Morphotypical and geochemical variations of planktic foraminiferal species in Siberian and Central Arctic Ocean core tops
Maya Prabhakar, Kaustubh Thirumalai, Thomas M. Cronin, Laura Gemery, Elizabeth Thomas, Patrick Rafter
2024, Journal of Foraminiferal Research (54) 1-19
In this work, we utilize a transect of core top, mid- to late Holocene, sediments from the Eastern Siberian Sea to the central Arctic Ocean, spanning gradients in upper-ocean water column properties, to examine regional planktic foraminiferal species abundances and geochemistry. We present...
Need and vision for global medium-resolution Landsat and Sentinel-2 data products
Volker C. Radeloff, David P. Roy, Mike Wulder, Martha Anderson, Bruce D. Cook, Christopher J. Crawford, Mark Friedl, Feng Gao, Noel Gorelick, Matthew Hansen, Sean Healey, Patrick Hostert, Glynn Hulley, Justin Huntington, Dave Johnson, Christopher Neigh, Alexei Lyapustin, Leo Lymburner, Nima Pahlevan, Jean-Francois Pekel, Theodore A. Scambos, Crystal Schaaf, Peter Strobl, Eric Vermote, Curtis Woodcock, Hankui K. Zhang, Zhe Zhu
2024, Remote Sensing of Environment (300)
Global changes in climate and land use are threatening natural ecosystems, biodiversity, and the ecosystem services people rely on. This is why it is necessary to track and monitor spatiotemporal change at a level of detail that can inform science, management, and policy development. The current constellation of multiple Landsat and Sentinel-2 satellites...
Individual-based ecological particle tracking model (ECO-PTM) for simulating juvenile chinook salmon migration and survival through the Sacramento – San Joaquin Delta
Xiaochun Wang, Russell W. Perry, Adam C. Pope, Doug Jackson, Dalton Hance
2024, San Francisco Estuary and Watershed Science (22)
Recovery of endangered salmon species in the Central Valley of California amidst prolonged drought and climate change necessitates innovative water management actions that balance species recovery and California's water demands. We describe an individual-based ecological particle tracking model (ECO-PTM) that can be used to assess the efficacy of proposed actions....
Variable climate-growth relationships of quaking aspen (Populus tremuloides) among Sky Island mountain ranges in the Great Basin, Nevada, USA
Martin Senfeldr, Douglas J. Shinneman, Susan K. McIlroy, Paul Rogers, R. Justin DeRose
2024, Forest Ecology and Management (554)
The Great Basin is an arid province located in the interior western United States. The region encompasses millions of hectares and quaking aspen (Populus tremuloides Michx.) forests comprise a minor portion of the total area. However, montane aspen forests play a...
Modular compositional learning improves 1D hydrodynamic lake model performance by merging process-based modeling with deep learning
Robert Ladwig, Arka Daw, Elen A Albright, Cal Buelo, Anuj Karpatne, Michael Frederick Meyer, Abhilash Neog, Paul C. Hanson, Hilary A. Dugan
2024, Journal of Advances in Modeling Earth Systems (16)
Hybrid Knowledge-Guided Machine Learning (KGML) models, which are deep learning models that utilize scientific theory and process-based model simulations, have shown improved performance over their process-based counterparts for the simulation of water temperature and hydrodynamics. We highlight the modular compositional learning (MCL) methodology as a novel design...
How long have we been mistaken? Multi-tools shedding light into the systematics of the widespread deep-water genus Madrepora Linnaeus, 1758 (Scleractinia)
Katia C. C. Capel, Carla Zilberberg, Raphael M. Carpes, Cheryl Morrison, Claudia F. Vaga, Andrea M. Quattrini, Randolph Z. B. Quek, Danwei Huang, Stephen D. Cairns, Marcelo V. Kitahara
2024, Molecular Phylogenetics and Evolution (191)
Deep-water coral reefs are found worldwide and harbor biodiversity levels that are comparable to their shallow-water counterparts. However, the genetic diversity and population structure of deep-water species remain poorly explored, and historical taxonomical issues still need to be resolved. Here we used microsatellite markers as well as ultraconserved elements (UCE) and exons to shed...
Divergent physiological responses of hydric and mesic riparian plant species to a Colorado River experimental flow
Bradley J. Butterfield, Emily C. Palmquist
2024, Plant Ecology (225) 125-133
Riparian plant species can differ in their responses to streamflow variation in ways that strongly influence the composition and functioning of riparian plant communities. Quantifying these differences and the potential asymmetry of responses to low- versus high-flow phases of stream fluctuations is important for predicting and...
Trophic ecology of juvenile lean and siscowet lake charr (Salvelinus namaycush) in Lake Superior: Assessing for potential competition
Brandon S. Gerig, Shawn P. Sitar, Will F Otte, Daniel L. Yule, Heidi K. Swanson, Charles R. Bronte, Dray Carl, Joshua Blankenheim
2024, Canadian Journal of Fisheries and Aquatic Sciences (81) 115-128
We investigated the spatial overlap, diet, isotopic niche, and growth of juvenile lean and siscowet lake charr (Salvelinus namaycush) in Lake Superior to address concerns of potential competition with implications to the study of resource polymorphism. Catch data revealed the greatest levels of sympatry in waters from...
