Experimental manipulation of soil-surface albedo alters phenology and growth of Bromus tectorum (cheatgrass)
Toby M. Maxwell, Matthew J. Germino, Seth Romero, Lauren M. Porensky, Dana M. Blumenthal, Cynthia S. Brown, Peter B. Adler
2023, Plant and Soil (487) 325-339
PurposeThe sensitivity of wildland plants to temperature can be directly measured using experimental manipulations of temperature in situ. We show that soil surface temperature and plant density (per square meter) have a significant impact on the germination, growth, and phenology of Bromus tectorum L., cheatgrass, a short-statured invasive winter-annual grass,...
Years of magma intrusion primed Kīlauea Volcano (Hawai'i) for the 2018 eruption: Evidence from olivine diffusion chronometry and monitoring data
Adrien J. Mourey, Tom Shea, Fidel Costa, Brian Shiro, Ryan J. Longman
2023, Bulletin of Volcanology (85)
The mechanisms that led to the exceptionally large Kīlauea 2018 eruption are still poorly understood and actively debated. External processes such as rainfall events or flank sliding have been proposed to play a triggering role. Here, we present field, geophysical, and petrological observations to show that...
Cooperative Fish and Wildlife Research Units Program—2022 year in review
Elise R. Irwin, Donald E. Dennerline, J. Barry Grand, Jonathan R. Mawdsley
2023, Circular 1505
Established in 1935, the CRU program is a unique cooperative partnership among State Fish and Wildlife agencies, host universities, Wildlife Management Institute, U.S. Geological Survey, and the U.S. Fish and Wildlife Service. Designed to meet the scientific needs of natural resource management agencies and to produce trained wildlife management professionals,...
Modeling flow and water quality in reservoir and river reaches of the Mahoning River Basin, Ohio
Annett B. Sullivan, Gabrielle M. Georgetson, Christina E. Urbanczyk, Gabriel W. Gordon, Susan A. Wherry, William B. Long
2023, Scientific Investigations Report 2022-5125
Executive SummaryThe U.S. Army Corps of Engineers (USACE) is considering changes to the management of water surface elevation in four lakes in the Mahoning River Basin. These changes would affect the timing and amounts of water released to the Mahoning River and could affect the water quality of those releases....
Patterns of zero and nonzero counts suggest spatiotemporal distributions, aggregation, and dispersion of invasive carp
Leandro E. Miranda, J. Tompkins, Corey Garland Dunn, J. L. Morris, Matthew C. Combs
2023, Management of Biological Invasions (14) 363-377
Bigheaded carp Hypophthalmichthys spp. are invasive species native to Asia expanding in the Mississippi River Basin in North America. An understanding of spatiotemporal distribution and aggregation of invasive carp is key to establishing when and where to focus surveillance designed to monitor expansion, and to managing harvest programs designed to...
Insights into the metamorphic history and origin of flake graphite mineralization at the Graphite Creek graphite deposit, Seward Peninsula, Alaska, USA
George N.D. Case, Susan M. Karl, Sean P. Regan, Craig A. Johnson, Eric T Ellison, Jonathan Caine, Christopher S. Holm-Denoma, Laura Pianowski, Jeff A. Benowitz
2023, Mineralium Deposita (58) 939-962
Graphite Creek is an unusual flake graphite deposit located on the Seward Peninsula, Alaska, USA. We present field observations, uranium-lead (U–Pb) monazite and titanite geochronology, carbon (C) and sulfur (S) stable isotope geochemistry, and graphite Raman spectroscopy data from this deposit that support a new model of flake graphite ore...
Laboratory and field comparisons of TFM bar formulations used to treat small streams for larval sea lamprey
James A. Luoma, Justin Schueller, Nicholas Schloesser, Todd Johnson, Courtney Kirkeeng
2023, Management of Biological Invasions (14) 347-362
A solid formulation of the pesticide TFM (4-nitro-3-(trifluoromethyl)-phenol) was developed in the 1980s for application in small tributaries during treatments to control invasive sea lamprey (Petromyzon marinus Linnaeus, 1758). Several initial inert ingredients were discontinued and substituted, culminating with an interim formulation that unacceptably softens and rapidly decays in warm...
Estimates of volcanic mercury emissions from Redoubt Volcano, Augustine Volcano, and Mount Spurr eruption ash
D Skye Kushner, Taryn Lopez, Kristi L. Wallace, David Damby, Christoph Kern, Cheryl Cameron
2023, Frontiers in Earth Science (11)
Ash is a potential sink of volcanically sourced atmospheric mercury (Hg), and the concentration of particle-bound Hg may provide constraints on Hg emissions during eruptions. We analyze Hg concentrations in 227 bulk ash samples from the Mount Spurr (1992), Redoubt Volcano (2009), and Augustine Volcano (2006) volcanic eruptions...
