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Publication Extents

Not all publications have extents, not all extents are completely accurate
Detecting drawdowns masked by environmental stresses with water-level models
C.A. Garcia, K. J. Halford, J.M. Fenelon
2013, Ground Water (51) 322-332
Detecting and quantifying small drawdown at observation wells distant from the pumping well greatly expands the characterized aquifer volume. However, this detection is often obscured by water level fluctuations such as barometric and tidal effects. A reliable analytical approach for distinguishing drawdown from nonpumping water-level fluctuations is presented and tested...
Hydrogeology and water quality of the Dublin and Midville aquifer systems at Waynesboro, Burke County, Georgia, 2011
Gerard Gonthier
2013, Scientific Investigations Report 2013-5026
The hydrogeology and water quality of the Dublin and Midville aquifer systems were characterized in the City of Waynesboro area in Burke County, Georgia, based on geophysical and drillers’ logs, flowmeter surveys, a 24-houraquifer test, and the collection and chemical analysis of water samples in a newly constructed well. At...
Does seeding after wildfires in rangelands reduce erosion or invasive species?
David A. Pyke, Troy A. Wirth, Jan L. Beyers
2013, Restoration Ecology (21) 415-421
Mitigation of ecological damage caused by rangeland wildfires has historically been an issue restricted to the western United States. It has focused on conservation of ecosystem function through reducing soil erosion and spread of invasive plants. Effectiveness of mitigation treatments has been debated recently. We reviewed recent literature to conduct...
The identity of the enigmatic "Black Shrew" (Sorex niger Ord, 1815)
Neal Woodman
2013, Proceedings of the Biological Society of Washington (126) 1-10
The scientific name Sorex niger Ord, 1815 (Mammalia, Soricidae) was originally applied to a North American species that George Ord called the “Black Shrew.” The origin of the name “Black Shrew,” however, was obscure, and Samuel Rhoads subsequently wrote that the species represented by this name could not be determined....
Geographic range and structure of cryptic genetic diversity among Pacific North American populations of the non-native amphipod Grandidierella japonica
Erik M. Pilgrim, Michael J. Blum, Deborah A. Reusser, Henry Lee II, John A. Darling
2013, Biological Invasions (15) 2415-2428
Reconstructing the invasion history of aquatic invasive species can enhance understanding of invasion risks by recognizing areas most susceptible to invasion and forecasting future spread based on past patterns of population expansion. Here we reconstruct the invasion history of the Japanese amphipod Grandidierella japonica Stephensen 1938 combining information from historical...
Iron mineralogy and bioaccessibility of dust generated from soils as determined by reflectance spectroscopy and magnetic and chemical properties--Nellis Dunes recreational area, Nevada
Harland L. Goldstein, Richard L. Reynolds, Suzette A. Morman, Bruce Moskowitz, Raymond F. Kokaly, Dirk Goossens, Brenda J. Buck, Cody Flagg, Jessica Till, Kimberly Yauk, Thelma S. Berquo
2013, Scientific Investigations Report 2013-5054
Atmospheric mineral dust exerts many important effects on the Earth system, such as atmospheric temperatures, marine productivity, and melting of snow and ice. Mineral dust also can have detrimental effects on human health through respiration of very small particles and the leaching of metals in various organs. These effects can...
Sediment accretion and organic carbon burial relative to sea-level rise and storm events in two mangrove forests in Everglades National Park
Joseph M. Smoak, Joshua L. Breithaupt, Thomas J. Smith III, Christian J. Sanders
2013, Catena (104) 58-66
The goal of this investigation was to examine how sediment accretion and organic carbon (OC) burial rates in mangrove forests respond to climate change. Specifically, will the accretion rates keep pace with sea-level rise, and what is the source and fate of OC in the system? Mass accumulation, accretion and...
