Shoaling wave shape estimates from field observations and derived bedload sediment rates
Tarandeep S. Kalra, Steven E. Suttles, Christopher R. Sherwood, John C. Warner, Alfredo Aretxabaleta, Gibson Robert Scott Leavitt
2022, Journal of Marine Science and Engineering (10)
The shoaling transformation from generally linear deep-water waves to asymmetric shallow-water waves modifies wave shapes and causes near-bed orbital velocities to become asymmetrical, contributing to net sediment transport. In this work, we used two methods to estimate the asymmetric wave shape from data at three sites. The first method converted...
Empirical map-based nonergodic models of site response in the greater Los Angeles area
Grace Alexandra Parker, Annemarie S. Baltay
2022, Bulletin of the Seismological Society of America (112) 1607-1629
We develop empirical estimates of site response at seismic stations in the Los Angeles area using recorded ground motions from 414 M 3–7.3 earthquakes in southern California. The data are from a combination of the Next Generation Attenuation‐West2 project, the 2019 Ridgecrest earthquakes, and about 10,000 newly processed records. We estimate site...
Earthquake-derived seismic velocity changes during the 2018 caldera collapse of Kīlauea volcano
Alicia J. Hotovec-Ellis, Brian Shiro, David R. Shelly, Kyle R. Anderson, Matt Haney, Weston Thelen, Emily K. Montgomery-Brown, Ingrid A. Johanson
2022, Journal of Geophysical Research (127)
The 2018 Kīlauea caldera collapse produced extraordinary sequences of seismicity and deformation, with 62 episodic collapse events which significantly altered the landscape of the summit region. Despite decades of focused scientific studies at Kīlauea, detailed information about the internal structure of the volcano is limited. Recently developed...
Perfluoroalkyl and polyfluoroalkyl substances in groundwater used as a source of drinking water in the eastern United States
Peter B. McMahon, Andrea K. Tokranov, Laura M. Bexfield, Bruce D. Lindsey, Tyler D. Johnson, Melissa A. Lombard, Elise Watson
2022, Environmental Science & Technology (56) 2279-2288
In 2019, 254 samples were collected from five aquifer systems to evaluate per- and polyfluoroalkyl substance (PFAS) occurrence in groundwater used as a source of drinking water in the eastern United States. The samples were analyzed for 24 PFAS, major ions, nutrients, trace elements, dissolved organic carbon (DOC), volatile organic...
Nutrient improvements in Chesapeake Bay: Direct effect of load reductions and implications for coastal management
Rebecca R. Murphy, Jennifer L. D. Keisman, Jon Harcum, Renee Karrh, Michael F. Lane, Elgin S. Perry, Qian Zhang
2022, Environmental Science & Technology (56) 260-270
In Chesapeake Bay in the United States, decades of management efforts have resulted in modest reductions of nutrient loads from the watershed, but corresponding improvements in estuarine water quality have not clearly materialized. Generalized additive models were used to directly link river flows and nutrient loads from the watershed to...
How much marsh restoration is enough to deliver wave attenuation coastal protection benefits?
Katherine A. Castagno, Neil K. Ganju, Michael W. Beck, Alison Bowden, Steven B. Scyphers
2022, Frontiers in Marine Science (8)
As coastal communities grow more vulnerable to sea-level rise and increased storminess, communities have turned to nature-based solutions to bolster coastal resilience and protection. Marshes have significant wave attenuation properties and can play an important role in coastal protection for many communities. Many restoration projects seek to maximize this ecosystem...
Behavioral state-dependent habitat selection and implications for animal translocations
Simona Picardi, Peter S. Coates, Jesse L. Kolar, Shawn T. O’Neil, Steven R. Mathews, David K. Dahlgren
Annabel Smith, editor(s)
2022, Journal of Applied Ecology (59) 624-635
Post-release monitoring of translocated animals is often used to inform future translocation protocols. Quantifying habitat selection of translocated individuals may help identify features that characterize good settlement habitat and thus inform the choice of future release sites. However, translocated animals often undergo post-release behavioural modification, and their habitat selection...
Invasion of Siberian elm (Ulmus pumila) along the South Platte River: The roles of seed source, human influence, and river geomorphology
Lindsay Reynolds, Laura Perry, Patrick B. Shafroth, Gabrielle L. Katz, Andrew S. Norton
2022, Wetlands (42) 1-23
Riparian ecosystems in the western USA have been invaded by non-native woody species deliberately introduced for stream bank stabilization, agricultural windbreaks, and urban shade. Recent work suggests that the non-native tree Ulmus pumila (Siberian elm) is capable of significant spread in western riparian ecosystems, that range infilling is still incomplete, and that...
