Earthquakes indicated magma viscosity during Kīlauea’s 2018 eruption
Diana Roman, Arianna Soldati, Donald Bruce Dingwell, Bruce F. Houghton, Brian Shiro
2021, Nature (592) 237-241
Magma viscosity strongly controls the style (for example, explosive versus effusive) of a volcanic eruption and thus its hazard potential, but can only be measured during or after an eruption. The identification of precursors indicative of magma viscosity would enable forecasting of the eruption style and...
A new addition to the embalmed fauna of ancient Egypt: Güldenstaedt’s White-toothed Shrew, Crocidura gueldenstaedtii (Pallas, 1811) (Mammalia: Eulipotyphla: Soricidae)
Neal Woodman, Salima Ikram, Joanne Rowland
2021, PLoS ONE (16)
The Falcon Necropolis at Quesna in the Nile Delta of Egypt is considered to have been founded by the priest Djedhor, the Saviour, of Athribis (Tell Atrib in modern Benha) at the beginning of the Ptolemaic Period. Recent excavations here have revealed abundant avian remains from...
Using enclosed Y-mazes to assess chemosensory behavior in reptiles
M. Rockwell Parker, Andrea Faye Currylow, Eric A. Tillman, Charlotte J. Robinson, Jillian Maureen Josimovich, Isabella M.G. Bukovich, Lauren A. Nazarian, Melia G. Nafus, Bryan M. Kluever, Amy A. Yackel Adams
2021, Journal of Visualized Experiments (170)
Reptiles utilize a variety of environmental cues to inform and drive animal behavior such as chemical scent trails produced by food or conspecifics. Decrypting the scent-trailing behavior of vertebrates, particularly invasive species, enables the discovery of cues that induce exploratory behavior and can aid in the development of valuable basic...
Unsaturated flow processes and the onset of seasonal deformation in slow-moving landslides
Noah J. Finnegan, Jonathan P. Perkins, Alexander Lewis Nereson, Alexander L. Handwerger
2021, Journal of Geophysical Research: Earth Surface (126)
Predicting rainfall-induced landslide motion is challenging because shallow groundwater flow is extremely sensitive to the preexisting moisture content in the ground. Here, we use groundwater hydrology theory and numerical modeling combined with five years of field monitoring to illustrate how unsaturated groundwater flow processes modulate the seasonal...
Editorial: Science and applications of coastal remote sensing
Kevin R. Turpie, Steven G. Ackleson, Kristin B. Byrd, Tiffany K. Moisan
2021, Frontiers in Marine Science (8)
No abstract available....
The American Kestrel (Falco sparverius) genoscape: Implications for monitoring, management, and subspecies boundaries
K. C. Ruegg, M. Brinkmeyer, C. M. Bossu, R. Bay, E. C. Anderson, Clint W. Boal, R. D. Dawson, A. Eschenbauch, C. J. W. McClure, K. E. Miller, L. Morrow, J. R. Morrow, M. D. Oleyar, B. Ralph, S. Schulwitz, T. Swem, J. F. Therrien, Rich Van Buskirk, T. B. Smith, J. A. Heath
J-F. Therrien, editor(s)
2021, Ornithology (138)
Identifying population genetic structure is useful for inferring evolutionary process and comparing the resulting structure with subspecies boundaries can aid in species management. The American Kestrel (Falco sparverius) is a widespread and highly diverse species with 17 total subspecies, only 2 of which are found north of U.S./Mexico border (F....
A reassessment of Chao2 estimates for population monitoring of grizzly bears in the Greater Yellowstone Ecosystem
Frank T. van Manen, Michael R. Ebinger, Mark A. Haroldson, Daniel D. Bjornlie, Justin Clapp, Daniel J. Thompson, Kevin L. Frey, Cecily M. Costello, Curtis Hendricks, Jeremy M. Nicholson, Kerry A. Gunther, Katharine R. Wilmot, Hilary Cooley, Jennifer Fortin-Noreus, Pat Hnilicka, Daniel B. Tyers
2021, Report
The Yellowstone Ecosystem Subcommittee (YES) asked the Interagency Grizzly Bear Study Team (IGBST) to re-assess a technique used in annual population estimation and trend monitoring of grizzly bears in the Greater Yellowstone Ecosystem (GYE). This technique is referred to as the Chao2 approach and estimates the number of females with...
