Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

165609 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 1090, results 27226 - 27250

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Methods for estimating peak-flow frequencies at ungaged sites in Montana based on data through water year 2011: Chapter F in Montana StreamStats
Roy Sando, Steven K. Sando, Peter McCarthy, DeAnn M. Dutton
2016, Scientific Investigations Report 2015-5019-F
The U.S. Geological Survey (USGS), in cooperation with the Montana Department of Natural Resources and Conservation, completed a study to update methods for estimating peak-flow frequencies at ungaged sites in Montana based on peak-flow data at streamflow-gaging stations through water year 2011. The methods allow estimation of peak-flow frequencies (that...
Methods for estimating streamflow characteristics at ungaged sites in western Montana based on data through water year 2009: Chapter G in Montana StreamStats
Peter McCarthy, Roy Sando, Steven K. Sando, DeAnn M. Dutton
2016, Scientific Investigations Report 2015-5019-G
The U.S. Geological Survey, in cooperation with the Montana Department of Environmental Quality and the Montana Department of Natural Resources and Conservation, developed regional regression equations based on basin and streamflow characteristics for streamflow-gaging stations through water year 2009 that can be used to estimate streamflow characteristics for ungaged sites...
Temporal trends and stationarity in annual peak flow and peak-flow timing for selected long-term streamflow-gaging stations in or near Montana through water year 2011: Chapter B in Montana StreamStats
Steven K. Sando, Peter McCarthy, Roy Sando, DeAnn M. Dutton
2016, Scientific Investigations Report 2015-5019-B
A large-scale study by the U.S. Geological Survey, in cooperation with the Montana Department of Transportation and the Montana Department of Natural Resources and Conservation, was done to investigate general patterns in peak-flow temporal trends and stationarity through water year 2011 for 24 long-term streamflow-gaging stations (hereinafter referred to as...
Montana StreamStats—A method for retrieving basin and streamflow characteristics in Montana: Chapter A in Montana StreamStats
Peter McCarthy, DeAnn M. Dutton, Steven K. Sando, Roy Sando
2016, Scientific Investigations Report 2015-5019-A
The U.S. Geological Survey (USGS) provides streamflow characteristics and other related information needed by water-resource managers to protect people and property from floods, plan and manage water-resource activities, and protect water quality. Streamflow characteristics provided by the USGS, such as peak-flow and low-flow frequencies for streamflow-gaging stations, are frequently used...
Montana StreamStats
2016, Scientific Investigations Report 2015-5019
About this volumeMontana StreamStats is a Web-based geographic information system (http://water.usgs.gov/osw/streamstats/) application that provides users with access to basin and streamflow characteristics for gaged and ungaged streams in Montana. Montana StreamStats was developed by the U.S. Geological Survey (USGS) in cooperation with the Montana Departments of Transportation, Environmental...
Developing recreational harvest regulations for an unexploited lake trout population
Melissa A Lenker, Brian Weidel, Olaf P. Jensen, Christopher T. Solomon
2016, North American Journal of Fisheries Management (36) 385-397
Developing fishing regulations for previously unexploited populations presents numerous challenges, many of which stem from a scarcity of baseline information about abundance, population productivity, and expected angling pressure. We used simulation models to test the effect of six management strategies (catch and release; trophy, minimum, and maximum length limits; and...
Research needs to better understand Lake Ontario ecosystem function: A workshop summary
Thomas J. Stewart, Lars G. Rudstam, James M. Watkins, Timothy B. Johnson, Brian Weidel, Marten A. Koops
2016, Journal of Great Lakes Research (42) 1-5
Lake Ontario investigators discussed and interpreted published and unpublished information during two workshops to assess our current understanding of Lake Ontario ecosystem function and to identify research needs to guide future research and monitoring activities. The purpose of this commentary is to summarize key investigative themes and hypotheses that emerged...
Hydrogeology and groundwater quality at monitoring wells installed for the Tunnel and Reservoir Plan System and nearby water-supply wells, Cook County, Illinois, 1995–2013
Robert T. Kay
2016, Scientific Investigations Report 2015-5186
Groundwater-quality data collected from 1995 through 2013 from 106 monitoring wells open to the base of the Silurian aquifer surrounding the Tunnel and Reservoir Plan (TARP) System in Cook County, Illinois, were analyzed by the U.S. Geological Survey, in cooperation with the Metropolitan Water Reclamation District of Greater Chicago, to...
