Impacts of spontaneous waterfall development on bedrock river longitudinal profile morphology
Sophie D. Rothman, Joel S. Scheingross, Scott W. McCoy, Helen Willemien Dow
2023, Journal of Geophysical Research - Earth Surface (128)
River profiles are shaped by climatic and tectonic history, lithology, and internal feedbacks between flow hydraulics, sediment transport and erosion. In steep channels, waterfalls may self-form without changes in external forcing (i.e., autogenic formation) and erode at rates faster or slower than an equivalent channel without waterfalls....
Stratigraphic Notes
Randall C. Orndorff, Nancy R. Stamm, David R. Soller, editor(s)
2023, Professional Paper 1879
Welcome to the resurrected series of U.S. Geological Survey (USGS) reports on stratigraphy entitled “Stratigraphic Notes.” For several decades, until the mid-1990s, the USGS published volumes of short papers that highlighted stratigraphic studies, changes in stratigraphic nomenclature, and explanations of stratigraphic names and concepts used on published geologic maps. The...
Stratigraphic notes—Volume 1, 2022
Randall C. Orndorff, Nancy R. Stamm, David R. Soller, editor(s)
2023, Professional Paper 1879-1
This is the first volume in the U.S. Geological Survey (USGS) series of reports on stratigraphy entitled “Stratigraphic Notes,” which consists of short papers that highlight stratigraphic studies, changes in stratigraphic nomenclature, and explanations of stratigraphic names and concepts used on published geologic maps. “Stratigraphic Notes” is a long-term (multiyear),...
Apparent discrepancies in the review “Avian host range of Chlamydophila spp. based on isolation, antigen detection and serology” by Kaleta, E.F. & Taday, E.M.A. (2003), Avian Pathology, 32, 435–462
J. Christian Franson
2023, Avian Pathology (52) 283-284
Citing published reports and their own diagnostic data, Kaleta and Taday (Citation2003) (https://doi.org/10.1080/03079450310001593613) reported that 469 domestic and free-living bird species were determined to be chlamydia-positive, based on isolation of the organism and antigen detection or on serological detection of circulating antibodies. However, I was unable to...
Postfire hydrologic response along the central California (USA) coast: Insights for the emergency assessment of postfire debris-flow hazards
Matthew A. Thomas, Jason W. Kean, Scott W. McCoy, Donald N. Lindsay, Jaime Kostelnik, David B. Cavagnaro, Francis K. Rengers, Amy E. East, Jonathan Schwartz, Douglas P. Smith, Brian D. Collins
2023, Landslides (20) 2421-2436
The steep, tectonically active terrain along the Central California (USA) coast is well known to produce deadly and destructive debris flows. However, the extent to which fire affects debris-flow susceptibility in this region is an open question. We documented the occurrence of postfire debris floods and flows following the landfall...
Translating stakeholder narratives for participatory modeling in landscape ecology
Jelena Vukomanovic, Lindsey Smart, Jennifer Koch, Virginia Dale, Sophie Plassin, Kristin B. Byrd, Colin Beier, Frederik Doyon
2023, Landscape Ecology (38) 2453-2474
ContextEngaging stakeholders in research is needed for many of the sustainability challenges that landscape ecologists address. Involving stakeholders’ perspectives through narratives in participatory modeling fosters better understanding of the problem and evaluation of the acceptability of tradeoffs and creates buy-in for management actions. However, stakeholder-driven inputs often take...
Introduction to the special section on seismoacoustics and seismoacoustic data fusion
Fransiska K. Dannemann Dugick, Jordan W. Bishop, Leo Martire, Alexandra M. Iezzi, Jelle D. Assink, Quentin Brissaud, Stephen Arrowsmith
2023, Bulletin of the Seismological Society of America (113) 1383-1389
A variety of geophysical hazards (e.g., volcanic activity, earthquakes, mass movements, marine storms, bolides) and anthropogenic sources (e.g., chemical and nuclear explosions, mining blasts, rocket launches) can release energy as mechanical waves in the ground, ocean, and atmosphere (Arrowsmith et al., 2010; Campus and Christie, 2009). Due to the mechanical...
Atmospheric deposition of inorganic reactive nitrogen at the Rocky Flats National Wildlife Refuge, 2017–19
Gregory A. Wetherbee
2023, Open-File Report 2023-1027
The Rocky Flats National Wildlife Refuge (RFNWR) in Colorado is home to increasingly rare, xeric tallgrass prairie. The RFNWR is also located near many combustion and agricultural sources of inorganic reactive nitrogen (Nr), which emit Nr to the atmosphere. Wet atmospheric deposition of Nr was monitored at RFNWR during 2017–19...
