Potential effects of chronic wasting disease and supplemental feeding on elk populations in Wyoming
Paul C. Cross, Todd G. Wojtowicz
2025, Fact Sheet 2024-3046
IntroductionIn 2023, the U.S. Geological Survey, in collaboration with the U.S. Department of Agriculture Forest Service and the U.S. Fish and Wildlife Service, evaluated the costs and benefits of supplemental elk (Cervus elaphus canadensis) feeding in western Wyoming. Elk supplemental feeding is intended to maintain elk populations in the winter...
The 3D Elevation Program—Supporting Rhode Island’s economy
Dan Walters
2025, Fact Sheet 2025-3018
Introduction High-resolution elevation data are critical to applications of landscape modeling and planning, both of which have a significant effect on Rhode Island’s economy. In these and other enterprises, program managers, while aiming to strike a balance between accuracy and cost, strive to obtain the best available elevation data to...
Historical coast snaps: Using centennial imagery to track shoreline change
Fatima Valverde, Rui Taborda, Amy E. East, Cristina Ponte Lira
2025, Remote Sensing (p.)
Understanding long-term coastal evolution requires historical data, yet accessing reliable information becomes increasingly challenging for extended periods. While vertical aerial imagery has been extensively used in coastal studies since the mid-20th century, and satellite-derived shoreline measurements are now revolutionizing shoreline change studies, ground-based images, such as historical photographs and picture...
Identifying gaps in regulatory prevention measures for nonindigenous aquatic species in the United States
Zoey Hendrickson, Charles M. Martin, Wesley Daniel
2025, Management of Biological Invasions (16) 313-339
Nonindigenous aquatic species (NAS) present in trade can become costly invaders once introduced and established in a new environment. Preventing NAS introduction is considered the most effective strategy to avoid potential negative ecological, economic, and human health impacts associated with certain species. The United States government enacts regulatory prevention measures...
Application of Hydrologic Simulation Program—FORTRAN (HSPF) as part of an integrated hydrologic model for the Salinas Valley, California
Joseph A. Hevesi, Wesley R. Henson, Randall T. Hanson, Elizabeth Rae Jachens, Sandra Bond, Marisa Melody Earll, Deidre Herbert
2025, Scientific Investigations Report 2025-5009
The U.S. Geological Survey (USGS), in cooperation with the Monterey County Water Resources Agency, conducted studies to help evaluate the surface-water and groundwater resources of the Salinas Valley study area, consisting of the entire Salinas River watershed and several smaller, adjacent coastal watersheds draining into Monterey Bay. The Salinas Valley...
Influence of local river hydraulics on Kootenai River white sturgeon (Acipenser transmontanus) habitat selection during four spawning years, 2017–2020
Taylor Dudunake, Megan Kearney Kenworthy, Troy Smith, Sarah Stephenson, Ryan S. Hardy
2025, Canadian Journal of Fisheries and Aquatic Sciences (82)
Understanding fine-scale habitat selection of endangered Kootenai River white sturgeon (Acipenser transmontanus) is an important component for monitoring and recovery efforts. Fine-scale habitat selection and quantifying temporal changes in suitable habitat contributes to the work of addressing recruitment failure within the Kootenai River population. Habitat suitability indices were developed using...
How quickly do brook trout lose long-term thermal acclimation?
Matthew J. O'Donnell, Amy M. Regish, S.D. McCormick, Benjamin Letcher
2025, Journal of Thermal Biology (129)
Abundances of coldwater adapted stream fish populations are declining largely due to anthropogenic influences, including increased temperature. To persist in streams with unsuitable thermal habitat, fish must move to coldwater patches, acclimate, or adapt to water temperatures above thermal optima. Brook trout, a coldwater adapted salmonid, has previously displayed physiological...
Sediment nutrient dynamics in selected Milwaukee metropolitan area streams, Wisconsin, 2022
Rebecca M. Kreiling, Lynn A. Bartsch, Kenna J. Gierke, Patrik Mathis Perner, Faith A. Fitzpatrick, Hayley T. Olds
2025, Scientific Investigations Report 2025-5012
The U.S. Geological Survey and Milwaukee Metropolitan Sewerage District in Wisconsin have an ongoing partnership to monitor water quality in streams in the Milwaukee metropolitan area and to assess the effects of stream restoration on habitat and water quality. Because sediment nutrient dynamics can improve or further impair water quality,...
A nationwide evaluation of crowd-sourced ambient temperature data
Priyanka deSouza, Peter Christian Ibsen, Daniel M. Westervelt, Ralph Kahn, Benjamin Zaitchik, Patrick Kinney
2025, Frontiers of Environmental Science and Engineering in China (13)
Growing concerns about heat in urban areas paired with the sparsity of weather stations have resulted in individuals drawing on data from citizen science sensor networks to fill in data gaps. The PurpleAir are the most widely-used low-cost air quality sensors in the contiguous United States with 14,777 deployed between...
