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Page 318, results 7926 - 7950

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Not all publications have extents, not all extents are completely accurate
Ontogenetic changes in swimming speed of silver carp, bighead carp, and grass carp larvae: implications for larval dispersal
Amy E. George, Tatiana Garcia, Benjamin H. Stahlschmidt, Duane Chapman
2018, PeerJ (6)
Bighead, silver, and grass carps are invasive in the waterways of central North America, and grass carp reproduction in tributaries of the Great Lakes has now been documented. Questions about recruitment potential motivate a need for accurate models of egg and larval dispersal. Quantitative data on swimming behaviors and capabilities...
Accounting for surveyor effort in large-scale monitoring programs
Kevin Aagaard, James E. Lyons, Wayne E. Thogmartin
2018, Journal of Fish and Wildlife Management (9) 459-466
Accounting for errors in wildlife surveys is necessary for reliable status assessments and quantification of uncertainty in estimates of population size. We apply a hierarchical log-linear Poisson regression model that accounts for multiple sources of variability in count data collected for the Integrated Waterbird Management and Monitoring Program during 2010–2014....
Estimating the potential costs of brine production to expand the pressure-limited CO2 storage capacity of the Mount Simon Sandstone
Steven T. Anderson, Hossein Jahediesfanjani
Peter D. Warwick, editor(s)
2018, Conference Paper, U.S. Association for Energy Economics and International Association for Energy Economics North American Conference
The conventional wisdom is that widespread deployment of carbon capture and storage (CCS) is likely necessary to be able to satisfy baseload electricity demand, to maintain diversity in the energy mix, and to achieve mitigation of carbon dioxide (CO2) emissions at lowest cost (IPCC, 2014). If national-scale deployment of CCS...
Remote sensing vegetation index methods to evaluate changes in greenness and evapotranspiration in riparian vegetation in response to the Minute 319 environmental pulse flow to Mexico
Pamela L. Nagler, Christopher J. Jarchow, Edward P. Glenn
2018, Proceedings of the International Association of Hydrological Sciences (380) 45-54
During the spring of 2014, 130 million m3 of water were released from the United States' Morelos Dam on the lower Colorado River to Mexico, allowing water to reach the Gulf of California for the first time in 13 years. Our study assessed the effects of water transfer or ecological environmental flows from...
Biodiversity of amphibians and reptiles at the Camp Cady Wildlife Area, Mojave Desert, California and comparisons with other desert locations
Kristy L. Cummings, Shellie R. Puffer, Jenny B. Holmen, Jason K. Wallace, Jeffrey E. Lovich, Kathie Meyer-Wilkins, Chris Petersen, Robert E. Lovich
2018, California Fish and Game (104) 129-147
We examined the biodiversity of amphibian and reptile species living in and near constructed ponds in the riparian area at the Camp Cady Wildlife Area (CCWA) in the Mojave Desert of San Bernardino County, California, based on field work from 1998-1999, 2016-2017, review of the literature, and searches for museum...
Executive summary. In Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report
Richard Birdsey, Melanie A. Mayes, Patricia Romero-Lankao, Raymond G. Najjar, Sasha C. Reed, Nancy Cavallaro, Gyami Shrestha, Daniel J. Hayes, Laura Lorenzoni, Anne Marsh, Kathy Tedesco, Tom Wirth, Zhiliang Zhu
Nancy Cavallaro, Gyami Shrestha, Richard Birdsey, Melanie A. Mayes, Raymond G. Najjar, Sasha C. Reed, Patricia Romero-Lankao, Zhiliang Zhu, editor(s)
2018, Report, Second State of the Carbon Cycle Report (SOCCR2): A Sustained Assessment Report
Central to life on Earth, carbon is essential to the molecular makeup of all living things and plays a key role in regulating global climate. To understand carbon’s role in these processes, researchers measure and evaluate carbon stocks and fluxes. A stock is the quantity of carbon contained in a...
Hydrogeochemical controls on brook trout spawning habitats in a coastal stream
Martin A. Briggs, Judson W. Harvey, Stephen T. Hurley, Donald O. Rosenberry, Timothy D. McCobb, Dale D. Werkema, John W. Lane Jr.