Assessment of coalbed gas resources in the Raton Basin-Sierra Grande Uplift Province, Colorado and New Mexico, 2022
Christopher J. Schenk, Thomas M. Finn, Tracey J. Mercier, Cheryl A. Woodall, Phuong A. Le, Andrea D. Cicero, Ronald M. Drake II, Geoffrey S. Ellis, Michael H. Gardner, Sarah E. Gelman, Jane S. Hearon, Benjamin G. Johnson, Jenny H. Lagesse, Heidi M. Leathers-Miller, Kristen R. Marra, Kira K. Timm, Scott S. Young
2023, Fact Sheet 2023-3020
Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 5.2 trillion cubic feet of coalbed gas in the Vermejo Formation and Raton Formation of the Raton Basin-Sierra Grande Uplift Province....
Wildfire immediately reduces nest and adult survival of greater sage-grouse
Emily A Tyrrell, Peter S. Coates, Brian G. Prochazka, Brianne E. Brussee, Shawn P. Espinosa, Joshua M. Hull
2023, Scientific Reports (13)
Wildfire events are becoming more frequent and severe on a global scale. Rising temperatures, prolonged drought, and the presence of pyrophytic invasive grasses are contributing to the degradation of native vegetation communities. Within the Great Basin region of the western U.S., increasing wildfire frequency is transforming the ecosystem toward a...
Changes in abiotic drivers of green sea urchin demographics following the loss of a keystone predator
Ben P. Weitzman, B. Konar, M. S. Edwards, D. B. Rasher, Michael C. Kenner, M. T. Tinker, J. A. Estes
2023, Journal of Marine Sciences (2023)
Sea urchin population demographics can respond to changes in keystone species abundances, with the magnitude of these responses varying depending on environmental influences. In this study, sea urchin populations were surveyed across 15 Aleutian archipelago islands over a 30-year period to understand how patterns of sea urchin demography (density, biomass,...
A detailed view of the 2020-2023 southwestern Puerto Rico seismic sequence with deep learning
Clara Yoon, Elizabeth S. Cochran, Elizabeth A. Vanacore, Victor Huerfano, Gisela Baez-Sanchez, John D. Wilding, Jonathan D. Smith
2023, Bulletin of the Seismological Society of America (113) 2377-2415
The 2020–2023 southwestern Puerto Rico seismic sequence, still ongoing in 2023, is remarkable for its multiple‐fault rupture complexity and elevated aftershock productivity. We applied an automatic workflow to continuous data from 43 seismic stations in Puerto Rico to build an enhanced earthquake catalog with ∼180,000 events for the 3+ yr...
Structural discontinuities and their control on hydrothermal systems in the Great Basin, USA
Drew L. Siler
2023, Geoenergy (1)
Faults are important controls on hydrothermal circulation worldwide. More specifically, structural discontinuities, i.e. locations where faults interact and intersect, host many hydrothermal systems. In the Great Basin, western USA, an extensive characterization effort demonstrated that hydrothermal systems are controlled by one (or more) of eight types of structural discontinuities. Presumably,...
Supporting the development and use of native plant materials for restoration on the Colorado Plateau (Fiscal Year 2022 Report)
Robert Massatti, Daniel E. Winkler, Sasha C. Reed, Michael C. Duniway, Seth M. Munson, John B. Bradford
2023, Report
A primary focus of the Colorado Plateau Native Plant Program (CPNPP) is to identify and develop appropriate native plant materials (NPMs) for current and future restoration projects. Multiple efforts have characterized the myriad challenges inherent in providing appropriate seed resources to enable effective, widespread restoration and have identified a broad...
Storms and pH of dam releases affect downstream phosphorus cycling in an arid regulated river
Bridget Deemer, Robin H. Reibold, Anna Fatta, Jessica R. Corman, Charles Yackulic, Sasha C. Reed
2023, Biogeochemistry (165) 57-74
Reservoirs often bury phosphorus (P), leading to seasonal or persistent reductions in P supply to downstream rivers. Here we ask if observed variation in the chemistry of dam release waters stimulates downstream sediment P release and biological activity in an arid, oligotrophic system, the Colorado River...
White perch health relative to urbanization and habitat degradation in Chesapeake Bay tributaries. II. Hepatic and splenic macrophage aggregates
Vicki S. Blazer, Mark A Matsche, Erin L. Pulster
2023, Diseases of Aquatic Organisms (154) 107-130
Macrophage aggregate (MA) abundance in fish is a useful general biomarker of contaminant exposures and environmental stress. Hepatic and splenic MAs were evaluated in semi-anadromous white perch Morone americana (Gmelin, 1789) from the urbanized Severn River (S) and the more rural Choptank River (C), Chesapeake Bay. Fish were collected from different...