An overview of current applications, challenges, and future trends in distributed process-based models in hydrology
Simone Fatichi, Enrique R. Vivoni, Fred L Odgen, Valeriy Y Ivanov, Benjamin B. Mirus, David Gochis, Charles W Downer, Matteo Camporese, Jason H Davison, Brian A. Ebel, Norm Jones, Jon Kim, Giuseppe Mascaro, Richard G. Niswonger, Pedro Restrepo, Riccardo Rigon, Chaopeng Shen, Mauro Sulis, David Tarboton
2016, Journal of Hydrology (537) 45-60
Process-based hydrological models have a long history dating back to the 1960s. Criticized by some as over-parameterized, overly complex, and difficult to use, a more nuanced view is that these tools are necessary in many situations and, in a certain class of problems, they are the most appropriate type of...
Relation of initial spacing and relative stand density indices to stand characteristics in a Douglas-fir plantation spacing trial
Robert O. Curtis, Sheel Bansal, Constance A. Harrington
2016, Research Paper PNW-RP-607
This report presents updated information on a 1981 Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) plantation spacing trial at 33 years from planting. Stand statistics at the most recent measurement were compared for initial spacing of 1 through 6 meters and associated relative densities. There was no clear relationship...
Tidal hydrodynamics under future sea level rise and coastal morphology in the Northern Gulf of Mexico
Davina Passeri, Scott C. Hagen, Nathaniel G. Plant, Matthew V. Bilskie, Stephen C. Medeiros, Karim Alizad
2016, Earth's Future (4) 159-176
This study examines the integrated influence of sea level rise (SLR) and future morphology on tidal hydrodynamics along the Northern Gulf of Mexico (NGOM) coast including seven embayments and three ecologically and economically significant estuaries. A large-domain hydrodynamic model was used to simulate astronomic tides for present and future conditions...
Enriched groundwater seeps in two Vermont headwater catchments are hotspots of nitrate turnover
Amninder J. Kaur, Donald S. Ross, James B. Shanley, Anna R. Yatzor
2016, Wetlands (36) 237-249
Groundwater seeps in upland catchments are often enriched relative to stream waters, higher in pH, Ca2+ and sometimes NO3¯. These seeps could be a NO3¯ sink because of increased denitrification potential but may also be ‘hotspots’ for nitrification because of the relative enrichment. We compared seep soils with nearby well-drained...
Movement and survival of an amphibian in relation to sediment and culvert design
R.K Honeycutt, W.H. Lowe, Blake R. Hossack
2016, Journal of Wildlife Management (80) 761-770
Habitat disturbance from stream culverts can affect aquatic organisms by increasing sedimentation or forming barriers to movement. Land managers are replacing many culverts to reduce these negative effects, primarily for stream fishes. However, these management actions are likely to have broad implications for many organisms, including amphibians in small streams....
Evaluating potential artefacts of photo-reversal on behavioral studies with nocturnal invasive sea lamprey (Petromyzon marinus)
Matthew Barnett, Istvan Imre, C. Michael Wagner, Richard T. Di Rocco, Nicholas S. Johnson, Grant E. Brown
2016, Canadian Journal of Zoology (94) 405-410
Sea lampreys (Petromyzon marinus L., 1758) are nocturnal, so experiments evaluating their behaviour to chemosensory cues have typically been conducted at night. However, given the brief timeframe each year that adult P. marinus are available for experimentation, we investigated whether P. marinus exposed to a 12 h shifted diurnal cycle (reversed photoperiod) could be tested...
Managing nutrients, water, and energy for producing more food with low pollution (MoFoLoPo); What would success look like?
Jill Baron
2016, Environmental Development (18) 52-53
Synthetic nitrogen (N) fertilizer has enabled modern agriculture to greatly improve human nutrition during the 20th century, but it has also created unintended human health and environmental pollution challenges for the 21st century. Averaged globally, about half of the fertilizer N applied to farms is removed with the crops, while...
Multi-laboratory survey of qPCR enterococci analysis method performance in U.S. coastal and inland surface waters
Richard A. Haugland, Shawn Siefring, Manju Varma, Kevin H. Oshima, Mano Sivaganesan, Yiping Cao, Meredith Raith, John Griffith, Stephen B. Weisberg, Rachel T. Noble, A. Denene Blackwood, Julie Kinzelman, Tamara Anan’eva, Rebecca N. Bushon, Erin A. Stelzer, Valarie J. Harwood, Katrina V. Gordon, Christopher Sinigalliano
2016, Journal of Microbiological Methods (123) 114-125
Quantitative polymerase chain reaction (qPCR) has become a frequently used technique for quantifying enterococci in recreational surface waters, but there are several methodological options. Here we evaluated how three method permutations, type of mastermix, sample extract dilution and use of controls in results calculation, affect method reliability among multiple laboratories...
