Nontarget effects of pre-emergent herbicides and a bioherbicide on soil resources, processes, and communities
Brynne E. Lazarus, Matthew Germino, Marie-Anne de Graaff
2024, Restoration Ecology (32)
Community-type conversions, such as replacement of perennials by exotic annual grasses in semiarid desert communities, are occurring due to plant invasions that often create positive plant–soil feedbacks, which favor invaders and make restoration of native perennials difficult. Exotic annual grass control measures, such as...
Climate-driven increases in stream metal concentrations in mineralized watersheds throughout the Colorado Rocky Mountains, USA
Andrew H. Manning, Tanya N. Petach, Robert L. Runkel, Diane M. McKnight
2024, Water Resources Research (60)
Increasing stream metal concentrations apparently caused by climate warming have been reported for a small number of mountain watersheds containing hydrothermally altered bedrock with abundant sulfide minerals (mineralized watersheds). Such increases are concerning and could negatively impact downstream ecosystem health, water resources, and mine-site remediation efforts. However,...
Paleogene Earth perturbations in the US Atlantic Coastal Plain (PEP-US): Coring transects of hyperthermals to understand past carbon injections and ecosystem responses
Marci M. Robinson, Kenneth Miller, Tali Babila, Tim J Bralower, Jim Browning, Marlow Cramwinckel, Monika Doubrawa, Gavin L Foster, Megan Fung, Sean D. Kinney, Maria Makarova, Pete McLaughlin, Paul Pearson, Ursula Rohl, Morgan Schaller, Jean Self-Trail, Appy Sluijs, Thomas Westerhold, James R. Wright, James Zachos
2024, Scientific Drilling (33) 47-65
The release of over 4500 Gt (gigatonnes) of carbon at the Paleocene–Eocene boundary provides the closest geological analog to modern anthropogenic CO2 emissions. The cause(s) of and responses to the resulting Paleocene–Eocene Thermal Maximum (PETM) and attendant carbon isotopic excursion (CIE) remain enigmatic and intriguing...
Recent advances in characterizing the crustal stress field and future applications of stress data: Perspectives from North America
Jens-Erik Lundstern
2024, Geological Society, London, Special Publications (546)
The stress field controls patterns of crustal deformation, including which faults are likeliest to cause earthquakes or transmit fluids. Since the 1950s, maps of maximum horizontal stress (SHmax) orientations have advanced dramatically, and the style of faulting (relative principal stress magnitudes) has recently been mapped in some...
Current and projected flood exposure for Alaska coastal communities
Richard Michael Buzard, Christopher V. Maio, Li H. Erikson, Jacquelyn R. Overbeck, Nicole E. M. Kinsman, Benjamin M. Jones
2024, Scientific Reports (14)
Globally, coastal communities experience flood hazards that are projected to worsen from climate change and sea level rise. The 100-year floodplain or record flood are commonly used to identify risk areas for planning purposes. Remote communities often lack measured flood elevations and require innovative approaches to...
Land-use and land-cover change in the Lower Rio Grande Ecoregions, Texas, 2001–2011
Mark A. Drummond, Michael P. Stier, Jamie L. McBeth
2024, Data Report 1185
Urban growth and other land-use changes were examined in the Lower Rio Grande Valley and Alluvial Floodplain ecoregions in Texas, along the U.S.-Mexico border. The analysis focused on understanding the types and causes of land change as well as the recovery of natural land-cover types between years 2001 and 2011....
Assessing spatial variability of nutrients, phytoplankton, and related water-quality constituents in the California Sacramento–San Joaquin Delta at the landscape scale—2018 high resolution mapping surveys
Brian A. Bergamaschi, Tamara E. C. Kraus, Bryan D. Downing, Elizabeth B. Stumpner, Katy O'Donnell, Jeffrey A. Hansen, Jeniffer Soto Perez, Emily T. Richardson, Angela M. Hansen, Alan Gelber
2024, Scientific Investigations Report 2023-5060
Executive Summary This study examined the abundance and distribution of nutrients and phytoplankton in the tidal aquatic environments of the Sacramento–San Joaquin Delta (Delta) and Suisun Bay, comprising three spatial surveys conducted in May, July, and October of 2018 that used continuous underway high frequency sampling and measurements onboard a...
Fishes move to transient local refuges, not persistent landscape refuges during river drying experiment
Thomas P Archdeacon, Eric J. Gonzales, Charles Yackulic
2024, Freshwater Biology (69) 792-808
Anthropogenically driven flow intermittency is increasing in freshwater streams, with important implications for the management and conservation of aquatic ecosystems. Because most freshwater fishes are mobile, they are expected to emigrate from intermittent reaches, but this may not be true in streams transitioning from perennial to intermittent. Here, we...
A Robot Operating System (ROS) package for mapping flow fields in rivers via Particle Image Velocimetry (PIV)
Carl J. Legleiter, Michael Dille
2024, Software X (26)
Non-contact, remote sensing approaches to measuring flow velocities in river channels are widely used, but typical workflows involve acquiring images in the field and then processing data later in the office. To reduce latency between acquisition and output, with the ultimate goal of enabling real-time image velocimetry, we developed a...
