Variation in Prairie Chub hatch relationships across wet and dry years in the upper Red River basin
Maeghen Wedgeworth, Robert Michael Mollenhauer, Shannon K. Brewer
2023, North American Journal of Fisheries Management (43) 1246-1259
ObjectiveThe Prairie Chub Macrhybopsis australis is a poorly studied minnow species endemic to the upper Red River basin and is of both state and federal conservation interest due to uncertainty about its life history and potential listing status. The upper Red River basin...
Mars Science Laboratory CheMin data from the Glen Torridon region and the significance of lake-groundwater interactions in interpreting mineralogy and sedimentary history
Michael T. Thorpe, T. F. Bristow, E. Rampe, Nicholas Tosca, John P. Grotzinger, Kristen A. Bennett, C. N. Achilles, D. F. Blake, S. J. Chipera, G. Downs, R. T. Downs, S. M. Morrison, V. Tu, N. Castle, P. Craig, D. J. Des Marais, R. M. Hazen, D. W. Ming, R. V. Morris, A. H. Treiman, D. T. Vaniman, A. S. Yen, A. R. Vasavada, Erwin Dehouck, J. Bridges, J.O. Berger, Amy McAdam, T. Peretyazhko, K. Siebach, A. B. Bryk, V. F. Fox, Christopher M. Fedo
2023, Journal of Geophysical Research E: Planets (127)
The Glen Torridon (GT) region is positioned in terrains with strong clay mineral signatures, as inferred from orbital spectroscopy. The GT campaign confirmed orbital distinctions with in situ measurements by the Mars Science Laboratory rover, Curiosity, and the CheMin X-ray diffraction instrument with of some of the highest clay mineral...
Improved method for simulating groundwater inundation using the MODFLOW 6 Lake Transport Package
Lauren K. Mancewicz, Alex Mayer, Christian D. Langevin, Jason Gulley
2023, Groundwater (61) 421-430
Groundwater inundation due to sea level rise can affect island and coastal freshwater resources by exposing water tables to direct, continuous evaporation. Numerical simulations of groundwater inundation effects on coastal and island aquifers have been limited by an inability to simulate solute transport and variable density...
Lake trout (Salvelinus namaycush) otoliths indicate effects of climate and lake morphology on growth patterns in Arctic lakes
Eric Torvinen, Jeffrey A. Falke, Christopher D. Arp, Benjamin M. Jones, Matthew S. Whitman, Christian E. Zimmerman
2023, Ecology of Freshwater Fish (32) 166-180
Climate change is occurring rapidly in the Arctic, and an improved understanding of the response of aquatic biota and ecosystems will be important for this data-limited region. Here, we applied biochronology techniques and mixed-effects modelling to assess relationships among growth increments found on lake trout (Salvelinus namaycush) otoliths (N = 49) captured...
A novel origin for PGE reefs: A case study of the J-M Reef
Michael Jenkins, James E. Mungall, Michael L. Zientek, Gelu Costin, Zhuo-sen Yao
2023, Conference Paper, Applied Earth Science
The origin of meter scale stratiform layers of disseminated sulfides in enriched platinum group element (PGE) tenors and grades, called reef-type deposits, are the world’s most significant source of PGEs. Their origin in layered mafic intrusions remains debated, but in general, most researchers favor an orthomagmatic origin for reef-type deposits...
Structural properties of the Southern San Andreas fault zone in northern Coachella Valley from magnetotelluric imaging
Pieter-Ewald Share-MacParland, Jared R. Peacock, Steve C. Constable, Frank L. Vernon, Shunguo Wang
2023, Geophysical Journal International (232) 694-704
The Southern San Andreas fault (SSAF) poses one of the largest seismic risks in California. Yet, there is much ambiguity regarding its deeper structural properties around Coachella Valley, in large part due to the relative paucity of everyday seismicity. Here, we image a multistranded section of the SSAF using...
Fires, floods and other extreme events – How watershed processes under climate change will shape our coastlines
Jonathan A. Warrick, Amy E. East, Helen Willemien Dow
2023, Cambridge Prisms: Coastal Futures (1) E2
Ongoing sea-level rise has brought renewed focus on terrestrial sediment supply to the coast because of its strong influence on whether and how long beaches, marshes and other coastal landforms may persist into the future. Here, we summarise findings of sediment discharge from several coastal rivers, revealing...
Book review: Analytical groundwater modeling: Theory and applications using Python
Michael N. Fienen
2023, Groundwater (61) 4-5
No abstract available....