Habitat and dissolved organic carbon modulate variation in the biogeochemical drivers of mercury bioaccumulation in dragonfly larvae at the national scale
Sarah J. Nelson, James Willacker, Collin A. Eagles-Smith, Colleen M Flanagan Pritz, Celia Y. Chen, Amanda J Klemmer, David P. Krabbenhoft
2024, Science of the Total Environment (912)
We paired mercury (Hg) concentrations in dragonfly larvae with water chemistry in 29 U.S. national parks to highlight how ecological and biogeochemical context (habitat, dissolved organic carbon [DOC]) influence drivers of Hg bioaccumulation. Although prior studies have defined influences of biogeochemical variables on Hg production and bioaccumulation, it has been...
Using an open-source tool to develop a three-dimensional hydrogeologic framework of the Kobo Valley, Ethiopia
Sisay Simachew Mekonen, Scott E. Boyce, Abdella K. Mohammed, Markus Disse
2024, Geosciences (14)
Groundwater resource management requires understanding the groundwater basin’s hydrogeology and would be improved with the development of a three-dimensional hydrogeologic framework model (HFM). A wide range of methods and software exist to quantify the extent, structure, and properties of geologic systems. However, most geologic software is proprietary and cost-prohibitive for...
Effects of temperature on viral load, inclusion body formation, and host response in Pacific Herring with viral erythrocytic necrosis (VEN)
Joanne Elizabeth Salzer, Justin Blaine Greer, Maya L. Groner, Ashley MacKenzie, Jacob L. Gregg, Paul Hershberger
2024, Journal of Aquatic Animal Health (36) 45-56
ObjectiveThe primary objective of this study was to determine the effects of temperature on viral erythrocytic necrosis (VEN) progression under controlled conditions. Secondarily, this study was intended to evaluate the combined effects of temperature and VEN on the Pacific Herring Clupea palasii transcriptome.MethodsThe effects of temperature...
Legacy sediment as a potential source of orthophosphate: Preliminary conceptual and geochemical models for the Susquehanna River, Chesapeake Bay watershed, USA
Charles A. Cravotta III, Travis L. Tasker, Peter M. Smyntek, Joel D. Blomquist, John W. Clune, Qian Zhang, Noah Schmadel, Natalie Katrina Schmer
2024, Science of the Total Environment (912)
Nutrient pollution from agriculture and urban areas plus acid mine drainage (AMD) from legacy coal mines are primary causes of water-quality impairment in the Susquehanna River, which is the predominant source of freshwater and nutrients entering the Chesapeake Bay. Recent increases in the delivery of dissolved orthophosphate (PO4)...
Non-native Rhizophora mangle as sinks for coastal contamination on Moloka'i, Hawai'i
Geoffrey Szafranski, Elise F. Granek, Michelle L. Hladik, Mia Hackett
2024, Environmental Advances (15)
Coastal mangrove forests provide a suite of environmental services, including sequestration of anthropogenic contamination. Yet, research lags on the environmental fate and potential human health risks of mangrove-sequestered contaminants in the context of mangrove removal for development and range shifts due to climate...
Forecasting water levels using machine (deep) learning to complement numerical modelling in the southern Everglades, USA
Courtney S Forde, Biswa Bhattacharya, Dimitri Solomatine, Eric Swain, Nicholas Aumen
Gerald A. Corzo Perez, Dimitri Solomatine, editor(s)
2024, Book chapter, Advanced hydroinformatics: Machine learning and optimization for water resources
Water level is an important guide for water resource management and wetland ecosystems, defining one of the most basic processes in hydrology. This research seeks to investigate the possibility of complementing numerical modeling with a Machine Learning (ML) model to forecast daily water levels in the southern Everglades in Florida,...
Numbers of wildlife fatalities at renewable energy facilities in a targeted development region
Tara Conkling, Amy L. Fesnock, Todd E. Katzner
2024, PLoS ONE (18)
Increased interest in renewable energy has fostered development of wind and solar energy facilities globally. However, energy development sometimes has negative environmental impacts, such as wildlife fatalities. Efforts by regional land managers to balance energy potential while minimizing fatality risk currently rely on datasets that are aggregated at continental, but...
PCB concentrations in riparian spiders (Tetragnathidae) consistently reflect concentrations in water and aquatic macroinvertebrates, but not sediment: Analysis of a seven-year field study
Ryan R. Otter, Marc A. Mills, Ken M. Fritz, James M. Lazorchak, Dalon P. White, Gale B. Beaubien, David Walters
2024, Science of the Total Environment (912)
Tetragnathid spiders have been used as sentinels to study the biotransport of contaminants between aquatic and terrestrial environments because a significant proportion of their diet consists of adult aquatic insects. A key knowledge gap in assessing tetragnathid spiders as sentinels is understanding the consistency...
