Filters: Tags: Mojave Desert (X) > partyWithName: U.S. Geological Survey, Western Ecological Research Center (X)

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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 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 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 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 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 Perennial (shrubs, perennial grasses) and Annual Plant Data from Transects at the Desert Tortoise Research Natural Area, 1989, 1993, 1997, 2002, and 2012 Data on annual and perennial plants were collected during four survey years (1989, 1993, 1997, and 2012) at a 7.77 sq. km the Desert Tortoise Research Natural Area in the western Mojave Desert as part of a long-term research project on populations and habitat of the threatened desert tortoise (Gopherus agassizii) spanning 34 years. The data collection and analysis involved comparisons of vegetation inside and outside the fenced Desert Tortoise Research Natural Area. Categories: Data; Tags: California, Desert Tortoise Research Natural Area, Mojave Desert, USGS-EMA-LOW-PL Mojave Desert/SW Desert, biota, All tags... field inventory and monitoring, transect sampling, vascular plants, 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 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 Shell-skeletal Remains of Gopherus agassizii Collected at the 7.77 square km plot at the fenced Desert Tortoise Research Natural Area in 1985, 1989-1993, 1997-2002, and 2012. The database on shell-skeletal remains from 1980 through 2012 was collected as part of a monograph covering the desert tortoise populations inside and outside the fenced Desert Tortoise Research Natural Area during a period of population decline. The principal objectives of the study were to compare trends in demographic and habitat data inside the protective fence with those outside the fence. Populations and habitat outside the fence were unprotected from recreational vehicle use and sheep grazing. Data for each shell-skeletal remain found on the long-term, 7.77 square kilometers plot, included carcass number, previous number as a live tortoise, date of collection, date last observed if marked; known or estimated... Categories: Data; Tags: Desert Tortoise Research Natural Area, Mojave Desert, USGS-EMA-LOW-PL Mojave Desert/SW Desert, USGS-EMA-LOW-SB T&E: Listed reptiles, biota, All tags... population dynamics, specimen collecting, 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 Predictive Model of Burn Severity (dNBR) in the Mojave Desert This raster dataset represents spatially explicit predictions of burn severity (dNBRPredict.tif) in the Mojave Desert based on models developed from data on the difference normalized burn ratio (dNBR) within perimeters of fires greater than 405 hectares that burned between 1984 to 2010. Raster resolution equals 30 meters, projection equals UTM Zone 11N. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Grass-fire cycle, Mojave Desert, Mojave Desert, Predictive models, Random forests, All tags... biota, burn severity, dNBR, desert ecosystems, disturbance, ecosystems, field methods, fire, fire frequency, fire regimes, fires, geographic information systems, heterogeneity, imageryBaseMapsEarthCover, invasive species, plants (organisms), remote sensing, spatial models, vegetation, 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 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 Predictive Model of Probability of Ignition in the Mojave Desert This raster dataset represents spatially explicit predictions of probability of ignition in the Mojave Desert based on models developed from data on perimeters of fires greater than 405 hectares that burned between 1972 to 2010. Raster resolution equals 30 meters, projection equals UTM Zone 11N. Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Grass-fire cycle, Maxent, Mojave Desert, Mojave Desert, Predictive models, All tags... biota, burn severity, desert ecosystems, disturbance, ecosystems, field methods, fire, fire frequency, fire regimes, fires, geographic information systems, heterogeneity, igntion probability, imageryBaseMapsEarthCover, invasive species, plants (organisms), remote sensing, spatial models, vegetation, Fewer tags Principal components of climate variation in the Desert Southwest for the time period 1980-2010 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, 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 (ver. 2.0, September 2019) 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, All tags... 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 Cover of Woody and Herbaceous Functional Groups in Burned and Unburned Plots, Mojave Desert, 2009-2013 Arid ecosystems are often vulnerable to transformation to invasive-dominated states following fire, but data on persistence of these states are sparse. The grass/fire cycle is a feedback process between invasive annual grasses and fire frequency that often leads to the formation of alternative vegetation states dominated by the invasive grasses. However, other components of fire regimes, such as burn severity, also have the potential to produce long-term vegetation transformations. Our goal was to evaluate the influence of both fire frequency and burn severity on the transformation of woody-dominated communities to communities dominated by invasive grasses in major elevation zones of the Mojave Desert of western... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mojave desert, USGS Science Data Catalog (SDC), biological invasions, chronosequence, community structure, All tags... deserts, disturbance, ecological processes, ecosystems, fire regimes, fires, habitat alteration, invasive species, plants, resilience, resistance, secondary succession, Fewer tags 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 2010-2040 (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 2010-2040 normal period) under the RCP4.5 emission scenario. 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 1 2 »