Using machine learning techniques with incomplete polarity datasets to improve earthquake focal mechanism determination
Robert Skoumal, David R. Shelly, Jeanne L. Hardebeck
2023, Seismological Research Letters (94) 294-304
Earthquake focal mechanisms are traditionally produced using P‐wave first‐motion polarities and commonly require well‐recorded seismicity. A recent approach that is less dependent on high signal‐to‐noise exploits similar waveforms to produce relative polarity measurements between earthquake pairs. Utilizing these relative polarity measurements, it is possible...
Engaging stakeholders to develop a decision support model of conservation risk and management capacity to prioritize investments in Bull Trout recovery
William R. Brignon, M. Brian Davis, Stephanie Gunkel, Jason B. Dunham, Michael H. Meeuwig, Chris S Allen, Shaun Clements
2023, North American Journal of Fisheries Management (43) 821-838
Rarely are sufficient resources available to support the full suite of management actions to promote recovery of a species across their entire distribution. Decision support models are a tool that can inform natural resource management decisions with consideration of the perspectives from a variety of stakeholders who work across large...
From data to interpretable models: Machine learning for soil moisture forecasting
Aniruddha Basak, Kevin M. Schmidt, Ole Mengshoel
2023, International Journal of Data Science and Analytics (15) 9-32
Soil moisture is critical to agricultural business, ecosystem health, and certain hydrologically driven natural disasters. Monitoring data, though, is prone to instrumental noise, wide ranging extrema, and nonstationary response to rainfall where ground conditions change. Furthermore, existing soil moisture models generally forecast poorly for time periods greater than a few...
GeoImageNet: A multi-source natural feature benchmark dataset for GeoAI and supervised machine learning
Wenwen Li, Sizhe Wang, Samantha T. Arundel, Chia-Yu Hsu
2023, GeoInformatica (27) 619-640
The field of GeoAI or Geospatial Artificial Intelligence has undergone rapid development since 2017. It has been widely applied to address environmental and social science problems, from understanding climate change to tracking the spread of infectious disease. A foundational task in advancing GeoAI research is the...
Exploring metapopulation-scale suppression alternatives for a global invader in a river network experiencing climate change
Brian D. Healy, Phaedra E. Budy, Charles B. Yackulic, Brendan P. Murphy, Robert C. Schelly, Mark C. McKinstry
2023, Conservation Biology (37)
Invasive species can dramatically alter ecosystems, but eradication is difficult, and suppression is expensive once they are established. Uncertainties in the potential for expansion and impacts by an invader can lead to delayed and inadequate suppression, allowing for establishment. Metapopulation viability models can aid in planning...
Environmental DNA metabarcoding read numbers and their variability predict species abundance, but weakly in non-dominant species
James Skelton, Allison R. Cauvin, Margaret Hunter
2023, Environmental DNA (5) 1092-1104
Metabarcoding of environmental DNA (eDNA) provides more comprehensive, efficient, and non-invasive sampling of biological communities than conventional methods. However, limitations of metabarcoding include taxon-specific biases in amplification and sequencing that distort assessments of community composition. Further, hyper-abundant species may disproportionately affect community composition assessments and impair the detection of rare...
Hot, wet and rare: Modelling the occupancy dynamics of the narrowly distributed Dixie Valley toad
Jonathan P. Rose, Patrick M. Kleeman, Brian J. Halstead
2023, Wildlife Research (50) 552-567
Context: Small population sizes and no possibility of metapopulation rescue put narrowly distributed endemic species under elevated risk of extinction from anthropogenic change. Desert spring wetlands host many endemic species that require aquatic habitat and are isolated by the surrounding xeric terrestrial habitat.Aims: We sought to model the occupancy dynamics of the...
Impact of sedimentary basins on Green’s functions for static slip inversion
Leah Langer, Stephen Beller, Evan Tyler Hirakawa, Jeroen Tromp
2023, Geophysical Journal International (232) 569-580
Earthquakes often occur in regions with complex material structure, such as sedimentary basins or mantle wedges. However, the majority of co-seismic modelling studies assume a simplified, often homogeneous elastic structure in order to expedite the process of model construction and speed up calculations. These co-seismic forward models are used...
Assessing population genomic structure and polyploidy: A crucial step for native plant restoration
Bryce A. Richardson, Robert Massatti, Nurul Islam-Faridi, Skylar Johnson, Francis F. Kilkenny
2023, Restoration Ecology (31)
Establishing an effective restoration program requires baseline genetic information to make sound decisions for seed increase and transfer. For many plants this information is lacking, especially among native forbs that are critical for pollinator health. Erigeron speciosus is a widespread, perennial forb occupying montane environments in the western United States and Canada....