2018, Hydrology and Earth System Sciences (22) 6383-6398
Brook trout (Salvelinus fontinalis) spawn in fall and overwintering egg development can benefit from stable, relatively warm temperatures in groundwater-seepage zones. However, eggs are also sensitive to dissolved oxygen concentration, which may be reduced in discharging groundwater (i.e., seepage). We investigated a 2 km reach of the coastal Quashnet River in...
Quantifying post-wildfire hillslope erosion with lidar
Francis K. Rengers, Luke McGuire
2018, Conference Paper
Following a wildfire, flooding and debris- flow hazards are common and pose a threat to human life and infrastructure in steep burned terrain. Wildfire enhances both water runoff and soil erosion, which ultimately shape the debris flow potential. The erosional processes that route excess sediment from hillslopes to debris-flow...
Strategic and critical metals in produced geothermal fluids from Nevada and Utah
Stuart F. Simmons, Stephe H. Kirby, Philip L. Verplanck, Karen Duttweiler Kelley
2018, Conference Paper, Proceedings 43rd Stanford Geothermal Workshop
Herein we summarize the results of an investigation dealing with the concentrations and inventories of strategic, critical and valuable materials (SCVM) in produced fluids from geothermal and hydrocarbon reservoirs (50-250° C) in Nevada and Utah. Water samples were collected from thirty-four production wells across eight geothermal fields, the Uinta Basin...
California gull (Larus californicus) space use and timing of movements in relation to landfills and breeding colonies
Joshua T. Ackerman, Sarah H. Peterson, Danika C Tsao, John Y. Takekawa
2018, Waterbirds (41) 384-400
Expanding gull (Laridae) populations throughout the world have been attributed to the availability of anthropogenic food subsidies. The influence of landfills on California Gull (Larus californicus) space use and the timing of their movements was evaluated in San Francisco Bay, California, USA. Using radio telemetry, 108 California Gulls were tracked,...
Contaminants of emerging concern in the environment: Where we have been and what does the future hold?
William A. Battaglin, Dana W. Kolpin, Edward T. Furlong, Susan Glassmeyer, Brett R. Blackwell, Steven Corsi, Michael T. Meyer, Paul M. Bradley
2018, Water Resources Impact (20) 8-11
In 1962, Rachel Carson’s book Silent Spring alerted the nation to the dangers of manmade chemicals and indiscriminate use of pesticides. DDT was the culprit and its use threatened a variety of wildlife, including the national bird, bald eagles. In 1969, pressured by scientists and the public, the United States...
Predicting biological conditions for small headwater streams in the Chesapeake Bay watershed
Kelly O. Maloney, Zachary M. Smith, Claire Buchanan, Andrea Nagel, John A. Young
2018, Freshwater Science (4) 795-809
A primary goal for Chesapeake Bay watershed restoration is to improve stream health and function in 10% of stream miles by 2025. Predictive spatial modeling of stream conditions, when accurate, is one method to fill gaps in monitoring coverage and estimate baseline conditions for restoration goals. Predictive modeling can also...
Comparing growth and body condition of indoor-reared, outdoor-reared, and direct-released juvenile Mojave desert tortoises
J. A. Daly, K. A. Buhlman, B. D. Todd, Clinton T. Moore, J. M. Peaden, T. D. Tuberville
2018, Herpetological Conservation and Biology (13) 622-633
Desert tortoise populations have declined, and head-starting hatchlings in captivity until they are larger and older — and presumably more likely to survive — is one strategy being evaluated for species recovery. Previous studies have reared hatchlings in outdoor, predator-proof pens for 5–9 years before release, in efforts to produce...
Estimating metal concentrations with regression analysis and water-quality surrogates at nine sites on the Animas and San Juan Rivers, Colorado, New Mexico, and Utah
M. Alisa Mast
2018, Scientific Investigations Report 2018-5116
The purpose of this report is to evaluate the use of site-specific regression models to estimate metal concentrations at nine U.S. Geological Survey streamflow-gaging stations on the Animas and San Juan Rivers in Colorado, New Mexico, and Utah. Downstream users could use these regression models to determine if metal concentrations...
