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Limnology data from Lake Powell, desert southwest USA (ver. 2.0, Sept. 2023) These data were compiled as part of a long-term (1964 - 2022) water quality monitoring program at Lake Powell. Objectives of our study were to release a consistent record of long-term water quality data. The 58-year limnology dataset captures some water quality parameters (temperature, salinity, major ions, total suspended solids) from reservoir filling to present day. It also contains a 38-year record of secchi depth, and a ~30-year record of nutrients, phytoplankton, and zooplankton assemblages. The data were collected from various sites within the Lake Powell reservoir and the Glen Canyon dam. Regular monthly sampling occurred at three sites near the dam and reservoir-wide sampling was generally conducted quarterly,... Categories: Data, Data Release - Revised; Tags: Arizona, Aztec Creek, Bridge Creek, Cathedral Canyon, Clear Creek, All tags... Colorado River, Dark Canyon, Davis Gulch, Dreissena bugensis, Escalante River, Face Canyon, Glen Canyon, Glen Canyon Dam, Glen Canyon National Recreation Area, Gunsight Canyon, Labyrinth Canyon, Lake Powell, Last Chance Canyon, Lees Ferry, Navajo Canyon, Rainbow Bridge, Red Canyon, Rock Creek Canyon, San Juan River, Sheep Canyon, USGS Science Data Catalog (SDC), Upper Colorado River Basin, Utah, Wahweap Bay, Warm Creek Bay, Warm Creek Bay Alternate, West Canyon, arid reservoir, chlorophyll a, data release, discrete sample, dissolved oxygen, field inventory and monitoring, field monitoring stations, inlandWaters, invasive bivalve, invasive species, laboratory methods, limnology, long-term ecological monitoring, long-term trends, major ions, nutrients, oxygen content (water), phytoplankton, plankton, profiles, reservoir, salinity, secchi depth, site visit, station location, total suspended solids, turbidity, water chemistry, water quality, water sampling, water temperature, zooplankton, Fewer tags Database of Marine Mammal and Seabird Research Activity in the Pacific (US) This database is a compilation of marine mammal and seabird information collected along the Pacific coast of the United States and U.S. territories in the Pacific from surveys that were solicited among regional research communities and persons. Information from standardized surveys was gathered from 2015 to 2018 and includes programs and researchers who collected information regarding seabirds since 1960. These data support the following publication: Adams, J., Lafferty, K.D., Kelsey, E.C., and Johnston, C.A. 2019. Synopsis of Research Programs that can Provide Baseline and Monitoring Information for Offshore Energy Activities in the Pacific Region: Seabird and Marine Mammal Surveys in the Pacific Region. U.S.... Categories: Data; Tags: Alaska, California, Ecology, Hawaii, Oregon, All tags... Pacific Islands, Research, USGS Science Data Catalog (SDC), Washington, Wildlife Biology, biodiversity, biological informatics, biota, birds, costal zones, field methods, geographical information systems (GIS), inlandWaters, laboratory methods, location, mammals, marine ecosystem, marine mammals, oceans, seabirds, Fewer tags Microsatellite genotypes for Lake Sturgeon (Acipenser fulvescens) Eggs and Larvae from Constructed Reefs in the St. Clair-Detroit River System (2015-2016) This dataset contains the physical collection information (e.g., sample location, date, gear type) and microsatellite DNA genotype of egg and larval Lake Sturgeon collected in the St. Clair and Detroit rivers in 2015 and 2016. Individuals were genotyped for 18 microsatellite loci (13 disomic and 5 polysomic). Alleles (base pair sizes) were recorded as presence absence scores (1:present, 2:absent, 0:missing data) for all previously observed alleles. Thus individual genotypes were recorded as pseudo diploid dominant phenotypes resulting in individual vectors of length n=205 for each genotyped egg or larval individual. Categories: Data; Tags: Acipenser, Acipenser fulvescens, Acipenseridae, Anthropogenic, Anthropogenic Rock, All tags... Anthropogenic Rock Reef Substrate, Anthropogenic Rock Rubble, Anthropogenic Substrate, Aquatic Biology, Aquatic Setting, Artificial reef, Assessments, Biological Occurrence, Data Content Subjects, Data Content Types, Detroit, Detroit River, Dredge Deposit, Dredge Disturbance, Dredged/Excavated Channel, Fishes, Fishing from Shore, Fishing with Benthic Mobile