Informing Lake Erie agriculture nutrient management via scenario evaluation
Donald Scavia, Margaret Kalcic, Rebecca Logsdon Muenich, Noel Aloysius, Jeffrey Arnold, Chelsie Boles, Remegio Confesor, Joseph DePinto, Marie Gildow, Jay Martin, Jennifer Read, Todd Redder, Dale M. Robertson, Scott P. Sowa, Yu-Chen Wang, Michael White, Haw Yen
2016, Report
Harmful algal blooms (HABs) have been increasing in extent and intensity in the western basin of Lake Erie. The cyanobacteria Microcystis produces toxins that pose serious threats to animal and human health, resulting in beach closures and impaired water supplies, and have even forced a “do not drink” advisory for...
Avian malaria in a boreal resident species: long-term temporal variability, and increased prevalence in birds with avian keratin disorder
Laura C. Wilkinson, Colleen M. Handel, Caroline R. Van Hemert, Claire Loiseau, Ravinder N. M. Sehgal
2016, International Journal for Parasitology (16) 281-290
The prevalence of vector-borne parasitic diseases is widely influenced by biological and ecological factors. Environmental conditions such as temperature and precipitation can have a marked effect on haemosporidian parasites (Plasmodium spp.) that cause malaria and those that cause other malaria-like diseases in birds. However, there have been few long-term studies monitoring...
Population size and stopover duration estimation using mark–resight data and Bayesian analysis of a superpopulation model
James E. Lyons, William L. Kendall, J. Andrew Royle, Sarah J. Converse, Brad A. Andres, Joseph B. Buchanan
2016, Biometrics (72) 262-271
We present a novel formulation of a mark–recapture–resight model that allows estimation of population size, stopover duration, and arrival and departure schedules at migration areas. Estimation is based on encounter histories of uniquely marked individuals and relative counts of marked and unmarked animals. We use a Bayesian analysis of a...
The Chief Joseph Hatchery Program 2013 Annual Report
Casey Baldwin, Andrea Pearl, Matthew Laramie, John Rohrback, Pat Phillips, Keith Wolf
2016, Report
The Chief Joseph Hatchery is the fourth hatchery obligated under the Grand Coulee Dam/Dry Falls project, originating in the 1940s. Leavenworth, Entiat, and Winthrop National Fish Hatcheries were built and operated as mitigation for salmon blockage at Grand Coulee Dam, but the fourth hatchery was not built, and the obligation...
Growth, survival, longevity, and population size of the Big Mouth Cave salamander (Gyrinophilus palleucus necturoides) from the type locality in Grundy County, Tennessee, USA
Matthew L. Niemiller, Brad M. Glorioso, Dante B. Fenolio, R. Graham Reynolds, Steven J. Taylor, Brian T. Miller
2016, Copeia (104) 35-41
Salamander species that live entirely in subterranean habitats have evolved adaptations that allow them to cope with perpetual darkness and limited energy resources. We conducted a 26-month mark–recapture study to better understand the individual growth and demography of a population of the Big Mouth Cave Salamander (Gyrinophilus palleucus necturoides). We...
Seismic site characterization of an urban dedimentary basin, Livermore Valley, California: Site tesponse, basin-edge-induced surface waves, and 3D simulations
Stephen H. Hartzell, Alena L. Leeds, Leonardo Ramirez-Guzman, James P. Allen, Robert G. Schmitt
2016, Bulletin of the Seismological Society of America (103) 609-631
Thirty‐two accelerometers were deployed in the Livermore Valley, California, for approximately one year to study sedimentary basin effects. Many local and near‐regional earthquakes were recorded, including the 24 August 2014 Mw 6.0 Napa, California, earthquake. The resulting ground‐motion data set is used to quantify the seismic response of the Livermore basin, a...
Low soil moisture during hot periods drives apparent negative temperature sensitivity of soil respiration in a dryland ecosystem: A multi-model comparison
Colin Tucker, Sasha C. Reed
2016, Biogeochemistry (128) 155-169
Arid and semiarid ecosystems (drylands) may dominate the trajectory of biosphere-to-atmosphere carbon (C) exchange, and understanding dryland CO2 efflux is important for C cycling at the global-scale. However, unknowns remain regarding how temperature and moisture interact to regulate dryland soil respiration (R s ), while ‘islands of fertility’ in drylands create spatially heterogeneous R s ....
Does urban sprawl hold down upward mobility?
R. Ewing, Shima Hamidi, James B. Grace, Y. Wei
2016, Landscape and Urban Planning (148) 80-88
Contrary to the general perception, the United States has a much more class-bound society than other wealthy countries. The chance of upward mobility for Americans is just half that of the citizens of the Denmark and many other European countries. In addition to other influences, the built environment may contribute...