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Filters Date Range Past year (4) Past month (1) Past week (0) Past day (0) Custom range... To   Search Contacts Southwest Biological Science Center Ecosystems U.S. Geological Survey Theodore A Kennedy Kathryn A Thomas More... Categories Data (5) Tag Types Theme (9) Place (9) USGS Scientific Topic Keyword (8) Harvest Set (9) Tag Schemes None (7) USGS Thesaurus (9) Geographic Names Information System (GNIS) (9) none (1) ISO 19115 Topic Categories (7) USGS Biocomplexity Thesaurus (3) USGS information products (4) More... View Results as: JSON ATOM CSV

Russian-thistle field and seed bank data at Petrified Forest National Park, Arizona, 2015-2016 These data were compiled as part of a field and growth chamber study of the establishment of Salsola tragus (Russian thistle), an invasive non-native annual plant in North America. Field work was conducted at Petrified Forest National Park, Arizona in 2015 and 2016 and the growth chamber study was conducted in 2016. The data represent field measurements of Salsola germination and growth (cover) and sediment movement at two field sites, one a stabilized sand sheet (SS) and the other on the ridge of a sand dune (SD). The data also represent a growth chamber assessment of the soil and litter seed bank from representative samples take at the two field sites. Tags: Arizona, Botany, Colorado Plateau, Ecology, Geography, All tags... Information Sciences, Land Use Change, North America, Petrifield Forest National Park, Salsola, USGS Science Data Catalog (SDC), annual plants, biota, cover, field data, field measurements, field monitoring, field observation, germination, growth, growth chamber, invasive plant, invasive species, litter seed bank, non-native plant, non-native species, plants (organisms), sand dune ridge, sediment, sediment movement, seed bank, seed germination, soil seed bank, southwest United States, stabilized sand sheet, Fewer tags Rainbow trout growth data and growth covariate data downstream of Glen Canyon Dam in the Colorado River, Arizona, 2012 - 2016 These data are the primary data used to estimate rainbow trout abundance and survival in the Colorado River, Glen and Grand Canyons. Refer to the analyses as per the associated journal manuscript (see Larger Work Citation). Prey availability, feeding efficiency, and competition reduce somatic growth and cause the collapse of a fish population" Nighttime boat electrofishing was used to sample rainbow trout four times per year in April, July, September, and January, from April 2012 through September 2016. A total of five reaches were sampled between Glen Canyon Dam (river kilometer [rkm] 0) to below the confluence with the Little Colorado River (located at rkm 130). Reaches ranged from two to six km in length. A total... Tags: 95% confidence intervals, Aquatic Biology, Arizona, Buck Farm, Colorado River, All tags... Ecology, Geography, Glen Canyon, Glen Canyon Dam, Grand Canyon, House Rock, Information Sciences, Lees Ferry, Little Colorado River, Marble Canyon, Paria River, USGS Science Data Catalog (SDC), Water Resources, Wildlife Biology, abiotic, biogeography, biotic, covariate data, date, electrofishing, field data, field inventory and monitoring, field sampling, fish, fish, fish capture, fish distribution, fish length, fish recapture, fish weight, fork length, freshwater, freshwater ecosystems, freshwater salmonid, growth modelling, lower Colorado River, lower Colorado River confluence, lower Marble Canyon, mark-recapture study, measurements, middle Marble Canyon, passive integrated transponders (PIT), rainbow trout, rainbow trout abundance, river ecosystems, river reaches, shoreline sites, somatic growth, tailwater, time, time series datasets, trip interval, upper Marble Canyon, Fewer tags Environmental, biological, and leaf litter decomposition data in the Colorado River downstream of Glen Canyon Dam between 1998 and 2022 Yes, all data values are reasonable and within the valid range for measurement. The data release consists of 15 tabular data files (csv). These data were compiled to compare patterns and potential drivers of leaf litter decomposition in the Colorado River downstream of Glen Canyon Dam between 1998 and 2022. Objective(s) of our study were to compare the breakdown of cottonwood (Populus fremontii), willow (Salix exigua), and salt cedar (Tamarix chinensis) leaves to a previous decomposition experiment from 1998 (Pomeroy et al. 2000) that was conducted in the context of much cooler water temperatures, higher phosphorus concentrations, lower New Zealand mudsnail densities, and salt cedar litter that was unaffected by... Categories: Data; Tags: Aquatic Biology, Arizona, Colorado River, Ecology, Geography, All tags... Glen Canyon Dam, Hydrology, Information Sciences, Lake Powell, New Zealand mudsnail, Populus fremontii, Salix exigua, Tamarix chinensis, USGS Science Data Catalog (SDC), USGS:6500d7ead34ed30c20580390, Water Resources, air temperature, beetle, biochemistry, biomass, biota, climatologyMeteorologyAtmosphere, community composition, community ecology, cottonwood, data