Comparison of site dominant frequency from earthquake and microseismic data in California
Behzad Hassani, Alan Yong, Gail M. Atkinson, Tian Feng, Lingseng Meng
2019, Bulletin of the Seismological Society of America (109) 1034-1040
An important predictive variable for site amplification is the site dominant frequency (ƒd). At seismic monitoring stations, ƒd can be calculated from the peak of the horizontal‐to‐vertical spectral ratios (HVSRs) obtained from earthquake recordings (eHVSR). For other sites, ƒd can be estimated from microseismic (mHVSR) observations....
Relationships between diatom metrics based on species nutrient traits and agricultural land use
Robert Pillsbury, R. Jan Stevenson, Mark D. Munn, Ian R. Waite
2019, Environmental Monitoring and Assessment (191)
We assessed how diatom metrics were related to different ranges of agricultural land use. Diatom assemblage composition, nutrients, and landscape characteristics were determined at 232 sites in eight agriculturally dominated study areas of the continental United States. Two regional groups based on differences in diatom relations to human disturbance were...
Integrated assessment of wastewater reuse, exposure risk, and fish endocrine disruption in the Shenandoah River watershed
Larry B. Barber, Jennifer L. Krstolic, Chintamani Kandel, Steffanie H. Keefe, Jacelyn Rice, Paul Westerhoff, David Bertolatus, Alan M. Vajda
2019, Environmental Science & Technology (53) 3429-3440
Reuse of municipal and industrial wastewater treatment plant (WWTP) effluent is an important component in augmenting global freshwater supplies. The Shenandoah River Watershed was selected to conduct on-site exposure experiments to assess endocrine disrupting characteristics of different source waters. This investigation of the Shenandoah River Watershed integrates WWTP wastewater reuse...
Dynamic flood modeling essential to assess the coastal impacts of climate change
Patrick L. Barnard, Li H. Erikson, Amy C. Foxgrover, Juliette A. Finzi Hart, Patrick W. Limber, Andrea C. O'Neill, Maarten van Ormondt, Sean Vitousek, Nathan J. Wood, Maya K. Hayden, Jeanne M. Jones
2019, Scientific Reports (9) 1-13
Coastal inundation due to sea level rise (SLR) is projected to displace hundreds of millions of people worldwide over the next century, creating significant economic, humanitarian, and national-security challenges. However, the majority of previous efforts to characterize potential coastal impacts of climate change have focused primarily on long-term SLR with...
Stability of temperate coral Astrangia poculata microbiome is reflected across different sequencing methodologies
Dawn B. Goldsmith, Zoe A. Pratte, Christina A. Kellogg, Sara E. Snader, Koty H. Sharp
2019, AIMS Microbiology (5) 62-76
The microbiome of the temperate coral Astrangia poculata was first described in 2017 using next-generation Illumina sequencing to examine the coral’s bacterial and archaeal associates across seasons and among hosts of differing symbiotic status. To assess the impact of methodology on the detectable diversity of the coral’s microbiome, we obtained near full-length...
The Missouri groundwater-level observation network
David C. Smith
2019, Fact Sheet 2019-3009
The Missouri groundwater-level observation well network is a series of wells across the State of Missouri in which groundwater levels are monitored in real time and periodically. The wells monitor the water levels in multiple key aquifers, such as the Ozark aquifer in the Salem and Springfield Plateaus and the...
Biogeochemical and physical processes controlling mercury methylation and bioaccumulation in Lake Powell, Glen Canyon National Recreation Area, Utah and Arizona, 2014 and 2015
David L. Naftz, Mark Marvin-DiPasquale, David P. Krabbenhoft, George Aiken, Eric S. Boyd, Christopher H. Conaway, Jacob M. Ogorek, Gregory M. Anderson
2019, Open-File Report 2018-1159
Mercury monitoring results from about 300 Morone saxatilis (striped bass) muscle tissue samples collected by the State of Utah from Lake Powell resulted in a Utah/Arizona fish consumption advisory issued in 2012 for approximately the lower 100 kilometers of the reservoir. Chemical, physical, and biological data were collected during two...
Do observer fatigue and taxon-bias compromise visual encounter surveys for small vertebrates?
Bjorn Lardner, Amy A. Yackel Adams, Adam J Knox, Julie A. Savidge, Robert Reed
2019, Wildlife Research (46) 127-135
Context. Visual encounter surveying is a standard animal inventory method, modifications of which (e.g. distance sampling and repeated count surveys) are used for modelling population density. However, a variety of factors may bias visual survey counts.Aims. The aim of the present study was to evaluate three observer-related biases: (1)...
Field-level characteristics influence wild bee functional guilds on public lands managed for conservation
A.R. Main, Elisabeth B. Webb, K. W. Goyne, D. Mengel
2019, Global Ecology and Conservation (17)
Throughout the Midwestern US, many public lands set aside for conservation engage in management activities (e.g., agriculture) that may act as stressors on wild bee populations. Several studies have investigated how wild bees respond to large-scale agriculture production; however, there has been limited assessment of how...
