
Southwest Biological Research Center
https://www.usgs.gov/centers/sbsc
Location
Building 4 & 5
2255 North Gemini Drive
Flagstaff
, AZ
86001
USA
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These data represent simulated soil temperature and moisture conditions for current climate, and for future climate represented by all available climate models at two time periods during the 21st century. These data were used to: 1) quantify the direction and magnitude of expected changes in several measures of soil temperature and soil moisture, including the key variables used to distinguish the regimes used in the R and R categories; 2) assess how these changes will impact the geographic distribution of soil temperature and moisture regimes; and 3) explore the implications for using R and R categories for estimating future ecosystem resilience and resistance.
Tags: Alberta,
Arizona,
British Columbia,
California,
Canada, All tags...
Climatology,
Colorado,
Ecology,
Geography,
Idaho,
Information Sciences,
Kansas,
Manitoba,
Minnesota,
Montana,
Nebraska,
Nevada,
New Mexico,
North Dakota,
Oklahoma,
Oregon,
Saskatchewan,
Soil Sciences,
South Dakota,
Texas,
USGS Science Data Catalog (SDC),
United States,
Utah,
Washington,
Wyoming,
aridification,
aridity,
big sagebrush ecosystems,
biota,
cheatgrass,
clay loam,
climate,
climate change,
climate models,
concentration pathways,
drought resistance,
droughts,
ecological model,
ecological transformation,
ecosystem resilience,
future time periods,
historical conditions,
resilience,
sandy loam,
silt loam,
soil temperature,
soil types,
vulnerability, Fewer tags
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These data were collected as part of a methodologial comparison for collecting riparian vegetation data. Two common methods for collecting vegetation data were used: line-point intercept and 1m2 ocular quadrats (visual cover estimates). At each site and transect, both methods were used to collect cover and composition data by four different observers. The same transects and quadrats were utilized for both methods and all observers. Field data collected included percent cover for total living foliar cover, each plant species encountered, litter, dead plant material that is still standing, and ground cover features (biological soil crust, rock, sand, and fine soil particles). Line-point intercept data were collected...
Tags: Arizona,
Botany,
Colorado River,
Ecology,
Geography, All tags...
Glen Canyon Dam,
Glen Canyon National Recreation Area,
Grand Canyon,
Information Sciences,
Lees Ferry,
USGS Science Data Catalog (SDC),
biological sampling,
biota,
field sampling,
line-point intercept,
northern Arizona,
ocular quadrat,
riparian ecosystems,
riparian environments,
riparian vegetation,
vegetation,
vegetation sampling methods, Fewer tags
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These plant and soil data were collected by Timothy M. Wertin and Sasha C. Reed in the spring, summer, and fall of 2011 at a climate manipulation experiment site near Moab, UT (38.521411, -109.470567). These data were collected to assess how warming affects leaf photosynthesis, soil CO 2 efflux, and soil chemistry in plots of ambient and warming treatments.
Types: Citation;
Tags: Achnatherum hymenoides,
Ambient air temperature,
Ambient relative humidity,
Colorado Plateau,
Foliar gas exchange, All tags...
Grand County,
Indian ricegrass,
Leaf intercellular CO2 concentration,
Leaf temperature,
Meteorology,
Moab,
Photosynthesis,
Photosynthetically active radiation,
Plant biomass,
Precipitation,
Reproductive inflorescence,
Soil CO2 efflux,
Soil nutrients,
Soil temperature,
Soil volumetric water content,
Southwestern United States,
Stomatal conductance,
USGS Science Data Catalog (SDC),
United States,
Utah, Fewer tags
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The dataset describes rangeland monitoring results from the Hanksville, UT (USA) area. Monitoring results consist of canopy cover of plant species and functional types according to ecological site group from 1967 to 2013. The study area is bordered on the north by the Wayne-Emery County line, on the west by Capitol Reef National Park, and on the south and east by the Colorado River, Glen Canyon National Recreation Area, and Canyonlands National Park. Cover was estimated every 1 to 5 years (except the last measurement that had a 12 year interval) from 1967 to 2013 at 36 permanently marked sites in 15 livestock grazing allotments/pastures. Canopy cover of perennial plant species was estimated to the nearest tenth...
Types: Citation;
Tags: Climate change,
Colorado Plateau,
Ecological sites,
Garfield County,
Grazing, All tags...
Hanksville,
Land-use change,
Landscape Scale,
Plant Responses,
Precipitation,
Rangeland Monitoring,
San Juan County,
Soils,
State-and-transition models,
USGS Science Data Catalog (SDC),
United States,
Utah,
Vegetation,
Wayne County, Fewer tags
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These data were compiled during a laboratory experiment showing the turbidity response to increasing silt and clay concentration. The sediment used for the laboratory experiment was collected in the Grand Canyon study area, from the bank of the Little Colorado River, approximately 1 kilometer upstream from its confluence with the Colorado River. The sediment was passed through a 63 µm sieve to isolate the silt-and-clay-size fraction. The silt and clay was completely dried in an oven (at 105 degrees Celsius for 12 hours), weighed, mechanically disaggregated, and added in stages to a measured volume of water to calculate concentration. The sediment was kept in suspension with an electric stirrer and turbidity was...
Tags: Arizona,
Colorado River,
Grand Canyon,
Information Sciences,
Little Colorado River, All tags...
Marble Canyon,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
clay concentration,
false low turbidity,
laboratory experiment data,
linear response,
maximum recording level,
maximum response,
negative response,
silt concentration,
turbidity, Fewer tags
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