Publications
Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
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Interpreting a sudden population decline in a long-lived species (Malaclemys terrapin rhizophorarum) Interpreting a sudden population decline in a long-lived species (Malaclemys terrapin rhizophorarum)
Long-term ecological studies are critical for providing insight into population dynamics and detecting population declines, particularly for species of conservation concern. However, spatiotemporal variation and logistical challenges make the identification of sudden population declines difficult. We conducted an in-water capture-mark-recapture study of mangrove diamond-backed terrapins
Authors
Jacquelyn C. Guzy, Brian J. Smith, Mathew Denton, Michael Cherkiss, David Roche, Andrew G. Crowder, Kristen Hart
Long-term patterns in growth of White Sturgeon in the Sacramento-San Joaquin River basin, California. Long-term patterns in growth of White Sturgeon in the Sacramento-San Joaquin River basin, California.
Introduction: The Sacramento-San Joaquin River system (SSJ) of California includes both riverine, delta, and estuarine habitats and is among the most modified aquatic ecosystems in the United States. Water development projects in the system are associated with declines of many native species, including White Sturgeon Acipenser transmontanus. Methods: We used White Sturgeon pectoral fin...
Authors
Michael C. Quist, Shannon Blackburn, Marta Ulaski, Zachary Jackson
Using long-term ecological datasets to unravel the impacts of short-term meteorological disturbances on phytoplankton communities Using long-term ecological datasets to unravel the impacts of short-term meteorological disturbances on phytoplankton communities
Extreme meteorological events such as storms are increasing in frequency and intensity, but our knowledge of their impacts on aquatic ecosystems and emergent system properties is limited. Understanding the ecological impacts of storms on the dynamics of primary producers remains a challenge that needs to be addressed to assess the vulnerability of freshwater ecosystems to extreme weather
Authors
V. Tran-Khac, J.P. Doubek, Vijay P. Patil, J.D. Stockwell, R. Adrian, C.-W. Change, G. Dur, A. Lewandowska, J.A. Rusak, N. Salmaso, D. Straile, S.J. Thackeray, P. Venail, R. Bhattacharya, J. Brentrup, R. Bruel, H. Feuchtmayr, M.O. Gessner, H-P. Grossart, B.W. Ibelings, S. Jacquet, S. MacIntyre, S.S. Matsuzaki, E. Nodine, P. Nõges, L.G. Rudstam, F. Soulignac, P. Verburg, P. Znachor, T. Zohary, O. Anneville
Native Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri growth and survival in a headwater stream primarily driven by warming stream temperatures, with non-native brown trout Salmo trutta posing an additional threat to survival Native Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri growth and survival in a headwater stream primarily driven by warming stream temperatures, with non-native brown trout Salmo trutta posing an additional threat to survival
Warming rivers and interactions with non-native species impact salmonid species globally. Understanding how hydroclimatic conditions synergistically and independently interact with non-native species is critical for effectively managing salmonids into the future. We used a 10-year mark–recapture dataset to assess how native Yellowstone cutthroat trout (YCT) Oncorhynchus virginalis...
Authors
Kadie B. Heinle, Robert Al-Chokhachy, Adam Sepulveda, Christine E. Verhille
Horizontal transport of Picture Gorge Basalt magma through the Monument Dike Swarm determined by magnetic fabric Horizontal transport of Picture Gorge Basalt magma through the Monument Dike Swarm determined by magnetic fabric
Flood basalts of the mid-Miocene Columbia River Basalt Group (CRBG) cover 210,000 km2 of Washington, Oregon, and Idaho. The source of CRBG melt is debated; widely spaced feeder dike swarms can be projected toward hypothetical sources near the Oregon-Idaho border. In this study, we use anisotropy of magnetic susceptibility (AMS) to track magma flow in the Monument dike swarm (MDS), the...
Authors
Margaret Susan Avery, Anthony Francis Pivarunas
Factors influencing landslide occurrence in low-relief formerly glaciated landscapes: Landslide inventory and susceptibility analysis in Minnesota, USA Factors influencing landslide occurrence in low-relief formerly glaciated landscapes: Landslide inventory and susceptibility analysis in Minnesota, USA
In landscapes recently impacted by continental glaciation, landslides may occur where topographic relief has been generated by the drainage of glacial lakes and ensuing post-glacial fluvial network development into unconsolidated glacially derived sediments and exhumed bedrock. To investigate linkages among environmental variables, post-glacial landscape development, and landslides, we...