Effects of hard water precipitates on early life stage brook trout
John Davidson, Brandon J. Keplinger, Clayton D. Raines, Curtis Crouse, CHristopher Goodchild
2023, Hatchery International (24) 24-25
Brook trout (Salvelinus fontinalis) have been extirpated from many karst-geology streams in West Virginia; however, the causes are not fully understood. Specifically, the impact of calcareous precipitate (marl), which is common in hard-water environments, has not been evaluated as an impediment to juvenile survival. Accordingly, two lab-based studies were conducted...
Beyond simple trend tests: Detecting significant changes in design-flood quantiles
Chandramauli Awasthi, Stacey A. Archfield, Brian J. Reich, Arumugam Sankarasubramanian
2023, Geophysical Research Letters (50)
Changes in annual maximum flood (AMF), which are usually detected using simple trend tests (e.g., Mann-Kendall test (MKT)), are expected to change design-flood estimates. We propose an alternate framework to detect significant changes in design-flood between two periods and evaluate it for synthetically generated AMF from the...
White perch health relative to urbanization and habitat degradation in Chesapeake Bay tributaries. I. Biliary neoplasms and hepatic lesions
Vicki S. Blazer, Mark A Matsche, Erin L. Pulster
2023, Diseases of Aquatic Organisms (154) 85-105
White perch Morone americana (Gmelin, 1789) from the Chesapeake Bay (USA) watershed have a high incidence of liver disease, including neoplasms of bile duct origin. Fish collected seasonally from spring 2019 to winter 2020 from the urban Severn River and the more rural Choptank River were evaluated for hepatic lesions. Biliary...
Refining capture-recapture recruitment estimation methods for Atlantic sturgeon
M.A. Baker, E.C. Ingram, D.L. Higginbotham, Brian J. Irwin, A.G. Fox
2023, Endangered Species Research (51) 203-214
The Atlantic sturgeon Acipenser oxyrinchus oxyrinchus was once of great commercial importance in many coastal rivers of the eastern USA. Over the 19th and 20th centuries, most historical stocks of Atlantic sturgeon were depleted by human activities. Estimating recruitment for the remaining populations is challenging due to sampling constraints, limited age...
The Factors Affecting Female Black Bear Harvest Rates in Pennsylvania
Brandon M. Snavely, Robert Charles Lonsinger
2023, Cooperator Science Series FWS/CSS-150-2023
Pennsylvania’s black bear (Ursus americanus) population increased in abundance and distribution during the latter third of the 20th century, leading to an increase in human-bear conflicts. Increases in harvest opportunities from 2002–2018 aimed to stabilize black bear population growth but did not substantially increase harvest, and annual harvest was often...
Evolution of a minimal cell
Roy Z. Moger-Reischer, John I. Glass, Kim S. Wise, Lijie Sun, Daniela Bittencourt, Brent K. Lehmkuhl, Donald Schoolmaster, Michael Lynch, Jay T. Lennon
2023, Nature (620) 122-127
Possessing only essential genes, a minimal cell can reveal mechanisms and processes that are critical for the persistence and stability of life1,2. Here we report on how an engineered minimal cell3,4 contends with the forces of evolution compared with the Mycoplasma mycoides non-minimal cell from which it was synthetically...
SARS-CoV-2 utilization of ACE2 from different bat species allows for virus entry and replication in vitro
Kelsey Briggs, Ryan Sweeney, David S. Blehert, Erica Spackman, David L. Suarez, Darrel Kapczynski
2023, Virology (586) 122-129
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is believed to have a zoonotic origin with bats suspected as a natural host. In this work, we individually express the ACE2 of seven bat species including, little brown, great roundleaf, Pearson's horseshoe,...
Identifying invertebrate indicators for streamflow duration assessments in forested headwater streams
Ken M. Fritz, Roxolana O. Kashuba, Gregory J. Pond, Jay R. Christensen, Laurie C. Alexander, Benjamin J. Washington, Brent R. Johnson, David Walters, William T. Thoeny, Paul C. Weaver
2023, Freshwater Science (42) 247-267
Streamflow-duration assessment methods (SDAMs) are rapid, indicator-based tools for classifying streamflow duration (e.g., intermittent vs perennial flow) at the reach scale. Indicators are easily assessed stream properties used as surrogates of flow duration, which is too resource intensive to measure directly for many reaches. Invertebrates are commonly...
Estimating proximity effects to wildfire fuels treatments on house prices in Cibola National Forest, New Mexico, USA
Ryan A. Fitch, Julie M. Mueller, James Meldrum, Christopher Huber
2023, Landscape and Urban Planning (238)
Forested landscapes in the Western United States are subject to growing size and severity of wildfires, in part due to historical management strategies focusing on wildfire suppression. Forest restoration treatments and fuels reductions, including thinning and prescribed burning, can reduce the frequency and intensity of wildfires. Extensive restoration and fuels...
