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The influence of water temperature on salmonid recruitment and adult size in tailwaters across western North America—Data 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 Population dynamics of humpback chub, rainbow trout and brown trout in the Colorado River in its Grand Canyon Reach: modelling code and input data These data were compiled to fit an integrated population model of brown trout in the Glen Canyon Reach of the Colorado River and test different hypotheses regarding the driver of brown trout population dynamics. Also, data were compiled as inputs for a model to simulate population dynamics and species interactions among brown trout, rainbow trout and humpback chub in the Colorado River between Glen Canyon Dam and the confluence of the Colorado River and the Little Colorado River. Tags: Aquatic Biology, Arizona, Colorado River, Ecology, Geography, All tags... Glen Canyon Dam, Glen Canyon Reach, Grand Canyon, Information Sciences, Lees Ferry, Little Colorado River, Southwestern United States, USGS Science Data Catalog (SDC), United States, brown trout, catch data, catch per unit effort, catch-only data, decision support, fish populations, humpback chub, integrated population model, juvenile size class, large adult size class, mark-recapture data, population dynamics, rainbow trout, simulation, size classes, small adult size class, species interactions, Fewer tags Juvenile Salmonid Densities in Orwell Brook and Trout Brook, New York 2014-2023 Individual point estimates of stream density by juvenile salmonid species in two small tributaries to the Salmon River, Lake Ontario, New York were recorded. Enumeration of salmonid species was observed using a backpack electrofisher in order to identify fish species. Stream density estimates were calculated using stream width measurements taken at equally spaced transects. Comparisons of species densities between the two streams were analyzed to infer competition or segregation. Categories: Data; Tags: Aquatic Biology, Atlantic Salmon, Brook Trout, Brown Trout, Chinook Salmon, All tags... Coho Salmon, Ecology, Lake Ontario, New York, Oncorhynchus kisutch, Oncorhynchus mykiss, Oncorhynchus tshaytscha, Orwell Brook, Oswego County, Rainbow Trout, Salmo salar, Salmo trutta, Salvelinus fontinalis, Trout Brook, USGS Science Data Catalog (SDC), biota, community ecology, Fewer tags Rainbow trout growth data and growth covariate data from Glen Canyon, Colorado River, Arizona, 2012-2021 These data are the primary data used to model rainbow trout growth in Glen Canyon. Fish growth data were collected from nighttime boat electrofishing field campaigns conducted five to six times per year in April, July, September, and January, from April 2012 through November 2021 for a total of 9798 observations of mark-recapture-based growth. Sampling was conducted in a five km reach in the lower portion of the Glen Canyon tailwater (3.7-8.9 km upstream of Lees Ferry, AZ). Two nights of sampling occurred on each trip, with the central 2-3 km of the reach sampled on both nights. After capture, fish were kept in aerated 40-L buckets and transported to a central processing location. Groups of 10-15 fish were anesthetized... Categories: Data; Tags: Aquatic Biology, Arizona, Colorado River, Ecology, Geography, All tags... Glen Canyon, Glen Canyon Dam, Glen Canyon National Recreation Area, Information Sciences, Lees Ferry, USGS Science Data Catalog (SDC), Upper Colorado River, Water Resources, Wildlife Biology, animal tracking, biomass, biota, controlled flooding, data release, droughts, electrofishing, experimental flow, field inventory and monitoring, field sampling, fish, fish growth, fish weight, fork length, hydropeaking, inlandWaters, mark-recapture, phosphorus, rainbow trout, river reaches, streamflow, tailwater, water quality, water temperature, Fewer tags Rainbow trout diet and invertebrate drift data from 2012-2015 for the Colorado River, Grand Canyon, Arizona 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 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 Fish abundance, environmental DNA, and stream habitat data from Washington, and southern British Columbia, Canada Field estimates of the abundance of rainbow trout in Washington and British Columbia were collected in concert with environmental DNA samples (eDNA) to evaluate if eDNA copy numbers correlated with abundance of trout. In addition, stream habitat data including channel units (pools, riffles), substrate, large woody debris, among others, were collected at sites. Categories: Data; Tags: British Columbia, Washington, biota, environmental DNA, environmental DNA, All tags... habitat, rainbow trout, trout, Fewer tags Environmental DNA data, fish abundance data, and stream habitat data from northwest Montana and northeast Washington and southern British Columbia, Canada Field estimates of the abundance of two trout species (bull trout and westslope cutthroat trout) in Montana and rainbow trout in Washington and British Columbia were collected in concert with environmental DNA samples (eDNA) to evaluate if eDNA copy numbers correlated with abundance of trout. In addition, stream habitat data including channel units (pools, riffles), substrate, large