Pockmarks offshore Big Sur, California provide evidence for recurrent, regional, and unconfined sediment gravity flows
E. Lundsten, Charles K. Paull, R. Gwiazda, S. Dobbs, D.W. Caress, Linda A. Kuhnz, M. Walton, N. Nieminski, Mary McGann, Thomas Lorenson, Guy R. Cochrane, Jason A. Addison
2024, Journal of Geophysical Research, Earth Surface (129)
Recent surface ship multibeam surveys of the Sur Pockmark Field, offshore Central California, reveal >5,000 pockmarks in an area that is slated to host a wind farm, between 500- and 1,500-m water depth. Extensive fieldwork was conducted to characterize the seafloor environment and its recent geologic history,...
Effects of episodic stream dewatering on brook trout spatial population structure
Nathaniel P. Hitt, Karli M. Rogers, Karmann G. Kessler, Martin A. Briggs, Jennifer H. Fair, Andrew C. Dolloff
2024, Freshwater Biology (69) 1027-1041
Stream dewatering is expected to become more prevalent due to climate change, and we explored the potential consequences for brook trout (Salvelinus fontinalis) within a temperate forest ecosystem in eastern North America.We estimated fish density within stream pools (n = 386) from electrofishing surveys over 10 years...
The dominance and growth of shallow groundwater resources in continuous permafrost environments
Joshua C. Koch, Craig T. Connolly, Carson Baughman, Marisa Repasch, Heather Best, Andrew G. Hunt
2024, Proceedings of the National Academy of Sciences (121)
Water is a limited resource in Arctic watersheds with continuous permafrost because freezing conditions in winter and the impermeability of permafrost limit storage and connectivity between surface water and deep groundwater. However, groundwater can still be an important source of surface water in such settings, feeding springs...
Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams
Jonathan A. O’Donnell, Michael P. Carey, Joshua C. Koch, Carson Baughman, Kenneth Hill, Christian E. Zimmerman, Patrick F. Sullivan, Roman J. Dial, Timothy J. Lyons, David J. Cooper, Brett A. Poulin
2024, Communications Earth and Environment (5)
Climate change in the Arctic is altering watershed hydrologic processes and biogeochemistry. Here, we present an emergent threat to Arctic watersheds based on observations from 75 streams in Alaska’s Brooks Range that recently turned orange, reflecting increased loading of iron and toxic metals. Using remote sensing,...
Geographic drivers of mercury entry into aquatic food webs revealed by mercury stable isotopes in dragonfly larvae
Sarah E. Janssen, Christopher James Kotalik, James Willacker, Michael T. Tate, Colleen M Flanagan-Pritz, Sarah Nelson, David P. Krabbenhoft, David Walters, Collin A. Eagles-Smith
2024, Environmental Science and Technology (58) 13444-13455
Atmospheric mercury (Hg) emissions and subsequent transport and deposition are major concerns within protected lands, including national parks, where Hg can bioaccumulate to levels detrimental to human and wildlife health. Despite this risk to biological resources, there is limited understanding of the relative importance of different Hg sources and delivery...
To mix or not to mix: Details of magma storage, recharge, and remobilization during the Pacheco stage at Misti Volcano, Peru (≤21–2 ka)
Marie K. Takach, Frank J. Tepley, Christopher Harpel, Rigoberto Aguilar, Marco Rivera
2024, Journal of Petrology (65)
We investigate ten of the most recent tephra-fall deposits emplaced between ≤21–2 ka from the Pacheco stage of Misti volcano, Peru, to elucidate magma dynamics and explosive eruption triggers related to magma storage, recharge, and remobilization. Whole-rock, glass, and mineral textures and compositions indicate the presence of broadly felsic, intermediate,...
Greenness and actual evapotranspiration in the unrestored riparian corridor of the Colorado River Delta in response to in-channel water deliveries in 2021 and 2022
Pamela L. Nagler, Ibrahima Sall, Martha Gomez-Sapiens, Armando Barreto-Muñoz, Christopher J. Jarchow, Karl W. Flessa, Kamel Didan
2024, Remote Sensing (16)
Natural resource managers may utilize remotely sensed data to monitor vegetation within their decision-making frameworks for improving habitats. Under binational agreements between the United States and Mexico, seven reaches were targeted for riparian habitat enhancement. Monitoring was carried out using Landsat 8 16-day intervals of the two-band enhanced vegetation index...
Debris-flow entrainment modelling under climate change: Considering antecedent moisture conditions along the flow path
Anna Konz, Jacob Hirschberg, Brian McArdell, Benjamin B. Mirus, Tjalling de Haas, Perry Bartelt, Peter Molnar
2024, Earth Surface Processes and Landforms (49) 2950-2964
Debris-flow volumes can increase along their flow path by entraining sediment stored in the channel bed and banks, thus also increasing hazard potential. Theoretical considerations, laboratory experiments and field investigations all indicate that the saturation conditions of the sediment along the flow path can...
