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These data were compiled to explore the foraging ecology of Rainbow Trout (Oncorhynchus mykiss) in the Colorado River, Grand Canyon, Arizona. These data represent samples characterizing the availability of drifting invertebrate prey (hereafter, drift) and use of these invertebrate prey by rainbow trout determined by gut samples (hereafter, diets). Drift and diet sampling occurred in five distinct reaches downstream of Glen Canyon Dam (river kilometer (rkm) from the dam): (I) rkm 16.3-21.7; (II) rkm 52.8-58.3; (III) rkm 86.6-91.9; (IV) rkm 122.0-123.6; and (V) rkm 127.1-129.6. Samples were taken on 12 trips in April, July, September and January from April 2012 through January 2015. The aquatic prey base consists...
Categories: Data;
Tags: Aquatic Biology,
Arizona,
Bayesian discrete choice model,
Colorado River,
Ecology, All tags...
Geography,
Glen Canyon Dam,
Grand Canyon,
Information Sciences,
New Zealand mudsnail,
USGS Science Data Catalog (SDC),
amphipod crustacean,
aquatic Diptera,
aquatic biology,
aquatic ecosystems,
aquatic prey,
aquatic worms,
biota,
black flies,
crustaceans,
diet,
discrete choice models,
drift,
drifting invertebrate prey,
ecological processes,
ecology,
field sampling,
forage,
foraging,
gut samples,
invertebrate drift,
invertebrates,
mathematical modeling,
midges,
predation,
predator,
prey,
prey selection,
rainbow trout,
samples,
sampling,
worms, Fewer tags
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Two unique datasets were gathered to document whether flow management for hydropower affects the abundance and diversity of aquatic insect assemblages. The first dataset was collected in Grand Canyon from 2012-2014 by citizen scientists rafting the Colorado River. Simple light traps were set out each night in camp and used to capture the adult life stages of aquatic insects that emerged from the Colorado River. Three aquatic insect taxa were captured in sufficient abundance to analyze statistically including midges (order Diptera, family Chironomidae), micro-caddisflies (order Trichoptera, family Hydroptilidae), and blackflies (order Diptera, family Simuliidae, principally Simulium arcticum). These data were used...
Types: Citation;
Tags: Adult aquatic insects,
Arizona,
Biodiversity,
Biological traits,
California, All tags...
Causey Dam,
Citizen science,
Colorado,
Colorado Plateau,
Colorado River,
Crystal Dam,
Dam,
Deer Creek Dam,
EPT,
EPT taxa,
Echo Dam,
Ephemeroptera,
Flaming Gorge Dam,
Flood elevation,
Fontenelle Dam,
Glen Canyon Dam,
Grand Canyon,
Green River,
Gunnison River,
High water line,
Holter Dam,
Hoover Dam,
Idaho,
Kootenai River,
Libby Dam,
Light trapping data,
Light traps,
Lower Provo River,
Missouri River,
Montana,
Navajo Dam,
Nevada,
New Mexico,
Ogden River,
Oregon,
Owyhee Dam,
Owyhee River,
Pine Flat Dam,
Plecoptera,
River,
River ecology,
San Juan River,
Starvation Dam,
Strawberry River,
Tongue Dam,
Tongue River,
Trichoptera,
USGS Science Data Catalog (SDC),
United States,
Utah,
Wanship Dam,
Weber River,
Western United States,
Wyoming, Fewer tags
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Two unique datasets on the abundance and morphology of the angel lichen moth (Cisthene angelus) in Grand Canyon, Arizona, USA were compiled to describe the phenology and life history of this common, but poorly known, species. The abundance data were collected from 2012 to 2013 through a collaboration with river runners in Grand Canyon National Park. These citizen scientists deployed light traps from their campsites for one hour each night of their expedition. Insects were preserved in ethanol on site, and returned to the Southwest Biological Science Center in Flagstaff, Arizona for analysis in the laboratory. A total of 2,437 light trap samples were sorted through, 903 of which contained C. angelus. In total, 73,841...
Types: Citation;
Tags: Abundance,
Angel lichen moths,
Arizona,
Cisthene angelus,
Citizen science, All tags...
Coconino County,
Colorado Plateau,
Colorado River,
Diamond Creek,
Elevation gradient,
Environmental gradients,
Grand Canyon,
Lees Ferry,
Life history,
Light traps,
Maturation,
Mohave County,
Morphology,
Page,
Peach Springs,
Phenology,
Reproduction,
Riverine environment,
Southwest United States,
USGS Science Data Catalog (SDC),
Voltinism,
Wing length,
northern Arizona, Fewer tags
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Consumption rates and total mercury concentration of food items and consumers collected at six sites on the Colorado River in the Grand Canyon. Sites ranged from 0-367 river kilometers downstream of Lees Ferry (AZ, USA). Samples were analyzed for total Hg using cold vapor atomic fluorescence (CVAF, Tekran Model 2600 CVAF spectrometer) following EPA Method 7474. Consumption rate samples were collected quarterly from July 1, 2007 to June 30, 2009. Food items and consumers were collected June 12-28 2008.
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This dataset includes total phosphorus (TP), total nitrogen (TN), and total carbon (TC) concentrations as well as δ15N and δ13C composition, and overall C:N:P stoichiometry for adult emergent Diptera from the Colorado River, Grand Canyon, AZ. The samples were collected before and after a fire and subsequent storm occurred in the Shinumo Watershed, a tributary to the Colorado River in Northern Arizona. Diptera specimens were collected via light traps placed on the banks of the Colorado River 25 miles above and 25 miles below Shinumo Creek (river miles 85-135) between 2013 and 2015. This data series contains Diptera TP concentrations (in mg P per mg Diptera) for 44 samples from 11 location/date combinations. We also...
Tags: Arizona,
C isotope composition,
C:N:P stoichiometry,
Colorado River,
Diptera, All tags...
Ecology,
Geochemistry,
Geography,
Grand Canyon,
Hydrology,
Information Sciences,
Limnology,
N isotope composition,
Shinumo Creek,
Shinumo Watershed,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
biota,
carbon,
field sampling,
fires,
flies,
inlandWaters,
light traps,
nitrogen,
northern Arizona,
nutrient assimilation,
nutrient stoichiometry,
phosphorus,
river ecosystems,
samples,
stable isotope,
stable isotope analysis,
stoichiometry,
storms,
total carbon concentrations,
total nitrogen concentrations,
total phosphorus concentrations,
δ13C composition,
δ15N composition, Fewer tags
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