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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 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 Desert Tortoise Ecology and Precipitation, Mojave and Sonoran Deserts—Data Estimated precipitation data were compiled using the WestMap web site (http://www.cefa.dri.edu/Westmap/) from 1995-2013. We selected pixels on the map shown on their web site that were in the core of our study areas: one near Palm Springs, California and the other at Sugarloaf Mountain in the Tonto National Forest of Arizona. WestMap uses PRISM data to make point measurements of climate data and a digital elevation model of terrain to create estimates of monthly climate elements. Estimates are derived for a 4km grid, for ease in mapping and GIS applications. PRISM is an integrated set of rules, decision making, and calculations designed to imitate the process an expert climatologist would go through when mapping... Types: Citation; Tags: Arizona, California, Carapace length, Clutch size, Desert tortoise eggs, All tags... Egg width, Mojave Desert, PRISM data, Palm Springs, San Gorgonio Pass, Seasonal precipitation, Sonoran Desert, Sugarloaf Mountain, Summer precipitation, Tonto National Forest, USGS Science Data Catalog (SDC), WestMap Climate Analysis & Mapping Toolbox, Winter precipitation, X-ray pelvic aperture width, 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 'Viva' native plant material data in support of restoration and conservation These data were compiled to investigate the evolutionary history of Hilaria jamesii, Hilaria mutica, and Hilaria rigida. The data release consists of two tab delimited text files that may be used to infer population structure (viva_structure.stru) or relationships among sampling localities (viva.phylip). Files record genetic variation on an individual (.stru) or sampling locality (.phylip) level. These files may be opened and edited in a text editor program, such as Notepad ++ (PC) or BBEdit (Mac). The .phylip file can be uploaded to phyML or SVDQuartets to generate a tree-based visualization of relationships ( http://www.atgc-montpellier.fr/phyml/ or https://paup.phylosolutions.com, repectively). The .stru file... Tags: Arizona, Botany, California, Colorado, Colorado Plateau, All tags... Ecology, Genetics, Geography, Great Basin, Hilaria jamesii, Hilaria mutica, Hilaria rigida, Information Sciences, Intermountain West, Kansas, Mojave Desert, Nevada, New Mexico, North America, Poaceae, Texas, USGS Science Data Catalog (SDC), Utah, Wyoming, adaptation, biogeography, biota, demographics, demography, ecosystem management, ecosystem management, ecosystem restoration, evolution, genetic diversity, genetics, hybridization, indigenous plants, native plant materials development, native species, phylogeny, phylogeography, population genetics, population structure, remediation, restoration, seed transfer guidelines, seeds, western United States, 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 Microsatellite genotypes for desert tortoise (Gopherus agassizii) in Ivanpah Valley (2015-2017) These data show the multilocus genotypes, gender, and midline carapace length (MCL) for desert tortoises (Gopherus agassizii) sampled in the central portion of the Mojave desert tortoise range. This data supports the following publication: Dutcher, K.E., Vandergast, A.G., Esque, T.C., Mitelberg, A., Matocq, M.D., Heaton, J.S. and Nussear, K.E., Genes in space: what Mojave Desert tortoise genetics can tell us about landscape connectivity. Conservation Genetics, pp.1-15. Categories: Data; Tags: California, Genetics, Ivanpah Valley, Mojave Desert, Nevada, All tags... USGS Science Data Catalog (SDC), Wildlife Biology, biological population management, biota, desert ecosystems, endemic species, genetic diversity, genotype, human impacts, native species, reptiles, Fewer tags Principal components of climate variation in the Desert Southwest for the time periods 1980-2010, 2040-2070 (RCP8.5) and (RCP4.5) This data release has been updated with new files. Please navigate to: Shryock, D.F, DeFalco, L.A., and Esque, T.C., 2019, Principal components of climate variation in the Desert Southwest (ver. 2.0, September 2019): U.S. Geological Survey data release, https://doi.org/10.5066/P9R8YKL0. 