Reservoir evolution, downstream sediment transport, downstream channel change, and synthesis of geomorphic responses of Fall Creek and Middle Fork Willamette River to water years 2012–18 streambed drawdowns at Fall Creek Lake, Oregon
Mackenzie K. Keith, J. Rose Wallick, Liam N. Schenk, Laurel E. Stratton Garvin, Gabriel W. Gordon, Heather M. Bragg
2024, Scientific Investigations Report 2023-5135
Executive SummaryChapter A. IntroductionFall Creek Dam impounds Fall Creek Lake, a 10-kilometer-long reservoir in western Oregon and is operated by the U.S. Army Corps of Engineers (USACE) primarily for flood-risk management (or flood control) in late autumn through early spring months, as well as for water quality, irrigation, recreation, and...
Sight and blindness: The relationship between ostracod eyes, water depth, and light availability in the Arctic Ocean
Jingwen Zhang, Moriaki Yasuhara, Chih-Lin Wei, Skye Yunshu Tian, Kyawt K. T. Aye, Laura Gemery, Thomas M. Cronin, Peter Frenzel, David J. Horne
2024, Limnology and Oceanography (69) 1418-1428
Eye loss has been a long-standing interest in evolutionary biology. Many organisms that inhabit environments without light penetration, for example the deep sea, exhibit eye loss and thus become blind. However, water-depth distribution of eyes in marine organisms is poorly understood. Ostracods are widely distributed crustaceans, and many sighted marine...
Evaporation from the interior of Lake Okeechobee—A large freshwater lake in Florida, 2013–16
W. Barclay Shoemaker, Qinglong Wu
2024, Scientific Investigations Report 2024-5040
In 2012, a platform at the approximate center of Lake Okeechobee in central Florida was instrumented to continuously measure evaporation with the Bowen-ratio energy-budget method as part of a long-term partnership between the South Florida Water Management District and the U.S. Geological Survey. The primary goal for the study was...
Status and understanding of groundwater quality in the Mojave Basin Domestic-Supply Aquifer study unit, 2018—California GAMA Priority Basin Project
Krishangi D. Groover, Miranda S. Fram, Zeno F. Levy
2024, Scientific Investigations Report 2024-5019
Groundwater quality in the western part of the Mojave Desert in San Bernardino County, California, was investigated in 2018 as part of the California State Water Resources Control Board Groundwater Ambient Monitoring and Assessment Program Priority Basin Project. The Mojave Basin Domestic-Supply Aquifer study unit (MOBS) region was divided into...
Infectivity of wild-bird origin Influenza A viruses in Minnesota wetlands across seasons
Rebecca L. Poulson, Andrew B. Reeves, Christina Ahlstrom, Laura Celeste Scott, Laura E. Hubbard, Alinde Fojtik, Deborah L. Carter, David E. Stallknecht, Andrew M. Ramey
2024, Pathogens (13)
The environmental tenacity of influenza A viruses (IAVs) in the environment likely plays a role in their transmission; IAVs are able to remain infectious in aquatic habitats and may have the capacity to seed outbreaks when susceptible wild bird hosts utilize these same environments months or even seasons later....
Modeling forest snow using relative canopy structure metrics
C. David Moeser, Graham A. Sexstone, Jake Kurzweil
2024, Water (16)
Snow and watershed models typically do not account for forest structure and shading; therefore, they display substantial uncertainty when attempting to account for forest change or when comparing hydrological response between forests with varying characteristics. This study collected snow water equivalent (SWE) measurements in a snow-dominated forest in Colorado,...
A two-dimensional, reach-scale implementation of space-time image velocimetry (STIV) and comparison to particle image velocimetry (PIV)
Carl J. Legleiter, Paul J. Kinzel, Frank L. Engel, Lee R. Harrison, Gregory Hewitt
2024, Earth Surface Processes and Landforms (10) 3093-3114
Image-based algorithms have become a powerful tool for estimating flow velocities in rivers. In this study, we generalize the space-time image velocimetry (STIV) framework for reach-scale application rather than along a cross section. The new algorithm provides information on both the magnitude and orientation...
Duckling survival increased with availability of flooded wetland habitat and decreased with salinity concentrations in a brackish marsh
Sarah H. Peterson, Joshua T. Ackerman, C. Alex Hartman, Andrew C. Greenawalt, Michael L. Casazza, Mark P. Herzog
2024, Ornithological Applications (126)
Waterfowl population recruitment is sensitive to duckling survival. We quantified predator types and survival rates for Anas platyrhynchos (Mallard) and Mareca strepera (Gadwall) ducklings in one of the largest brackish water marshes in western North America (Suisun Marsh, California) using 556 radio-tagged ducklings from 284 broods tracked during the 2016 to 2019 breeding seasons....
