Analyses of infrequent (quasi-decadal) large groundwater recharge events in the northern Great Basin: Their importance for groundwater availability, use, and management
Melissa D. Masbruch, Christine Rumsey, Subhrendu Gangopadhyay, David D. Susong, Tom Pruitt
2016, Water Resources Research (52) 7819-7836
There has been a considerable amount of research linking climatic variability to hydrologic responses in the western United States. Although much effort has been spent to assess and predict changes in surface water resources, little has been done to understand how climatic events and changes affect groundwater resources. This study...
Phenology of the adult angel lichen moth (Cisthene angelus) in Grand Canyon, USA
Anya N. Metcalfe, Theodore A. Kennedy, Jeffrey D. Muehlbauer
2016, Southwestern Naturalist (61) 233-240
We investigated the phenology of adult angel lichen moths (Cisthene angelus) along a 364-km long segment of the Colorado River in Grand Canyon, Arizona, USA, using a unique data set of 2,437 light-trap samples collected by citizen scientists. We found that adults of C. angelus were bivoltine from 2012 to...
King Rail (Rallus elegans) Nesting and Brood Rearing Ecology at Red Slough WMA, SE Oklahoma
David G. Krementz, Karen L. Willard, M. Carroll, Katie M. Dugger
2016, Waterbirds (39) 241-249
Organizing environmental flow frameworks to meet hydropower mitigation needs
Ryan A. McManamay, Shannon K. Brewer, Henriette Jager, Matthew J. Troia
2016, Environmental Management (58) 365-385
The global recognition of the importance of natural flow regimes to sustain the ecological integrity of river systems has led to increased societal pressure on the hydropower industry to change plant operations to improve downstream aquatic ecosystems. However, a complete reinstatement of natural flow regimes is often unrealistic when balancing...
Regional meteorological drivers and long term trends of winter-spring nitrate dynamics across watersheds in northeastern North America
Jill Crossman, M Catherine Eimers, Nora J. Casson, Douglas A. Burns, John L. Campbell, Gene E Likens, Myron J Mitchell, Sarah J. Nelson, James B. Shanley, Shaun A. Watmough, Kara L Webster
2016, Biogeochemistry (130) 247-265
This study evaluated the contribution of winter rain-on-snow (ROS) events to annual and seasonal nitrate (N-NO3) export and identified the regional meteorological drivers of inter-annual variability in ROS N-NO3 export (ROS-N) at 9 headwater streams located across Ontario, Canada and the northeastern United States. Although on average only 3.3 %...
Migratory bird habitat in relation to tile drainage and poorly drained hydrologic soil groups
Brandi Kastner, Victoria G. Christensen, Tanja N. Williamson, Christopher A. Sanocki
2016, Conference Paper, 10th International Drainage Symposium Conference
The Prairie Pothole Region (PPR) is home to more than 50% of the migratory waterfowl in North America. Although the PPR provides an abundance of temporary and permanent wetlands for nesting and feeding, increases in commodity prices and agricultural drainage practices have led to a trend of wetland drainage. The...
Effects of land use and sample location on nitrate-stream flow hysteresis descriptors during storm events
Lawrence S. Feinson, Jacob Gibs, Thomas E. Imbrigiotta, Jessica D. Garrett
2016, Journal of the American Water Resources Association (52) 1493-1508
The U.S. Geological Survey's New Jersey and Iowa Water Science Centers deployed ultraviolet-visible spectrophotometric sensors at water-quality monitoring sites on the Passaic and Pompton Rivers at Two Bridges, New Jersey, on Toms River at Toms River, New Jersey, and on the North Raccoon River near Jefferson, Iowa to continuously measure...
Development of novel microsatellite markers for the Northern Goshawk (Accipiter gentilis) and their utility in cross-species amplification
Christy Haughey, George K. Sage, Gabriel Degange, Sarah A. Sonsthagen, Sandra L. Talbot
2016, Avian Biology Research (9) 195-199
The Northern Goshawk (Accipiter gentilis) is a large forest raptor with a Holarctic distribution and, in some portions of its range, a species of conservation concern. To augment previously reported genetic markers, 13 novel polymorphic microsatellite markers were developed to establish individual identification and familial relationships, to assess levels of...
A suspended dive-net technique for catching territorial divers
Brian D. Uher-Koch, Daniel Rizzolo, Kenneth G. Wright, Joel A. Schmutz
2016, Ringing and Migration (31) 19-22
A variety of methods such as night-lighting and lift nets have been used to catch divers (Gavidae), although 24-hour daylight in the Arctic summer and the remote nature of field sites can make the use of these traditional methods impossible. Our research required capture of adult divers at remote locations...
