Hyperspectral Image Transects during Transient Events in Rivers (HITTER): Framework development and application to a tracer experiment on the Missouri River, USA
Carl J. Legleiter, Victoria Mary Scholl, Brandon James Sansom, Matthew Alexander Burgess
2024, Remote Sensing (19)
Rivers convey a broad range of materials, such as sediment, nutrients, and contaminants. Much of this transport can occur during or immediately after an episodic, pulsed event like a flood or an oil spill. Understanding the flow processes that influence the motion of these substances is important for managing water...
Discerning sediment provenance in the Outer Banks (USA) through detrital zircon geochronology
John W. Counts, Jared T. Gooley, Joshua Long, William H. Craddock, Paul O’Sullivan
2024, Marine Geology (477)
Detrital zircon data from modern barrier island and estuarine environments in the Outer Banks (Atlantic Coast, USA) were statistically compared to sands from nearby rivers to assist in determining source-to-sink pathways. Fluvial samples, collected from near the Fall Line contact...
Oxidation is a potentially significant methane sink in land-terminating glacial runoff
Kristin E. Strock, Rachel Krewson, Nicole M. Hayes, Bridget R. Deemer
2024, Scientific Reports (14)
Globally, aquatic ecosystems are one of the largest but most uncertain sources of methane, a potent greenhouse gas. It is unclear how climate change will affect methane emissions, but recent work suggests that glacial systems, which are melting faster with climate change, may be an important...
Challenges and future directions in quantifying terrestrial evapotranspiration
K. Yi, Gabriel B. Senay, Jousha B. Fisher, Lixin Wang, Kosana Suvocarev, Housen Chu, Georgianne W. Moore, Kimberly A. Novick, Mallory L. Barnes, Trevor F. Keenan, Kanishka Mallick, Xiangzhong Luo, Justine E.C. Missik, Kyle B. Delwiche, Jacob A. Nelson, Stephen P. Good, Xiangming Xiao, Steven A. Kannenberg, Arman Ahmadi, Tianxin Wang, Gil Bohrer, Marcy E. Litvak, David E. Reed, A. Christopher Oishi, Margaret S. Torn, Dennis Baldocchi
2024, Water Resources Research (60)
Terrestrial evapotranspiration is the second-largest component of the land water cycle, linking the water, energy, and carbon cycles and influencing the productivity and health of ecosystems. The dynamics of ET across a spectrum of spatiotemporal scales and their controls remain an active focus of research across different science disciplines. Here,...
Body size and early marine conditions drive changes in Chinook salmon productivity across northern latitude ecosystems
Megan L. Feddern, Rebecca Shaftel, Erik R. Schoen, Curry J. Cunningham, Brendan M. Connors, Benjamin A. Staton, Al von Finster, Zachary Liller, Vanessa R. von Biela, Katherine G. Howard
2024, Global Change Biology (30)
Disentangling the influences of climate change from other stressors affecting the population dynamics of aquatic species is particularly pressing for northern latitude ecosystems, where climate-driven warming is occurring faster than the global average. Chinook salmon (Oncorhynchus tshawytscha) in the Yukon-Kuskokwim (YK) region occupy the...
Dynamic water-quality responses to wildfire in Colorado
David W. Clow, Garrett Alexander Akie, Sheila F. Murphy, Evan J. Gohring
2024, Hydrological Processes (38)
In 2020, Colorado experienced the most severe wildfire season in recorded history, with wildfires burning 625 357 acres across the state. Two of the largest fires burned parts of Rocky Mountain National Park (RMNP), and a study was initiated to address concerns about potential effects...
Effects of initial vegetation heterogeneity on competition of submersed and floating macrophytes
Linhao Xu, Don DeAngelis
2024, Mathematical Biosciences and Engineering (21) 7194-7210
Non-spatial models of competition between floating aquatic vegetation (FAV) and submersed aquatic vegetation (SAV) predict a stable state of pure SAV at low total available limiting nutrient level, N, a stable state of only FAV for high N, and alternative stable states for intermediate N, as described by an S-shaped bifurcation curve....
Correlation analysis of groundwater and hydrologic data, Kaloko-Honokōhau National Historical Park, Hawai‘i
Brytne K. Okuhata, Delwyn S. Oki
2024, Scientific Investigations Report 2024-5084
Designated in 1978, Kaloko-Honokōhau National Historical Park is located on the west coast of the Island of Hawaiʻi. The Kaloko-Honokōhau National Historical Park encompasses about 1,200 acres of coastal land and nearshore ecosystems, which include wetlands, anchialine pools (landlocked bodies of brackish water with hydrologic connections to the ocean), fishponds,...
Historical insights, current challenges: Tracking marine biodiversity in an urban harbor ecosystem in the face of climate change
Alysha B. Putnam, Sarah C. Endyke, Ally Rose Jones, Lucy A.D. Lockwood, Justin Taylor, Marc Albert, Michelle Staudinger
2024, Marine Biodiversity (54)
The Boston Harbor Islands is the only coastal drumlin archipelago in the USA, featuring a distinctive and uncommon geological intertidal habitat known as mixed coarse substrate, which supports a range of coastal species and ecological processes. Recently designated as one of America’s 11 most endangered historic places due to climate...