Authors
Laura Triplett, Morena N Hammer, Stephen B. DeLong, Karen B. Gran, Carrie E. Jennings, Zachary T. Engle, Julie K. Bartley, Dylan J. Blumentritt, Andy Breckenridge, Stephanie Day, Melissa A. Kohout, Philip H. Larson, Jeni A. McDermott, Emilie Richard
Modeling lamprey distribution using flow, geomorphology, and elevation in a terminal lake system Modeling lamprey distribution using flow, geomorphology, and elevation in a terminal lake system
Objective Lampreys are an ecologically important group of fishes. Several species are imperiled and lack key distribution and habitat data. The terminal Goose Lake Basin, U.S.A. is home to two such species, the Goose Lake Lamprey, Entosphenus sp. (formally undescribed), and the Pit-Klamath Brook Lamprey, E. lethophagus. Species distribution models (SDMs) are useful for identifying key...
Authors
Jacob C. Dickey, Benjamin J. Clemens, Michael Dumelle, Melanie J. Davis
Relating systematic molecular and textural properties of graptolite pyrolyzed via gold tube hydrous pyrolysis: Implications for thermal proxies in lower Paleozoic marine shales Relating systematic molecular and textural properties of graptolite pyrolyzed via gold tube hydrous pyrolysis: Implications for thermal proxies in lower Paleozoic marine shales
A series of gold tube pyrolysis experiments (72 h, 300–550 °C, 50 MPa) conducted on a graptolite-rich lower Paleozoic marine shale generated pyrolysis residues for a comprehensive evaluation of the molecular and structural variability of three types of graptolite periderm. Organic petrology, Raman spectroscopy, and field emission scanning electron microscopy (FE-SEM) with energy...
Authors
Xiaowei Zheng, Hamed Sanei, Fujie Jiang, Qingyong Luo, Yewei Wang, Jennifer Nedzweckas, Brett J. Valentine, Martha Stokes, Liu Cao, Paul C. Hackley
Methodology for defining and compiling abandoned and active hydrocarbon well inventories Methodology for defining and compiling abandoned and active hydrocarbon well inventories
Hydrocarbon wells are not active forever; when they become permanently disused (abandoned), well infrastructure must be remediated or repurposed. Knowing which wells are abandoned is the initial and often complicated step in taking responsibility for well infrastructure. Each State creates laws and regulates hydrocarbon operations, which includes well abandonment. The existence of...
Authors
Brian A. Varela, Marc L. Buursink
Rhenium-osmium and oxygen isotope homogeneity during the 2022 Mauna Loa eruption and implications for basaltic magma storage Rhenium-osmium and oxygen isotope homogeneity during the 2022 Mauna Loa eruption and implications for basaltic magma storage
Mauna Loa is one of the largest and most active volcanoes on Earth. The most recent eruption of Mauna Loa started on 27 November 2022, lasted for 13 days, and was preceded by the longest repose time of 38 years in its modern history. In this contribution, new trace- and highly siderophile-element (HSE: Os, Ir, Ru, Pt, Pd, Re) abundances, 187Re-187Os, and 18O/16O data are reported for the...
Authors
Emily A. Rhoads, Anton Kutyrev, Ilya N. Bindeman, Kendra J. Lynn, Frank A. Trusdell, Drew T. Downs, Hunter R. Edwards, Geoffrey W. Cook, James M.D. Day
Dynamic riskscapes for prey: Disentangling the impact of human and cougar presence on deer behavior using GPS smartphone locations Dynamic riskscapes for prey: Disentangling the impact of human and cougar presence on deer behavior using GPS smartphone locations
Prey species adjust their behavior along human-use gradients by balancing risks from predators and humans. During hunting seasons, prey often exhibit strong antipredator responses to humans but may develop tolerance in suburban areas to exploit human-mediated resources. Additionally, areas with high human activity may offer reduced predation risk if apex predators avoid such locations...
Authors
Heather Abernathy, Mark Dittmer, David Stoner, Kent Hersey, Kathryn A. Schoenecker, Pat Jackson, Kristin Engebretsen, Julie Young, George Wittemyer
Finding the hidden orogeny – The Proterozoic polymetamorphic history of northern New Mexico Finding the hidden orogeny – The Proterozoic polymetamorphic history of northern New Mexico
Pressure–temperature–time-deformation histories provide key constraints on orogenic processes but can be affected by later overprinting. This is exemplified in the Proterozoic orogenic belts of southwestern Laurentia where competing tectonic models involve either a single progressive Mesoproterozoic event, the Picuris orogeny, or a polyorogenic history that also includes the ~1.65 Ga...
Authors
Ian William Hillenbrand, Michael L Williams, Amy K. Gilmer, Karl E. Karlstrom, Michael J. Jercinovic, Daniel J Young