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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Sandstone-hosted uranium deposits of the Colorado Plateau, USA
More than 4,000 sandstone-hosted uranium occurrences host over 1.2 billion pounds of mined and in situ U3O8 throughout the Colorado Plateau. Most of the resources are in two distinct mineral systems with deposits hosted in the Triassic Chinle and Jurassic Morrison Formations. In the Chinle mineral system, base metal sulfides typically accompany mineralization. The Morrison mineral system is charac
Authors
Susan M. Hall, Bradley S. Van Gosen, Robert A. Zielinski
Laboratory studies of potential competition for food and substrate among early juvenile Missouri River sturgeon and sympatric chub species
Juvenile Pallid Sturgeon Scaphirhynchus albus predominantly consume midges (family Chironomidae) and other macroinvertebrates, while Shovelnose Sturgeon S. platorynchus, Sicklefin Chub Macrhybopsis meeki, and Shoal Chub M. hyostoma feed on those same macroinvertebrates throughout life. The primary objective of this study was to assess the substrate component of habitat selection, specifically sele
Authors
Mark L. Wildhaber, Janice L. Albers
Unrecorded tundra fires of the Arctic Slope, Alaska USA
Few fires are known to have burned the tundra of the Arctic Slope north of the Brooks Range in Alaska, USA. A total of 90 fires between 1969 and 2022 are known. Because fire has been rare, old burns can be detected by the traces of thermokarst and distinct vegetation they leave in otherwise uniform tundra, which are visible in aerial photograph archives. Several prehistoric tundra burns have been
Authors
Eric A. Miller, Benjamin M. Jones, Carson Baughman, Randi R. Jandt, Jennifer L. Jenkins, David A. Yokel
Towards vibrant fish populations and sustainable fisheries that benefit all: Learning from the last 30 years to inform the next 30 years
A common goal among fisheries science professionals, stakeholders, and rights holders is to ensure the persistence and resilience of vibrant fish populations and sustainable, equitable fisheries in diverse aquatic ecosystems, from small headwater streams to offshore pelagic waters. Achieving this goal requires a complex intersection of science and management, and a recognition of the interconnecti
Authors
Steven J. Cooke, Elizabeth A. Fulton, Warwick H. H. Sauer, Abigail Lynch, Jason S. Link, Aaron A. Koning, Joykrushna Jena, Luiz G. M. Silva, Alison J. King, Rachel Kelly, Matthew Osborne, Julia Nakamura, Ann L. Preece, Atsushi Hagiwara, Kerstin Forsberg, Julie B. Kellner, Ilaria Coscia, Sarah Helyar, Manuel Barange, Elizabeth A. Nyboer, Meryl J. Williams, Ratana Chuenpagdee, Gavin A. Begg, Bronwyn M. Gillanders
Using DC resistivity ring array surveys to resolve conductive structures around tunnels or mine-workings
In underground environments, conventional direct current (DC) resistivity surveys with a single linear array of electrodes produce fundamentally non-unique inversions. These non-uniqueness and model resolution issues stem from limitations placed on the location of transmitters (TXs) and receivers (RXs) by the geometry of existing tunnels and boreholes. Poor excitation and/or sampling of the region
Authors
Michael Albert Mitchell, Douglas W. Oldenburg
Gene expression reveals immune response strategies of naïve Hawaiian honeycreepers experimentally infected with introduced avian malaria
The unprecedented rise in the number of new and emerging infectious diseases in the last quarter century poses direct threats to human and wildlife health. The introduction to the Hawaiian archipelago of Plasmodium relictum and the mosquito vector that transmits the parasite has led to dramatic losses in endemic Hawaiian forest bird species. Understanding how mechanisms of disease immunity to avia
Authors
Kristina L. Paxton, Loren Cassin-Sackett, Carter T. Atkinson, Elin Videvall, Michael G. Campana, Robert C. Fleischer
Ecological significance of Wild Huckleberries (Vaccinium membranaceum)
Wild huckleberry (Vaccinium globare/membranaceum complex) is a keystone species in the Pacific Northwest of the United States. The fruits are a primary food source for grizzly bears and other wildlife, as well as an important traditional and contemporary human food. Huckleberry shrubs also provide cover and nesting habitat for many animal species, including small mammals and birds. The flowers pro
Authors
Janene Lichtenberg, Tabitha Graves
A river basin spatial model to quantitively advance understanding of riverine tree response dynamics to water availability and hydrological management
Ecological condition continues to decline in arid and semi-arid river basins globally due to hydrological over-abstraction combined with changing climatic conditions. Whilst provision of water for the environment has been a primary approach to alleviate ecological decline, how to accurately monitor changes in riverine trees at fine spatial and temporal scales, remains a substantial challenge. This
Authors
Tanya M. Doody, Sicong Gao, Willem Vervoot, Jodie Pritchard, Michah Davies, Martin Nolan, Pamela L. Nagler
Efficacy of florfenicol and oxytetracycline administered in feed to control cisco mortality associated with Aeromonas salmonicida infections
Two medications (one with florfenicol and one with oxytetracycline) that are approved in the United States to control mortality due to furunculosis associated with Aeromonas salmonicida were assessed to determine their efficacy in medicated feeds to treat A. salmonicida-infected Cisco (also known as Lake Herring) Coregonus artedi. Cisco were subjected to static infection baths containing A. salmon
Authors
Aaron R. Cupp, Maren T. Tuttle-Lau, Eric Leis, Samantha L. Wolfe, Justin Smerud, John W. Oliver, Richard A. Erickson, Austin Hannah, Aaron Johnson, Rachel Grace Nelson, Isaac Standish, Joel Wils, Mark P. Gaikowski
User’s Guide to planetary image analysis and geologic mapping in ArcGIS Pro
Geologic maps are valuable tools in planetary science. Though planetary geologic maps are similar to terrestrial (Earthbased) geologic maps, the nature of planetary exploration introduces unique challenges for geologic mappers. Terrestrial geologic mappers prepare products from field-based observation, often comparing or refining those with aerial and (or) orbital images. Planetary geologic mappin
Authors
Sarah R. Black
Dissolved organic matter transformations in a freshwater rivermouth
River-to-lake transitional areas are biogeochemically active ecosystems that can alter the amount and composition of dissolved organic matter (DOM) as it moves through the aquatic continuum. However, few studies have directly measured carbon processing and assessed the carbon budget of freshwater rivermouths. We compiled measurements of dissolved organic carbon (DOC) and DOM in several water colum
Authors
Nolan J.T. Pearce, James H. Larson, Mary Anne Evans, Sean Bailey, Paul C. Frost, William F. James, Marguerite A. Xenopoulos
Climate change and maple syrup: Producer observations, perceptions, knowledge, and adaptation strategies
Introduction: Climate change is impacting forest-based agricultural systems with implications for producer decision-making and livelihoods. This article presents a case study on the observations, perceptions, knowledge, and adaptation strategies of maple syrup producers in the United States to climate change.Methods: We carried out two semi-structured surveys with maple producers on: (1) climate c
Authors
Selena Ahmed, David A. Lutz, T Joshua Rapp, Ryan H. Huish, Boris Dufour, Autumn Brunelle, Toni Lyn Morelli, Kristina A. Stinson, Teresa Warne