Distribution and trends of endemic Hawaiian waterbirds, 1986–2023
P. Marcos Gorresen, Richard J. Camp, Eben H. Paxton
2024, Technical Report HCSU-113
This study updates the status assessment of four endemic endangered Hawaiian waterbird species—ae‘o (Hawaiian stilt, Himantopus mexicanus knudseni), ‘alae ke‘oke‘o (Hawaiian coot, Fulica alai), ‘alae ‘ula (Hawaiian gallinule, Gallinula galeata sandvicensis), and koloa maoli (Hawaiian duck, Anas wyvilliana)—from 1986 to 2016 by incorporating new data from 2017–2023. State-space models, which...
Temperature-driven convergence and divergence of ecohydrological dynamics in the ecosystems of a sky island mountain range
M.D. Petrie, John B. Bradford, Daniel Rodolphe Schlaepfer
2024, Ecohydrology (17)
Forest and woodland decline is predicted to be increasingly influenced by meteorological variation and climate change in the future. By determining how meteorological variation leads to similar versus differing ecohydrological dynamics of forest and woodland ecosystems, we can gain insight on how future climate-driven declines may be realized. We characterized...
Applying portfolio theory to benefit endangered amphibians in coastal wetlands threatened by climate change, high uncertainty, and significant investment risk
Mitchell J. Eaton, Adam Terando, Jaime A. Collazo
2024, Frontiers in Conservation Science (5)
The challenge of selecting strategies to adapt to climate change is complicated by the presence of irreducible uncertainties regarding future conditions. Decisions regarding long-term investments in conservation actions contain significant risk of failure due to these inherent uncertainties. To address this challenge, decision makers need an arsenal of sophisticated...
Pesticide occurrence in shallow groundwater in three regions of agricultural land use: Baldwin County, the Wiregrass region, and the Tennessee River valley region of Alabama, 2009–20
Amy C. Gill
2024, Scientific Investigations Report 2024-5069
As part of a cooperative investigation between the U.S. Geological Survey and the Alabama Department of Agriculture and Industries, a network of 22 groundwater wells were sampled from 2014 through 2020 for about 230 pesticide and pesticide degradate compounds. Wells were located in three regions of intensive agricultural land use...
Seismic techniques and suggested instrumentation to monitor volcanoes
Weston A. Thelen, John J. Lyons, Aaron G. Wech, Seth C. Moran, Matthew M. Haney, Ashton F. Flinders
2024, Scientific Investigations Report 2024-5062-B
IntroductionChanges in the pressure or location of magma can stress or break surrounding rocks and trigger flow of nearby waters and gases, causing seismic signals, such as discrete earthquakes and tremor. These phenomena are types of seismic unrest that commonly precede eruption and can be used to forecast volcanic activity....
Projecting mangrove forest resilience to sea-level rise on a Pacific Island: Species dynamics and ecological thresholds
Kevin J. Buffington, Joel A. Carr, Richard Mackenzie, Maybeleen Apwong, Ken Krauss, Karen M. Thorne
2024, Estuaries and Coasts (47) 2174-2189
Mangroves can increase their elevation relative to tidal flooding through biogeomorphic feedbacks but can submerge if rates of sea-level rise are too great. There is an urgent need to understand the vulnerability of mangroves to sea-level rise so local communities and resource managers can implement and prioritize actions. The need...
Special topic—Boreholes
Shaul Hurwitz, Jacob B. Lowenstern
2024, Scientific Investigations Report 2024-5062-K
IntroductionInstallation of instrument packages in deep (several hundred to several thousand meters) boreholes near volcanoes is relatively expensive (a few million to tens of millions of U.S. dollars), but can provide a low-noise, high-quality source of geophysical (seismic, strain, tilt, and pore pressure), physical (temperature and water level), and geochemical...
Monitoring marine eruptions
Gabrielle Tepp
2024, Scientific Investigations Report 2024-5062-I
IntroductionSubmarine volcanoes produce much of the same seismicity and eruptive activity as subaerial volcanoes and can pose hazards to society. Although they can be monitored with similar techniques and methods as described in other chapters of this volume, their submerged location brings unique challenges. This chapter addresses these challenges and...
Streams, springs, and volcanic lakes for volcano monitoring
Steven E. Ingebritsen, Shaul Hurwitz
2024, Scientific Investigations Report 2024-5062-F
IntroductionVolcanic unrest can trigger appreciable change to surface waters such as streams, springs, and volcanic lakes. Magma degassing produces gases and soluble salts that are absorbed into groundwater that feeds streams and lakes. As magma ascends, the amount of heat and degassing will increase, and so will any related geochemical...