Complex life histories alter patterns of mercury exposure and accumulation in a pond-breeding amphibian
Freya Elizabeth Rowland, Erin L. Muths, Collin A. Eagles-Smith, Craig A. Stricker, Johanna M. Kraus, Rachel A. Harrington, David Walters
2023, Environmental Science & Technology (57) 4133-4142
Quantifying how contaminants change across life cycles of species that undergo metamorphosis is critical to assessing organismal risk, particularly for consumers. Pond-breeding amphibians can dominate aquatic animal biomass as larvae and are terrestrial prey as juveniles and adults. Thus, amphibians can be vectors of mercury exposure...
Climate change as a global amplifier of human–wildlife conflict
Briana Abrahms, Neil H. Carter, T.J. Clark-Wolf, Kaitlyn M. Gaynor, Erik Johansson, Michael C Mcinturff, Anna Nisi, Kasim Rafiq, Leigh West
2023, Nature Climate Change (13) 224-234
Climate change and human–wildlife conflict are both pressing challenges for biodiversity conservation and human well-being in the Anthropocene. Climate change is a critical yet underappreciated amplifier of human–wildlife conflict, as it exacerbates resource scarcity, alters human and animal behaviours and distributions, and increases human–wildlife encounters. We...
Nitrate-stimulated release of naturally occurring sedimentary uranium
Jeffrey P Westrop, Pooja Yadav, PJ Nolan, Kate M. Campbell, Rajesh Singh, Sharon Bone, Alicia Chan, Anthony Hohtz, Donald Pan, Olivia Healy, John Bargar, Daniel D. Snow, Karrie Weber
2023, Environmental Science and Technology (57) 4354-4366
Groundwater uranium (U) concentrations have been measured above the U.S. EPA maximum contaminant level (30 μg/L) in many U.S. aquifers, including in areas not associated with anthropogenic contamination by milling or mining. In addition to carbonate, nitrate has been correlated to uranium...
Lake Erie hypoxia spatial and temporal dynamics present challenges for assessing progress toward water quality goals
Craig A. Stow, Mark D. Rowe, Casey M. Godwin, Lacey A. Mason, Peter Alsip, Richard Kraus, Thomas Johengen, Stephen A. Constant
2023, Journal of Great Lakes Research (49) 981-992
Seasonal hypolimnetic hypoxia has been documented in Lake Erie’s central basin since the 1950s. Ship-based surveys to monitor hypoxia have been conducted since the 1980s, but they occur at a relatively low frequency and focus on the deeper areas of the central basin. To better document the seasonal development of...
A big data–model integration approach for predicting epizootics and population recovery in a keystone species
Gabriel M. Barrile, David J. Augustine, Lauren M. Porensky, Courtney J. Duchardt, Kevin T. Shoemaker, Cynthia R. Hartway, Justin D. Derner, Elizabeth Ann Hunter, Ana D. Davidson
2023, Ecological Applications (33)
Infectious diseases pose a significant threat to global health and biodiversity. Yet, predicting the spatiotemporal dynamics of wildlife epizootics remains challenging. Disease outbreaks result from complex nonlinear interactions among a large collection of variables that rarely adhere to the assumptions of parametric regression modeling. We adopted a nonparametric machine learning...
Poleward amplification, seasonal rainfall and forest heterogeneity in the Miocene of the eastern USA
Tammo Reichgelt, Aly Baumgartner, Ran Feng, Debra A. Willard
2023, Global and Planetary Change (222)
Paleoclimate reconstructions can provide a window into the environmental conditions in Earth history when atmospheric carbon dioxide concentrations were higher than today. In the eastern USA, paleoclimate reconstructions are sparse, because terrestrial sedimentary deposits are rare. Despite this, the eastern...
Can angler-assisted broodstock collection programs improve harvest rates of hatchery-produced steelhead?
Marc A. Johnson, Michelle K. Jones, Matthew Richard Falcy, John Spangler, Ryan B. Couture, David Noakes
2023, Environmental Biology of Fishes 1079-1092
Fish that exhibit high foraging activity or bold behavior can be particularly vulnerable to angling. If these traits are heritable, selection through harvest can drive phenotypic change, eventually rendering a target population less vulnerable to angling and consequently impacting the quality of the fishery. In this...
Invasive predator diet plasticity has implications for native fish conservation and invasive species suppression
Hayley C. Glassic, Christopher S. Guy, Lusha M. Tronstad, Dominique R. Lujan, Michelle A. Briggs, Lindsey K. Albertson, Todd M. Koel
2023, PLoS ONE (18)
Diet plasticity is a common behavior exhibited by piscivores to sustain predator biomass when preferred prey biomass is reduced. Invasive piscivore diet plasticity could complicate suppression success; thus, understanding invasive predator consumption is insightful to meeting conservation targets. Here, we determine if diet plasticity exists in...
Status and trends of total nitrogen and total phosphorus concentrations, loads, and yields in streams of Mississippi, water years 2008–18
Matthew B. Hicks, Angela S. Crain, Natalie G. Segrest
2023, Scientific Investigations Report 2023-5003
To assess the status and trends of conditions of surface waters throughout Mississippi, the U.S. Geological Survey, in cooperation with the Mississippi Department of Environmental Quality (MDEQ), summarized concentrations and estimated loads, yields, trends, and spatial and temporal patterns of total nitrogen (TN) and total phosphorus (TP) at 20 stream...