release, decay rates, decomposition, detritus, environment, field data, field experiments, field sampling, growth, inlandWaters, invasive species, invertebrates, laboratory experiments, leaf, leaf litter, leaf litter chemistry, leaf litter mass, leaf mass, leaf nutrient content, leaf pack, litter, nutrient content (water), phosphorus, physicochemical variable, population and community ecology, relative abundance analysis, reservoir storage, river ecosystems, saltcedar, stream discharge, vegetation, warming, water chemistry, water nutrient data, water temperature, willow, Fewer tags Discharge and water temperature data, Lake Powell thermal profiles, and Annual Thermal Units used to assess reintroduction feasibility of Colorado pikeminnow (Ptychocheilus lucius) in the Colorado River in Grand Canyon These data were compiled to assess the physical attributes of the Colorado River and its tributaries in Grand Canyon, including discharge, water temperature, Annual Thermal Units, and the potential future thermal regime of the river due to climate change. The objective of our study was to assess whether this river reach could support various life stages of Colorado pikeminnow (Ptychocheilus lucius). These data represent discharge and water temperature in the river segment between Glen Canyon Dam and the Lake Mead inflow, as well as data from Lake Powell that drive water temperatures in Grand Canyon. These data were collected in the Colorado River in Grand Canyon from 1/1/1950 to 9/8/2021. These data were collected... Categories: Data; Tags: Aquatic Biology, Arizona, Colorado River, Ecology, Geography, All tags... Glen Canyon Dam, Grand Canyon, Havasu Creek, Hydrology, Information Sciences, Kanab Creek, Lake Mead, Lake Powell, Lees Ferry, National Canyon, Pearce Ferry, Ptychocheilus lucius, USGS Science Data Catalog (SDC), USGS stream gage, Wahweap Station, Water Quality, Water Resources, annual thermal units, climate change, climatologyMeteorologyAtmosphere, colorado pikeminnow, daily discharge, data release, elevation, environment, field data, field inventory and monitoring, field observation, gage 09380000, habitat suitability, inflow, inlandWaters, reintroduction feasibility, reservoir surface elevation, spatial change, stream discharge, stream-gage measurement, surface elevation, temporal change, thermal profiles, water temperature, western Grand Canyon, Fewer tags Environmental conditions, covariate data used in model fitting, and long-term establishment predictions from 1979 to 2016 in the Great Basin, USA Data was collected to characterize the conditions under which sagebrush occurs after seeding and wildfire in the Great Basin, and used to parameterize models used to explore adaptive seeding approaches. Data includes plot level field data on sagebrush occurrence, density, weather, and soil moisture conditions in the year that seeding after wildfire occurred. Weather data includes both average annual summaries and average weather at 5-day intervals from day 1-250 of the year of seeding. Also included are summaries of annual temperature and soil moisture conditions from 1979 to 2016 and model predictions of the probability of sagebrush establishment in each of these years. Tags: Artemisia tridentata, California, Ecology, Environmental Health, Geography, All tags... Great Basin, Idaho, Information Sciences, Nevada, Oregon, Soil Sciences, USGS Science Data Catalog (SDC), Utah, adaptive management, adaptive seeding approaches, big sagebrush, biota, climate change, density, drylands, environmental variability, field data, precipitation, predicted sagebrush probabilities, sagebrush occurrence, snow water equivalent, snowpack, soil moisture, temperature, weather, western United States, Fewer tags Soil surface properties and roughness data at two experimental restoration sites within the Southwestern USA This data release presents data used for analyzing spatial and temporal differences in soil surface roughness within selected biocrust communities. These records were collected by ground-based lidar for 121, 1m x 3m soil plots with biological soil crusts (biocrusts). Roughness was estimated from 5 mm resolution data (CloudCompare v. 2.10.2, 2019) for two Great Basin Desert sites (UTTR-1; UTTR-2) in December 2015 and one Chihuahuan Desert site (JER) in February 2016. Data were again collected in June 2018 for UTTR-1 and UTTR-2. Additional field and laboratory data were included within this study to understand differences in soil surface roughness between UTTR and JER as well as between the 2016 and 2018 surveys at... Categories: Data; Tags: 5 mm resolution, Chihuahuan Desert, Ecology, Geography, Geomorphology, All tags... Great Basin, Great Basin Desert, Hill Air Force Base, Information Sciences, Jornada Experimental Range, Las Cruces, New Mexico, Remote Sensing, Salt Lake City, Soil Sciences, USGS Science Data Catalog (SDC), Utah, biocrust, biological soil crusts, biological treatment, biota, data release, digital point cloud, ecosystem disturbance, experimental restoration treatments, field data, field experiments, field inventory and monitoring, field