Volcanic gas monitoring
Jennifer L. Lewicki, Christoph Kern, Peter J. Kelly, Patricia A. Nadeau, Tamar Elias, Laura E. Clor
2024, Scientific Investigations Report 2024-5062-E
IntroductionAs magma rises through the crust, decreasing pressure conditions allow volatiles to exsolve from the magma. These volatiles then migrate upward through the crust, where they can be stored at shallower levels or escape to the atmosphere. Rising magma also heats rock masses beneath volcanic centers, causing water in shallow...
Mixed contaminant exposure in tapwater and the potential implications for human-health in disadvantaged communities in California
Kelly Smalling, Kristin M. Romanok, Paul M. Bradley, Michelle L. Hladik, James L. Gray, Leslie K. Kanagy, R. Blaine McCleskey, Diana A. Stavreva, Annika K. Alexander-Ozinskas, Jesus Alonso, Wendy Avila, Sara E. Breitmeyer, Roberto Bustillo, Stephanie E. Gordon, Gordon L. Hager, Rena R. Jones, Dana W. Kolpin, Seth Newton, Peggy Reynolds, John Sloop, Andria Ventura, Julie Von Behren, Mary H. Ward, Gina M. Solomon
2024, Water Research (267)
Water is an increasingly precious resource in California as years of drought, climate change, pollution, as well as an expanding population have all stressed the state's drinking water supplies. Currently, there are increasing concerns about whether regulated and unregulated contaminants in drinking water are linked to a variety of human-health...
A data exchange standard for wadeable stream habitat monitoring data
Rebecca A. Scully, Erin K. Dlabola, Jennifer M. Bayer, Emily Heaston, Jennifer Courtwright, Marcia N. Snyder, David Hockman-Wert, W. Carl Saunders, Karen A. Blocksom, Christine Hirsch, Scott W. Miller
2024, Techniques and Methods 16-B2
Data from wadeable streams collected by monitoring programs are used to assess watershed condition status and trends. Federally managed programs collect a suite of similar habitat measurements using compatible methods and produce individual program datasets for their prescribed geographic and temporal range. We identified four programs that produce similar data:...
Editorial: From cold seeps to hydrothermal vents: Geology, chemistry, microbiology, and ecology in marine and coastal environments
Glen T. Snyder, Andrew R. Thurber, Stephanie Dupre, Marcelo Ketzer, Carolyn D. Ruppel
2024, Frontiers in Earth Science (12)
This Research Topic compiles contemporary studies on cold seeps, hydrothermal vents, mud volcanoes, and related seafloor features that are associated with focused fluid emissions and the transfer of carbon, other chemical species, and sometimes heat from the geosphere to the ocean. Because these features sometimes tap fluids and gas...
Dust in the Critical Zone: North American case studies
Janice Brahney, Ruth C. Heindel, Thomas E. Gill, Gregory Carling, Juan M Gonzalez-Olalla, Jenny L. Hand, Derek V. Mallia, Jeffrey S. Munroe, Kevin Perry, Annie L. Putman, S. McKenzie Skiles, Brad R. Adams, Zachary T. Aanderud, Sarah M. Aarons, Daniela Aguirre, Karin Ardon-Dryer, Molly A. Blakowski, Jessie M. Creamean, Diego P. Fernandez, Hosein Foroutan, Cassandra J. Gaston, Maura Hahnenberger, Sebastian W. Hoch, Daniel K. Jones, Kerry E. Kelly, Otto I. Lang, Josh Lemonte, Richard L. Reynolds, Ramesh P. Singh, Mark Sweeney, Thorn K. Merrill
2024, Earth-Science Reviews (258)
The dust cycle facilitates the exchange of particles among Earth's major systems, enabling dust to traverse ecosystems, cross geographic boundaries, and even move uphill against the natural flow of gravity. Dust in the atmosphere is composed of a complex and ever-changing mixture that reflects the evolving human footprint on the...
Quantifying fine sediment infiltration in spawning gravel used by Chinook salmon (Oncorhynchus tshawytscha) in the Sauk River Basin, Washington, 2018–21
Kristin L. Jaeger, Scott W. Anderson, Anya C. Leach, Scott T. Morris
2024, Scientific Investigations Report 2024-5077
Fine sediment can infiltrate into river substrate that salmonid fish species (Oncorhynchus spp.) use to spawn. High levels of sediment infiltration can increase egg-to-fry mortality, which corresponds to the period when salmonids are still residing in the subsurface gravels. This study quantifies fine sediment infiltration of Chinook salmon (Oncorhynchus tshawytscha)...
Comparison of water quality in shallow groundwater near agricultural areas in the Delaware Coastal Plain, 2014 and 2019
Alexander M. Soroka, Betzaida Reyes, Brandon J. Fleming, Michael Brownley
2024, Scientific Investigations Report 2024-5076
The State of Delaware has encouraged agricultural conservation practices to improve nutrient uptake by crops and mitigate nutrient transport to groundwater in the surficial aquifer. To study recent changes in groundwater quality, the U.S. Geological Survey and the Delaware Department of Agriculture (DDA) developed a network of shallow wells near...