Estimating migration timing and abundance in partial migratory systems by integrating continuous antenna detections with physical captures
Maria C. Dzul, William L. Kendall, Charles Yackulic, D.R. Van Haverbeke, P. Mackinnon, K. Young, M. Pillow, Joseph E Thomas
2024, Journal of Animal Ecology (93) 796-811
Many populations migrate between two different habitats (e.g. wintering/foraging to breeding area, mainstem–tributary, river–lake, river–ocean, river–side channel) as part of their life history. Detection technologies, such as passive integrated transponder (PIT) antennas or sonic receivers, can be placed at boundaries between habitats (e.g. near the confluence of rivers) to...
Triangle Area Water Supply Monitoring Project, North Carolina—Overview of hydrologic and water-quality monitoring activities and data quality assurance
J.C. Diaz, Rosemary Margaret Fanelli
2024, Open-File Report 2024-1003
Surface-water supplies are important sources of drinking water for residents in the Triangle area of North Carolina, which is located within the upper Cape Fear and Neuse River Basins. Since 1988, the U.S. Geological Survey and a consortium of local governments have participated in a cooperative effort, known as the...
Phytoplankton, taste-and-odor compounds, and cyanotoxin occurrence in four water-supply reservoirs in the Triangle area of North Carolina, April–October 2014
Celeste A. Journey, Anna M. McKee, Jessica C. Diaz
2024, Scientific Investigations Report 2024-5001
Prior to 2014, local utilities and State agencies monitored for cyanotoxins and taste-and-odor (T&O) compounds and reported occasional detections in three water-supply reservoirs in Wake County, North Carolina. Comparable data for cyanotoxins and T&O compounds were lacking for other water-supply reservoirs in the Triangle area of North Carolina. This report...
Cross-scale analysis reveals interacting predictors of annual and perennial cover in Northern Great Basin rangelands
Madelon Florence Case, Kirk W. Davies, Chad S. Boyd, Lina Aoyama, Joanna Merson, Calvin Penkauskas, Lauren M. Hallett
2024, Ecological Applications (0)
Exotic annual grass invasion is a widespread threat to the integrity of sagebrush ecosystems in Western North America. Although many predictors of annual grass prevalence and native perennial vegetation have been identified, there remains substantial uncertainty about how regional-scale and local-scale predictors interact to...
Design and calibration of a nitrate decision support tool for groundwater wells in Wisconsin, USA
Paul F. Juckem, Nicholas Corson-Dosch, Laura A. Schachter, Christopher Green, Kelsie M. Ferin, Eric G. Booth, Christopher J. Kucharik, Brian P. Austin, Leon J. Kauffman
2024, Environmental Modeling and Software, (176)
This paper describes development of a nitrate decision support tool for groundwater wells (GW-NDST) that combines nitrate leaching and groundwater lag-times to compute well concentrations. The GW-NDST uses output from support models that simulate leached nitrate, groundwater age distributions, and...
Modeling the potential spread of the non-native regal demoiselle, Neopomacentrus cyanomos, in the western Atlantic
Melanie M Esch, Catherine S. Jarnevich, Nuno Simoes, Timothy R McClanahan, Alastair R Harborne
2024, Coral Reefs (43) 641-653
Predicting the potential distribution of a non-native species can assist management efforts to mitigate impacts on recipient ecosystems. However, such predictions are lacking for marine species, such as the non-native regal demoiselle, Neopomacentrus cyanomos, that is currently expanding its distribution in the western Atlantic. We used correlative...
Simulating past and future fire impacts on Mediterranean ecosystems
Christoph Schwörer, César Morales-Molino, Erika Gobet, Paul D. Henne, Salvatore Pasta, Tiziana Pedrotta, Jacqueline F. N. van Leeuwen, Boris Vannière, Willy Tinner
2024, Journal of Ecology (112) 954-970
Worldwide, large wildfires are becoming increasingly common, leading to economic damages and threatening ecosystems and human health. Under future climate change, more frequent fire disturbance may push ecosystems into non-forested alternative stable states. Fire-prone ecosystems such as those in the Mediterranean Basin are expected to be particularly vulnerable, but...
The roles of diet and habitat use in pesticide bioaccumulation by juvenile Chinook Salmon: Insights from stable isotopes and fatty acid biomarkers
Sara E. Anzalone, Neil W. Fuller, Kara E. Huff Hartz, Gregory W. Whitledge, Jason Tyler Magnuson, Daniel Schlenk, Shawn Acuña, Matt R. Whiles, Michael J. Lydy
2024, Archives of Environmental Contamination and Toxicology (86) 234-248
Stable isotopes (SI) and fatty acid (FA) biomarkers can provide insights regarding trophic pathways and habitats associated with contaminant bioaccumulation. We assessed relationships between SI and FA biomarkers and published data on concentrations of two pesticides [dichlorodiphenyltrichloroethane and degradation products (DDX) and bifenthrin] in juvenile Chinook...