Daily foraging activity of an imperiled ground squirrel: Effects of hibernation, thermal environment, body condition, and conspecific density
Austin A Z. Allison, Courtney J. Conway
2022, Behavioral Ecology and Sociobiology (76)
Food acquisition is among the most important tasks faced by free-ranging animals. Predation and thermal risks, however, can make foraging a costly endeavor and foraging can preclude other important activities. Moreover, seasonal life cycle events such as hibernation impose energetic thresholds and time constraints on foraging. These factors interact with...
Estimating wolf abundance from cameras
David Edward Ausband, Paul M. Lukacs, Mark A. Hurley, Shane Roberts, Kaitlyn M. Strickfaden, Anna K. Moeller
2022, Ecosphere (13)
Monitoring the abundance of rare carnivores is a daunting task for wildlife biologists. Many carnivore populations persist at relatively low densities, public interest is high, and the need for population estimates is great. Recent advances in trail camera technology provide an unprecedented opportunity for biologists to monitor rare species economically....
Assessment of cereal grain waste densities to aid waterfowl conservation planning in the Klamath Basin
Daniel A. Skalos, Joseph P. Fleskes, Jeffery D. Kohl, Mark P. Herzog, Michael L. Casazza
2022, Journal of Fish and Wildlife Management (13) 3-16
Postharvest waste seed from cereal grains is a major dietary component of waterfowl in the Klamath Basin in northeastern California and southeastern Oregon, a region that plays host to over a million waterfowl annually. Understanding food abundance is critical to local waterfowl management; therefore, we conducted a study in 2008...
Multidisciplinary constraints on the thermal-chemical boundary between Earth's core and mantle
Daniel A. Frost, Margaret Susan Avery, Bruce Buffett, Bethany A. Chidester, Jie Deng, Susannah M. Dorfman, Zhi Li, Lijun Liu, Mingda Lv, Joshua F. Martin
2022, Geochemistry, Geophysics, Geosystems (23)
Heat flux from the core to the mantle provides driving energy for mantle convection thus powering plate tectonics, and contributes a significant fraction of the geothermal heat budget. Indirect estimates of core-mantle boundary heat flow are typically based on petrological evidence of mantle temperature, interpretations of temperatures indicated by seismic...
System characterization report on Planet’s SuperDove
Minsu Kim, Seonkyung Park, Cody Anderson, Gregory L. Stensaas
2022, Open-File Report 2021-1030-F
Executive SummaryThis report addresses system characterization of Planet’s SuperDove and is part of a series of system characterization reports produced and delivered by the U.S. Geological Survey Earth Resources Observation and Science Cal/Val Center of Excellence. These reports present and detail the methodology and procedures for characterization; present technical and...
The role of hydraulic and geomorphic complexity in predicting invasive carp spawning potential: St. Croix River, Minnesota and Wisconsin, United States
Alan Kasprak, P. Ryan Jackson, Evan M. Lindroth, J. William Lund, Jeffrey R. Ziegeweid
2022, PLoS ONE (17)
Since they were first introduced to the United States more than 50 years ago, invasive carp have rapidly colonized rivers of the Mississippi River Basin, with detrimental effects on native aquatic species. Their continued range expansion, and potential for subsequent invasion of the Great Lakes, has led to increased concern...
The occurrence of large floods in the United States in the modern hydroclimate regime: Seasonality, trends, and large-scale climate associations
Mathias Collins, Glenn A. Hodgkins, Stacey A. Archfield, Robert M. Hirsch
2022, Water Resources Research (58)
Many studies investigate river floods by analyzing annual maximum series that record the largest flow of each year, including many within-bank events inconsequential for human communities. Fewer focus on larger floods, especially at the continental scale. Using 473 streamgages across the conterminous United States with near-natural flow from 1966 to...
Silicate volcanism on Europa’s seafloor and implications for habitability
Michael T. Bland, Catherine Elder
2022, Geophysical Research Letters (49)
Habitable ocean environments on Europa require an influx of reactants to maintain chemical disequilibrium. One possible source of reactants is seafloor volcanism. Modeling has shown that dissipation of tidal energy in Europa's asthenosphere can generate melt, but melt formation cannot be equated with volcanism. Melt must also...
Evaluation of electrical and electromagnetic geophysical techniques to inspect earthen dam and levee structures in Arkansas
Ryan F. Adams, Benjamin Miller, Wade Kress, Scott Ikard, Jason D. Payne, Walter Killion
2022, Journal of Environmental and Engineering Geophysics (26) 287-303
Within the state of Arkansas there is an increasing number of aging dams and levees that have little to no documentation concerning their construction or composition. Surface geophysical surveys offer a non-intrusive method for investigating these structures: To describe their lithologic makeup, to evaluate the materials that they were constructed...