Gear, Genetics, Grassy Island, Great Lakes, Habitat, Harvesting Living Resources, Huron, Lacustrine, Lake Saint Clair, Lake St. Clair, Living Resources, Macomb, Michigan, Middle Channel Saint Clair River, Motorized Boating, North Channel Saint Clair River, Pelagic Fishing, Port Huron, Recreational Nonextractive /Cultural Use, Sailing, Saint Clair, Saint Clair River, Shipping, Shore Use, St. Clair, St. Clair-Detroit, Substrate, Transportation, USGS Science Data Catalog (SDC), United States, Wayne, Western Lake Erie, animals, anthropogenic agents of coastal change, aquatic ecosystems, biological features, biological laboratory methods, biological observations, biological resources, biology, biota, biota, canal, capturing (animals), channels, chordates, conservation, construction, cultural resources, data processing, datasets, discipline, dredge spoils disposal, dredging operations, ecological change, ecosystem monitoring, ecosystem restoration, ecosystems, endemic species, environment, environmental assessment, eukaryotes, feature type, field inventory and monitoring, field methods, field observation, field sampling, fish, fish eggs, fish larvae, fisheries, fishery resources, food resources, freshwater ecosystems, genetic diversity, genetics, genotype, habitats, hot topics, hydrographic features, ichthyology, ichthyoplankton, inland fishery resources, inlandWaters, laboratory methods, landform, life sciences, management methods, methods, native species, natural resources, nekton and plankton, organism groupings (non-taxonomic), organisms, physiographic features, population and community ecology, population dynamics, product types, ray-finned fish ["bony fish"], recreational fishery resources, reef, reefs, regions, research method, resource management, resources, river, river basin development, river systems, rivers, sciences, shipping channels, species conservation, streams, sturgeon, topics, transportation resources, trapping, vertebrates, water resources, wetland destruction, zoology, Fewer tags Microsatellite Loci for Mogollon Narrowheaded Gartersnake (Thamnophis rufipunctatus) and the Northern Mexican Gartersnake (Thamnophis eques megalops) in Arizona and New Mexico (2020-2021) The Mogollon Narrowheaded gartersnake (Thamnophis rufipunctatus) and the Northern Mexican gartersnake (Thamnophis eques megalops) are both listed as Threatened under the Federal Endangered Species Act. Both species have a strong association with aquatic habitats, and these habitats have been highly altered from impoundments, land-use changes, and the introduction and spread of non-native aquatic species, which have contributed to declines in Arizona and New Mexico over the last 30-40 years. We characterized 125 microsatellite loci per species to generate genetic toolsets for use in long term genetic monitoring of populations. We evaluated microsatellite loci for missing data and several variability thresholds, which... Categories: Data; Tags: Arizona, DNA sequencing, Genetics, New Mexico, USGS Science Data Catalog (SDC), All tags... biota, genetic diversity, laboratory methods, reptiles, Fewer tags Avian Eggshell Thickness for 12 Species in the Western U.S. from 2014 to 2018 Eggshell thickness was measured at the egg equator and poles (sharp pole and blunt pole) for 12 avian species. Eggshell thickness was related to egg morphometrics (egg length and width), embryonic development, egg status, and mercury contamination. Individual eggshells each have up to 3 thickness measurements, linked by the eggshell identification. Each measurement has the corresponding egg length, egg width, egg status, mercury concentration, and nest identification. Additionally, eggshell thickness was measured at 5 equally spaced positions along the longitude of the egg (sharp pole, quarter egg, half egg, three quarter egg, and blunt pole) in a subset of Forster's tern (Sterna forsteri) eggs. These data support... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Nevada, USGS Science Data Catalog (SDC), Washington, biota, All tags... birds, egg measurements, eggshell, laboratory methods, mercury contamination, Fewer tags Chemical and biological data from a study on method development for a short term 7 day sodium chloride and mock effluent toxicity tests with unionid mussels The data consists of the responses (survival, growth, and/or reproduction) of test organisms were determined in six concentrations of toxicants in 7-day toxicity tests or in four different feeding rates in 7-day feeding experiments. Specifically we evaluated the sensitivity of 2 mussel species (Villosa constricta and Lampsilis siliquoidea) and P. promelas and C. dubia using effluents in 7-d exposures. We then refined the method by determining the best feeding rate of algal mixture for 1-, 2-, and 3-wk-old L. siliquoidea in a 7-d feeding experiment, and using derived optimal feeding rates to assess the sensitivity of the 3 ages of juveniles in a 7-d NaCl test. Finally, we conducted an interlaboratory study among... Tags: Aquatic Biology, Columbia Environmental Research Center, Environmental Health, USGS Science Data Catalog (SDC), Water Quality, All tags... biota, contamination and pollution, dissolved metals, ecotoxicology, effluent toxicity, effluents, freshwater mussels, industrial effluents, interlaboratory variability, laboratory methods, methods development, sodium chloride, species sensitivity, test methods, water chemistry, water properties, water quality, water quality criteria, Fewer tags Soil surface properties and roughness data at two experimental restoration sites within the Southwestern USA This data release presents data used for analyzing spatial and temporal differences in soil surface roughness within selected biocrust communities. These records were collected by ground-based lidar for 121, 1m x 3m soil plots with biological soil crusts (biocrusts). Roughness was estimated from 5 mm resolution data (CloudCompare v. 2.10.2, 2019) for two Great Basin Desert sites (UTTR-1; UTTR-2) in December 2015 and one Chihuahuan Desert site (JER) in February 2016. Data were again collected in June 2018 for UTTR-1 and UTTR-2. Additional field and laboratory data were included within this study to understand differences in soil surface roughness between UTTR and JER as well as between the 2016 and 2018 surveys at... Categories: Data; Tags: 5 mm resolution, Chihuahuan Desert, Ecology, Geography, Geomorphology, All tags... Great Basin, Great Basin Desert, Hill Air Force Base, Information Sciences, Jornada Experimental Range, Las Cruces, New Mexico, Remote Sensing, Salt Lake City, Soil Sciences, USGS Science Data Catalog (SDC), Utah, biocrust, biological soil crusts, biological treatment, biota, data release, digital point cloud, ecosystem disturbance, experimental restoration treatments, field data, field experiments, field inventory and monitoring, field methods, geoscientificInformation, ground-based lidar, habitat alteration and disturbance, laboratory data, laboratory experiments, laboratory methods, lidar, plot sampling, remediation, soil morphology, soil plots, soil resources, soil surface roughness, southwestern United States, Fewer tags Aeolian mass flux data for the Colorado Plateau These data were compiled to measure airborne horizontal mass flux of sediments moved by wind across soils, climates, vegetation types, and land uses on the Colorado Plateau. Objectives of our study were to quantify spatial and temporal patterns in wind erosion and further our understanding of how soil and site setting, climate, and land uses are controlling wind erosion and horizontal mass flux. These data represent seasonal cumulative horizontal mass flux as measured using passive aspirated sediment traps, Big Spring Number Eight (BSNE) samplers. These data were collected in Grand and San Juan counties, Utah, and Mesa County, Colorado, USA between August 2017 and November 2020. These data were collected by the... Categories: Data; Tags: Bears Ears National Monument, Big Springs Number Eight samplers, Canyonlands National Park, Climatology, Colorado Plateau, All tags... Ecology, GPS measurement, Geography, Grand County, Information Sciences, Moab, San Juan County, Soil Sciences, Southwestern United States, USGS Science Data Catalog (SDC), Utah, atmospheric deposition (chemical & particulate), biogegraphy, data release, disturbance, droughts, drylands, dust, energy development, environment, field sampling, geolocation measurement, geoscientificInformation, grazing, habitat alteration and disturbance, horizontal mass flux, laboratory methods, land use and land cover, livestock, oil and gas, plot sampling, seasonal data, sediment processing, sediment transport, sedimentation, sediments, spatial analysis, spatial data, spatial patterns, temporal data, temporal patterns, unconsolidated deposits, utilitiesCommunication, wind erosion, 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