woody debris, among others, were collected at sites. Tags: Missoula, USGS Science Data Catalog (SDC), aquatic biology, biota, bull trout, All tags... environmental DNA, habitat, rainbow trout, westslope cutthroat trout, Fewer tags Biological and chemical data from attenuated and pulsed exposures of fire chemical to fish Survival endpoints for juvenile rainbow trout (Oncorhynchus mykiss) and fathead minnows (Pimephales promelas) in response to exposure to wildland firefighting chemicals. Exposures were either attenuated or pulsed. For attenuated exposures, chemical treatment was applied at the beginning of the exposure and control water was added for the duration of the assay so chemical concentration gradually decreased over time. In pulsed exposures, organisms were exposed to chemical treatments for a set period of time and then moved to chambers without chemical applied. This data set includes data from seven assays and include treatments under various exposure conditions such as different background water hardness, chemical... Tags: Aquatic Biology, Columbia Environmental Research Center, Environmental Health, USGS Science Data Catalog (SDC), ammonia, All tags... aquatic biology, biota, ecotoxicology, fathead minnow, fire chemical, fire retardants, fish, rainbow trout, wildfires, Fewer tags Effects of rotenone on nesting Ospreys (Pandion haliaetus) at Hyatt and Howard Prairie Reservoirs, OR, 1988-1992 To assess the effects of rotenone (fish toxicant) treatment and possible fish removal effects on nesting Osprey (Pandion haliaetus) populations, nests were observed at two reservoirs east of Ashland, Oregon. Hyatt Reservoir was treated with rotenone on October 12, 1989. Howard Prairie was observed as an untreated reference area. Nests at both reservoirs were observed two years pre-treatment (1988, 1989) and two years post-treatment (1990, 1992). The dataset contains Osprey reproductive parameters, foraging parameters, prey delivery rates and bald eagle piracy rates at eight intensively observed nests. Fish stocking records and creel data were obtained from the Oregon Department of Fish & Wildlife for both reservoirs... Categories: Data; Tags: Ameiurus nebulosus, Ecology, Environmental Health, Haliaeetus leucocephalus, Howard Prairie Reservoir, All tags... Hyatt Reservoir, Jackson, Micropterus salmoides, Oncorhynchus mykiss, Oregon, Pandion haliaetus, USGS Science Data Catalog (SDC), Water Quality, Wildlife Biology, bald eagle, biota, birds, brood reduction, brown bullhead, fish, largemouth bass, nesting population, osprey, prey delivery rates, prey loss, rainbow trout, reproduction, rotenone, spring steelhead, wildlife biology, winter steelhead, Fewer tags Habitat Preferences of Slimy Sculpin and Rainbow Trout in Grout Brook, New York, 2016 In association with a project to estimate stream habitat use by two fish species; habitat parameters where slimy sculpin and rainbow trout were captured were recorded. Habitat use was observed using a backpack electrofisher in order to determine where fish were residing. Total stream habitat was calculated using equally spaced transects with observational recording of stream water depth, stream velocity, vegetative cover, and stream bed substrate composition. Comparisons of habitat use between the two species were analyzed using several statistical programs to infer competition or segregation. Categories: Data; Tags: Aquatic Biology, Cottus cognatus, Ecology, Grout Brook, New York, All tags... Oncorhynchus mykiss, Rainbow Trout, Slimy Sculpin, USGS Science Data Catalog (SDC), biota, community ecology, Fewer tags Humpback Chub and Rainbow Trout Joint Mark-Recapture Data and Model, Colorado River, Arizona These data were compiled for a joint mark-recapture analysis of humpback chub and rainbow trout and include capture histories for both species, as well as environmental covariates associated with monthly time steps used to measure survival and growth and environmental covariates used to predict capture probability during each sampling trip. This worksheet also include parameter estimates and associated variance-covariance matrix from a prior analysis, which were combined with the output from the joint mark-recap analysis to predict equilibrium adult abundances under a variety of scenarios. Types: Citation; Tags: Arizona, Colorado River, Colorado River corrodor, Grand Canyon, Little Colorado River, All tags... USGS Science Data Catalog (SDC), capture histories, environmental covariates, humpback chub, introduced species, joint mark-recapture, joint mark-recapture data, modeling, native species, rainbow trout, Fewer tags Continuous Detection PIT Array Data & Model These data represent a set of capture histories of rainbow trout (Oncorhynchus mykiss or RBT) captured in the Colorado River (CR) and(or) detected on the multiplexer array in the Little Colorado River (LCR). Capture trips to the Colorado River occurred in April 2012, July 2012, September 2012, January 2013, April 2013, July 2013, September 2013, January 2014, April 2014, July 2014, and September 2014. Rainbow trout were detected on the PIT array system (MUX) from October 2013 - April 2014. Types: Citation; Tags: Arizona, Colorado River, Glen Canyon Dam, Grand Canyon, Little Colorado