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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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These data consist of species relative cover, percent cover of dead plant material, percent cover of soil and rock, and a variety of broad - and local- scale environmental variables. These data relate to sample sites along the Colorado River through Grand Canyon between Lees Ferry and river mile 245. The plant and ground cover data included here were originally collected as a part of annual vegetation monitoring by Grand Canyon Monitoring and Research Center. Environmental variables were either recorded in the field or obtained through other data sources. Species and ground cover data were collected in August and September 2014 at 96 randomly selected sample sites that were approximately evenly distributed along...
Types: Citation;
Tags: American Southwest,
Arizona,
Colorado River,
Environmental variables,
Grand Canyon, All tags...
Landscape ecology,
Riparian vegetation,
Southwestern United States,
USGS Science Data Catalog (SDC),
United States,
Vegetation composition, Fewer tags
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Folder containing published science data & metadata by year, research scientist and an abbreviated description of the manuscript title or project.
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These data were used to examine how post-fire sedimentation might change in western USA watersheds with future fire from the decade of 2001-10 through 2041-50. The data include previously published projections (Hawbaker and Zhu, 2012a, b) of areas burned by future wildfires for several climate change scenarios and general circulation models (GCMs) that we summarized for 471 watersheds of the western USA. The data also include previously published predictions (Miller et al., 2011) of first year post-fire hillslope soil erosion from GeoWEPP that we summarized for 471 watersheds of the western USA. We synthesized these summarized data in order to project sediment yield from future fires for 471 watersheds through the...
Categories: Data;
Types: Citation;
Tags: A1B emission scenario,
A2 emission scenario,
Annual Post-fire Sediment Yield,
Arizona,
Average Burned Area, All tags...
B1 emission scenario,
Burned area projections,
California,
Climate Change,
Colorado,
Decadal summaries,
Erosion,
First year post-fire,
Future post-fire sediment yield,
Future wildfires,
GCM,
GIS-based erosion model,
General circulation model,
HUC,
HUC8,
Hillslope soil erosion rates,
Hydrologic unit code,
Idaho,
Montana,
Nevada,
New Mexico,
Oregon,
Post-fire,
Projected watershed sediment yield,
Sediment,
Sediment yield,
Simulations,
USGS Science Data Catalog (SDC),
Utah,
Washington,
Watershed sediment yield estimates,
Watersheds,
Western US,
Wildfire perimeters,
Wildfires, Fewer tags
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These data represent reproductive ecology characteristics for 4 species of mature female turtles captured at Elephant Butte Reservoir on the Rio Grande River in New Mexico, during two field survey periods in June 2012 and 2013. Data were collected on female reproductive ecology including clutch size, egg size, timing of egg production, and the percentage of reproductive females using X-radiography. The purpose of these data are to add to the deficient information on the reproductive ecology of four turtle species at the Elephant Butte Reservoir on the Rio Grande and Black River in New Mexico. Data contained in this worksheet were analyzed to determine clutch and egg sizes for four native species of turtles (Apalone...
Types: Citation;
Tags: A. spinifera,
Black River,
C. picta,
Clutch size,
Digital X-ray system, All tags...
Ecology,
Eddy County,
Egg size,
Egg width,
Elephant Butte Reservoir,
Hoop traps,
Nesting,
New Mexico,
P. gorzugi,
Pecos River,
Reproductive females,
Rio Grande River,
Sierra County,
Southwest United States,
Straight-line carapace lengths,
T. gaigeae,
T. gaigeae/scripta,
T. scripta,
T. scripta x T. gaiegea hybrid,
T.scripta/troosti,
Trapping,
Turtle,
USGS Science Data Catalog (SDC),
United States,
X-radiography, Fewer tags
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