Caselton and 9 of these fires each burned approximately 3,000 acres. In 2005, the Nevada Community Wildfire Risk/Hazard Assessment for Lincoln County determined that the risk of wildfire for the two towns was “extreme” (Resource Concepts, Inc., 2005). That report recommended implementing large fuels reduction treatments in order to reduce the risk of wildfire to Pioche and Caselton. In response, the Ely District...
Aspen are thought to be declining in this region due to a combination of fire suppression, grazing and wildlife management practices, and potentially cool/wet climates of the past century which favor advancing conifer succession. Many scientists are concerned that aspen?s related species may also be losing habitat, thereby threatening the long-term local and regional viability of this important community. To date, few studies have specifically examined the role of aspen?s epiphytic lichen community. This paper presents basic community research describing the application of Indicator Species Analysis for lichens growing on aspen stems in the central Rocky Mountains of North American. Results show unique lichen assemblages...
This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....


map background search result map search result map Forested Areas in the Western United States Zuni Mountains Forest Restoration Project Color Country South Canyon Restoration Southern NV Public Land Management Act Pioche/Caselton Wildland Urban Interface Project FSA 10:1 NAIP Imagery m_3910530_ne_13_1_20150919_20151102 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3910530_se_13_1_20150919_20151102 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3910530_sw_13_1_20150919_20151102 3.75 x 3.75 minute JPEG2000 from The National Map Measuring the Regional Impacts of Pinyon and Juniper Removal on Insect, Bat, and Reptile Communities Effects of Treatments on the Connectivity and Fragmentation of Wildlife Populations across the Great Basin USGS 1:24000-scale Quadrangle for Conifer, CO 1965 USGS 1:24000-scale Quadrangle for Conifer, CO 1965 USGS 1:24000-scale Quadrangle for Conifer, CO 1965 USGS 1:24000-scale Quadrangle for Conifer, CO 1957 Progress Report: Multi-scale assessment of wildlife response after juniper removal in a sagebrush steppe landscape BLM GRSG BER: Sagebrush, Pinyon-Juniper, and Conifer Interface (polygon) BLM REA SLV 2013 Ecological Systems Possible Ecological Traps to Sage-grouse in the Bistate Region of California and Nevada USGS 1:24000-scale Quadrangle for Conifer, CO 1965 USGS 1:24000-scale Quadrangle for Conifer, CO 1965 USGS 1:24000-scale Quadrangle for Conifer, CO 1965 USGS 1:24000-scale Quadrangle for Conifer, CO 1957 Measuring the Regional Impacts of Pinyon and Juniper Removal on Insect, Bat, and Reptile Communities Progress Report: Multi-scale assessment of wildlife response after juniper removal in a sagebrush steppe landscape Possible Ecological Traps to Sage-grouse in the Bistate Region of California and Nevada Color Country South Canyon Restoration Zuni Mountains Forest Restoration Project Southern NV Public Land Management Act Pioche/Caselton Wildland Urban Interface Project BLM REA SLV 2013 Ecological Systems Effects of Treatments on the Connectivity and Fragmentation of Wildlife Populations across the Great Basin Forested Areas in the Western United States BLM GRSG BER: Sagebrush, Pinyon-Juniper, and Conifer Interface (polygon)