Rangeland pitting for revegetation and annual weed control
Danielle Bilyeu Johnston, Rebecca K. Mann
2024, Rangelands (46) 23-30
On the GroundSoil pitting is an ancient technique for concentrating soil moisture to enable plant establishment and promote plant growth. It is especially effective in arid areas where plant establishment is limited by water availability.Pits created by digging and mounding action have...
Ecological benefits of integrative weed management of Melaleuca quinquenervia in Big Cypress National Preserve
Melissa C. Smith, Paul Julien, Don DeAngelis, Bo Zhang
2024, BioControl (69) 293-301
The southern tip of North America coalesces into one of the world’s largest freshwater wetlands, the Everglades, Florida, USA. Though this region is much like an island, home to high biodiversity and endemism, it is also the site of a century of development and associated landscape-scale...
Hydrologic changes in the Brazos River Basin and implications for Great Plains fishes
Brad D. Wolaver, Lindsay V. Reynolds, Todd Caldwell, Tara Bongiovanni, Jon Paul Pierre, Caroline Breton, Kevin B. Mayes
2024, Journal of Hydrology (629)
Hydrologic changes in the Brazos River Basin and implications for Great Plains fishes...
Bobcat occupancy, tree islands, and invasive Burmese pythons in an Everglades conservation area
Katherine M. Buckman, Laura D’Acunto, Stephanie Romanach, Rachel M. Taylor, Nathan J. Dorn
2024, The Journal of Wildlife Management (88)
Bobcats (Lynx rufus) are terrestrial mammals that also inhabit tree islands (i.e., topographically elevated patches of forested land) embedded in the subtropical Everglades wetlands, which serve as a dry refuge habitat during the wet season in this region of Florida, USA. The Comprehensive Everglades...
Hydraulic properties of sediments from the GC955 gas hydrate reservoir in the Gulf of Mexico
Imgenur Tepecik, Yumeng Zhao, Yongkoo Seol, Adrian Victor Garcia, William F. Waite, Sheng Dai
2024, Geomechanics for Energy and the Environment (37)
The economic feasibility of gas production from hydrate deposits is critical for hydrate to become an energy resource. Permeability in hydrate-bearing sediments dictates gas and water flow rates and needs to be accurately evaluated. Published permeability studies of hydrate-bearing sediments mostly quantify vertical...
An open-source workflow for scaling burn severity metrics from drone to satellite to support post-fire watershed management
Joshua W. Von Nonn, Miguel L. Villarreal, Leonhard Blesius, Jerry D. Davis, Skye C. Corbett
2024, Environmental Modelling & Software (172)
Wildfires are increasing in size and severity across much of the western United States, exposing vulnerable wildland-urban interfaces to post-fire hazards. The Mediterranean chaparral region of Northern California contains many high sloping watersheds prone to hazardous post-fire flood events and...
Hyperspectral (VNIR-SWIR) analysis of roll front uranium host rocks and industrial minerals from Karnes and Live Oak Counties, Texas Coastal Plain
Bernard E. Hubbard, Tanya J. Gallegos, Victoria G. Stengel, Todd M. Hoefen, Raymond F. Kokaly, Brent Elliott
2024, Journal of Geochemical Exploration (257)
VNIR-SWIR (400–2500 nm) reflectance measurements were made on the surfaces of various cores, cuttings and sample splits of sedimentary rocks from the Tertiary Jackson Group, and Catahoula, Oakville and Goliad Formations. These rocks vary in composition and texture from mudstone and claystone to sandstone and are known host rocks for roll front uranium occurrences...
Comparison of δ13C analyses of individual foraminifer (Orbulina universa) shells by secondary ion mass spectrometry and gas source mass spectrometry
Jody Brae Wycech, Daniel Clay Kelly, Reinhard Kozdon, Akizumi Ishida, Kouki Kitajima, Howard J. Spero, John W. Valley
2024, Rapid Communications in Mass Spectrometry (38)
Rationale: The use of secondary ion mass spectrometry (SIMS) to perform micrometer-scale in situ carbon isotope (δ13C) analyses of shells of marine microfossils called planktic foraminifers holds promise to explore calcification and ecological processes. The potential of this technique, however, cannot be realized without comparison to traditional whole-shell δ13C values measured by...
Etiology of a fish kill, Including the endangered Tidewater Goby (Eucyclogobius newberryi), in a northeastern pacific coastal lagoon
Frederick V. Feyrer, Matthew J. Young, Tamara E. C. Kraus, Elizabeth B. Stumpner, Darren Fong, Kurt D. Carpenter
2024, Estuaries and Coasts (47) 894-904
Ecological disturbances such as fish kills can negatively impact ecosystem processes in coastal lagoons. To gain an understanding of factors causing fish kills, we examined conditions associated with a summertime fish kill in a northeastern Pacific coastal lagoon (Rodeo Lagoon, CA, USA). Examination of available data...
