Changes in suspended-sediment yields under divergent land-cover disturbance histories: A comparison of two large watersheds, Olympic Mountains, USA
Kristin L. Jaeger, Scott W. Anderson, Sarah B. Dunn
2023, Earth Surface Processes and Landforms (48) 1398-1413
Improvements in timber harvest practices and reductions in harvest volumes over the past half century are commonly presumed to have reduced sediment loads in many western US rivers. However, direct assessments in larger watersheds are relatively sparse. Here, we compare 2019–21 sediment concentrations against those of the...
Peat decomposition and erosion contribute to pond deepening in a temperate salt marsh
Sheron Luk, Meagan J. Eagle, Giulio Mariotti, Kelsey Gosselin, Jonathan Sanderman, Amanda C. Spivak
2023, Biogeosciences (128)
Salt marsh ponds expand and deepen over time, potentially reducing ecosystem carbon storage and resilience. The water filled volumes of ponds represent missing carbon due to prevented soil accumulation and removal by erosion and decomposition. Removal mechanisms have different implications as eroded carbon can be redistributed while decomposition...
iBluff: An open-source R package for geomorphic analysis of coastal bluffs/cliffs
Monica Palaseanu-Lovejoy
2023, SoftwareX (21)
The R package iBluff is designed for coastal bluffs/bluffs morphological analysis and offers an automatic and reproducible alternative to identify bluff edges using a bare earth digital elevation model (DEM) instead of hand digitizing. This package extracts elevation profiles along automatically identified transects on...
Assimilating ecological theory with empiricism: Using constrained generalized additive models to enhance survival analyses
Alison Ketz, Daniel J. Storm, Rachel Barker, Anthony D. Apa, Cristian Oliva-Aviles, Daniel P. Walsh
2023, Methods in Ecology and Evolution (14) 952-967
1. Integrating ecological theory with empirical methods is ubiquitous in ecology using hierarchical Bayesian models. However, there has been little development focused on integration of ecological theory into models for survival analysis. Survival is a fundamental process, linking individual fitness with population dynamics, but incorporating life history strategies to inform...
Estimating parasite infrapopulation size given imperfect detection: Proof-of-concept with ectoparasitic fleas on prairie dogs
David A. Eads, Kathryn P. Huyvaert, Dean E. Biggins
2023, International Journal for Parasitology: Parasites and Wildlife (20) 117-121
Parasite infrapopulation size - the population of parasites affecting a single host - is a central metric in parasitology. However, parasites are small and elusive such that imperfect detection is expected. Repeated sampling of parasites during primary sampling occasions (e.g., each host capture) informs the detection process. Here, we estimate...
Viability of side-scan sonar to enumerate Paddlefish, a large pelagic freshwater fish, in rivers and reservoirs
Wyatt Wolfenkoehler, James M. Long, Ryan Gary, Richard A. Snow, Jason D. Schooley, Lindsey Ann Bruckerhoff, Robert Charles Lonsinger
2023, Fisheries Research (261)
Recreational-grade side-scan sonar (SSS) has become an invaluable tool for inland fisheries, particularly when characterizing underwater habitat, but it is being increasingly used for enumerating large-bodied (> 1 m total length [TL]) aquatic fauna. We used SSS in river and reservoir environments to evaluate methods for identifying and counting Paddlefish Polyodon spathula, a large...
Decompression and degassing, repressurization, and regassing during cyclic eruptions at Guagua Pichincha volcano, Ecuador, 1999–2001
Heather M. Wright, Raffaello Cioni, Katharine V. Cashman, Patricia Mothes, Mauro Rosi
2023, Bulletin of Volcanology (85)
In 1999–2001, Guagua Pichincha volcano, Ecuador, produced a series of cyclic explosive and effusive eruptions. Rock samples, including dense blocks and pumiceous clasts collected during the eruption sequence, and ballistic bombs later collected from the crater floor, provide information about magma storage, ascent, decompression, degassing, repressurization, and regassing prior to...
New maps of conductive heat flow in the Great Basin, USA: Separating conductive and convective influences
Jacob DeAngelo, Erick R. Burns, Emilie Gentry, Joseph F. Batir, Cary Ruth Lindsey, Stanley Paul Mordensky
2023, Conference Paper, Proceedings, 48th Workshop on Geothermal Reservoir Engineering
Geothermal well data from Southern Methodist University and the U.S. Geological Survey (USGS) were used to create maps of estimated background conductive heat flow across the Great Basin region of the western United States. These heat flow maps were generated as part of the USGS hydrothermal and Enhanced Geothermal Systems...