Sewage loading and microbial risk in urban waters of the Great Lakes
Sandra L. McLellan, Elizabeth P. Sauer, Steven R. Corsi, Melinda J. Bootsma, Alexandria B. Boehm, Susan K. Spencer, Mark A. Borchardt
2018, Elementa: Science of the Anthropocene (6) 1-15
Despite modern sewer system infrastructure, the release of sewage from deteriorating pipes and sewer overflows is a major water pollution problem in US cities, particularly in coastal watersheds that are highly developed with large human populations. We quantified fecal pollution sources and loads entering Lake Michigan from a large watershed...
A video surveillance system to monitor breeding colonies of common terns (Sterna Hirundo)
J.L. Wall, Paul Marban, D.F. Brinker, J.D. Sullivan, M. Zimnik, J.L. Murrow, P. C. McGowan, Carl R. Callahan, Diann J. Prosser
2018, Journal of Visualized Experiments (137)
Many waterbird populations have faced declines over the last century, including the common tern (Sterna hirundo), a waterbird species with a widespread breeding distribution, that has been recently listed as endangered in some habitats of its range. Waterbird monitoring programs exist to track populations through time; however, some of the...
GSFLOW-GRASS v1.0.0: GIS-enabled hydrologic modeling of coupled groundwater–surface-water systems
G.-H. Crystal Ng, Andrew D. Wickert, Lauren D. Somers, Leila Saberi, Collin Cronkite-Ratcliff, Richard G. Niswonger, Jeffrey M. McKenzie
2018, Geoscientific Model Development (11) 4755-4777
The importance of water moving between the atmosphere and aquifers has led to efforts to develop and maintain coupled models of surface water and groundwater. However, developing inputs to these models is usually time-consuming and requires extensive knowledge of software engineering, often prohibiting their use by many researchers and water...
Propagation of endangered moapa dace
Jack E. Ruggirello, Scott A. Bonar, Olin G. Feuerbacher, Lee H. Simons, Chelsea Powers
2018, Copeia (106) 652-662
We report successful captive spawning and rearing of the highly endangered Moapa Dace, Moapa coriacea (approximately 650 individual fish in existence at time of this study). We simulated conditions under which this stream-dwelling southern Nevada cyprinid and similar species spawned and reared in the wild by varying temperature, photoperiod, flow, and substrate...
Land subsidence along the California Aqueduct in west-central San Joaquin Valley, California, 2003–10
Michelle Sneed, Justin T. Brandt, Michael Solt
2018, Scientific Investigations Report 2018-5144
Extensive groundwater withdrawal from the unconsolidated deposits in the San Joaquin Valley caused widespread aquifer-system compaction and resultant land subsidence from 1926 to 1970—locally exceeding 8.5 meters. The importation of surface water beginning in the early 1950s through the Delta-Mendota Canal and in the early 1970s through the California Aqueduct...
Groundwater-storage change and land-surface elevation change in Tucson Basin and Avra Valley, south-central Arizona--2003-2016
Robert L. Carruth, Libby M. Wildermuth, Brian D. Conway
2018, Scientific Investigations Report 2018-5154
The U.S. Geological Survey monitors groundwater-storage change and land-surface elevation change caused by groundwater withdrawal in Tucson Basin and Avra Valley—the two most populated alluvial basins within the Tucson Active Management Area. The Tucson Active Management Area is one of five active management areas in Arizona established by the 1980...
U.S. Geological Survey (USGS) water-use websites
Kimberly Shaffer, Kathleen M. Rowland, B. Pierre Sargent
2018, Fact Sheet 2018-3044
Explore U.S. Geological Survey (USGS) water-use websites to learn how and where the Nation's water use has changed over time!  Learn how to find and access USGS water-use data shown in maps, graphs, visualizations, and information products. Gain a better understanding of water-use terms and USGS educational resources. Learn how to find and...
Simulation of groundwater flow and analysis of projected water use for the Rush Springs aquifer, western Oklahoma
J.H. Ellis
2018, Scientific Investigations Report 2018-5136
The U.S. Geological Survey, in cooperation with the Bureau of Reclamation and the Oklahoma Water Resources Board, (1) quantified the groundwater resources of the Rush Springs aquifer in western Oklahoma by developing a numerical groundwater-flow model, (2) evaluated the effects of estimated equal-proportionate-share (EPS) pumping rates on aquifer storage and...