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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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A new sturgeon herpesvirus from juvenile Lake Sturgeon Acipenser fulvescens displaying epithelial skin lesions A new sturgeon herpesvirus from juvenile Lake Sturgeon Acipenser fulvescens displaying epithelial skin lesions

Herpesvirus infections of sturgeon pose a potential threat to sturgeon culture efforts worldwide. A new epitheliotropic herpesvirus named Acipenser herpesvirus 3 (AciHV-3) was detected in hatchery-reared Lake Sturgeon Acipenser fulvescens displaying skin lesions in central Canada. The growths were discovered in the fall, reached average prevalence levels of 0.2–40% and eventually...
Authors
Sharon Clouthier, Marek Tomczyk, Tamara Schroeder, Cheryl Klassen, Andre Dufresne, Eveline J. Emmenegger, Thomas Nalpathamkalam, Zhuozhi Wang, Bhooma Thiruvahindrapuram

Effects of feeding and habitat on resting metabolic rates of the Pacific walrus Effects of feeding and habitat on resting metabolic rates of the Pacific walrus

Arctic marine mammals live in a rapidly changing environment due to the amplified effects of global warming. Pacific walruses (Odobenus rosmarus divergens) have responded to declines in Arctic sea-ice extent by increasingly hauling out on land farther from their benthic foraging habitat. Energy models can be useful for better understanding the potential implications of changes in...
Authors
Karyn D. Rode, Joan Rocabert, Alicia Borque-Espinosa, Diana Ferrero-Fernandez, Andreas Fahlman

Support for management actions to protect night sky quality: Insights from visitors to state and national park units in the U.S. Support for management actions to protect night sky quality: Insights from visitors to state and national park units in the U.S.

Light pollution is a global phenomenon where anthropogenic light sources continue to grow unabated, affecting both social and ecological systems. This is leaving parks and protected areas as some of the last vestiges of naturally dark environments for protecting views of the night sky. Yet, even parks and protected areas have outdoor lighting. Alternative lighting practices are needed to...
Authors
J. Adam Beeco, Emily J. Wilkins, Anna B. Miller, Chase C. Lamborn, Sharolyn Anderson, Zachary D. Miller, Jordan W. Smith

Quantifying site effects and their influence on earthquake source parameter estimations using a dense array in Oklahoma Quantifying site effects and their influence on earthquake source parameter estimations using a dense array in Oklahoma

We investigate the effects of site response on source parameter estimates using earthquakes recorded by the LArge-n Seismic Survey in Oklahoma (LASSO). While it is well known that near-surface unconsolidated sediments can cause an apparent breakdown of earthquake self-similarity, the influence of laterally varying site conditions remains unclear. We analyze site conditions across the...
Authors
Hilary Chang, Rachel E. Abercrombie, Nori Nakata, Colin Pennington, Kilian B. Kemna, Elizabeth S. Cochran, Rebecca M. Harrington

Scanning electron microscopic evaluation of broad ion beam milling effects to sedimentary organic matter: Sputter-induced artifacts or naturally occurring porosity? Scanning electron microscopic evaluation of broad ion beam milling effects to sedimentary organic matter: Sputter-induced artifacts or naturally occurring porosity?

Research examining organic-matter hosted porosity has significantly increased during the last decade due to greater focus on understanding hydrocarbon migration and storage in source-rock reservoirs, and technological advances in scanning electron microscopy (SEM) capabilities. The examination of nanometer-scale organic-matter hosted porosity by SEM requires the preparation of...
Authors
Brett J. Valentine, Paul C. Hackley

Eastern Indigo snake (Drymarchon couperi) shelter site use In peninsular Florida, USA, and implicatIons for habItat conservatIon Eastern Indigo snake (Drymarchon couperi) shelter site use In peninsular Florida, USA, and implicatIons for habItat conservatIon

Shelters are critical for many species as protection from predators and extreme temperatures. Successful conservation of reptiles requires understanding both shelter site requirements and availability. The Eastern Indigo Snake (EIS; Drymarchon couperi) is endemic to the southeastern U.S. and is federally listed. Recovery has focused on maximizing unfragmented landscapes, with less...
Authors
M. Rebecca Bolt, Javan Mathias Bauder, Michael L. Legare, Christopher L. Jenkins, Betsie B. Rothermel, David R. Breininger

