James J Roberts

Multimetric Index macroinvertebrate values from the Fountain Creek Basin, Colorado 2005 to 2016

These data have been collected as part of a cooperative project in between the U.S. Geological Survey, Colorado Springs Utilities, and Colorado Springs City Engineering. This project began in 2005 and has collected macroinvertebrate samples from Fountain Creek and its tributaries to monitor the biological condition of this watershed. Provided in this data release are Multimetric Index (MMI) values of aquatic macroinvertebrate assemblages using four different sampling methods. There are two subsets of these data included: (1) MMI values of macroinvertebrate data collected from 2010 to 2012 at 15 sites as part of an invertebrate sample method comparison Scientific Investigations Report (SIR) titled “Comparability...

Categories: Data; Tags: Aquatic invertebrates, Biological Monitoring, Great Plains, Rocky Mountain Transition Zone, USGS Science Data Catalog (SDC), All tags... Urban Streams, biota, Fewer tags

Fish tissue mercury and selenium concentrations in Upper Colorado River Basin: 1962-2011

These data were compiled to study mercury and selenium concentrations in fish species and assemblages in lotic waterbodies across the Upper Colorado River Basin. Data were compiled from State and Federal agencies. This data table contains raw concentration data, as well as standardized concentrations corrected for differences based on sample type (i.e., tissue type), species-specific bioaccumulation rates (Table S1), and fish size (Table S2). The data were used in linear mixed effects models to estimate average mercury and selenium concentration in fish species and in fish assemblages, including fish total length (cm), sampling location (Sub basin name and GPS coordinates), and sampling year (Figures 2,3, and 4...

Categories: Data; Tags: Arizona, Colorado, Colorado Headwaters, Colorado River, Dirty Devil River, All tags... Dolores River, Great Divide-Upper Green River, Green River, Gunnison, Gunnison River, Lower Green, New Mexico, San Juan, San Juan River, USGS Science Data Catalog (SDC), Upper Colorado River Basin, Upper Colorado-Dirty Devil, Upper Colorado-Dolores, Utah, White River, White-Yampa, Yampa River, bioaccumulation, biota, endangered species, environment, fish, fish samples, fish tissue, fishes, mercury, mercury, mercury contamination, selenium, selenium, selenium concentration, Fewer tags

Detection data of acoustic telemetry tags from Walleye and Grass Carp in the Sandusky River and Bay, OH (2014-2021)

This data set includes acoustic telemetry detection data and biological attributes for walleye and grass carp in the Sandusky River and Bay, OH. The detection data also includes information about the receivers that recorded the detection of acoustic telemetry tags implanted in walleye and grass carp from from 2014 to 2021. Receiver attributes include location and deployment history of each receiver. Detections indicate where and when an individual fish implanted with a unique acoustic telemetry tag was recorded by a receiver. The attributes for each individual fish implanted with a tag and detected by a receiver include biological characteristics, tag details, and post-tagging release location.

Categories: Data; Tags: Aquatic Biology, Ecology, Great Lakes, Lake Erie, USGS Science Data Catalog (SDC), All tags... biota, fisheries, grass carp, invasive species, migration (organisms), telemetry, walleye, Fewer tags

Hydroacoustic data from uncrewed surface vehicle (USV) overtakes in Lakes Huron and Michigan, 2021

These data were derived from hydroacoustic data collected by uncrewed surface vehicles (USVs) and powered research vessels. The powered vessels overtook the USVs in Lakes Huron and Michigan to study fish avoidance of survey vessels during traditional acoustic surveys. The water column was divided into three depth groups (epilimnion, metalimnion, hypolimnion) for analysis. Each drone transect was binned into 30-sec intervals and measured hydroacoustic values were averaged in this region. To compare vessels and drones, parallel overtakes (overtakes where vessel and drone followed the same path) which were ~2 km long, were measured by both platforms and the differences between acoustic measures compared.

Categories: Data; Tags: Aquatic Biology, Great Lakes, Lake Huron, Lake Michigan, USGS Science Data Catalog (SDC), All tags... acoustics, biota, fishery management, multibeam sonar, transect sampling, Fewer tags

Cutthroat trout (CT; Oncorhynchus clarki ssp.) are extremely imperiled owing to a variety of stressors. Changing climate is adding to these stressors that have already relegated CT in the Southern Rocky Mountains to less than 35% of their native habitat. The Rio Grande CT (O. c. virginalis) occupies 12% of its native range and is currently under review for ESA listing as federally threatened. Changing thermal regimes, hydroclimate, and disturbance regimes will continue to alter the remaining habitat of Rio Grande CT. An understanding the status and trends of Rio Grande CT thermal habitats and the vulnerability of these habitats to climate driven changes in temperature and stochastic disturbance regimes would enable...

Categories: Map, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Colorado, GIS, New Mexico, Rio Grande cutthroat trout, SRLCC, All tags... climate chage, cutthroat trout, disturbance, fish, habitat, native fish, native trout, refugia, upper rio grande basin, vulnerability, water temperature, Fewer tags