River, All tags... PIT arrays, Southwestern United States, USGS Science Data Catalog (SDC), abundance estimation, capture histories, mark-recapture, multiplexer array, non-native species detection, rainbow trout, Fewer tags Hatchery Trout Predation Data, Arizona These data were compiled to evaluate the potential adverse impacts that stocked trout may have on native fish populaitons through predation. Hatchery-reared rainbow and brown trout are typically fed exclusively on commercially prepared pelleted feeds and have no experience catching or consuming life fish at the time of stocking and yet stocked fish are percieved to present a high predation risk for juvenile native fishes. These data were compiled to allow for a relative comparison of predation effectiveness between hatchery-reared fish and wild fish. Mean numbers of prey fish surviving in replicated overnight laboratory predation trials were quantified. Tags: Aquatic Biology, Arizona, Arizona Game and Fish Department, Page Springs Fish Hatchery, Big Water, Canyon Creek, All tags... Cornville, Flagstaff, Information Sciences, Lees Ferry, Marble Canyon, Pine, USGS Science Data Catalog (SDC), United States Forest Service, Rocky Mountain Research Station, Utah, Wahweap State Fish Hatchery, Wildlife Biology, biota, brown trout, captive rearing, fish, fish populations, fishery management, hatchery reared fish, hatchery-reared brown trout, hatchery-reared rainbow trout, laboratory data, laboratory experiments, native fish, native fish populations, native species, negative effects, predation, predation effectiveness, predation trials, predators, prey fish, rainbow trout, southwestern United States, stocked brown trout, stocked rainbow trout, stocked trout, wild brown trout, wild fish, wild rainbow trout, wildlife biology, Fewer tags Bioeconomic model population data, Grand Canyon, Arizona These data were estimated for use in the bioecomomic model simulation of the rainbow trout population in the Colorado River in Marble Canyon. The initial rainbow trout abundance is a vector (RBT_intN) representing the population of rainbow trout within each river segment (151 mile long sergments) along the mainstem of the Colorado River from Lees Ferry to 151 river miles downstream. The movement matrix (MMat) is a distribution that estimates the probability that a rainbow trout wil move to any one of the 151 river segments downstream of Lees Ferry. Tags: Arizona, Colorado River, Geography, Glen Canyon, Grand Canyon, All tags... Information Sciences, Lees Ferry, Little Colorado River, Marble Canyon, Southwestern United States, USGS Science Data Catalog (SDC), United States, bioecomomic model simulation, biota, economy, environment, inland waters, movement matrix, population abundance, probability, rainbow trout, rainbow trout abundance, river segment, society, Fewer tags Data for impacts of introduced Alewife and White Perch on growth of Rainbow Trout in the Ashokan Reservoir, Catskill Mountains, New York This dataset contains the results from aging and back-calculation of length-at-age of scale samples from 502 Rainbow Trout captured in the Ashokan Reservoir between 1952 and 2017. The first six columns contain collection information including an assigned fish number, the year and period of capture, the basin of the Ashokan Reservoir from which a fish was captured, and the length and weight of the fish when it was captured. The final three columns present results from the aging and back-calculation procedures. Multiple rows of information often correspond to an individual fish and are designated by the "Fish number" column. Categories: Data; Tags: Alewife, Ashokan Reservoir, Catskill Mountains, Esopus Creek, Rainbow Trout, All tags... USGS Science Data Catalog (SDC), Ulster County, White Perch, aquatic biology, nonindigenous species, Fewer tags Rainbow trout reproduction data from 3 sampling trips (2018-2019) within Glen Canyon, AZ These data were compiled to describe population reproductive structure of rainbow trout in the Colorado River downstream of Glen Canyon Dam, Arizona. Objective(s) of our study were to describe the population on reproductive structure of the rainbow trout population in Glen Canyon on the Colorado River and evaluate the accuracy of nonlethal methods (manual expression and ultrasonography) for assigning sex and reproductive phase. These data represent samples collected in 3 sampling trips fall in October to November 2018, February 2019, and April 2019. These data were collected in Glen Canyon, from Glen Canyon Dam to Lees Ferry on the Colorado River. Specifically, we sampled three reaches within Glen Canyon to represent... Categories: Data; Tags: Aquatic Biology, Arizona, Colorado River, Ecology, Geography, All tags... Glen Canyon, Glen Canyon Dam, Information Sciences, Lees Ferry, USGS Science Data Catalog (SDC), biota, datasets, field experiments, field inventory and monitoring, field methods, field sampling, fish, gonad tissue, histological assignment, inlandWaters, laboratory methods, manual expression, nonlethal methods, population and community ecology, rainbow trout, recruitment, reproductive phase, river reaches, samples, sex phase, sexing (plants & animals), size classes, tabular data, tailwater, ultrasonography, Fewer tags