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Principal components of climate variation in the Desert Southwest for the future time period 2040-2070 (RCP 4.5) 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 future climate (defined as the 2040-2070 normal period) under the RCP4.5 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 (coefficient of variation in monthly average temperatures), mean annual precipitation, winter precipitation, summer precipitation, proportion of summer precipitation, precipitation... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Arizona, California, Colorado, Colorado Plateau, Great Basin, All tags... Mojave Desert, Nevada, New Mexico, Sonoran Desert, United States, Utah, atmospheric and climatic processes, climatologyMeteorologyAtmosphere, geospatial analysis, precipitation, Fewer tags Principal components of climate variation in the Desert Southwest for the future time period 2040-2070 (RCP 8.5) 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 future climate (defined as the 2040-2070 normal period) under the 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 (coefficient of variation in monthly average temperatures), mean annual precipitation, winter precipitation, summer precipitation, proportion of summer precipitation, precipitation... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Arizona, California, Colorado, Colorado Plateau, Great Basin, All tags... Mojave Desert, Nevada, New Mexico, Sonoran Desert, United States, Utah, atmospheric and climatic processes, climatologyMeteorologyAtmosphere, geospatial analysis, precipitation, Fewer tags Evidence of Mammalian Carnivores at the Desert Tortoise Research Natural Area, Western Mojave Desert, USA, between 1989 and 2012. During a multi-year demographic study of Agassiz’s desert tortoise (Gopherus agassizii) at the Desert Tortoise Research Natural Area (Natural Area), in the western Mojave Desert, USA, we recorded evidence of evidence of mesocarnivores that commonly prey on desert tortoises on a 7.77 square-kilometer study area. The study area included land inside and outside the fenced boundary of the Natural Area. We recorded locations, condition and recency of sign, and type of sign present at burrows, dens, and den complexes used by desert kit foxes (Vulpes macrotis), coyotes (Canis latrans), American badgers (Taxidea taxus), and bobcats (Lynx rufus). We also recorded scat piles by species using them, amount, and relative ages... Categories: Data; Tags: California, Desert Tortoise Research Natural Area, Mojave Desert, USGS-EMA-LOW-PL Mojave Desert/SW Desert, biota, All tags... carnivores, Fewer tags RestoreNet subplot data for 21 sites within major dryland ecoregions throughout the southwestern United States, 2018 - 2021 These data were compiled for a networked field-trial restoration experiment (RestoreNet) that spans the southwestern US, including 21 distributed field sites. The objective of our study was to understand the environmental factors and restoration practices (including seed mixes and soil manipulation) that increase plant establishment and survival to ultimate improve restoration outcomes in dryland environments. These data represent point-in-time plant density and height measurements at our field sites at the time of monitoring. These data were collected at 21 arid and semi-arid sites, located throughout Arizona, Utah, New Mexico, and California. These data were collected by USGS Restoration Assessment and Monitoring... Categories: Data; Tags: Arizona, Botany, California, Chihuahuan Desert, Climatology, All tags... Colorado, Colorado Plateau, Ecology, Geography, Information Sciences, Mojave Desert, New Mexico, Soil Sciences, Sonoran Desert, USGS Science Data Catalog (SDC), Utah, arid, atmospheric and climatic processes, biogeography, biota, climate change, climatologyMeteorologyAtmosphere, data release, drylands, ecological modeling, ecological processes, ecological restoration, ecosystem monitoring, environment, environmental conditions, environmental variables, field inventory and monitoring, field sites, geoscientificInformation, grassland ecosystems, growth responses, monitoring, plant density, plant establishment, plant growth, plant height, plant responses, plant survival, plants (organisms), post-restoration, precipitation (atmospheric), remediation, restoration experiment, restoration seeding, restoration treatments, restoration variables, seed mixes, seedling emergence, seedling survival, semi-arid, site characteristics, soil resources, soil texture, southwestern US, spatial environmental variation, temporal change, temporal environmental variation, weedy species, zero-inflated data, Fewer tags Natural Resource Condition Assessments What are current conditions for important park natural resources? What are the critical data and knowledge gaps? What are some of the factors that are influencing park resource conditions? Natural