Including independent estimates and uncertainty to quantify total abundance of fish migrating in a large river system: walleye (Sander vitreus) in the Maumee River, Ohio
Jeremy J. Pritt, Mark R. DuFour, Christine M. Mayer, Patrick M. Kocovsky, Jeffrey T. Tyson, Eric J. Weimer, Christopher S. Vandergoot
2013, Canadian Journal of Fisheries and Aquatic Sciences (70) 803-814
Walleye (Sander vitreus) in Lake Erie is a valuable and migratory species that spawns in tributaries. We used hydroacoustic sampling, gill net sampling, and Bayesian state-space modeling to estimate the spawning stock abundance, characterize size and sex structure, and explore environmental factors cuing migration of walleye in the Maumee River...
Perfluorinated compound concentrations in great blue heron eggs near St. Paul, Minnesota, USA, in 1993 and 2010-2011
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, Qian Wu, Kurunthachalam Kannan, Annette Trowbridge
2013, Environmental Toxicology and Chemistry (32) 1077-1083
A great blue heron (Ardea herodias) colony on Pig's Eye Island on the Mississippi River near St. Paul, Minnesota, USA, is located near several potential perfluorinated compound (PFC) sources. The PFC concentrations in great blue heron eggs reported from a 1993 collection from the Pig's Eye colony were among the...
Late Holocene history of Chaitén Volcano: new evidence for a 17th century eruption
Luis E. Lara, Rodrigo Moreno, Álvaro Amigo, Richard P. Hoblitt, Thomas C. Pierson
2013, Andean Geology (40) 249-261
Prior to May 2008, it was thought that the last eruption of Chaitén Volcano occurred more than 5,000 years ago, a rather long quiescent period for a volcano in such an active arc segment. However, increasingly more Holocene eruptions are being identified. This article presents both geological and historical evidence...
Great Lakes rivermouths: a primer for managers
Victoria Pebbles, James Larson, Paul Seelbach
Victoria Pebbles, James Larson, Paul Seelbach, editor(s)
2013, Report
Between the North American Great Lakes and their tributaries are the places where the confluence of river and lake waters creates a distinct ecosystem: the rivermouth ecosystem. Human development has often centered around these rivermouths, in part, because they provide a rich array of ecosystem services. Not surprisingly, centuries of...
Martian fluvial conglomerates at Gale Crater
Rebecca M.E. Williams, J.P. Grotzinger, W. E. Dietrich, S. Gupta, D.Y. Sumner, R. C. Wiens, N. Mangold, M. C. Malin, K.S. Edgett, S. Maurice, O. Forni, O. Gasnault, A. Ollila, Horton E. Newsom, G. Dromart, M.C. Palucis, R.A. Yingst, Ryan B. Anderson, Kenneth E. Herkenhoff, S. Le Mouélic, W. Goetz, M.B. Madsen, A. Koefoed, J.K. Jensen, J.C. Bridges, S.P. Schwenzer, K.W. Lewis, K.M. Stack, D. Rubin, L.C. Kah, J.F. Bell III, J.D. Farmer, R. Sullivan, T. Van Beek, D.L. Blaney, O. Pariser, R.G. Deen
2013, Science (340) 1068-1072
Observations by the Mars Science Laboratory Mast Camera (Mastcam) in Gale crater reveal isolated outcrops of cemented pebbles (2 to 40 millimeters in diameter) and sand grains with textures typical of fluvial sedimentary conglomerates. Rounded pebbles in the conglomerates indicate substantial fluvial abrasion. ChemCam emission spectra at one outcrop show...
The SCEC geodetic transient detection validation exercise
Rowena B. Lohman, Jessica R. Murray
2013, Seismological Research Letters (84) 419-425
Over the past decade the number and size of continuously operating Global Positioning System (GPS) networks has grown substantially worldwide. A steadily increasing volume of freely available GPS measurements, combined with the application of new approaches for mining these data for signals of interest, has led to the identification of...
Eco-evolutionary responses of Bromus tectorum to climate change: implications for biological invasions
Tamara J. Zelikova, Ruth A. Hufbauer, Sasha C. Reed, Timothy M. Wertin, Christa Fettig, Jayne Belnap
2013, Ecology and Evolution (3) 1374-1387
How plant populations, communities, and ecosystems respond to climate change is a critical focus in ecology today. The responses of introduced species may be especially rapid. Current models that incorporate temperature and precipitation suggest that future Bromus tectorum invasion risk is low for the Colorado Plateau. With a field warming...