A synthesis of freshwater forested wetland soil organic carbon storage
Yadav Sapkota, Jacob F. Berkowitz, Camille Stagg, Ryan R. Busby
2025, Frontiers in Forests and Global Change (8)
Freshwater forested wetlands account for ~76% (918 M ha) of the total global wetland extent. However, freshwater forested wetlands are difficult to distinguish from upland forest due to canopy coverage, the abundance of wetland-nonwetland mosaics, seasonal hydropatterns, and fewer readily observable connections to large surface water bodies relative to marshes and other...
Environmental conditions influencing the abundance of the salmonid ectoparasite Salmincola californiensis across upper Willamette River Reservoirs, Oregon
Kelsi Antonelli, Christina Amy Murphy, Amanda M.M. Pollock, Ivan Arismendi
2025, Aquatic Biology (13)
The freshwater copepod Salmincola californiensis is an ectoparasite of Pacific salmon and trout (Oncorhynchus spp.). High levels of infection by this parasite can significantly damage gills and result in blood loss, affecting the fitness and survival of hosts, and it may hinder recovery efforts of threatened and endangered salmonids. Juvenile...
Equilibrium line altitudes, accumulation areas, and the vulnerability of glaciers in Alaska
Lucas Zeller, Daniel J McGrath, Louis C. Sass, Caitlyn Florentine, Jacob Downs
2025, Journal of Glaciology (71)
The accumulation area ratio (AAR) of a glacier reflects its current state of equilibrium, or disequilibrium, with climate and its vulnerability to future climate change. Here, we present an inventory of glacier-specific annual accumulation areas and equilibrium line altitudes (ELAs) for over 3000 glaciers in Alaska and northwest Canada (88%...
Estimating indicators of cyanobacterial harmful algal blooms in New York State
Philip Savoy, Rebecca Michelle Gorney, Jennifer L. Graham
2025, Ecological Indicators (173)
Cyanobacteria harmful algal blooms (cyanoHABs) are a global concern for aquatic ecosystem and human health. Limited funding for monitoring programs and inconsistent determination of cyanoHAB occurrence present challenges for identifying commonly effective variables for characterizing cyanoHABs and the development of generalized models. We compiled a combination of water quality measurements,...
Fast or slow: An evaluation of Ti-in-quartz diffusion coefficients through comparisons of quartz and plagioclase diffusion times
Sophia Wang, Guilherme Gualda, Jordan Edward Lubbers, Adam Kent
2025, Volcanica (8) 189-202
Diffusion geochronometry using Ti-in-quartz has become a valuable method in understanding the evolution of silicic magmas. However, four different options for Ti diffusivity (DTi) currently exist, spanning three orders of magnitude, resulting in substantially different estimated times and interpretations. We present Ti-in-quartz diffusion times for the Cerro Galán Ignimbrite using...
Neural network-based temporal ensembling of water depth estimates derived from SuperDove Images
Milad Niroumand-Jadidi, Carl J. Legleiter, Francesca Bovolo
2025, Remote Sensing (17)
CubeSats provide a wealth of high-frequency observations at a meter-scale spatial resolution. However, most current methods of inferring water depth from satellite data consider only a single image. This approach is sensitive to the radiometric quality of the data acquired at that particular instant in time, which could be degraded...
Uncertainty quantification of geophysical and hydrologic parameters estimated from borehole nuclear magnetic resonance data
Burke J. Minsley, Stephanie N. Phillips, Stephanie R. James
2025, JGR Machine Learning and Computation (2)
Borehole nuclear magnetic resonance (bNMR) data are typically used to infer in situ hydrologic properties. Partial water content as a function of pore size is estimated by fitting the measured NMR response to a multi-exponential T2 distribution, and the sum of estimated T2 amplitudes equals the total volumetric water content. From these estimated parameters,...
The North American greenhouse gas budget: Emissions, removals, and integration for CO2, CH4, and N2O (2010–2019): Results From the Second REgional Carbon Cycle Assessment and Processes Study (RECCAP2)
Benjamin Poulter, Guillermo Murray-Tortarolo, Daniel J. Hayes, Philippe Ciais, Robbie M. Andrew, Ana Bastos, Brendan Byrne, David Butman, Josep G. Canadell, Abhishek Chatterjee, Grant Domke, Andrew F. Feldman, Kelsey Foster, Neha Hunka, Robert B. Jackson, Werner A. kurz, Ayia Lindquist, Maodian Liu, Ingrid Luijkx, Arnaud Mialon, Anna M. Michalak, John Miller, Wolfgang A. Obermeier, Naiqin Pan, James T. Randerson, Peter A. Raymond, Pierre Regnier, Laure Resplandy, Gerard Rocher-Ros, Nemesio Rodriquez-Fernandez, Judith A. Rosentreter, Julio Cesar Salazar-Neira, Suzanne E. Tank, Hanqin Tan, Rodrigo Vargas, Yohanna Villalobos, Jonathan A. Wang, Xinyuan Wei, Kimberly Wickland, Christopher J. Williams , Lisamarie Windham-Myers, Christopher W. Woodall, Qing Ying, Zhen Zhang
2025, Global Biogeochemical Cycles (39)
Accurate accounting of greenhouse-gas (GHG) emissions and removals is central to tracking progress toward climate mitigation and for monitoring potential climate-change feedbacks. GHG budgeting and reporting can follow either the Intergovernmental Panel on Climate Change methodologies for National Greenhouse Gas Inventory (NGHGI) reporting or use atmospheric-based “top-down” (TD) inversions or...