Weather affects post‐fire recovery of sagebrush‐steppe communities and model transferability among sites
Cara Applestein, Trevor Caughlin, Matthew J. Germino
2021, Ecosphere (12)
Altered climate, including weather extremes, can cause major shifts in vegetative recovery after disturbances. Predictive models that can identify the separate and combined temporal effects of disturbance and weather on plant communities and that are transferable among sites are needed to guide vulnerability assessments and management...
Machine-learning predictions of high arsenic and high manganese at drinking water depths of the glacial aquifer system, northern continental United States
Melinda L. Erickson, Sarah M. Elliott, Craig J. Brown, Paul Stackelberg, Katherine Marie Ransom, James E. Reddy, Charles A. Cravotta III
2021, Environmental Science & Technology (9) 5791-5805
Globally, over 200 million people are chronically exposed to arsenic (As) and/or manganese (Mn) from drinking water. We used machine-learning (ML) boosted regression tree (BRT) models to predict high As (>10 μg/L) and Mn (>300 μg/L) in groundwater from the glacial...
Identifying resting locations of a small elusive forest carnivore using a two-stage model accounting for GPS measurement error and hidden behavioral states
Dalton Hance, Katie M. Moriarty, Bruce A. Hollen, Russell Perry
2021, Movement Ecology (9)
Studies of animal movement using location data are often faced with two challenges. First, time series of animal locations are likely to arise from multiple behavioral states (e.g., directed movement, resting) that cannot be observed directly. Second, location data can be affected by measurement error, including failed location fixes. Simultaneously...
Prevalence of neonicotinoids and sulfoxaflor in alluvial aquifers in a high corn and soybean producing region of the Midwestern United States
D.A. Thompson, Dana W. Kolpin, Michelle Hladik, Kimberlee K. Barnes, J.D. Vargo, R.W. Field
2021, Science of the Total Environment (782)
Neonicotinoids have been previously detected in Iowa surface waters, but less is known regarding their occurrence in groundwater. To help fill this research gap, a groundwater study was conducted in eastern Iowa and southeastern Minnesota, a corn and soybean producing area with known heavy neonicotinoid...
Five decades of observed daily precipitation reveal longer and more variable drought events across much of the western United States
Fangyue Zhang, Joel A. Biederman, Matthew P. Dannenberg, Dong Yan, Sasha C. Reed, William K. Smith
2021, Geophysical Research Letters (48)
Multiple lines of evidence suggest climate change will result in increased precipitation variability and consequently more frequent extreme events. These hydroclimatic changes will likely have significant socioecological impacts, especially across water-limited regions. Here we present an analysis of daily meteorological observations from 1976 to 2019 at 337...
Water resources of St. Martin Parish, Louisiana
Maxwell A. Lindaman, Vincent E. White
2021, Fact Sheet 2021-3007
Information concerning the availability, use, and quality of water in St. Martin Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about...
Water resources of Iberville Parish, Louisiana
Maxwell A. Lindaman, Vincent E. White
2021, Fact Sheet 2021-3014
Information concerning the availability, use, and quality of water in Iberville Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, about 589.87 million...
3D Elevation Program—Federal best practices
Vicki Lukas, Vanessa Baez
2021, Fact Sheet 2020-3062
The goal of the 3D Elevation Program (3DEP) is to complete nationwide data acquisition in 8 years, by 2023, to provide the first-ever national baseline of consistent high-resolution three-dimensional data—including bare earth elevations and three-dimensional point clouds—collected in a timeframe of less than a decade. Successful implementation of 3DEP depends...
Aquaculture and Irrigation Water-Use Model (AIWUM) version 1.0—An agricultural water-use model developed for the Mississippi Alluvial Plain, 1999–2017
Jordan L. Wilson
2021, Scientific Investigations Report 2021-5011
Water use is a critical and often uncertain component of quantifying any water budget and securing reliable and sustainable water supplies. Recent water-level declines in the Mississippi Alluvial Plain (MAP), especially in the central part of the Mississippi Delta, pose a threat to water sustainability. Aquaculture and Irrigation Water-Use Model...
Linear regression model documentation and updates for computing water-quality constituent concentrations or densities using continuous real-time water-quality data for the Kansas River, Kansas, July 2012 through September 2019
Thomas J. Williams
2021, Open-File Report 2021-1018
The Kansas River provides drinking water to about 800,000 people in northeastern Kansas. Water-treatment facilities that use the Kansas River as a water-supply source use chemical and physical processes during water treatment to remove contaminants before public distribution. Advanced notification of changing water-quality conditions near water-supply intakes allows water-treatment facilities...