Imaging spectroscopy for the detection, assessment and monitoring of natural and anthropogenic hazards
Cindy Ong, Veronique Carrere, Sabine Chabrillat, Roger N. Clark, Todd M. Hoefen, Raymond F. Kokaly, Rodolphe Marion, Carlos Roberto de Souza Filho, Gregg A. Swayze, David R. Thompson
2019, Surveys in Geophysics (40) 431-470
Natural and anthropogenic hazards have the potential to impact all aspects of society including its economy and the environment. Diagnostic data to inform decision-making are critical for hazard management whether for emergency response, routine monitoring or assessments of potential risks. Imaging spectroscopy (IS) has unique contributions...
Black-tailed prairie dog, Cynomys ludovicianus (Sciuridae), metapopulation response to novel sourced conspecific signals
Anna D. Chalfoun, Lauren C. Connell, Lauren M. Porensky, John D. Scasta
2019, Animal Behaviour (150) 189-199
Aggregation of territorial individuals within a species can be facilitated via conspecific signals, wherein settlement implies habitat suitability, ease of resource acquisition and/or increased predator detection. The black-tailed prairie dog is a colonial small mammal with alarm vocalizations that...
Understanding organic matter heterogeneity and maturation rate by Raman spectroscopy
Seyedalireza Khatibi, Mehdi Ostadhassan, Paul C. Hackley, David Tuschel, Arash Abarghani, Bailey Bubach
2019, International Journal of Coal Geology (206) 46-64
Solid organic matter (OM) in sedimentary rocks produces petroleum and solid bitumen when it undergoes thermal maturation. The solid OM is a ‘geomacromolecule’, usually representing a mixture of various organisms with distinct biogenic origins, and can have high heterogeneity in composition. Programmed pyrolysis is a common method to reveal bulk geochemical characteristics of...
Manipulating wild and tamed phytobiomes: Challenges and opportunities
Terrence H. Bell, Kevin L. Hockett, Ricardo Ivan Alcala-Briseno, Mary Barbercheck, Gwyn A. Beattie, Mary Ann Bruns, John E. Carlson, Taejung Chung, Alyssa Collins, Bryan Emmett, Paul Esker, Karen Garrett, Leland Glenna, Beth K. Gugino, Maria del Mar Jimenez-Gasco, Linda Kinkel, Jasna Kovac, Kurt P. Kowalski, Gretchen Kuldau, Johan H. J. Leveau, Matthew J. Michalska-Smith, Jessica Myrick, Kari Peter, Maria Fernanda Vivanco Salazar, Ashley Shade, Nejc Stopnisek, Xiaoquing Tan, Amy T. Welty, Kyle Wickings, Etienne Yergeau
2019, Phytobiomes Journal (3) 3-21
This white paper presents a series of perspectives on current and future phytobiome management, discussed at the Wild and Tamed Phytobiomes Symposium in University Park, PA, USA, in June 2018. To enhance plant productivity and health, and to translate lab- and greenhouse-based phytobiome research to field applications, the academic community...
Detrital K-feldspar Pb isotopic evaluation of extraregional sediment transported through an Eocene tectonic breach of southern California's Cretaceous batholith
Danielle Ziva Shulaker, Marty Grove, Jeremy K. Hourigan, Nicholas Van Buer, Glenn R. Sharman, Keith A. Howard, Jonathan Miller, Andrew P. Barth
2019, Earth and Planetary Science Letters (508) 4-17
Sedimentary provenance studies have come to be overwhelmingly based upon U–Pb geochronologic measurements performed with detrital zircon while alternative and potentially complementary approaches such as conglomerate clast studies and heavy mineral analysis have faded in importance. Measurement of Pb isotopic compositions in detrital K-feldspar is among the under-utilized approaches available to ascertain sedimentary source regions. While it has...
Modeling elk‐to‐livestock transmission risk to predict hotspots of brucellosis spillover
Nathaniel D. Rayl, Kelly Proffitt, Emily S. Almberg, Jennifer D. Jones, Jerod Merkle, Justin A. Gude, Paul C. Cross
2019, Journal of Wildlife Management (83) 817-829
Wildlife reservoirs of infectious disease are a major source of human‐wildlife conflict because of the risk of potential spillover associated with commingling of wildlife and livestock. In the Greater Yellowstone Ecosystem, the presence of brucellosis (Brucella abortus) in free‐ranging elk (Cervus canadensis) populations is of significant management concern because of...
Climate, streamflow, and lake-level trends in the Great Lakes Basin of the United States and Canada, water years 1960–2015
Parker A. Norton, Daniel G. Driscoll, Janet M. Carter
2019, Scientific Investigations Report 2019-5003
Water levels in the Great Lakes fluctuate substantially because of complex interactions among inputs (precipitation and streamflow), outputs (evaporation and outflow), and other factors. This report by the U.S. Geological Survey in cooperation with the Great Lakes Restoration Initiative was completed to describe trends in climate, streamflow, lake levels, and...