methods, geoscientificInformation, ground-based lidar, habitat alteration and disturbance, laboratory data, laboratory experiments, laboratory methods, lidar, plot sampling, remediation, soil morphology, soil plots, soil resources, soil surface roughness, southwestern United States, Fewer tags Injury and abnormality data for southwestern pond turtles (Actinemys pallida) from 3 sites along the Mojave River, California from separate surveys in 1998-1999 and 2017-2019 These data were compiled to assess the size, structure, and health of various populations of Actinemys pallida along the length of the Mojave River. Objective(s) of our study were to determine the extent of injuries and abnormalities within our Actinemys pallida populations (including statistical analyses comparing injuries with turtle sex and size) and estimate the cause(s) of the injuries and abnormalities. These data represent injuries and abnormalities from the effects of physical hazards encountered by turtles in their habitats. These data were collected in the Mojave Desert of California at three separate study sites along a length of the Mojave River in San Bernardino County between May 1998–October 1999... Categories: Data; Tags: Actinemys pallida, Afton Canyon Area of Critical Environmental Concern, Aquatic Biology, California, Camp Cady Wildlife Area, All tags... Ecology, Geography, Information Sciences, Mojave Desert, Mojave River, San Bernardino County, USGS Science Data Catalog (SDC), Wildlife Biology, abnormalities, biogeography, biota, capture, datasets, ecology, field data, field inventory and monitoring, habitats, health, hoop traps, injuries, physical health, population and community ecology, sexing (plants & animals), size, structures (animal-constructed), traps, turtles, Fewer tags Community-level riparian plant traits, Colorado River, Grand Canyon, 2013-2015—Data These data were compiled based on field observations and available literature. Field observations of plant cover were made in September and October of 2013 and 2014, while trait measurements were made in September and October of 2014 and 2015. Field data was collected on sandbars along the Colorado River through Grand Canyon between river miles 0 and 226. Field measurements of specific leaf area, stem specific gravity, and total cover. Plant height was taken from the Flora of North America, the Jepson Desert Manual, or A Utah Flora. Seed mass values were available from the Kew Seed Information Database (http://data.kew.org/sid/). Photosynthetic pathway was compiled from published literature. The trait values were... Tags: Arizona, Colorado River, Community assembly, Community-level trait value, Diamond Creek, All tags... Environmental gradient, Exceedance probability, Field data, Field measurements, Field observations, Flood disturbance adaptation, Functional traits, Glen Canyon Dam, Grand Canyon, Inundation, Lees Ferry, Literature review, Marble Canyon, Photosynthetic pathway, Plant cover, Plant height, Relative species cover, Riparian plants, Sandbars, Seed mass, Species cover, Specific leaf area, Stem specific gravity, Stress adaptation, Total cover, Trait measurements, Trait values, USGS Science Data Catalog (SDC), Fewer tags Bat activity and insect abundance data along the Colorado River in Grand Canyon, AZ These data were compiled to improve our understanding of bat foraging along the Colorado River in Grand Canyon. Objectives of our study were to determine whether bat activity was influenced primarily by variation in prey availability relative to other environmental or geomorphic factors. These data represent 1,428 paired samples of bat activity and insect abundance calculated as catch rates collected on 611 sampling nights at 410 sampling sites throughout a 470 km segment of river. These data were collected from April to October in 2017-2020 at recreational camps along the Colorado River in Grand Canyon between Glen Canyon Dam and Pearce Ferry. These data were collected through a U.S. Geological Survey led community... Categories: Data; Tags: Aquatic Biology, Colorado River, Ecology, Geography, Glen Canyon, All tags... Glen Canyon Dam, Glen Canyon National Recreation Area, Grand Canyon, Grand Canyon National Park, Havasupai, Havasupai Reservation, Hopi, Hualapai, Hualapai Indian Reservation, Hydrology, Information Sciences, Kaibab Band of Paiute Indians, Las Vegas Band of Paiute Indians, Limnology, Navajo, Navajo Nation Reservation, Paiute Indian Tribe of Utah, Pearce Ferry, Pueblo of Zuni, San Juan Southern Paiute Tribe, USGS Science Data Catalog (SDC), Yavapai-Apache, acoustic data, acoustic recorders, aquatic biology, aquatic ecosystems, aquatic insects, aquatic-terrestrial linkages, bat activity, bat call recordings, bat foraging, bats, biota, catch rates, citizen science programs, data release, ecology, environmental variables, field data, field inventory and monitoring, field sampling, foraging ecology, indigenous land, insect abundance, insect catch rates, insect emergence, insects, light trap catch rates, light traps, riparian foodwebs, sample data, temporal variables, wetland ecosystems, Fewer tags