Seismic imaging of the metamorphism of young sediment into new crystalline crust in the actively rifting Imperial Valley, California
Liang Han, John Hole, Joann Stock, Gary S. Fuis, Colin F. Williams, Jonathan Delph, Kathy Davenport, Amanda Livers
2016, Geochemistry, Geophysics, Geosystems (17) 4566-4584
Plate-boundary rifting between transform faults is opening the Imperial Valley of southern California and the rift is rapidly filling with sediment from the Colorado River. Three 65–90 km long seismic refraction profiles across and along the valley, acquired as part of the 2011 Salton Seismic Imaging Project, were analyzed to...
Do rivermouths alter nutrient and seston delivery to the nearshore?
James H. Larson, Paul C. Frost, Jon M. Vallazza, John C. Nelson, William B. Richardson
2016, Freshwater Biology (61) 1935-1949
Tributary inputs to lakes and seas are often measured at riverine gages, upstream of lentic influence. Between these riverine gages and the nearshore zones of large waterbodies lie rivermouths, which may retain, transform and contribute materials to the nearshore zone. However, the magnitude and timing of these...
Biodynamics of copper oxide nanoparticles and copper ions in an oligochaete - Part II: Subcellular distribution following sediment exposure
Amalie Thit, Tina Ramskov, Marie Noele Croteau, Henriette Selck
2016, Aquatic Toxicology (180) 25-35
The use and likely incidental release of metal nanoparticles (NPs) is steadily increasing. Despite the increasing amount of published literature on metal NP toxicity in the aquatic environment, very little is known about the biological fate of NPs after sediment exposures. Here, we compare the bioavailability and subcellular distribution of...
Static and dynamic controls on fire activity at moderate spatial and temporal scales in the Alaskan boreal forest
Kirsten Barrett, Tatiana Loboda, A. David McGuire, Hélène Genet, Elizabeth Hoy, Eric Kasischke
2016, Ecosphere (7) 1-21
Wildfire, a dominant disturbance in boreal forests, is highly variable in occurrence and behavior at multiple spatiotemporal scales. New data sets provide more detailed spatial and temporal observations of active fires and the post-burn environment in Alaska. In this study, we employ some of these new data to analyze variations...
Volcano dome dynamics at Mount St. Helens: Deformation and intermittent subsidence monitored by seismicity and camera imagery pixel offsets
Jacqueline T. Salzer, Weston A. Thelen, Mike R. James, Thomas R. Walter, Seth C. Moran, Roger P. Denlinger
2016, Journal of Geophysical Research B: Solid Earth (121) 7882-7902
The surface deformation field measured at volcanic domes provides insights into the effects of magmatic processes, gravity- and gas-driven processes, and the development and distribution of internal dome structures. Here we study short-term dome deformation associated with earthquakes at Mount St. Helens, recorded by a permanent optical camera and seismic...
Landsat 8: The plans, the reality, and the legacy
Thomas R. Loveland, James R. Irons
2016, Remote Sensing of Environment (185) 1-6
Landsat 8, originally known as the Landsat Data Continuity Mission (LDCM), is a National Aeronautics and Space Administration (NASA)-U.S. Geological Survey (USGS) partnership that continues the legacy of continuous moderate resolution observations started in 1972. The conception of LDCM to the reality of Landsat 8 followed an arduous path extending...
Evaluation of fisher (Pekania pennanti) restoration in Olympic National Park and the Olympic Recovery Area: 2015 final annual progress report
Patricia J. Happe, Kurt J. Jenkins, Thomas J. Kay, Kristie Pilgrim, Michael K. Schwartz, Jeffrey C. Lewis, Keith B. Aubry
2016, Natural Resource Report NPS/OLYM/NRR—2016/1274
With the translocation and release of 90 fishers (Pekania pennanti) from British Columbia to Olympic National Park during 2008–2010, the National Park Service (NPS) and Washington Department of Fish and Wildlife (WDFW) accomplished the first phase of fisher restoration in Washington State. Beginning in 2013, we initiated a new research...
Responses of a 58-story RC dual core shear wall and outrigger frame building inferred from two earthquakes
Mehmet Çelebi
2016, Earthquake Spectra (32) 2449-2471
Responses of a dual core shear-wall and outrigger-framed 58-story building recorded during the Mw6.0 Napa earthquake of 24 August 2014 and the Mw3.8 Berkeley earthquake of 20 October 2011 are used to identify its dynamic characteristics and behavior. Fundamental frequencies are 0.28 Hz (NS), 0.25 Hz (EW), and 0.43 Hz...