Widespread retreat of coastal habitat is likely at warming levels above 1.5 °C Widespread retreat of coastal habitat is likely at warming levels above 1.5 °C

Several coastal ecosystems—most notably mangroves and tidal marshes—exhibit biogenic feedbacks that are facilitating adjustment to relative sea-level rise (RSLR), including the sequestration of carbon and the trapping of mineral sediment1. The stability of reef-top habitats under RSLR is similarly linked to reef-derived sediment accumulation and the vertical accretion of protective coral...
Authors
Neil Saintilan, Benjamin Horton, Torbjörn Törnqvist, Erica Ashe, Nicole Khan, Mark Schuerch, Chris Perry, Robert E. Kopp, Gregory Garner, Nicholas Murray, Kerrylee Rogers, Simon Albert, Jeffrey Kelleway, Timothy Shaw, Colin D. Woodroffe, Catherine E. Lovelock, Madeline Goddard, Lindsay B. Hutley, Katya Kovalenko, Laura Feher, Glenn R. Guntenspergen

Estimating fat content in barred owls (Strix varia) with predictive models developed from direct measures of proximate body composition Estimating fat content in barred owls (Strix varia) with predictive models developed from direct measures of proximate body composition

Body condition indices and related metrics can help assess habitat quality and other ecological processes, and ideally, these metrics are based on measures of lipids directly extracted from the species of interest. In recent decades, barred owls (Strix varia) have become a species of conservation concern as they invaded older forests of the US Pacific Northwest, and caused population...
Authors
Ryan C. Baumbusch, Katie M. Dugger, David Wiens

Reanalysis ignores pertinent data, includes inappropriate observations, and disregards realities of applied ecology: Response to Huso and Dalthorp (2023) Reanalysis ignores pertinent data, includes inappropriate observations, and disregards realities of applied ecology: Response to Huso and Dalthorp (2023)

1) We recently demonstrated efficacy of automated curtailment of wind turbines in reducing fatalities of eagles at a study site in Wyoming, USA. Huso and Dalthorp criticize our work, asserting that there are several ‘major errors’ that render our previous work as providing ‘no meaningful support’ for automated curtailment. As we show here, our data do indeed provide support for the...
Authors
Christopher J.W. McClure, Brian W. Rolek, Leah Dunn, Jennifer D. McCabe, Luke Martinson, Todd E. Katzner

Reanalysis indicates little evidence of reduction in eagle mortality rate by automated curtailment of wind turbines Reanalysis indicates little evidence of reduction in eagle mortality rate by automated curtailment of wind turbines

Unintended consequences of renewable energy development include collision-caused deaths of birds and bats. Energy companies may risk prosecution if protected species are among the casualties. Shutting down turbines during high collision-risk conditions could reduce mortality rates, and several companies are developing systems to identify such conditions.A recent peer-reviewed article...
Authors
Manuela Huso, Daniel Dalthorp

Influence of human development and predators on patterns of Virginia opossum occupancy, abundance, and activity Influence of human development and predators on patterns of Virginia opossum occupancy, abundance, and activity

As human development continues to expand, wildlife must relocate or adapt to survive. Many mammalian mesopredators, such as the Virginia opossum (Didelphis virginiana), have adapted to living alongside human development. Furthermore, top-down predation pressure may be altered in nuanced ways within the human environment. Species such as opossums may be shielded from predation by human...
Authors
John T. Veon, Ellery V. Lassiter, Emily Johansson, Michael Shaw, Leah McTigue, A. Massey, Rylee Gibson, Brett Alexander DeGregorio

Scenario planning and multispecies occupancy models reveal positive avian responses to restoration of afforested woodlands Scenario planning and multispecies occupancy models reveal positive avian responses to restoration of afforested woodlands

Scenario planning is a powerful approach for assessing restoration outcomes under alternative futures. However, developing plausible scenarios remains daunting in complex systems like ecological communities. Here, we used Bayesian multispecies occupancy modeling to develop scenarios to assess woodland restoration outcomes in afforested communities in seven wildlife management areas in...
Authors
Caleb Powell Roberts, Jeffrey W. Doser, Lauren L. Berry, Allison Fowler, Percival M. Marshall, Christopher Middaugh, Karen Rowe, Jessica M. Schmit, Michael Shaw, Kenneth Wilson
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