The drift history of the Dharwar Craton and India from 2.37 Ga to 1.01 Ga with refinements for an initial Rodinia configuration
Scott R Miller, Joseph Meert, Anthony Francis Pivarunas, Anup K. Sinha, Manoj K. Pandit, Paul A. Mueller, George Kamenov
2023, Geoscience Frontiers (14)
Coupled paleomagnetic and geochronologic data derived from mafic dykes provide valuable records of continental movement. To reconstruct the Proterozoic paleogeographic history of Peninsular India, we report paleomagnetic directions and U-Pb zircon ages from twenty-nine mafic dykes in the Eastern Dharwar Craton near Hyderabad. Paleomagnetic analysis yielded clusters...
Random forest classification of multitemporal Landsat 8 spectral data and phenology metrics for land cover mapping in the Sonoran and Mojave Deserts
Madeline Melichar, Kamel Didan, Armando Barreto-Muñoz, Jennifer N. Duberstein, Eduardo Jimenez Hernandez, Theresa Crimmins, Haiquan Li, Myles B. Traphagen, Kathryn A. Thomas, Pamela L. Nagler
2023, Remote Sensing (15)
Geospatial data and tools evolve as new technologies are developed and landscape change occurs over time. As a result, these data may become outdated and inadequate for supporting critical habitat-related work across the international boundary in the Sonoran and Mojave Deserts Bird Conservation Region (BCR 33) due to the...
Estimating streamflow for base flow conditions at partial-record streamgaging stations at Acadia National Park, Maine
Pamela J. Lombard
2023, Scientific Investigations Report 2022-5126
The objective of the work presented in this report is to develop equations that can be used to extend the base flow record at multiple partial-record streamgaging stations at Acadia National Park in eastern coastal Maine based on nearby continuous-record streamgaging stations. Daily mean streamflow values at U.S. Geological Survey...
A hidden cost of single species management: Habitat-relationships reveal potential negative effects of conifer removal on a non-target species
Nicholas J. Van Lanen, Adrian P. Monroe, Cameron L. Aldridge
2023, Biological Conservation (280)
Land management priorities and decisions may result in population declines for non-target wildlife species. In the western United States, large-scale removal of conifer from sagebrush ecosystems (Artemisia spp.) is occurring to recover greater sage-grouse (Centrocercus urophasianus) populations and may result in pinyon jay (Gymnorhinus cyanocephalus) habitat loss. Jay populations have experienced...
Changes in mangrove blue carbon under elevated atmospheric CO2
Xiaoxuan Gu, Peiyang Qiao, Ken Krauss, Catherine E. Lovelock, Janine B. Adams, Samantha K. Chapman, Tim C. Jennerjahn, Qiulian Lin, Luzhen Chen
2023, Ecosystem Health and Sustainability (9)
While there is consensus that blue carbon ecosystems, such as mangroves, have an important role in mitigating some aspects of global climate change, little is known about mangrove carbon cycling under elevated atmospheric CO2 concentrations (eCO2). Here, we review studies in order to identify pathways for how eCO2 might influence mangrove ecosystem carbon...
Combinatorial optimization of earthquake spatial distributions under minimum cumulative stress constraints
Eric L. Geist, Thomas E. Parsons
2023, Bulletin of the Seismological Society of America (113) 1025-1038
We determine optimal on‐fault earthquake spatial distributions using a combinatorial method that minimizes the long‐term cumulative stress resolved on the fault. An integer‐programming framework was previously developed to determine the optimal arrangement of a millennia‐scale earthquake sample that minimizes the misfit to a target slip rate determined from geodetic data....
Identifying research in support of the management and control of dreissenid mussels in the western United States
Timothy D. Counihan, Lisa DeBruyckere, Stephen M. Bollens, Stephen Phillips, Theresa Thom, Barak Shemai
2023, Management of Biological Invasions (14) 459-466
On February 9–10, 2022, the Pacific States Marine Fisheries Commission, U.S. Fish and Wildlife Service, U.S. Geological Survey, and Washington State University hosted a workshop to establish research priorities that support the implementation of action items listed in a current invasive species management plan, the Quagga and Zebra Mussel Action...
Incorporation of real-time earthquake magnitudes estimated via peak ground displacement scaling in the ShakeAlert Earthquake Early Warning system
Jessica R. Murray, Brendan W. Crowell, Mark Hunter Murray, Carl W Ulberg, Jeffrey J. McGuire, Mario Aranha, Mike Hagerty
2023, Bulletin of the Seismological Society of America (113) 1286-1310
The United States earthquake early warning (EEW) system, ShakeAlert®, currently employs two algorithms based on seismic data alone to characterize the earthquake source, reporting the weighted average of their magnitude estimates. Nonsaturating magnitude estimates derived in real time from Global Navigation Satellite System (GNSS) data using peak ground displacement (PGD)...