S-wave triggering of tremor beneath the Parkfield, California, section of the San Andreas fault by the 2011 Tohoku, Japan earthquake: observations and theory
David P. Hill, Zhigang Peng, David R. Shelly, Chastity Aiken
2013, Bulletin of the Seismological Society of America (103) 1541-1550
The dynamic stresses that are associated with the energetic seismic waves generated by the Mw 9.0 Tohoku earthquake off the northeast coast of Japan triggered bursts of tectonic tremor beneath the Parkfield section of the San Andreas fault (SAF) at an epicentral distance of ∼8200 km. The onset of tremor begins...
Zinc isotope fractionation during magmatic differentiation and the isotopic composition of the bulk Earth
Heng Chen, Paul S. Savage, Fang-Zehn Teng, Rosalind T. Helz, Frederic Moynier
2013, Earth and Planetary Science Letters (369-370) 34-42
he zinc stable isotope system has been successfully applied to many and varied fields in geochemistry, but to date it is still not completely clear how this isotope system is affected by igneous processes. In order to evaluate the potential application of Zn isotopes as a proxy for planetary differentiation...
Development of web-based organic petrology photomicrograph atlases and internet resources for professionals and students
Brett J. Valentine, Eric A. Morrissey, Andy J. Park, Mark E. Reidy, Paul C. Hackley
2013, International Journal of Coal Geology (111) 106-111
With advances in web applications, organic petrography and other related disciplines are in need of updated online resources and educational tools to aid professionals and students in the identification and interpretation of macerals. The U.S. Geological Survey (USGS) Organic Petrology Laboratory along with USGS Eastern Energy Resources Science Center Information Technology staff have developed five web atlases containing images of...
Modern foraminifera, δ13C, and bulk geochemistry of central Oregon tidal marshes and their application in paleoseismology
Simon E. Engelhart, Benajamin P. Horton, Christopher H. Vane, Alan R. Nelson, Robert C. Witter, Sarah R. Brody, Andrea D. Hawkes
2013, Palaeogeography, Palaeoclimatology, Palaeoecology (377) 13-27
We assessed the utility of δ13C and bulk geochemistry (total organic content and C:N) to reconstruct relative sea-level changes on the Cascadia subduction zone through comparison with an established sea-level indicator (benthic foraminifera). Four modern transects collected from three tidal environments at Siletz Bay, Oregon, USA, produced three elevation-dependent groups...
Mapping landscape phenology preference of yellow-billed cuckoo with AVHRR data
Cynthia S.A. Wallace, Miguel L. Villarreal, Charles van Riper III
2013, Conference Paper, Merging science and management in a rapidly changing world: Biodiversity and management of the Madrean Archipelago III and 7th Conference on Research and Resource Management in the Southwestern Deserts; 2012 May 1-5; Tucson, AZ
We mapped habitat for threatened Yellow-billed Cuckoo (Coccycus americanus occidentalis) in the State of Arizona using the temporal greenness dynamics of the landscape, or the landscape phenology. Landscape phenometrics were derived from Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) data for 1998 and 1999 by using...
Assessing factors affecting the thermal properties of a passive thermal refuge using three-dimensional hydrodynamic flow and transport modeling
Jeremy D. Decker, Eric D. Swain, Bradley Stith, Catherine A. Langtimm
2013, Journal of Waterway, Port, Coastal, Ocean Engineering (139) 209-220
Everglades restoration activities may cause changes to temperature and salinity stratification at the Port of the Islands (POI) marina, which could affect its suitability as a cold weather refuge for manatees. To better understand how the Picayune Strand Restoration Project (PSRP) may alter this important resource in Collier County in...
Vascular plant and vertebrate species richness in national parks of the eastern United States
Jeffrey S. Hatfield, Kaci E. Myrick, Michael A. Huston, Floyd W. Weckerly, M. Clay Green
2013, Natural Resource Technical Report NPS/NCR/NCRO/NRTR 2013/002
Given the estimates that species diversity is diminishing at 50-100 times the normal rate, it is critical that we be able to evaluate changes in species richness in order to make informed decisions for conserving species diversity. In this study, we examined the potential of vascular plant species richness...