Effectiveness of vegetation buffers surrounding playa wetlands at contaminant and sediment amelioration
David A. Haukos, Lacrecia A. Johnson, Loren M. Smith, Scott T. McMurry
2016, Journal of Environmental Management (181) 552-562
Playa wetlands, the dominant hydrological feature of the semi-arid U.S. High Plains providing critical ecosystem services, are being lost and degraded due to anthropogenic alterations of the short-grass prairie landscape. The primary process contributing to the loss of playas is filling of the wetland through accumulation of soil eroded and...
Response of imperiled Okaloosa darters to stream restoration
David B. Reeves, William B. Tate, Howard L. Jelks, Frank Jordan
2016, North American Journal of Fisheries Management (36) 1375-1385
The Okaloosa Darter Etheostoma okaloosae is a small percid endemic to six stream drainages in northwestern Florida. The U.S. Fish and Wildlife Service listed Okaloosa Darters as endangered in 1973 and downlisted them to threatened in 2011 because of habitat improvements and increasing abundance across much of their geographic range....
Calibrated acoustic emission system records M -3.5 to M -8 events generated on a saw-cut granite sample
Gregory C. McLaskey, David A. Lockner
2016, Rock Mechanics and Rock Engineering (49) 4527-4536
Acoustic emission (AE) analyses have been used for decades for rock mechanics testing, but because AE systems are not typically calibrated, the absolute sizes of dynamic microcrack growth and other physical processes responsible for the generation of AEs are poorly constrained. We describe a calibration technique for the AE recording...
Holocene volcanism of the upper McKenzie River catchment, central Oregon Cascades, USA
Natalia I. Deligne, Richard M. Conrey, Katharine V. Cashman, Duane E. Champion, William H. Amidon
2016, Geological Society of America Bulletin (128) 1618-1635
To assess the complexity of eruptive activity within mafic volcanic fields, we present a detailed geologic investigation of Holocene volcanism in the upper McKenzie River catchment in the central Oregon Cascades, United States. We focus on the Sand Mountain volcanic field, which covers 76 km2 and consists of 23 vents,...
Review of footnotes and annotations to the 1949–2013 tables of standard atomic weights and tables of isotopic compositions of the elements (IUPAC Technical Report)
Tyler B. Coplen, Norman E. Holden
2016, Pure and Applied Chemistry (88) 689-699
The Commission on Isotopic Abundances and Atomic Weights uses annotations given in footnotes that are an integral part of the Tables of Standard Atomic Weights to alert users to the possibilities of quite extraordinary occurrences, as well as sources with abnormal atomic-weight values outside an otherwise acceptable range. The basic...
Estimation of time-variable fast flow path chemical concentrations for application in tracer-based hydrograph separation analyses
Scott C. Kronholm, Paul D. Capel
2016, Water Resources Research (52) 6881-6896
Mixing models are a commonly used method for hydrograph separation, but can be hindered by the subjective choice of the end-member tracer concentrations. This work tests a new variant of mixing model that uses high-frequency measures of two tracers and streamflow to separate total streamflow into water from slowflow and...
Three whole-wood isotopic reference materials, USGS54, USGS55, and USGS56, for δ2H, δ13C, δ15N, and δ18O measurements
Haiping Qi, Tyler B. Coplen, James A. Jordan
2016, Chemical Geology (442) 47-53
Comparative measurements of stable hydrogen and oxygen isotopes in wood are hampered by the lack of proper reference materials (RMs). The U.S. Geological Survey (USGS) has prepared three powdered, whole-wood RMs, USGS54 (Pinus contorta, Canadian lodgepole pine), USGS55 (Cordia cf. dodecandra, Mexican ziricote), and USGS56 (Berchemia cf. zeyheri, South...
Climate-change signals in national atmospheric deposition program precipitation data
Gregory A. Wetherbee, M. Alisa Mast
2016, Climate Dynamics (47) 3141-3155
National Atmospheric Deposition Program (NADP)/National Trends Network precipitation type, snow-season duration, and annual timing of selected chemical wet-deposition maxima vary with latitude and longitude within a 35-year (1979–2013) data record for the contiguous United States and Alaska. From the NADP data collected within the region bounded by 35.6645°–48.782° north latitude...
