Filters: Tags: Mojave desert (X)
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Solar development has the potential to have widespread impacts on the California desert. Thus, it is important to have as much information as possible regarding the impacts of facilities and related infrastructure on the natural ecosystem and surrounding desert communities, how current policies are influencing development, and how the federal process is working on evaluating solar development applications. This research is detailed in this website. "Renewable Energy in the California Desert: Mechanisms for Evaluating Solar Development on Public Lands" is the result of sixteen months of research conducted by ten graduate students from the University of Michigan School of Natural Resources and Environmen t through...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: BMP,
English,
GIS,
Mojave Desert,
OHV,
Chihuahuan Desert landscapes exemplify the ecological conditions, vulnerability, and management challenges in arid and semi-arid regions around the world. The goal of the Jornada Basin Long Term Ecological Research program (JRN LTER) established in 1982 is to understand and quantify the key factors and processes controlling ecosystem dynamics and patterns in Chihuahuan Desert landscapes. In collaboration with the Jornada Experimental Range (USDA ARS), studies initiated in 1915 have been incorporated into the JRN LTER program. Previous research focused on desertification, a state change from perennial grasslands to woody plant dominance that occurs globally. Based on findings from growing long-term databases, the...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: CMQ3,
Chihuahuan Desert,
DLCC,
Desert LCC,
English,
Biologists, engineers, planners and land managers from nine public agencies have worked together since 2004 to identify large blocks of protected habitat, the potential wildlife movement corridors through and between them, the factors that could possibly disrupt these linkage zones and opportunities for conservation. Recognizing that habitat connectivity is a landscape issue involving multiple land jurisdictions, this workgroup has engaged in unprecedented cooperation and facilitated discussions and partnerships to help ensure a unified approach to wildlife linkage conservation and management. This reinforces the commitment to and efficiency of wildlife connectivity measures undertaken by all stakeholders, using...
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: BMP,
Chihuahuan Desert,
English,
Madrean,
Mojave Desert,
The Desert LCC Conservation Planning Atlas is a platform for data discovery, sharing and collaboration for stakeholders throughout the Desert LCC area. With the CPA you can search for spatial datasets, visualize LCC supported projects, and learn more about conservation science and design in the region.
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
DLCC,
English,
GIS,
Mexico,
The characteristics, discharge, and water quality of springs and seeps, at the Fort Irwin National Training Center (NTC) were evaluated during 2015 and 2016. Geophysical, hydrological, and water-quality data were used to help characterize and document a baseline of current (2016) hydrologic conditions and water quality of springs and seeps located on the NTC. Hydrologic methods used in this study included discrete discharge measurements to evaluate surface flow from the springs, and temperature measurements to trace groundwater movement beneath the springs. This data release contains discharge measurements and temperature data at four springs: Garlic, Bitter, Jack Spring East, and Jack Spring West.
Geotiff raster of habitat suitability for the invasive annual forb Erodium cicutarium (red-stemmed filaree) across the Mojave Desert (NatureServe ecoregional boundary). Raster resolution = 30 m, projection = UTM Zone 11N
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Biological invasions,
Bromus rubens,
Bromus tectorum,
Co-occurrence,
Erodium cicutarium,
The dataset delineates ecological sections within California deserts. These deserts occupy the southeastern portion of California and include two ecoregional provinces comprised of five desert regions ("ecological sections"; Miles and Goudey 1997). The American Semi-Desert and Desert Province (warm deserts) includes the Mojave Desert, Sonoran Desert, and Colorado Desert sections in the southern 83% of the California desert. The Intermountain Semi-Desert Province (cold deserts) includes the Southeastern Great Basin and Mono sections in the northern 17% of the region.
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: California,
Colorado Desert,
Great Basin,
Mojave Desert,
Mono,
North American Warm Desert Dunes and Sand Flats distribution within the DRECP study area.This community was extracted from the Land/Use Natural Vegetation Communities dataset provided by Aerial Information Systems and the California Dept. of Fish and Game. Extractions were based on the GroupCommunity field.The California Department of Fish and Wildlife (CDFW) Vegetation Classification and Mapping Program (VegCAMP) and contractor Aerial Information Systems (AIS) created a fine-scale vegetation map of a portion of the western Mojave Desert in California. The mapped area is bounded to the west and south by USDA Ecoregional Subsection 322Ag of the Mojave Desert (Miles and Goudey 1997). To the east, the portion mapped...
Grids (270m resolution) of selected bioclimatic variables used to forecast plant and animal species distributions for the California Deserts. Climate forecasts are based on the Flexible Global Ocean-Atmosphere-Land System (FGOALS-G2) model â€“ RCP 8.5, for the period 2040-2069. Variables include temperature seasonality (bio4) max temperature of the warmest month (bio5), min temperature of the coldest month (bio6), annual precipitation (bio18), growing degree days (bio20), and aridity index (bio24).