Salinas Valley integrated hydrologic and reservoir operations models, Monterey and San Luis Obispo Counties, California
Wesley R. Henson, Randy Hanson, Scott E. Boyce, Joseph A. Hevesi, Elizabeth Rae Jachens
2025, Preprint
The area surrounding the Salinas Valley groundwater basin in Monterey and San Luis Obispo Counties of California is a highly productive agricultural area, contributes significantly to the local economy, and provides a substantial portion of vegetables and other agricultural commodities to the Nation. This region of California provides about half...
Linking tidal-creek sediment fluxes to vertical sediment accretion in a restored salt marsh
Daniel J. Nowacki, Jessica R. Lacy, SeanPaul La Selle
2025, Earth Surface Processes and Landforms (50)
Despite growing interest and investment in salt-marsh restoration, relatively few marshes subjected to restoration efforts have been systematically monitored to assess physical restoration trajectory or success. In south San Francisco Bay, CA, USA, where 83% of wetlands were lost via human manipulation, the largest wetland restoration effort on the U.S....
Identical sequence types of Yersinia ruckeri associated with lethal disease in wild-caught invasive Blue Catfish and cultured hybrid catfish (Channel Catfish ♀ × Blue Catfish ♂) from disparate aquatic ecosystems
Christine L. Densmore, Madeleine Hendrix, Stephen Reichley, Clayton D. Raines, Noah Bressman, Zachary Crum, Lester Khoo, Geoffrey Waldbieser, Matt Griffin, Timothy J Welch, Luke R. Iwanowicz
2025, Journal of Aquatic Animal Health (37) 21-33
ObjectiveThe Blue Catfish Ictalurus furcatus is commonly raised in warmwater aquaculture in the United States to produce Channel Catfish I. punctatus × Blue Catfish hybrids. It is also a prominent aquatic invasive species of concern in the mid-Atlantic region of the United States. Here, Yersina ruckeri was isolated from moribund Blue Catfish...
Nanometer-scale relationships between sedimentary organic matter molecular composition, fluorescence, cathodoluminescence, and reflectance: The importance of oxygen content at low thermal maturities
Aaron M. Jubb, Paul C. Hackley, Ryan J. McAleer, Jing Qu
2025, Organic Geochemistry (204)
Molecular characterization of sedimentary organic matter (SOM), termed macerals, is a common goal when seeking to understand petroleum generation as well as other geologic processes in deep time. However, unambiguous measurement of discrete macerals is challenging due to the small size of organic particles in sedimentary rocks, the proximity of...
Streamflow response to glacier mass loss varies with basin precipitation across Alaska
Janet H. Curran, Brianna Rick, Jeremy Littell, Louis C. Sass
2025, Water Resources Research (61)
Diminishing glaciers affect streamflow, and given the extent of glaciers in Alaska and adjacent Canada, continued glacier mass loss is likely to have profound effects on ecosystems sensitive to runoff. The effects of glacier mass loss on streamflow are likely to vary across the wide ranges of basin size, glacier...
Optimizing control of a freshwater invader in time and space
Jessica O. Diallo, Sarah J. Converse, Matthew Chmiel, Andy Stites, Julian D. Olden
2025, Ecological Applications (35)
The global spread of invasive species in aquatic ecosystems has prompted population control efforts to mitigate negative impacts on native species and ecosystem functions. Removal programs that optimally allocate removal effort across space and time offer promise for improving invader suppression or eradication, especially given the limited resources available to...
Origin stories: How does learned migratory behaviour arise in populations?
Janey Fugate, Cody F. Wallace, Ellen O. Aikens, Brett Jesmer, Matthew Kauffman
2025, Biological Reviews (100) 996-1014
Although decades of research have deepened our understanding of the proximate triggers and ultimate drivers of migrations for a range of taxa, how populations establish migrations remains a mystery. However, recent studies have begun to illuminate the interplay between genetically inherited and learned migrations, opening the door to the evaluation...
Sprague’s Pipits (Anthus spragueii) occupying high-elevation intermontane valley habitat throughout the breeding season in southwest Montana
Andrew C. Staufer, Emilie K. Maggs, Erik A. Beever, Adam E. Mitchell
2025, Western North American Naturalist (85) 80-86
Sprague's Pipit (Anthus spragueii) is an imperiled bird species that breeds in grasslands of the northern Great Plains of North America. While conducting avian surveys in the Centennial Valley, Beaverhead County, southwest Montana, during spring and summer 2023, we detected approximately 10 male Sprague's Pipits performing aerial displays. These represent...