Clumped isotopes record a glacial-interglacial shift in seasonality of soil carbonate accumulation in the San Luis Valley, southern Rocky Mountains, USA
Adam M. Hudson, Julia R. Kelson, James B. Paces, Chester A. Ruleman, Katharine W. Huntington, Andrew J. Schauer
2024, Geochemistry, Geophysics, Geosystems (25)
Clumped isotope paleothermometry using pedogenic carbonates is a powerful tool for investigating past climate changes. However, location-specific seasonal patterns of precipitation and soil moisture cause systematic biases in the temperatures they record, hampering comparison of data across large areas or differing climate states. To account for biases, more systematic studies...
Potential impacts of an autumn oil spill on polar bears summering on land in northern Alaska
Ryan H. Wilson, Deborah French-Mckay, Craig J Perham, Susannah P Woodruff, Todd C. Atwood, George M. Durner
2024, Biological Conservation (292)
Demand for oil and natural gas continues to increase, leading to the development of remote regions where it is riskier to operate. Many of these regions have had limited development, so understanding potential impacts to wildlife could inform management decisions....
Timing and source of recharge to the Columbia River Basalt groundwater system in northeastern Oregon
Henry M. Johnson, Kate E. Ely, Anna-Turi Maher
2024, Groundwater
Recharge to and flow within the Columbia River Basalt Group (CRBG) groundwater flow system of northeastern Oregon were characterized using isotopic, gas, and age-tracer samples from wells completed in basalt, springs, and stream base flow. Most groundwater samples were late-Pleistocene to early-Holocene; median age of...
Evaluation of the characteristics, discharge, and water quality of selected springs at Fort Irwin National Training Center, San Bernardino County, California
Jill N. Densmore, Drew C. Thayer, Meghan C. Dick, Peter W. Swarzenski, Lyndsay B. Ball, Celia Z. Rosecrans, Cordell Johnson
2024, Scientific Investigations Report 2023-5142
Eight springs and seeps at Fort Irwin National Training Center were described and categorized by their general characteristics, discharge, geophysical properties, and water quality between 2015 and 2017. The data collected establish a modern (2017) baseline of hydrologic conditions at the springs. Two types of springs were identified: (1) precipitation-fed...
Genetic Connectivity in the Arizona toad (Anaxyrus microscaphus): implications for conservation of a stream dwelling amphibian in the arid Southwestern U.S.
Sara J. Oyler-McCance, Mason J. Ryan, Brian K. Sullivan, Jennifer A. Fike, Robert S. Cornman, J. T. Giermakowski, Shawna J Zimmerman, R. L. Harrow, S.J. Hedwell, Blake R. Hossack, I. M. Latella, R. E. Lovish, S. Siefken, Brent H. Sigafus, Erin L. Muths
2024, Conservation Genetics (25) 835-848
The Arizona Toad (Anaxyrus microscaphus) is restricted to riverine corridors and adjacent uplands in the arid southwestern United States. As with numerous amphibians worldwide, populations are declining and face various known or suspected threats, from disease to habitat modification resulting from climate change. The Arizona Toad has been petitioned to...
Post-wildfire debris flows
Joseph Gartner, Jason W. Kean, Francis K. Rengers, Scott W. McCoy, Nina S. Oakley, Gary J. Sheridan
2024, Book chapter, Advances in Debris-flow Science and Practice
Post-wildfire debris flows pose severe hazards to communities and infrastructure near and within recently burned mountainous terrain. Intense heat of wildfires changes the runoff characteristics of a watershed by combusting the vegetative canopy, litter, and duff, introducing ash into the soil and creating water repellant soils. Following wildfire, rainfall on...
How diverse is the toolbox? A review of management actions to conserve or restore coregonines
David Bunnell, Orlane Anneville, Jan Baer, Colin Bean, Kimmo Kahlilainen, Alfred Sandstrom, Oliver Selz, Pascal Vonlanthen, Josef Wanzenbock, Brian C. Weidel
2024, International Journal of Limnology (60)
Over the past centuries, coregonines have been exposed to a range of stressors that have led to extinctions, extirpations, and speciation reversals. Given that some populations remain at risk and fishery managers have begun restoring coregonines where they have been extirpated, we reviewed the primary and gray literature to describe...
Paleogene sedimentary basin development in southern Nevada, USA
Jens-Erik Lundstern, Theresa Maude Schwartz, Cameron Mark Mercer, Joseph Colgan, Jeremiah B. Workman, Leah E. Morgan
2024, Lithosphere (2024) 1-34
The cause of the transition from Mesozoic and early Cenozoic crustal shortening to later extension in the western United States is debated. In many parts of the extant Sevier hinterland, now the Basin and Range Province, the sedimentary sections that provide the most direct record of that transition remain poorly...