Five principal components are used to represent the climate variation in an original set of 12 composite climate variables reflecting complex precipitation and temperature gradients. The dataset provides coverage for current climate (defined as the 1980-2010 normal period). Climate variables were chosen based on their known influence on local adaptation in plants, and include: mean annual temperature, summer maximum temperature, winter minimum temperature, annual temperature range, temperature seasonality (coefficient of variation in monthly average temperatures), mean annual precipitation, winter precipitation, summer precipitation, proportion of summer precipitation, precipitation seasonality (coefficient of variation...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Arizona,
California,
Colorado,
Colorado Plateau,
Great Basin,
Expansion of renewable energy development is rapidly transforming the Mojave Desert landscape and has the potential to impact Golden Eagles through loss of foraging habitat and reduced prey base. Regional information on Golden Eagle food habits is limited and little is known of how dietary variability influences eagle productivity. We examined diet using motion activated trail cameras and collection of prey remains at 18 nests during two seasons (2014 and 2015). As well as Golden Eagle prey abundance spotlight line transects conducted and data collected throughout the Mojave Desert Ecoregion in 2014 and 2015. The 138 spotlight line transects conducted in 2014 were a uniform 5 km in length, while the 45 spotlight...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Biogeography,
Birds of prey,
California,
Diets,
Mojave Desert,
The California desert occupies the southeastern 27% of California (11,028,300 ha, 110,283 km2 or 27,251,610 ac). It includes two ecoregional provinces comprised of five desert regions (“ecological sections”; Miles and Goudy 1997). The American Semi-Desert and Desert Province (warm deserts) includes the Mojave Desert, Sonoran Desert, and Colorado Desert sections in the southern 83% of the California desert. The Intermountain Semi-Desert Province (cold deserts) includes the Southeastern Great Basin and Mono sections in the northern 17% of the region. Previous analyses of fire patterns across the California desert have used point occurrence data. Point occurrence data can have limitations because they can: (1) represent...
(Abstract from MDPI): Traditional conservation practices have primarily relied on maintaining biodiversity by preserving species and habitats in place. Many regions are experiencing unprecedented environmental conditions, shifts in species distribution and habitats, and high turnover in species composition, resulting in ecological transformation. Natural resource managers have lacked tools for identifying and selecting strategies to manage ecosystem transformation. A recently formalized decision support framework provides a way for managers to resist, accept, or direct (RAD) the trajectory of change. We begin by identifying how historical conservation practices are built into the RAD framework. Next, we describe...
Categories: Publication;
Types: Citation;
Tags: Mojave Desert,
RAD,
biodiversity,
conservation,
conservation portfolios,
Empirical evidence that local adaptation and home-site advantages are frequent across plant taxa has increased recognition that local adaptation plays a fundamental role in shaping plant responses to seed transfer (i.e., when plant materials are introduced to a site during restoration). Use of maladapted plant materials can lead to poor project outcomes if propagules exhibit poor germination or seedling survival, low population fitness, inbreeding or outbreeding depression. Accounting for local adaptation in restoration designs is a promising approach for increasing revegetation effectiveness, particularly in drylands where extreme environmental variation potentially drives high levels of selection. Consequently,...
The Younger Dryas (YD) climate event is the preeminent example of abrupt climate change in the recent geologic past. Climate conditions during the YD were spatially complex, and high-resolution sediment cores in the North Atlantic, western Europe, and East Asia have revealed it unfolded in two distinct stages, including an initial stable climatic period between ~12.9 and 12.2 ka associated with a weakened Atlantic Meridional Overturning Circulation (AMOC) and a second phase characterized by variable conditions until 11.7 ka as the AMOC recovered. Decades of investigations into the climate of western North America during the YD have failed to identify this stepped phenomenon. Here we present hydroclimate data from...
TNC developed a digital version for the whole of David E. Brown and Charles H. Lowe’s 1981 map. Previously, GIS representations of this map were only available for its Arizona and New Mexico portions. Users: please note the relatively coarse source scale of the paper map (1:1,000,000) when using this digital version for analyses. A layer file (.lyr) which mimics the familiar color scheme of the paper map is also available.
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Chihuahuan Desert,
English,
GIS,
Madrean,
Mexico,
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. The Mojave River and Morongo ground-water basins are in the southwestern part of the Mojave Desert in southern California. Ground water from these basins supplies a major part of the water requirements for the region. The continuous population growth in this area has resulted in ever-increasing demands on local ground-water resources. The collection and interpretation of ground-water data helps local water districts, military bases,...
The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 mi north-northeast of Barstow, California, covers approximately 1,177 square miles, and is comprised of ten groundwater basins, three of which have been subdivided into subbasins on the basis of additional hydrologic testing. Since the early 1990s, the U.S. Geological Survey (USGS) has been studying water resources issues at Fort Irwin. One issue of concern is the potential effect of groundwater development resulting from planned training expansion and infrastructure at the NTC on natural springs and seeps, an important water source for wildlife. In 2010, the USGS entered into cooperative agreements with the U.S. Army to complete studies of...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bicycle Lake,
CAWSC,
California,
California Water Science Center,
Electrical Resistivity Tomography,
Five principal components are used to represent the climate variation in an original set of 12 climate variables reflecting precipitation and temperature gradients. The dataset provides coverage for four regions (the Sonoran Desert, Mojave Desert, Colorado Plateau, and Southern Great Basin) and three time periods including current climate (defined as the 1980-2010 normal period) and future climate (2010-2040 and 2040-2070 normal periods) under the RCP4.5 and RCP8.5 emission scenarios. Climate variables were chosen based on their known influence on local adaptation in plants, and include: mean annual temperature, summer maximum temperature, winter minimum temperature, annual temperature range, temperature seasonality...
Categories: Data Release - Revised;
Tags: Arizona,
California,
Colorado,
Colorado Plateau,
Great Basin,
The Central Mojave Vegetation Polygons shapefile represents areas of the Mojave Desert classified into vegetation classes or alliances representative of the area from 1997-1999. The classification of these areas were derived from context gathered in the field data, photographs and additional satellite imagery that is not included in this data release. The original map coverage was preserved and released as a shapefile (mojave_veg_polygons.shp). In contrast to the Special Features Points vegetation classifications (described in the Special Features Points shapefile metadata record and ScienceBase item), the Central Mojave Vegetation Polygons were designated by vegetation alliances that extended 5 hectares or more....
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: California,
California plants,
California vegetation,
China Lake Naval Weapons Center,
Death Valley National Park,
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