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 two time periods: current climate (defined as the 1980-2010 normal period) and future climate (defined as the 2040-2070 normal period)... Tags: Arizona, California, Climatology, Colorado, Colorado Plateau, All tags... Great Basin, Mojave Desert, Nevada, New Mexico, Sonoran Desert, USGS Science Data Catalog (SDC), United States, Utah, atmospheric and climatic processes, climatologyMeteorologyAtmosphere, geospatial analysis, precipitation, Fewer tags Microsatellite genotypes for desert tortoise (Gopherus agassizii) from scat (2016-2018) These data show the multilocus genotypes, as well as extraction and sample genotype quality assessments for desert tortoise (Gopherus agassizii) scat samples. These data support the following publication: Mitelberg, A., Vandergast, A.G., Nussear, K.E., Dutcher, K. and Esque, T.C., 2019. Development of a Genotyping Protocol for Mojave Desert Tortoise Scat. Chelonian Conservation and Biology. https://doi.org/10.2744/CCB-1394.1. Categories: Data; Tags: California, Genetics, Mojave Desert, Nevada, USGS Science Data Catalog (SDC), All tags... biological population management, biota, genetic diversity, genotype, reptiles, Fewer tags Climate Distance Mapper R Script Climate Distance Mapper is an interactive web mapping application designed to facilitate informed seed sourcing decisions and to aid in directing regional seed collections. Implemented as a shiny web application (Chang et al. 2017), Climate Distance Mapper is hosted on the web at: https://usgs-werc-shinytools.shinyapps.io/Climate_Distance_Mapper/. The application is designed to guide restoration seed sourcing in the desert southwest by allowing users to interactively match seed sources with restoration sites climatic differences – in the form of multivariate climate distance values – between restoration sites and the surrounding landscape. Climatic distances are based on a combination of variables likely to influence... 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 Data release for Climatically driven displacement on the Eglington fault, Las Vegas, Nevada, USA The Eglington fault is one of several intrabasinal faults in the Las Vegas Valley, Nevada, USA, and is the only one recognized as a source for significant earthquakes. Its broad warp displaces Late Pleistocene spring deposits of the Las Vegas Formation, which record hydrologic fluctuations that occurred in response to millennial- and submillennial-scale climate oscillations throughout the late Quaternary. The sediments allow us to constrain the timing of displacement on the Eglington fault and identify hydrologic changes that are temporally coincident with that event. The fault deforms deposits that represent widespread marshes that filled the valley between ca. 31.7 and 27.6 ka. These marshes desiccated abruptly... Categories: Data; Tags: Climatology, Eglington fault, Geomorphology, Hydrology, Las Vegas Formation, All tags... Las Vegas, Nevada, Mojave Desert, Seismology, Tule Springs Fossil Beds National Monument, USGS Science Data Catalog (SDC), groundwater discharge, paleohydrology, spring ecosystems, Fewer tags Demography and Habitat of Desert Tortoises at the Desert Tortoise Research Natural Area, Western Mojave Desert, California (1978 - 2014) A long-term research project was conducted on Agassiz’s desert tortoises (Gopherus agassizii) at a 7.77 square kilometer plot at the Desert Tortoise Research Natural Area, Western Mojave Desert, California, USA. The plot included tortoise populations and habitat both inside and outside the protective fence at the Research Natural Area. Databases used in the research and publications from the research project are assembled here and include: census (survey) database used for the demographic analysis and Bayesian modeling of the desert tortoise population; shell-skeletal remains of desert tortoises; clinical signs of health, disease, and trauma in desert tortoises; perennial (shrubs, perennial grasses) and annual plant... Tags: Botany, California, Desert Tortoise Research Natural Area, Ecology, Mojave Desert, All tags... USGS Science Data Catalog (SDC), USGS-EMA-LOW-PL Mojave Desert/SW Desert, USGS-EMA-LOW-SB SMC: Avian, USGS-EMA-LOW-SB T&E: Listed reptiles, Wildlife Biology, Wildlife Disease, biota, carnivores, field inventory and monitoring, habitat fragmentation, human impacts, mathematical modeling, population dynamics, specimen collecting, transect sampling, vascular plants, wildlife disease, Fewer tags Fire Regimes in the Mojave Desert (1972-2010) This U.S. Geological Survey data release consists of 3 raster datasets representing estimates of probability of ignition (ProbIgnitPredict.tif), fire frequency (FrequencyPredictRF.tif), and burn severity (dNBRPredictRF.tif) in the Mojave Desert from 1984 to 2010. The data include: (1) A shapefile of the Mojave Desert that was used as our study area boundary (MojaveEcoregion_TNS_UTM83.shp). The original shapefile was obtained from NatureServe in 2009; (2) Three Tagged-Interchange Format (TIF) raster datasets representing probability of ignition, fire frequency, and burn severity. Resolution equals 30 meters, projection equals UTM Zone 11N. These data support the following publication: Klinger, R., Underwood, E.C.,... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ecology, Environmental Health, Mojave Desert, Remote Sensing, USGS Science Data Catalog (SDC), All tags... biota, burn severity, co-occurence invasives, desert ecosystems, ecosystems, environmental gradients, field methods, fire disturbance, fire frequency, fires, geographic gradients, geographic information systems, grass-fire cycle, habitat alteration, ignition, imageryBaseMapsEarthCover, invasive plant species, invasive species, machine learning, maximum entropy, plants (organisms), random forests, remote sensing, spatial dynamics, vegetation, Fewer tags Mojave Desert ants in and around a solar facility, derived from pitfall trap sampling in 2018 Abundance, richness, diversity, community composition, and functional traits of ants in the Mojave Desert relative to solar energy development decisions Categories: Data; Tags: California, Ecology, Ivanpah Valley, Mojave Desert, Mojave Desert, All tags... USGS Science Data Catalog (SDC), ants, biota, solar energy, Fewer tags Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Special Features Points The Central Mojave Special Features shapefile provides point locations for known or potential places where vegetation alliances or unique stands occurred (from 1997-1999) with less than 5 hectares of spatial extent. These designations were provided separately from the Mojave Vegetation Polygons because the target standard for the polygons was a minimum mapping unit (MMU) of 5 hectares, thus methods used at the time to assign labels precluded mapping these special features as polygons. The special features points are still included because it is important to note the known or potential location of vegetation alliances for future mapping at finer spatial resolution. The metadata record (Mojave-Vegetation-Mapping_Special-Features-Points-Metadata.xml)... 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, All tags... Desert southwest, Ft. Irwin Military Reservation, Marine Corps Air Ground Combat Center, Mojave Desert, Mojave National Preserve, Mojave plants, Mojave vegetation, National Vegetation Classification, North America, United States, arid lands, biota, southern California, special features, vegetation, vegetation alliances, Fewer tags Species distribution model of the invasive annual forb Erodium cicutarium (red-stemmed filaree) in the Mojave Desert 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, All tags... Grass-fire cycle, Invasive species, Mojave Desert, Mojave Desert, Schismus spp, Species distribution models, biota, desert ecosystems, disturbance, ecosystems, field methods, fire, fire frequency, fires, geographic information systems, habitat alteration, imageryBaseMapsEarthCover, invasive species, plants (organisms), remote sensing, vegetation, Fewer tags Golden Eagle food habits in the Mojave Desert: Regional information for a changing landscape 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, All tags... Nevada, Prey selection, Renewable energy resources, USGS Science Data Catalog (SDC), biota, Fewer tags Fire Patterns among Ecological Zones in the California Desert, 1984-2013 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... Categories: Data; Tags: California, Colorado Desert, Great Basin, Mojave Desert, Mono, All tags... Sonoran Desert, Southeastern Great Basin, USGS Science Data Catalog (SDC), biophysical settings, deserts, wildfire frequency, wildfire regimes, Fewer tags Empirical and Provisional Seed Transfer Zones for the Mojave Desert and Surrounding Regions (ver. 2.0, January 2021) 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,... Tags: Arizona, California, Colorado, Colorado Plateau, Great Basin, All tags... Mojave Desert, Nevada, New Mexico, Sonoran Desert, USGS Science Data Catalog (SDC), Utah, atmospheric and climatic processes, biota, genetic diversity, genetic variation, geospatial analysis, local adaptation, native plant, restoration, seed transfer zone, Fewer tags 1 2 »