Resource Condition Assessments (NRCAs) evaluate and report on the above for a subset of important natural resources in national park units (hereafter, parks). Focal study resources and indicators are selected on a park-by-park basis, guided by use of structured resource assessment and reporting frameworks. Considerations include park resource setting and enabling legislation (what are this park's most important natural resources?) and presently available data and expertise (what can be evaluated at this time?). In addition... Categories: Data; Types: ArcGIS REST Map Service, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, GIS, Madrean, Mojave Desert, All tags... Sonoran Desert, US, agriculture, amphibian, assessment, biodiversity, bird, climate, connectivity, contamination, development, ecoregion, endangered, energy, erosion, fire, grassland, grazing, groundwater, invasive, inventory, invertebrate, land cover, mammal, management, map, mining, model, monitoring, oil, plant, priority, protected area, rare, recreation, renewable, reptile, research, riparian, river, road, scrub, shrub, soil, spring, stream, threat, threatened, topography, vegetation, vulnerability, water, watershed, wetland, wildlife, Fewer tags Horizontal-to-Vertical Seismic Ratio Passive-Seismic Data Collected at Edwards Air Force Research Laboratory, Antelope Valley, California, 2018 Passive seismic data collection was done northwest of the Air Force Research Laboratory (AFRL) at Edwards Air Force Base using the horizontal-to-vertical spectral ratio (HVSR) technique. HVSR surveys were done at 43 locations between May and September 2018 to refine the understanding of the bedrock-alluvial aquifer transition zone downgradient from the AFRL. Specifically, the data were collected to help determine the depth to bedrock. The HVSR method is a passive seismic technique that uses a three-component seismometer to measure the vertical and horizontal components of ambient seismic noise. Seismic noise in the range of ~0.1 to 1 Hertz (Hz) is caused by ocean waves, large regional storms, and tectonic sources.... Categories: Data; Tags: Antelope-Fremont Valleys, Boron, California, Edwards Air Force Base, Kern County, All tags... Leuhman Ridge, Mojave Desert, North Edwards, electrical resistivity imaging, environment, geophysics, geophysics, geoscientificInformation, measurement, seismic methods, Fewer tags Invertebrate Data In this observational pilot study, we worked at the largest existing solar tower facility in the world (Ivanpah Solar Electric Generating System - ISEGS) to assess the efficacy of using radar, surveillance video, and insect trapping to monitor animals flying near the towers. During week-long site visits in May and September, we monitored the airspace surrounding towers and observed insects, occasional birds, and bats under a variety of environmental and operational conditions. This dataset enumerates invertebrates captured using both malaise and funnel traps placed on the ground in the immediate vicinity of solar towers in the locations shown in Figure 2 of the associated paper. The locational information below... Categories: Data; Types: Citation; Tags: Ivanpah Solar Electric Generating System, Ivanpah Valley, Mojave Desert, Monitoring and Evaluation, Solar Energy, All tags... Solar power towers, Wildlife and Fisheries, animal movement, bats, birds, infrared, insects, migration, power generation sites, solar flux, solar power, video monitoring, videography, videos, wildlife, Fewer tags Electrical Resistivity Tomography Data at Edwards Air Force Research Laboratory, Antelope Valley, California, 2018 Electrical resistivity tomography (ERT) surveys were done northwest of the Air Force Research Laboratory (AFRL) at Edwards Air Force Base. ERT surveys were done at four locations in May through June of 2018 to refine the understanding of the bedrock-alluvial aquifer transition zone downgradient from the AFRL. The ERT technique injects direct-current electricity with known voltage and current into the earth using a series of electrodes and measures the resulting resistivity. This technique is generally limited to investigations of aquifer properties less than 100 meters below land surface. Data from other geophysical techniques co-located with the ERT data, including time-domain electromagnetics and horizontal-to-vertical... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Antelope-Fremont Valleys, Boron, California, California Water Science Center, Edwards Air Force Base, All tags... Electrical Resistivity Tomography, Leuhman Ridge, Mojave Desert, North Edwards, bedrock geologic units, environment, geophysics, geoscientificInformation, groundwater, hydrologic processes, water resources, Fewer tags Ground-Based Time-Domain Electromagnetic Data Collected at Edwards Air Force Research Laboratory, Antelope Valley, California, 2018 Time-domain electromagnetic (TEM) surveys were done northwest of the Air Force Research Laboratory (AFRL) at Edwards Air Force Base. TEM surveys were done at 33 locations between May and October 2018 to refine the understanding of the bedrock-alluvial aquifer transition zone downgradient from the AFRL. TEM surveys (also called transient electromagnetic surveys) provide 1D resistivity soundings of the subsurface, which can be related to lithology and hydrogeology. In the TEM method, electrical current is cycled through a transmitter loop (Tx) wire, which in turn produces a primary magnetic field. When the current is abruptly terminated, a secondary magnetic field is induced in the earth, and it moves downward and... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Antelope-Fremont Valleys, Boron, California, Edwards Air Force Base, Kern County, All tags... Leuhman Ridge, Mojave Desert, North Edwards, electrical resistivity tomography, environment, geophysics, geophysics, geoscientificInformation, measurement, time domain electromagnetic, transient electromagnetic, Fewer tags Observations of Potential Avian Predators of Agassiz’s Desert Tortoise (Gopherus agassizii) at the Desert Tortoise Research Natural Area, eastern Kern County, California, in Late Winter and Spring of 1989, 1993, 1997, 2002, and 2012 During the five-survey years at the Desert Tortoise Research Natural Area in the western Mojave Desert of California, 1,645 sightings of 13 species of avian predators were collected. Eleven species occurred both inside and outside the fenced Desert Tortoise Research Natural Area, and two species, the short-eared owl and great horned owl, occurred only inside the fence. The most abundant predator was the common raven with more observations outside the fence than inside the fence in most years. Ravens are hyper-predators of the desert tortoise and, at the Desert Tortoise Research Natural Area, are one of four drivers of population decline. This species also inhibits recovery because of the high numbers (Berry et al.... Categories: Data; Tags: Mojave Desert, USGS-EMA-LOW-PL Mojave Desert/SW Desert, USGS-EMA-LOW-SB SMC: Avian, biota, field inventory and monitoring Random forest classification data developed from multitemporal Landsat 8 spectral data and phenology metrics for a subregion in Sonoran and Mojave Deserts, April 2013 – December 2020 These data were compiled for the creation of a continuous, transboundary land cover map of Bird Conservation Region 33, Sonoran and Mojave Deserts (BCR 33). Objective(s) of our study were to, 1) develop a machine learning (ML) algorithm trained to classify vegetation land cover using remote sensing spectral data and phenology metrics from 2013-2020, over a large subregion of the Sonoran and Mojave Deserts BCR, 2) Calibrate, validate, and refine the final ML-derived vegetation map using a collection of openly sourced remote sensing and ground-based ancillary data, images, and limited fieldwork, and 3) Harmonize a new transboundary classification system by expanding existing land cover mapping resources from the United... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Arizona, Baja California, Botany, California, Ecology, All tags... Forestry, Geography, Hermosillo, Information Sciences, Landsat images, Mexico, Mojave Desert, Phoenix, Remote Sensing, Sonora, Sonoran Desert, Southwest, US-Mexico Transboundary region, USGS Science Data Catalog (SDC), United States, artificial intelligence, biogeography, biota, classification, conservation, data release, desert ecosystems, ecosystem management, imageryBaseMapsEarthCover, land use and land cover, machine learning, modeling, natural resource management, phenology, phenology metrics, random forest model, remote sensing, remote sensing spectral data, time series datasets, transboundary, vegetation, Fewer tags Reported water levels for selected wells in the Mojave River and Morongo Groundwater Basins, Spring 2016 This data release represents a selection of tabular data used in the 2016 Mojave River and Morongo groundwater basin regional water table map. The data represent water level measurements provided by cooperating water agencies whose data collection standards may not meet the criteria set forth by the U.S. Geological Survey for entry and storage in the National Water Information System (NWIS). Categories: Data; Tags: Mojave Desert, Mojave River Basin, Morongo Basin, San Bernardino County, Southern California, All tags... groundwater, hydrology, water level, water resources, water table, Fewer tags Pesticide constituent data from the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP), August 2013 - May 2018, schedule 2437 constituents This Data release presents results for pesticide constituents in 460 samples collected from domestic and public-supply wells in August 2013-May 2018 for the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP). The samples were analyzed for 225 pesticide constituents on USGS