Human-in-the-Loop segmentation of earth surface imagery
Daniel D. Buscombe, Evan B. Goldstein, Christopher R. Sherwood, Cameron S Bodine, Jenna A. Brown, Jaycee Favela, Sharon Fitzpatrick, Christine J. Kranenburg, Jin-Si R. Over, Andrew C. Ritchie, Jonathan A. Warrick, Phillipe Alan Wernette
2022, Earth and Space Science (9)
Segmentation, or the classification of pixels (grid cells) in imagery, is ubiquitously applied in the natural sciences. Manual methods are often prohibitively time-consuming, especially those images consisting of small objects and/or significant spatial heterogeneity of colors or textures. Labeling complicated regions of transition that in Earth surface imagery are represented...
Poor relationships between NEON Airborne Observation Platform data and field-based vegetation traits at a mesic grassland
Stephanie Pau, Jesse Nippert, Ryan Slapikas, Daniel Mark Griffith, Seton Bachle, Brent Helliker, Rory O’Connor, William J. Riley, Christopher J. Still, Marissa Zaricor
Elizabeth T. Borer, editor(s)
2022, Ecology (103)
Understanding spatial and temporal variation in plant traits is needed to accurately predict how communities and ecosystems will respond to global change. The National Observatory Ecological Network (NEON) Airborne Observation Platform (AOP) provides hyperspectral images and associated data products at numerous field sites at 1 m spatial resolution, potentially allowing...
Operational assessment tool for forest carbon dynamics for the United States: A new spatially explicit approach linking the LUCAS and CBM-CFS3 models
Benjamin M. Sleeter, Leonardo Frid, Bronwyn Rayfield, Colin Daniel, Zhiliang Zhu, Dave Marvin
2022, Carbon Balance and Management (17)
BackgroundQuantifying the carbon balance of forested ecosystems has been the subject of intense study involving the development of numerous methodological approaches. Forest inventories, processes-based biogeochemical models, and inversion methods have all been used to estimate the contribution of U.S. forests to the global terrestrial carbon sink. However, estimates...
Context-dependent variation in persistence of host populations in the face of disease
Bennett Hardy, Erin L. Muths, David N. Koons
2022, Journal of Animal Ecology (91) 282-286
Research Highlight: Valenzuela-Sánchez, A., Azat, C., Cunningham, A. A., Delgado, S., Bacigalupe, L. D., Beltrand, J., Serrano, J. M., Sentenac, H., Haddow, N., Toledo, V., Schmidt, B. R., & Cayuela, H. (2022). Interpopulation differences in male reproductive effort drive the population dynamics of a...
Quantifying streamflow depletion from groundwater pumping: A practical review of past and emerging approaches for water management
Samuel Zipper, William H. Farmer, Andrea E. Brookfield, Hoori Ajami, Howard W. Reeves, Chloe Wardropper, John C. Hammond, Tom Gleeson, Jillian M. Deines
2022, Journal of the American Water Resources Association (58) 289-312
Groundwater pumping can cause reductions in streamflow (“streamflow depletion”) that must be quantified for conjunctive management of groundwater and surface water resources. However, streamflow depletion cannot be measured directly and is challenging to estimate because pumping impacts are masked by streamflow variability due to other...
Mark-recapture models accurately predict growth trajectories of known-age Muskellunge in Green Bay, Lake Michigan
Robert J. Sheffer, Steven R. Hogler, Daniel A. Isermann
2022, North American Journal of Fisheries Management (42) 410-424
Length-at-age data are commonly used to describe growth of fish, and obtaining these data typically involves estimating ages from calcified structures (e.g., fin spines or rays, otoliths, or cleithra). Verifying the accuracy of age and growth estimates for long-lived fish is often difficult because known-age fish are not available for...
Comment on ‘Evidence for a large strike-slip component during the 1960 Chilean earthquake’ by H. Kanamori, L. Rivera, and S. Lambotte
James C. Savage
2022, Geophysical Journal International (228) 1171-1183
Based on numerous studies of the relevant geodetic data, a low-angle thrusting mechanism has been assigned to the 1960 Chile earthquake. Kanamori, Rivera and Lambotte recently suggested that a component of dextral slip comparable to the thrusting be included in the mechanism to satisfy long-period, teleseismic observations. The absence of...
Health surveillance of a potential bridge host: Pathogen exposure risks posed to avian populations augmented with captive-bred pheasants
Ian Dwight, Peter S. Coates, Simone T. Stoute, Maurice E. Pitesky
2022, Transboundary and Emerging Diseases (69) 1095-1107
Augmentation of wild populations with captive-bred individuals presents an inherent risk of co-introducing novel pathogens to naïve species, but it can be an important tool for supplementing small or declining populations. Game species used for human enterprise and recreation such as the ring-necked pheasant (Phasianus colchicus) are commonly raised in...