The global seismographic network reveals atmospherically coupled normal modes excited by the 2022 Hunga Tonga eruption
Adam T. Ringler, Robert Anthony, Rick Aster, T. Taira, Brian Shiro, David C. Wilson, S. H. De Angelis, C. Ebeling, Matthew M. Haney, R. Matoza, H. Ortiz
2023, Geophysical Journal International (232) 2160-2174
The eruption of the submarine Hunga Tonga-Hunga Haʻapai (Hunga Tonga) volcano on 15 January 2022, was one of the largest volcanic explosions recorded by modern geophysical instrumentation. The eruption was notable for the broad range of atmospheric wave phenomena it generated and for their unusual coupling with the oceans...
Relationship of greater sage-grouse to natural and assisted recovery of key vegetation types following wildfire: Insights from scat
Matthew J. Germino, Christopher R. Anthony, Chad Raymond Kluender, Ethan A. Ellsworth, Ann M. Moser, Cara Applestein, Matthew Fisk
2023, Restoration Ecology (31)
Megafires are creating severe conservation problems worldwide for wildlife that have obligate dependencies on plant species that are foundational but fire-intolerant. Wildfire-induced loss of native perennials and increases in exotic annual grasses threaten greater sage-grouse (GRSG, Centrocercus urophasianus) in its sagebrush steppe habitat in western North America. Post-fire restoration using herbicides,...
Beyond glacier-wide mass balances: Parsing seasonal elevation change into spatially resolved patterns of accumulation and ablation at Wolverine Glacier, Alaska
Lucas Zeller, Daniel McGrath, Louis C. Sass, Shad O'Neel, Christopher J. McNeil, Emily Baker
2023, Journal of Glaciology (69) 87-102
We present spatially distributed seasonal and annual surface mass balances of Wolverine Glacier, Alaska, from 2016 to 2020. Our approach accounts for the effects of ice emergence and firn compaction on surface elevation changes to resolve the spatial patterns in mass balance at 10 m scale. We...
Integrative monitoring strategy for marine and freshwater harmful algal blooms and toxins across the freshwater-to-marine continuum
Meredith D. A. Howard, Jayme Smith, David A. Caron, Raphael Kudela, Keith A. Loftin, Kendra Hayashi, Rich Fadness, Susan Fricke, Jacob Kann, Miranda Roethler, A.O. Tatters, Susanna Theroux
2023, Integrated Environmental Assessment and Management (IEAM) (19) 586-604
Many coastal states throughout the USA have observed negative effects in marine and estuarine environments caused by cyanotoxins produced in inland waterbodies that were transported downstream or produced in the estuaries. Estuaries and other downstream receiving waters now face the dual risk of impacts...
Morphology and paleohydrology of intracrater alluvial fans north of Hellas Basin, Mars
Ryan B. Anderson, Rebecca Williams, Amber L. Gullikson, William Nelson
2023, Icarus (394)
Alluvial fans and sinuous ridges are both important records of the history of fluvial activity on Mars, and they often occur together. We present observations of alluvial fans, many of which exhibit inverted relief, in five craters in the region north of Hellas basin. The observed fans ranged in...
Management and environmental factors associated with simulated restoration seeding barriers in sagebrush steppe
Stella M. Copeland, John B. Bradford, Stuart P. Hardegree, Daniel Rodolphe Schlaepfer, Kevin J Badik
2023, Restoration Ecology (31)
Adverse weather conditions, particularly freezing or drought, are often associated with poor seedling establishment following restoration seeding in drylands like the Great Basin sagebrush steppe (USA). Management decisions such as planting date or seed source could improve restoration outcomes by reducing seedling exposure to weather barriers. We simulated the effects...
Late Cretaceous time-transgressive onset of Laramide arch exhumation and basin subsidence across northern Arizona−New Mexico, USA, and the role of a dehydrating Farallon flat slab
Jacob Thacker, Karl Karlstrom, Shari Kelley, Ryan S. Crow, Jerry Kendall
2023, GSA Bulletin (135) 389-406
Spatiotemporal constraints for Late Cretaceous tectonism across the Colorado Plateau and southern Rocky Mountains (northern Arizona−New Mexico, USA) are interpreted in regards to Laramide orogenic mechanisms. Onset of Laramide arch development is estimated from cooling recorded in representative thermochronologic samples in a three-step process of initial forward models, secondary HeFTy...
Spatially averaged stratigraphic data to inform watershed sediment routing: An example from the Mid-Atlantic United States
James Pizzuto, Katherine Skalak, Adam J. Benthem, Shannon A. Mahan, Mahmoud Sherif, Adam Pearson
2023, GSA Bulletin (135) 249-270
New and previously published stratigraphic data define Holocene to present sediment storage time scales for Mid-Atlantic river corridors. Empirical distributions of deposit ages and thicknesses were randomly sampled to create synthetic age-depth records. Deposits predating European settlement accumulated at a (median) rate of 0.06 cm yr−1, range from ∼18,000 to...