National Water Quality Laboratory analytical schedule 2437. Results from quality-control samples collected with the environmental samples and results from laboratory quality-control samples were used to re-process the data to meet project data-quality objectives. The data release includes the final approved results tabulated by result and by sample, the original and final values for results affected... Categories: Data; Tags: California, Environmental Health, GAMA Priority Basin Project, Geochemistry, Hydrology, All tags... Mojave Desert, Sacramento Valley, San Joaquin Valley, Sierra Nevada Foothills, USGS Science Data Catalog (SDC), Water Quality, Water Resources, domestic well water use, environment, geoscientificInformation, groundwater quality, pesticide and herbicide contamination, Fewer tags Select borehole data for Edwards Air Force Base and vicinity, Antelope Valley, CA Edwards Air Force Base (EAFB) is located in Kern County, CA, approximately 35 kilometers (km) northeast of Lancaster and 9 km south of California City. The Air Force Research Laboratory (AFRL) is situated on EAFB, approximately 7 km southwest of Boron, CA. Release of contaminants from the AFRL facilities have contaminated local groundwater, which is mostly restricted to fractured granitic bedrock, but studies indicate that the groundwater and contaminant plumes have moved into alluvial deposits to the north and northwest (AECOM, 2014). The U.S. Geological Survey (USGS) and the Air Force Civil Engineer Center (AFCEC) entered into a cooperative agreement in 2017 to develop a hydrogeologic framework model to help determine... Categories: Data; Tags: Antelope Valley, Edwards Air Force Base, Hydrology, Mojave Desert, Stratigraphy, All tags... USGS Science Data Catalog (SDC), Water Resources, bedrock geologic units, borehole logging, rocks and deposits, Fewer tags Invasive Plant Cover in the Mojave Desert, 2009 - 2013 (ver. 2.0, April 2021) We assessed the impacts of co-occurring invasive plant species on fire regimes and postfire native communities in the Mojave Desert, western USA by analyzing the distribution and co-occurrence patterns of three invasive annual grasses known to alter fuel conditions and community structure: Red Brome (Bromus rubens), Cheatgrass (Bromus tectorum), and Mediterranean grass (Schismus spp.: Schismus arabicus and Schismus barbatus), and an invasive forb, red stemmed filaree (Erodium cicutarium) which can dominate postfire sites. We developed species distribution models (SDMs) for each of the four taxa and analyzed field plot data to assess the relationship between invasives and fire frequency, years postfire, and the impacts... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Mojave desert, USGS Science Data Catalog (SDC), biota, co-occurance invasives, desert ecosystems, All tags... ecosystems, field methods, fire disturbance, fire frequency, fires, geographic information systems, habitat alteration, invasive species, plants (organisms), remote sensing, vegetation, Fewer tags Data release for Seasonality of precipitation in the southwestern United States during the late Pleistocene inferred from stable isotopes in herbivore tooth enamel The late Pleistocene was a climatically dynamic period, with abrupt shifts between cool-wet and warm-dry conditions. Increased effective precipitation supported large pluvial lakes and long-lived spring ecosystems in valleys and basins throughout the western and southwestern U.S., but the source and seasonality of the precipitation are debated. Here we present stable carbon and oxygen isotope data from tooth enamel of late Pleistocene herbivores recovered from paleowetland deposits at Tule Spring Fossil Beds National Monument in the Las Vegas Valley of southern Nevada, as well as modern herbivores from the surrounding area, to investigate whether winter or summer precipitation was responsible for driving the wet... Categories: Data; Tags: Las Vegas, Nevada, Mojave Desert, Tule Springs Fossil Beds National Monument, USGS Science Data Catalog (SDC), late Pleistocene, All tags... none, paleoclimate, paleowetlands, southwestern U.S., stable isotopes, tooth enamel, Fewer tags Impact of Ecosystem Water Balance on Desert Vegetation: Quantification of Historical Patterns and Projection under Climate Change Explore climate change impacts on vegetation across the Desert and Southern Rockies LCCs using historical monitoring data collected from 23 sites across the Sonoran, Chihuahuan, Mojave and Colorado Plateau deserts for 30-50 years. This data will then be combined with ecosystem water balance model simulations to establish features of water availability critical for plant species response. Results will allow managers to identify species and communities at risk under future climate scenarios based on predicted changes in plant water availability. Due to the high variability in soils, incorporating a detailed understanding of soil water availability beyond bioclimatic envelope approaches in the desert Southwest is essential... Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, AZ-02, AZ-03, AZ-04, Academics & scientific researchers, All tags... Applications and Tools, Arizona, Big Bend ‐ Río Bravo & Lower Río Conchos Pilot Area, CA-08, CO-03, California, Chihuahua, Chihuahuan Desert, Colorado Plateau, Conservation NGOs, Datasets/Database, Decision Support, Desert Landscape Conservation Cooperative, EARTH SCIENCE > BIOSPHERE > VEGETATION, Federal resource managers, LCC, LCC Network Science Catalog, Mexico, Mojave Desert, Mojave Desert Pilot Area, NM-02, NV-03, NV-04, New Mexico, Population & Habitat Evaluation/Projection, Project, Sonora, Sonoran Desert, TX-16, TX-23, Transboundary Madrean Watersheds Pilot Area, UT-02, UT-03, United States, User Manual, Utah, Vulnerability Assessment, biota, climate change, completed, desert southwest, ecohydrology, plants, soil water, vegetation change, water availability, Fewer tags Selected Evapotranspiration Data, Amargosa Desert Research Site, Nye County, Nevada, 7/5/2011-1/1/2017 Selected evapotranspiration data were collected from 7/5/2011 to 1/1/2017 at the Amargosa Desert Research Site (ADRS, https://nevada.usgs.gov/adrs/) in support of ongoing research to improve the understanding of hydrologic and contaminant-transport processes in arid environments. The data presented in this data release includes 30-minute and daily evapotranspiration and associated energy-balance fluxes, precipitation, soil water content, air and soil temperature, wind speed and direction, humidity, and photosynthetically active radiation. Data methods follow those described in Moreo and others (2017). This is the third in a series of three releases of evapotranspiration data, which has been measured continuously... Categories: Data; Tags: Amargosa Desert, Amargosa Desert Research Site, Climatology, Ecology, Energy budget, All tags... Environmental Health, Evapotranspiration, Hydrogeology, Mojave Desert, Net radiation, Nevada, Nye County, Precipitation, Soil Sciences, USGS Science Data Catalog (SDC), Water Resources, Fewer tags Micrometeorological and Soil-Moisture Data at the Amargosa Desert Research Site in Nye County near Beatty, Nevada, January 1, 2017 to May 31, 2019 This data release describes micrometeorological and soil-moisture data collected from January 1, 2017 through May 31, 2019 at the Amargosa Desert Research Site adjacent to a low-level radio­active waste and hazardous chemical waste facility near Beatty, Nevada. Micrometeorological data include precipitation, solar radiation, air temperature, relative humidity, saturated and ambient vapor pressure, wind speed and direction, barometric pressure, and soil-water content. Soil-moisture data include periodic measurements of volumetric water-content at four experimental sites that represent vegetated native soil, devegetated native soil, and two simulated waste disposal trenches—maximum measurement depths range from 5.25... Categories: Data; Tags: Amargosa Desert, Armagosa Desert Research Site, Climatology, Mojave Desert, Nevada, All tags... Nye County, USGS Science Data Catalog (SDC), atmospheric properties, climatologyMeteorologyAtmosphere, inlandWaters, meteorology, precipitation (atmospheric), soil moisture, unsaturated zone, wind, Fewer tags Mojave Desert Tortoise (Gopherus agassizii) Morphometrics and Egg Data from Seven Sites across the Mojave, (1997-2002) These data were acquired from 7 study sites distributed across the range of Gopherus agassizii. Data were collected from 1997 to 2002 as part of three separate studies, although data were not collected at all sites in each year. Radio-transmitters were attached to the carapace of 151 females and VHF radio-telemetry was used to relocate animals to assess reproductive status. Egg production was determined from X-radiographs taken weekly/biweekly intervals (depending on the study) using a portable X-ray machine between April and July or August of each year. In addition, the mean carapace length (MCL) of each tortoise was measured at each time of capture or recapture using calipers (mm). A nesting event was recorded... Categories: Data; Tags: Area 31, Bird Spring Valley, California, Gopherus agassizii, Lake Mead National Recreation Area, All tags... Mojave Desert, Mojave National Preserve, Mojave desert tortoise, Nevada, Pahcoon Flat, Piute Valley, Redcliffs, Sandstone Mountain, USGS Science Data Catalog (SDC), Utah, Wildlife Biology, X-radiography, biological production, biota, body size, climate change, climatic variability, climatic variation, clutch size, ecology, ecosystem functions, eggs, environmental effects, environmental variables, field inventory and monitoring, radiography, reproduction, reproductive output, reproductive status, reptile, reptiles, size, tortoises, total annual egg production, wildlife, wildlife biology, Fewer tags 1 2 3 4 »