Monitoring and assessment of urban stormwater best management practices at selected Chicago public schools in Chicago, Illinois, from September 1, 2016, to July 1, 2017
Clinton R. Bailey, Carolyn M. Soderstrom, James J. Duncker
2024, Scientific Investigations Report 2024-5036
The Space to Grow program helps transform aging and neglected schoolyards of Chicago Public Schools into outdoor community spaces with the goal of promoting health and learning while addressing neighborhood flooding issues. Virgil I. Grissom Elementary School and Donald L. Morrill Math and Science School were selected in 2014 for...
Vulnerability assessment of groundwater influenced ecosystems in the Northeastern United States
Shawn D. Snyder, Cyndy Loftin, Andrew S. Reeve
2024, Water (16)
Groundwater-influenced ecosystems (GIEs) are increasingly vulnerable due to groundwater extraction, land-use practices, and climate change. These ecosystems receive groundwater inflow as a portion of their baseflow or water budget, which can maintain water levels, water temperature, and chemistry necessary to sustain the biodiversity that they support. In some systems (e.g.,...
Anaerobic biodegradation of perfluorooctane sulfonate (PFOS) and microbial community composition in soil amended with a dechlorinating culture and chlorinated solvents
Michelle M. Lorah, Ke He, Lee Blaney, Denise M. Akob, Cassandra Rashan Harris, Andrea K. Tokranov, Zachary Ryan Hopkins, Brian Shedd
2024, Science of the Total Environment (932)
Perfluorooctane sulfonate (PFOS), one of the most frequently detected per- and polyfluoroalkyl substances (PFAS) occurring in soil, surface water, and groundwater near sites contaminated with aqueous film-forming foam (AFFF), has proven to be recalcitrant to many destructive remedies, including chemical oxidation. We investigated the potential...
Local environmental conditions structured discrete fish assemblages in Arctic lagoons
Sarah M. Laske, Vanessa R. von Biela, Ashley E. Stanek, Kenneth H. Dunton
2024, Polar Biology (47) 551-568
Rapid changes in sea ice extent and changes in freshwater inputs from land are rapidly changing the nature of Arctic estuarine ecosystems. In the Beaufort Sea, these nearshore habitats are known for their high productivity and mix of marine resident and diadromous fishes that have great...
How low is too low? Partnering with stakeholders and managers to define ecologically based low-flow thresholds in a perennial temperate river
Laura Rack, Mary Freeman, Ben N. Emanuel, Laura S. Craig, Stephen W. Golladay, Carol Yang, Seth J. Wenger
2024, River Research and Applications (40) 1393-1416
Managing aquatic ecosystems for people and nature can be improved by collaboration among scientists, managers, decision-makers, and other stakeholders. Many collaborative and interdisciplinary approaches have been developed to address the management of freshwater ecosystems; however, there are still barriers to overcome. We worked as...
Automated Cropland Fallow Algorithm (ACFA) for the Northern Great Plains of USA
Adam Oliphant, Prasad Thenkabail, Pardhasaradhi Teluguntla, Itiya Aneece, Daniel Foley, Richard L. McCormick
2024, International Journal of Digital Earth (17)
Cropland fallowing is choosing not to plant a crop during a season when a crop is normally planted. It is an important component of many crop rotations and can improve soil moisture and health. Knowing which fields are fallow is critical to assess crop productivity and crop water...
Influence of four veterinary antibiotics on constructed treatment wetland nitrogen transformation
Matthew V. Russell, Tiffany L. Messer, Deborah A. Repert, Richard L. Smith, Shannon Bartelt-Hunt, Daniel D. Snow, Ariel Reed
2024, Toxics (12)
The use of wetlands as a treatment approach for nitrogen in runoff is a common practice in agroecosystems. However, nitrate is not the sole constituent present in agricultural runoff and other biologically active contaminants have the potential to affect nitrate removal efficiency. In this study, the impacts of the combined...
Potential climate and human water-use effects on water-quality trends in a semiarid, western U.S. watershed: Fountain Creek, Colorado, USA
Carleton R. Bern, Manya Helene Ruckhaus, Erin K. Hennessy
2024, Water (16)
Nutrients, total dissolved solids (TDS), and trace elements affect the suitability of water for human and natural needs. Here, trends in such water-quality constituents are analyzed for 1999–2022 for eight nested monitoring sites in the 24,000 km2 Fountain Creek watershed in Colorado, USA, by using the weighted regressions on time,...
Ion exchange processes for CO2 mineralization using industrial waste streams: Pilot plant demonstration and life cycle assessment
Steven Bustillos, Mario Christofides, Bonnie McDevitt, Madalyn S. Blondes, Ryan J. McAleer, Aaron M. Jubb, Bu Wang, Gaurav Sant, Dante Simonetti
2024, Chemistry Select (9)
An attractive technique for removing CO2 from the environment is sequestration within stable carbonate solids (e. g., calcite). However, continuous addition of alkalinity is required to achieve favorable conditions for carbonate precipitation (pH>8) from aqueous streams containing dissolved CO2 (pH<4.5) and Ca2+ ions. In this study, a pH-swing process...
