A progressive flow-routing model for rapid assessment of debris-flow inundation
Alexander Gorr, Luke A. McGuire, Ann Youberg, Francis K. Rengers
2022, Landslides (19) 2055-2073
Debris flows pose a significant hazard to communities in mountainous areas, and there is a continued need for methods to delineate hazard zones associated with debris-flow inundation. In certain situations, such as scenarios following wildfire, where there could be an abrupt increase in the likelihood and...
Laurentia in transition during the Mesoproterozoic: Observations and speculation on the ca. 1500–1340 Ma tectonic evolution of the southern Laurentian margin
Christopher G. Daniel, Ruth Aronoff, Aphrodite Indares, James V. Jones III
2022, Book chapter, Laurentia: Turning points in the evolution of a continent
An accretionary tectonic model for the Mesoproterozoic ca. 1500–1340 Ma tectonic evolution of the southern Laurentian margin is presented. The tectonic model incorporates key observations about the nature and timing of Mesoproterozoic deposition, magmatism, regional metamorphism, and deformation across the 5000-km-long southern Laurentian margin. This time period was one of...
Water-use data in the United States: Challenges and future directions
Landon Marston, Abdel Abdallah, Kenneth J. Bagstad, Kerim Dickson, Pierre D. Glynn, Sara Larsen, Forrest Melton, Kyle Onda, Jaime A. Painter, James Prairie, Benjamin Ruddell, Richard Rushforth, Gabriel B. Senay, Kimberly Shaffer
2022, Journal of the American Water Resources Association (58) 485-495
In the United States, greater attention has been given to developing water supplies and quantifying available waters than determining who uses water, how much they withdraw and consume, and how and where water use occurs. As water supplies are stressed due to an increasingly variable climate,...
Summary of the midchannel springflows in Jackson River below Gathright Dam between April 24, 2010, and May 7, 2019
Bryan Pula, Shaun Wicklein
2022, Open-File Report 2022-1047
Between April 2010 and May 2019, springflow was determined for a midchannel spring in Jackson River below Gathright Dam near Hot Springs, Virginia. The springflow was measured to assess if the spring was influenced by the elevation of Lake Moomaw. Local precipitation was also reviewed to determine whether variations in springflow were influenced by...
Age and water-quality characteristics of groundwater discharge to the South Loup River, Nebraska, 2019
Christopher M. Hobza, John E. Solder
2022, Scientific Investigations Report 2022-5042
Streams in the Loup River Basin are sensitive to groundwater withdrawals because of the close hydrologic connection between groundwater and surface water. The U.S. Geological Survey, in cooperation with the Upper Loup and Lower Loup Natural Resources Districts, and the Nebraska Environmental Trust, studied the age and water-quality characteristics of...
Compilation and evaluation of data used to identify groundwater sources under the direct influence of surface water in Pennsylvania
Eliza L. Gross, Matthew D. Conlon, Dennis W. Risser, Chad E. Reisch
2022, Open-File Report 2022-1023
A study was conducted to compile and evaluate data used to identify groundwater sources that are under the direct influence of surface water (GUDI) in Pennsylvania. In the early 1990s, the Pennsylvania Department of Environmental Protection (PADEP) implemented the Surface Water Identification Protocol (SWIP) for the identification of GUDI sources....
Black carbon dominated dust in recent radiative forcing on Rocky Mountain snowpacks
Kelly Gleason, Joseph R. McConnell, Monica Arienzo, Graham A. Sexstone, Stefan Rahimi
2022, Environmental Research Letters (17)
The vast majority of surface water resources in the semi-arid western United States start as winter snowpack. Solar radiation is a primary driver of snowmelt, making snowpack water resources especially sensitive to even small increases in concentrations of light absorbing particles such as mineral dust and combustion-related black carbon (BC)....
Grassland conservation supports migratory birds and produces economic benefits for the commercial beekeeping industry in the U.S. Great Plains
Clint Otto, Haochi Zheng, Torre Hovick, Max Post van der Burg, Benjamin A. Geaumont
2022, Ecological Economics (197)
Although declines in grassland birds have been documented, national initiatives to conserve grasslands and their biota have fallen short in part because the non-market values of natural ecosystems and species are often not recognized in political decision making. Identifying shared, anthropogenic...
What common-garden experiments tell us about climate responses in plants
Susanne Schwinning, Christopher J. Lorti, Todd Esque, Lesley A. DeFalco
2022, Journal of Ecology (110) 986-996
Common garden experiments are indoor or outdoor plantings of species or populations collected from multiple distinct geographic locations, grown together under shared conditions. These experiments examine a range of questions for theory and application using a variety of methods for analysis. The eight papers of this special feature comprise...