Dynamic Energy Budget modelling to predict eastern oyster growth, reproduction, and mortality under river management and climate change scenarios
Romain Lavaud, Megan La Peyre, Justic Dubravko, Jerome F. La Peyre
2021, Estuarine, Coastal and Shelf Science (251)
Eastern oysters growing in deltaic Louisiana estuaries in the northern Gulf of Mexico must tolerate considerable salinity variation from natural climate variability (e.g., rainfall and stream run-off pushing isohalines offshore; tropical storms pushing isohalines inshore) and man-made diversions and siphons releasing freshwater from the Mississippi River. These salinity variations are...
Advancements in analytical approaches improve whitebark pine monitoring results
Erin Shanahan, Kathryn M. Irvine
2021, Newsletter
Long-term monitoring programs track the status and trends of species in increasingly vulnerable environments. These monitoring results provide critical information for evaluating, understanding, and managing natural resources. To accurately interpret if and how conditions may be changing for select ecological indicators, it is essential that monitoring programs adopt methods to...
Synthesis of geochronologic research on Late Pliocene to Holocene emergent shorelines in the lower Savannah River area of southeastern Georgia, USA
Helaine W. Markewich, Milan J. Pavich, Shannon A. Mahan, Paul R. Bierman, Wilma B. Aleman-Gonzalez, Arthur P. Schultz
2021, Open-File Report 2021-1015
Emergent late Pliocene and Pleistocene shoreline deposits, morphologically identifiable Pleistocene shoreline units, and seaward-facing scarps characterize the easternmost Atlantic Coastal Plain (ACP) of the United States of America. In some areas of the ACP, these deposits, units, and scarps have been studied in detail. Within these areas, temporal and spatial...
Half of global methane emissions come from highly variable aquatic ecosystem sources
Judith A. Rosentreter, Alberto V. Borges, Bridget Deemer, Meredith A. Holgerson, Shaoda Liu, Chunlin Song, John M. Melack, Peter A. Raymond, Carlos M. Duarte, George H. Allen, David Olefeldt, Benjamin Poulter, Tom I. Batin, Bradley D. Eyre
2021, Nature Geoscience (14) 225-230
Atmospheric methane is a potent greenhouse gas that plays a major role in controlling the Earth’s climate. The causes of the renewed increase of methane concentration since 2007 are uncertain given the multiple sources and complex biogeochemistry. Here, we present a metadata analysis of methane fluxes from all major natural,...
Water reliability in the west -- SECURE Water Act Section 9503(C)
Marketa McGuire, Subhrendu Gangopadhyay, Justin Martin, Gregory T. Pederson, Connie A. Woodhouse, Jeremy Littell
2021, Report, Technical Memorandum No. ENV-2021-001
No abstract available....
Implementation plan for the southern Pacific Border and Sierra-Cascade Mountains provinces
Victoria E. Langenheim, Russell W. Graymer, Robert E. Powell, Kevin M. Schmidt, Donald S. Sweetkind
2021, Open-File Report 2021-1012
IntroductionThe National Cooperative Geologic Mapping Program (NCGMP) is publishing a strategic plan titled Renewing the National Cooperative Geologic Mapping Program as the Nation’s Authoritative Source for Modern Geologic Knowledge (Brock and others, in press). The plan provides a vision, mission, and goals for the program during the years 2020–2030, which...
Non-native Pond Sliders cause long-term decline of native Sonora Mud Turtles: A 33-year before-after study in an undisturbed natural environment
Charles A. Drost, Jeffrey E. Lovich, Philip C. Rosen, Matthew Malone, Steven D. Garber
2021, Aquatic Invasions (16) 542-570
Using a before-after study design in a stable, largely undisturbed pond habitat and a dataset spanning 33 years, we document and describe the decline of native Sonora mud turtles (Kinosternon sonoriense) after the introduction of non-native pond sliders (Trachemys scripta). The Sonora mud turtle population in Montezuma Well in central...
Climate change may cause shifts in growth and instantaneous natural mortality of American Shad throughout their native range
Erin K. Gilligan, Daniel S. Stich, Katherine E. Mills, Michael M. Bailey, Joseph D. Zydlewski
2021, Transactions of the American Fisheries Society (150) 407-421
American Shad Alosa sapidissima is an anadromous species with populations ranging along the U.S. Atlantic coast. Past American Shad stock assessments have been data limited and estimating system-specific growth parameters or instantaneous natural mortality (M) was not possible. This precluded system-specific stock assessment and management due to reliance...
