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Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

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Complex evolutionary history of felid anelloviruses Complex evolutionary history of felid anelloviruses

Anellovirus infections are highly prevalent in mammals, however, prior to this study only a handful of anellovirus genomes had been identified in members of the Felidae family. Here we characterise anelloviruses in pumas (Puma concolor), bobcats (Lynx rufus), Canada lynx (Lynx canadensis), caracals (Caracal caracal) and domestic cats (Felis catus). The complete anellovirus genomes (n =...
Authors
Simona Kraberger, Laurel EK Serieys, Cecile Richet, Nicholas M Fountain-Jones, Guy Baele, Jacqueline M. Bishop, Mary Nehring, Jacob S. Ivan, Eric S. Newkirk, John R. Squires, Michael C. Lund, Seth P. D. Riley, Christopher C. Wilmers, Paul D. van Helden, Koenraad Van Doorslaer, Melanie Culver, Sue VandeWoude, Darren P. Martin, Arvind Varsani

Selective host attachment by Ixodes scapularis (Acari: Ixodidae): Tick-lizard associations in the southeastern United States Selective host attachment by Ixodes scapularis (Acari: Ixodidae): Tick-lizard associations in the southeastern United States

Questing behavior and host associations of immature blacklegged ticks, Ixodes scapularis Say, from the southeastern United States are known to differ from those in the north. To elucidate these relationships we describe host associations of larval and nymphal I. scapularis from 8 lizard species sampled from 5 sites in the southeastern U.S. Larvae and nymphs attached in greater numbers to...
Authors
Howard Ginsberg, Graham J. Hickling, Genevieve Pang, Jean I. Tsao, Meghan Fitzgerald, Breann Ross, Eric L. Rulison, Russell L. Burke

Concentration-discharge relationships of dissolved rhenium in Alpine catchments reveal its use as a tracer of oxidative weathering Concentration-discharge relationships of dissolved rhenium in Alpine catchments reveal its use as a tracer of oxidative weathering

Oxidative weathering of sedimentary rocks plays an important role in the global carbon cycle. Rhenium (Re) has been proposed as a tracer of rock organic carbon (OCpetro) oxidation. However, the sources of Re and its mobilization by hydrological processes remain poorly constrained. Here we examine dissolved Re as a function of water discharge, using samples collected from three alpine...
Authors
Robert Hilton, Jens M. Turowski, Matthew Winnick, Mathieu Dellinger, Patrick Schleppi, Kenneth H. Williams, Corey Lawrence, Katharine Maher, Martin West, Amanda Hayton

Editorial: Environmental DNA innovations for conservation Editorial: Environmental DNA innovations for conservation

Environmental DNA (eDNA) analysis refers to the collection of bulk environmental samples such as water, sediment, or air, and studying the genetic remnants that organisms have shed into their environment to gain information about species presence.
Authors
Matthew A Barnes, Katy E. Klymus, Hiroki Yamanaka

Bankfull shear velocity predicts embeddedness and silt cover in gravel streambeds Bankfull shear velocity predicts embeddedness and silt cover in gravel streambeds

Excess fine sediment (
Authors
Jonathan A. Czuba, Mallory Hirschler, Elizabeth A. Pratt, Amy Villamagna, Paul L. Angermeier

Northern bobwhite occupancy patterns on multiple spatial scales across Arkansas Northern bobwhite occupancy patterns on multiple spatial scales across Arkansas

Northern bobwhite Colinus virginianus populations have been rapidly declining in the eastern, central, and southern United States for decades. Land use change and an incompatibility between northern bobwhite resource needs and human land use practices have driven declines. Here, we applied occupancy analyses on two spatial scales (state level and ecoregion level) to more than 5,000...
Authors
E. V. Lassiter, M. Asher, G. Christie, C. Gale, A. Massey, C. Massery, C. R. MIddaugh, J. Veon, Brett Alexander DeGregorio

Techniques to improve ecological interpretability of black box machine learning models Techniques to improve ecological interpretability of black box machine learning models

Statistical modeling of ecological data is often faced with a large number of variables as well as possible nonlinear relationships and higher-order interaction effects. Gradient boosted trees (GBT) have been successful in addressing these issues and have shown a good predictive performance in modeling nonlinear relationships, in particular in classification settings with a categorical...
Authors
Thomas Welchowski, Kelly O. Maloney, Richard M. Mitchell, Matthias Schmid

Bayesian modeling can facilitate adaptive management in restoration Bayesian modeling can facilitate adaptive management in restoration

There is an urgent need for near-term predictions of ecological restoration outcomes despite imperfect knowledge of ecosystems. Restoration outcomes are always uncertain but integrating Bayesian modeling into the process of adaptive management allows researchers and practitioners to explicitly incorporate prior knowledge of ecosystems into future predictions. Although barriers exist...
Authors
Cara Applestein, T. Trevor Caughlin, Matthew J. Germino

Synergistic interventions to control COVID-19: Mass testing and isolation mitigates reliance on distancing Synergistic interventions to control COVID-19: Mass testing and isolation mitigates reliance on distancing

Stay-at-home orders and shutdowns of non-essential businesses are powerful, but socially costly, tools to control the pandemic spread of SARS-CoV-2. Mass testing strategies, which rely on widely administered frequent and rapid diagnostics to identify and isolate infected individuals, could be a potentially less disruptive management strategy, particularly where vaccine access is limited...
Authors
Emily Howerton, Matthew J. Ferrari, Ottar N Bjornstad, Tiffany L. Bogich, Rebecca K. Borchering, Chris P. Jewell, James D. Nichols, William J.M. Probert, Michael C. Runge, Michael J. Tildesley, Cecile Viboud, Katriona Shea

Recursive Bayesian computation facilitates adaptive optimal design in ecological studies Recursive Bayesian computation facilitates adaptive optimal design in ecological studies

Optimal design procedures provide a framework to leverage the learning generated by ecological models to flexibly and efficiently deploy future monitoring efforts. At the same time, Bayesian hierarchical models have become widespread in ecology and offer a rich set of tools for ecological learning and inference. However, coupling these methods with an optimal design framework can become
Authors
Clinton B. Leach, William J. Perry, Joseph M. Eisaguirre, Jamie N. Womble, Michael R. Bower, Mevin Hooten

Rapid embryonic development supports the early onset of gill functions in two coral reef damselfishes Rapid embryonic development supports the early onset of gill functions in two coral reef damselfishes

The gill is one of the most important organs for growth and survival of fishes. Early life stages in coral reef fishes often exhibit extreme physiological and demographic characteristics that are linked to well-established respiratory and ionoregulatory processes. However, gill development and function in coral reef fishes is not well-understood. Therefore, we investigated gill...
Authors
LA Prescott, Amy M. Regish, SJ McMahon, Stephen D. McCormick, JL Rummer

Quantifying the stormwater runoff volume reduction benefits of urban street tree canopy Quantifying the stormwater runoff volume reduction benefits of urban street tree canopy

Trees in the urban right-of-way areas have increasingly been considered part of a suite of green infrastructure practices used to manage stormwater runoff. A paired-catchment experimental design (with street tree removal as the treatment) was used to assess how street trees affect major hydrologic fluxes in a typical residential stormwater collection and conveyance network. The treatment...
Authors
William R. Selbig, Steven P. Loheid, William Schuster, Bryant C. Scharenbroch, Robert C. Coville, James Kruegler, William Avery, Ralph J. Haefner, David Nowak
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