Constraining the oxygen isotopic composition of nitrate produced by nitrification
Danielle S. Boshers, Julie Granger, Craig R. Tobias, J.K. Bohlke, Richard L. Smith
2019, Environmental Science & Technology (53) 1206-1216
Measurements of the stable isotope ratios of nitrogen (15N/14N) and oxygen (18O/16O) in nitrate (NO3–) enable identification of sources, dispersal, and fate of natural and contaminant NO3– in aquatic environments. The 18O/16O of NO3– produced by nitrification is often assumed to reflect the proportional contribution of oxygen atom sources, water, and molecular oxygen,...
Groundwater and surface-water data collection for Mason County, western Washington, 2016–18
Alison E. Tecca, Lonna M. Frans
2019, Data Series 1106
Groundwater levels and surface water flow measurements were collected from August 2016 to September 2018 to provide the Mason Conservation District and other stakeholders with basic knowledge of existing water resources in Mason County, Washington. Additionally, the data were collected with the intent of contributing to informed decision making about...
Migratory goose arrival time plays a larger role in influencing forage quality than advancing springs in an Arctic coastal wetland
Karen H. Beard, Ryan T. Choi, A. Joshua Leffer, Lindsay Carlson, Katharine C. Kelsey, Joel A. Schmutz, Jeffrey Welker
2019, PLoS ONE (14)
With warmer springs, herbivores migrating to Arctic breeding grounds may experience phenological mismatches between their energy demands and the availability of high quality forage. However, the timing of high quality forage relative to the timing of grazing is often unknown. In coastal western Alaska, approximately one million migratory geese arrive...
Winter precipitation and summer temperature predict lake water quality at macroscales
S. M. Collins, S. Yuan, P. N. Tan, S. K. Oliver, J. F. Lapierre, K. S. Cheruvelil, C. E. Fergus, N. K. Skaff, J. Stachelek, Tyler Wagner, P. A. Soranno
2019, Water Resources Research (55) 2708-2721
Climate change can have strong effects on aquatic ecosystems, including disrupting nutrient cycling and mediating processes that affect primary production. Past studies have been conducted mostly on individual or small groups of ecosystems, making it challenging to predict how future climate change will affect water quality at broad scales. We...
Flood-inundation maps for the Yellow River from River Drive to Centerville Highway, Gwinnett County, Georgia
Jonathan W. Musser
2019, Scientific Investigations Report 2019-5009
Digital flood-inundation maps for a 16.4-mile reach of the Yellow River in Gwinnett County, Georgia, from 0.5 mile upstream from River Drive to Centerville Highway (Georgia State Route 124) were developed to depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) at two...
Widespread global peatland establishment and persistence over the last 130,000 y
Claire C. Treat, Thomas Kleinen, Nils Broothaerts , April S. Dalton, Rene Dommain, Thomas A. Douglas, Judith Z. Drexler, Sarah A Finkelstein, Guido Grosse, Geoffrey Hope, Jack Hutchings, Miriam C. Jones, Peter Kuhry, Terri Lacourse, Outi Lahteenoja, Julie Loisel, Bastiaan Notebaert, Richard Payne, Dorothy M. Peteet, A. Britta K. Sannel, Jonathan M. Stelling, Jens Strauss, Graeme T. Swindles, Julie Talbot, Charles Tarnocai, Gert Verstraeten, Christopher J. Williams , Zhengyu Xia, Zicheng Yu, Minna Valiranta, Martina Hattestrand, Helena Alexanderson, Victor Brovkin
2019, PNAS (116) 4822-4827
Glacial−interglacial variations in CO2 and methane in polar ice cores have been attributed, in part, to changes in global wetland extent, but the wetland distribution before the Last Glacial Maximum (LGM, 21 ka to 18 ka) remains virtually unknown. We present a study of global peatland extent and carbon (C) stocks...
Leakage and increasing fluid pressure detected in Oklahoma's wastewater disposal reservoir
Andrew J. Barbour, Lian Xu, Evelyn Roeloffs, Justin Rubinstein
2019, Journal of Geophysical Research 2896-2919
The Arbuckle Group is the principal reservoir used for wastewater disposal in Oklahoma. In Osage County—a seismically quiet part of the state—continuous measurements of fluid pressure reveal that pressure in the reservoir is increasing by at least 5 kPa annually and sometimes at a much higher rate. Tidal analysis reveals...
Flood-inundation maps of the Meramec River from Eureka to Arnold, Missouri, 2018
Benjamin J. Dietsch, Kellan R. Strauch
2019, Scientific Investigations Report 2019-5004
Libraries of digital flood-inundation maps that spanned a combined 37.2-mile reach of the Meramec River that extended upstream from Eureka, Missouri, to downstream near the confluence of the Meramec and Mississippi Rivers were created by the U.S. Geological Survey (USGS) in cooperation with the U.S. Army Corps of Engineers, Metropolitan...
Water-balance modeling of selected lakes for evaluating viability as long-term fisheries in Kidder, Logan, and Stutsman Counties, North Dakota
Robert F. Lundgren, Benjamin C. York, Nathan A. Stroh, Aldo V. Vecchia
2019, Scientific Investigations Report 2019-5007
Water levels in lakes and wetlands in the central North Dakota Missouri Coteau region that were either dry or only sporadically held water since before the 1930s have been rising since the early 1990s in response to an extended wet period. The lakes have remained full since the mid-1990s, which...