Classifying Worldwide Standardized Seismograph Network records using a simple convolution neural network
Nagle Nagle-McNaughton, Adam T. Ringler, Robert E. Anthony, Alexis Casondra Bianca Alejandro, David C. Wilson, Justin Thomas Wilgus
2022, Seismological Research Letters (93) 2451-2466
The U.S. Geological Survey (USGS) maintains an archive of 189,180 digitized scans of analog seismic records from the World‐Wide Standardized Seismograph Network (WWSSN). Although these scans have been made public, the archive is too large to manually review, and few researchers have utilized large...
Minimizing extinction risk in the face of uncertainty: Developing conservation strategies for 2 rapidly declining forest bird species on Kaua‘i Island
Eben H. Paxton, Lisa H. Crampton, John Vetter, Megan Laut, Lainie Berry, Steve Morey
2022, Wildlife Society Bulletin (46)
Many species around the world are declining precipitously as a result of multiple threats and changing climate. Managers tasked with protecting species often face difficult decisions in regard to identifying which threats should be addressed, given limited resources and uncertainty in the success of any identified...
Exposure to crop production alters cecal prokaryotic microbiota, inflates virulome and resistome in wild prairie grouse
Serguei Vyacheslavovich Drovetski, Brian K. Schmidt, Jonas Ethan Lai, Michael S. Gross, Michelle L. Hladik, Kenan Oguz Matterson, Natalie Karouna-Renier
2022, Environmental Pollution (306)
Chemically intensive crop production depletes wildlife food resources, hinders animal development, health, survival, and reproduction, and it suppresses wildlife immune systems, facilitating emergence of infectious diseases with excessive mortality rates. Gut microbiota is crucial for wildlife's response to environmental stressors. Its composition and functionality...
Air, land, and water variables associated with the first appearance and current spatial distribution of toxic Prymnesium parvum blooms in reservoirs of the Southern Great Plains, USA
Shisbeth Tabora-Sarmientoa, Reynaldo Patino, Carlos Portillo-Quintero, Cade Coldren
2022, Science of the Total Environment (836)
This study examined the association of air, land, and water variables with the first historical occurrence and current distribution of toxic Prymnesium parvum blooms in reservoirs of the Brazos River and Colorado River, Texas (USA). One impacted and one reference reservoir were selected per basin. Land cover and use variables were estimated for the...
The effect of diagenesis and acetolysis on the preservation of morphology and ultrastructural features of pollen
Michael Zavada, Paul C. Hackley
2022, Review of Palaeobotany and Palynology (302)
Pollen morphology on its own and in conjunction with other characteristics has elucidated the origin and evolution of various plant groups. Previous studies of fossil pollen rarely discuss the effects of diagenesis and sample preparation on pollen characteristics, i.e., variability in staining, pollen...
Incorporating snowmelt into daily estimates of recharge using a state-space model of infiltration
Allen M. Shapiro, Frederick Day-Lewis, William M. Kappel, John Williams
2022, Groundwater (60) 721-746
A state-space model (SSM) of infiltration estimates daily groundwater recharge using time-series of groundwater-level altitude and meteorological inputs (liquid precipitation, snowmelt, and evapotranspiration). The model includes diffuse and preferential flow through the unsaturated zone, where preferential flow is a function of liquid precipitation and snowmelt rates and a threshold rate,...
U.S. Geological Survey national shoreline change— Summary statistics for updated vector shorelines (1800s–2010s) and associated shoreline change data for the Georgia and Florida coasts
Meredith G. Kratzmann
2022, Data Report 1156
Rates of shoreline change have been updated for the open-ocean sandy coastlines of Georgia and Florida as part of the U.S. Geological Survey’s Coastal Change Hazards programmatic focus. This work was formerly within the National Assessment of Shoreline Change project. Shorelines were compiled from the original report published in 2005,...
The potential of semi-structured citizen science data as a supplement for conservation decision-making: Validating the performance of eBird against targeted avian monitoring efforts
Erica Francis Stuber, Orin Robinson, Emily R. Bjerre, Mark C. Otto, Brian A. Millsap, Guthrie S. Zimmerman, Michael G. Brasher, Kevin M. Ringelman, Auriel Fournier, Aaron Yetter, Jennifer Isola, Viviana Ruiz-Gutierrez
2022, Biological Conservation (270)
Methods are being developed to capitalize on citizen science data for research and monitoring, but these data are rarely used within established decision-making frameworks of wildlife agencies. Citizen science data are often collected at higher resolution and extent than targeted monitoring programs, and may provide complementary information. Here, we demonstrate...