Revising supraglacial rock avalanche magnitudes and frequencies in Glacier Bay National Park, Alaska
William Smith, Stuart A. Dunning, Neil Ross, Jon Telling, Erin K. Bessette-Kirton, Dan H. Shugar, Jeffrey A. Coe, M. Geertsema
2023, Geomorphology (425)
The frequency of large supraglacial landslides (rock avalanches) occurring in glacial environments is thought to be increasing due to feedbacks with climate warming and permafrost degradation. However, it is difficult to (i) test this; (ii) establish cause–effect relationships; and (iii) determine...
Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2021
Patrick J. Ryan
2023, Open-File Report 2022-1111
The U.S. Army Corps of Engineers, Jacksonville District, is deepening the St. Johns River channel in Jacksonville, Florida, by 7 feet along 13 miles of the river channel beginning at the mouth of the river at the Atlantic Ocean, in order to accommodate larger, fully loaded cargo vessels. The U.S....
Assessment of habitat use by juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Willamette River Basin, 2020–21
Gabriel S. Hansen, Russell W. Perry, Tobias J. Kock, James S. White, Philip V. Haner, John M. Plumb, J. Rose Wallick
2023, Open-File Report 2023-1001
We conducted a field study during 2020–21 to describe habitat use patterns of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the mainstem Willamette, McKenzie, and Santiam Rivers and to evaluate how habitat suitability criteria affected the predictive accuracy of a hydraulic habitat model. Two approaches were used to collect habitat use...
Simulation of regional groundwater flow and advective transport of per- and polyfluoroalkyl substances, Joint Base McGuire-Dix-Lakehurst and vicinity, New Jersey, 2018
Alex R. Fiore, Susan J. Colarullo
2023, Open-File Report 2022-1112
A three-dimensional numerical model of groundwater flow was developed and calibrated for the unconsolidated New Jersey Coastal Plain aquifers underlying Joint Base McGuire-Dix-Lakehurst (JBMDL) and vicinity, New Jersey, to evaluate groundwater flow pathways of per- and polyfluoroalkyl substances (PFAS) contamination associated with use of aqueous film forming foam (AFFF) at...
Rangeland Condition Monitoring Assessment and Projection, 1985–2021
Matthew B. Rigge
2023, Fact Sheet 2023-3004
The Rangeland Condition Monitoring Assessment and Projection (RCMAP) project quantifies the percentage cover of rangeland components across the western United States using Landsat imagery from 1985 to 2021. The RCMAP product suite consists of nine fractional components: annual herbaceous, bare ground, herbaceous, litter, nonsagebrush shrub, perennial herbaceous, sagebrush, shrub, and...
The effects of management practices on grassland birds—Clay-colored Sparrow (Spizella pallida)
Jill A. Shaffer, Lawrence D. Igl, Douglas H. Johnson, Marriah L. Sondreal, Christopher M. Goldade, Melvin P. Nenneman, Betty R. Euliss
2023, Professional Paper 1842-Z
Keys to Clay-colored Sparrow (Spizella pallida) management include providing grasslands with a shrub or forb component or shrub-dominated edge habitat, which includes dense grass and moderately high litter cover, and avoiding disturbances that completely eliminate woody vegetation. Clay-colored Sparrows have been reported to use habitats with 20–186 centimeters (cm) average...
Advancing best practices for the analysis of the vulnerability of military installations in the Pacific Basin to coastal flooding under a changing climate – RC-2644
John Marra, William Sweet, Eric Leuliette, Michael Kruk, Ayesha Genz, Curt D. Storlazzi, Peter Ruggiero, Meredith Leung, Dylan L. Anderson, Mark Merrifield, Janet Becker, Ian Robertson, Matthew J. Widlansky, Philip R. Thompson, Fernando Mendez, Ana Rueda, Jose A.A. Antolinez, Laura Cagigal, Melissa Menendez, Hector Lobeto, Jayantha Obeysekera, Chris Chiesa
2023, Report
Coastal flooding takes many forms, ranging from major flooding associated with storms to minor flooding associated with exceptionally high tides and other oceanic and atmospheric phenomena on storm-free days. A major societal challenge is to understand and predict how flood magnitude and frequency will manifest at particular places and times, now...
Context-dependent representation of within- and between-model uncertainty: Aggregating probabilistic predictions in infectious disease epidemiology
Emily Howerton, Michael C. Runge, Tiffany L. Bogich, Rebecca K. Borchering, Hidetoshi Inamine, Justin Lessler, Luke C Mullany, William J.M. Probert, Claire P. Smith, Shaun Truelove, Cècile Viboud, Katriona Shea
2023, Journal of the Royal Society Interface (20)
Probabilistic predictions support public health planning and decision making, especially in infectious disease emergencies. Aggregating outputs from multiple models yields more robust predictions of outcomes and associated uncertainty. While the selection of an aggregation method can be guided by retrospective performance evaluations, this is not always possible....
