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These data were used to examine drivers behind changes in water temperature downriver of dams across the western U.S. from 1995-2015 and the influence of such changes on rainbow trout recruitment and rainbow and brown trout adult length. First, we linked reservoir storage capacity and dam size to the warmest monthly water temperature per water year (WY) to assess the influence of low storage capacity (shallow reservoirs) on downstream water temperature. We then took results from previously published Generalized Linear Mixed Models (GLMM) that assessed the influence of physical and biological predictors (e.g., flow, trout density, reservoir metrics) on trout recruitment and adult size and added mean annual, maximum...
Tags: Arizona,
Bighorn River,
Colorado,
Colorado River,
Green River, All tags...
Idaho,
Kootenai River,
Madison River,
Missouri River,
Montana,
Muddy Creek,
New Mexico,
Oregon,
Owyhee River,
San Juan River,
South Fork Boise River,
USGS Science Data Catalog (SDC),
Utah,
brown trout,
brown trout adult length model,
dam,
dam height,
density metrics,
flow metrics,
rainbow trout,
rainbow trout adult length model,
rainbow trout recruitment model,
reservoir depth,
reservoir maximum capacity,
reservoir metrics,
reservoir storage,
river,
temperature data, Fewer tags
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These data were used to examine the effectiveness of a non-lethal tool (Bioelectrical Impedance Analysis, "BIA") to estimate the physiological condition of endangered and threatened fishes in the Colorado River Basin. We conducted laboratory trials using hatchery-raised Humpback Chub and Bonytail and wild-captured Roundtail Chub, where fish were subjected to different feeding trials to elucidate a response in physiological condition and different temperature treatments to approximate field conditions. At the end of each 6-week trial fish were removed from tanks, lateral and dorsal measurements of BIA were taken, and fish were sacrificed for proximate composition analysis (lipid, protein, water, ash, dry mass, energy...
Types: Citation;
Tags: Arizona,
Bioelectrical Impedance Analysis,
Bonytail,
Colorado River Basin,
Dorsal measurements, All tags...
Fish condition,
Flagstaff,
Humpback Chub,
Laboratory trials,
Lateral measurements,
Mortality rates,
Proximate composition analysis,
Roundtail Chub,
Temperature correction equations,
Threatened and endangered species,
USGS Science Data Catalog (SDC), Fewer tags
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These data were compiled for a manuscript that examines the riverine food-web structure of the Colorado River below Glen Canyon dam to its confluence with Lake Mead. Tissue from primary producers (vascular plants and algae) and consumers (aquatic invertebrates and fish) were collected before and after monsoon floods in 2006 along the 388 kilometer segment of the Colorado River in the Southwest US. Tissue samples were dried, ground, and analyzed for δ13C, δ15N, and δ2H stable isotope signatures and percent carbon and nitrogen. Analysis of these data focused on determining the proportion of terrestrial (allochthonous) vs. aquatic (autochthonous) organic matter sources at the base of the food web, trophic diversity...
Types: Citation;
Tags: Arizona,
Coconino County,
Colorado River,
Glen Canyon Dam,
Little Colorado River, All tags...
USGS Science Data Catalog (SDC),
allochthonous inputs,
deuterium,
food chain length,
food web,
pulse flow,
serial discontinuity,
stable isotope,
trophic diversity,
trophic structure, Fewer tags
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