Using predictions from multiple anthropogenic threats to estimate future population persistence of an imperiled species
Brian Folt, Michael Marshall, Jo Anna Emanuel, Michelina Dziadzio, Jane Cooke, Lourdes Mena, Matthew Hinderliter, Scott Hoffmann, Nicole Rankin, John Tupy, Conor P. McGowan
2022, Global Ecology and Conservation (36)
Imperiled species face numerous and diverse anthropogenic threats to their persistence, and wildlife managers charged with making conservation decisions benefit from a sound understanding of how populations, species, and ecosystems will respond to future changes in threats to biodiversity. In southeastern North America, the gopher tortoise (Gopherus polyphemus) is a keystone species in upland...
Compression behavior of hydrate-bearing sediments
Yi Fang, Peter Flemings, John Germaine, Hugh Daigle, Stephen C. Phillips, Joshua O’Connell
2022, AAPG Bulletin (106) 1101-1126
This work experimentally explores porosity, compressibility, and the ratio of horizontal to vertical effective stress (K0) in hydrate-bearing sandy silts from Green Canyon Block 955 in the deep-water Gulf of Mexico. The samples have an in situ porosity of 0.38 to 0.40 and a hydrate saturation of more than...
Permeability of methane hydrate-bearing sandy silts in the deep-water Gulf of Mexico (Green Canyon Block 955)
Yi Fang, Peter Flemings, Hugh Daigle, Stephen C. Phillips, Joshua O’Connell
2022, AAPG Bulletin (106) 1071-1100
Permeability is one of the most crucial properties governing fluid flow in methane hydrate reservoirs. This paper presents a comprehensive permeability analysis of hydrate-bearing sandy silt pressure-cored from Green Canyon Block 955 (GC 955) in the deep-water Gulf of Mexico. We developed an experimental protocol to systematically characterize the...
Assessing conservation and management actions with ecosystem services better communicates conservation value to the public
David M. Mushet, Max Post van der Burg, Michael J. Anteau
2022, Journal of Fish and Wildlife Management (13)
Fish and wildlife populations are under unprecedented threats from changes in land use and climate. With increasing threats comes a need for an expanded constituency that can contribute to the public support and financial capital needed for habitat conservation and management. Using an ecosystem services approach can provide a framework...
Integrated geochemical approach to determine the source of methane in gas hydrate from Green Canyon Block 955 in the Gulf of Mexico
Myles T. Moore, Stephen C. Phillips, Ann Cook, Thomas H. Darrah
2022, AAPG Bulletin (106) 949-980
Massive volumes of gas are sequestered within gas hydrate in subsurface marine sediments in the Gulf of Mexico. Methane associated with gas hydrate is a potentially important economic resource and a significant reservoir of carbon within the global carbon cycle. Nevertheless, uncertainties remain about the genetic source (e.g., microbial,...
A forested wetland at a climate-induced tipping-point: 17-year demographic evidence of widespread tree recruitment failure
Jonathan Evans, Sarah McCarthy-Neumann, Angus Pritchard, Jennifer M. Cartwright, William J. Wolfe
2022, Forest Ecology and Management (517)
Regeneration and survival of forested wetlands are affected by environmental variables related to the hydrologic regime. Climate change, specifically alterations to precipitation patterns, may have outsized effects on these forests. In Tennessee, USA, precipitation has increased by 15% since 1960. The goal of our research was to assess the evidence...
Toxicity of wildland fire-fighting chemicals in pulsed exposures to rainbow trout and fathead minnows
Holly J. Puglis, Michael G. Iacchetta, Christina M. Mackey
2022, Environmental Toxicology and Chemistry (41) 1711-1720
Intrusions of fire-fighting chemicals in streams can result from containment and suppression of wildfires and may be harmful to native biota. We investigated the toxicity of seven current-use fire-fighting chemicals to juvenile rainbow trout (Oncorhynchus mykiss) and fathead minnows (Pimephales promelas) by simulating chemical intrusions under variable field conditions to...
Microtremor array method using spatial autocorrelation analysis of Rayleigh‑wave data
Koichi Hayashi, Michael W. Asten, William J. Stephenson, Cecile Cornou, Manuel Hobiger, Marco Pilz, Hiroaki Yamanaka
2022, Journal of Seismology
Microtremor array measurements (MAM) and passive surface wave methods in general, have been increasingly used to non-invasively estimate shear-wave velocity structures (Vs) for various purposes. The methods estimate dispersion curves and invert them for retrieving S-wave velocity profiles. This paper summarizes principles, limitations, data collection and processing methods. It intends...