Improvements to estimate ADCP uncertainty sources for discharge measurements
Jose M. Diaz Lozada, Carlos M. Garcia, Kevin Oberg, Thomas M. Over, Federico Flores Nieto
2023, Flow Measurement and Instrumentation (90)
The use of moving boat ADCPs (Acoustic Doppler Current Profilers) for discharge measurements requires identification of the sources and magnitude of uncertainty to ensure accurate measurements. Recently, a tool known as QUant was developed to estimate the contribution to the uncertainty estimates for each transect of moving-boat ADCP discharge...
Stochastic watershed model ensembles for long-range planning: Verification and validation
Ghazal Shabestanipour, Zachary P Brodeur, William H. Farmer, Scott Steinschneider, Richard M Vogel, Jonathan Lamontagne
2023, Water Resource Research (59)
Deterministic watershed models (DWMs) are used in nearly all hydrologic planning, design, and management activities, yet they cannot generate streamflow ensembles needed for hydrologic risk management (HRM). The stochastic component of DWMs is often ignored in practice, leading to a systematic bias in extreme events. Since traditional...
Investigations of ambient noise velocity variations in a region of induced seismicity near Greeley, Colorado
Thomas Clifford, Anne Sheehan, Morgan P. Moschetti
2023, The Seismic Record (3) 12-20
Wastewater injection has induced earthquakes in Northeastern Colorado since 2014. We apply ambient noise correlation techniques to determine temporal changes in seismic velocities in the region. We find no clear correlation between seismic velocity fluctuations and either injection volumes or seismicity patterns. We...
Estimating geomagnetically induced currents in southern Brazil using 3-D Earth resistivity model
Karen V. Espinosa Sarmiento, Antonio L. Padilha, Livia R. Alves, Adam Schultz, Anna Kelbert
2023, Space Weather (21)
Geomagnetically induced currents (GICs) result from the interaction of the time variation of ground magnetic field during a geomagnetic disturbance with the Earth's deep electrical resistivity structure. In this study, we simulate induced GICs in a hypothetical representation of a low-latitude power transmission network located mainly over...
Recent and future declines of a historically widespread pollinator linked to climate, land cover, and pesticides
William Michael Janousek, Margaret R. Douglas, Syd Cannings, Marion Clement, Casey Delphia, Jeffrey G. Everett, Richard G. Hatfield, Douglas A. Keinath, Jonathan B Koch, Lindsie M. McCabe, John Michael Mola, Jane Ogilvie, Imtiaz Rangwala, Leif L Richardson, Ashley T. Rohde, James P. Strange, Lusha M. Tronstad, Tabitha A. Graves
2023, Proceedings of the National Academy of Sciences (120)
The acute decline in global biodiversity includes not only the loss of rare species, but also the rapid collapse of common species across many different taxa. The loss of pollinating insects is of particular concern because of the ecological and economic values these species provide. The western bumble bee (Bombus...
Optimization and application of non-native Phragmites australis transcriptome assemblies
Feng Tao, Chuanzhu Fan, Yimin Liu, Subashini Sivakumar, Kurt P. Kowalski, Edward M Golenberg
2023, PLoS ONE (18)
Phragmites australis (common reed) has a cosmopolitan distribution and has been suggested as a model organism for the study of invasive plant species. In North America, the non-native subspecies (ssp. australis) is widely distributed across the contiguous 48 states in the United States and large parts of Canada....
Damage amplification during repetitive seismic waves in mechanically loaded rocks
Anthony Lamur, Jackie E. Kendrick, Lauren N. Schaefer, Yan Lavallee, Ben M. Kennedy
2023, Scientific Reports (13)
Cycles of stress build-up and release are inherent to tectonically active planets. Such stress oscillations impart strain and damage, prompting mechanically loaded rocks and materials to fail. Here, we investigate, under uniaxial conditions, damage accumulation and weakening caused by time-dependent creep (at 60, 65, and...
Bioenergetics model for the nonnative Redside Shiner
Rachelle Carina Johnson, David Beauchamp, Julian D. Olden
2023, Transactions of the American Fisheries Society (152) 94-113
ObjectiveRedside Shiner Richardsonius balteatus has expanded from its native range in the Pacific Northwest region of North America to establish populations in six other western states. This expansion has fueled concerns regarding competition between Redside Shiner and native species, including salmonids. We developed a bioenergetic model for Redside Shiner,...
Habitat selection of a migratory freshwater fish in response to seasonal hypoxia as revealed by acoustic telemetry
Richard Kraus, H. Andrew Cook, Matthew D. Faust, Joseph Schmitt, Mark D. Rowe, Christopher S. Vandergoot
2023, Journal of Great Lakes Research (49) 1004-1014
Adaptive efforts to achieve water quality objectives by modifying nutrient loading can have attendant impacts on fish habitats and fisheries. Thus, coordinating fishery and water quality management depends on knowledge of fish behavioral responses to habitat change. This study combined acoustic telemetry of fish with water quality modeling to understand...
