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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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Do contrasting patterns of migration movements and disease outbreaks between congeneric waterfowl species reflect differing immunity? Do contrasting patterns of migration movements and disease outbreaks between congeneric waterfowl species reflect differing immunity?

Long-distance migrations influence the dynamics of hostpathogen interactions and understanding the role of migratory waterfowl in the spread of the highly pathogenic avian influenza viruses (HPAIV) is important. While wild geese have been associated with outbreak events, disease ecology of closely related species has not been studied to the same extent. The swan goose (Anser cygnoides)...
Authors
Shenlai Yin, Yanjie Xu, Nyambyar Batbayar, John Y. Takekawa, Yali Si, Diann Prosser, Scott H. Newman, Herbert H.T. Prins, Willem F. de Boer

Assessing the population impacts and cost‐effectiveness of a conservation translocation Assessing the population impacts and cost‐effectiveness of a conservation translocation

Managers often move, or translocate, organisms into habitats that are assumed to be suitable, however the consequences of these translocations are usually not rigorously assessed. Robust assessment of these management experiments should consider impacts to both donor and recipient populations and compare the cost‐effectiveness of translocations to other actions.Here we evaluate...
Authors
Charles B. Yackulic, David R. Van Haverbeke, Maria C. Dzul, Lucas S. Bair, Kirk L. Young

Climate drivers of large magnitude snow avalanche years in the U.S. northern Rocky Mountains Climate drivers of large magnitude snow avalanche years in the U.S. northern Rocky Mountains

Large magnitude snow avalanches pose a hazard to humans and infrastructure worldwide. Analyzing the spatiotemporal behavior of avalanches and the contributory climate factors is important for understanding historical variability in climate-avalanche relationships as well as improving avalanche forecasting. We used established dendrochronological methods to develop a long-term (1867–2019)...
Authors
Erich H. Peitzsch, Gregory T. Pederson, Karl W. Birkeland, Jordy Hendrikx, Daniel B. Fagre

Principles for collaborative risk communication: Reducing landslide losses in Puerto Rico Principles for collaborative risk communication: Reducing landslide losses in Puerto Rico

Landslides are frequent and damaging natural hazards that threaten the people and the natural and built environments of Puerto Rico. In 2017, more than 70,000 landslides were triggered across the island by heavy rainfall from Hurricane María, prompting requests by local professionals for landslide education and outreach materials. This article describes a novel collaborative risk...
Authors
Jocelyn West, Lindsay A. Davis, Raquel Lugo Bendezu, Yahaira Alvarez Gandia, K. Stephen Hughes, Jonathan W. Godt, Lori Peek

Gradient self-potential logging in the Rio Grande to identify gaining and losing reaches across the Mesilla Valley Gradient self-potential logging in the Rio Grande to identify gaining and losing reaches across the Mesilla Valley

The Rio Grande/Río Bravo del Norte (hereinafter referred to as the “Rio Grande”) is the primary source of recharge to the Mesilla Basin/Conejos-Médanos aquifer system in the Mesilla Valley of New Mexico and Texas. The Mesilla Basin aquifer system is the U.S. part of the Mesilla Basin/Conejos-Médanos aquifer system and is the primary source of water supply to several communities along the...
Authors
Scott Ikard, Andrew Teeple, Delbert Humberson

Seasonal activity and diets of bats at uranium mines and adjacent areas near the Grand Canyon Seasonal activity and diets of bats at uranium mines and adjacent areas near the Grand Canyon

Little information exists on the habitat use and feeding ecology of insectivorous bats in arid ecosystems, especially at and near uranium mines in northern Arizona, within the Grand Canyon watershed. In 2015–2016, we conducted mist-netting, nightly acoustic monitoring (>1 year), and diet analyses of bats, as well as insect sampling, at 2 uranium mines (Pinenut and Arizona 1) with water...
Authors
Ernest W. Valdez, Mollie K Hanttula, Jo Ellen Hinck

Using fecal DNA and closed-capture models to estimate feral horse population size Using fecal DNA and closed-capture models to estimate feral horse population size

Accurate population estimates provide the foundation for managing feral horses (Equus caballus ferus) across the western United States. Certain feral horse populations are protected by the Wild and Free-Roaming Horses and Burros Act of 1971 and managed by the Bureau of Land Management (BLM) or the United States Forest Service on designated herd management areas (HMAs) or wild horse...
Authors
Kathryn A. Schoenecker, Sarah R. B. King, L. Stefan Ekernas, Sara J. Oyler-McCance

Large-scale wildfire reduces population growth in a peripheral population of sage-grouse Large-scale wildfire reduces population growth in a peripheral population of sage-grouse

Drastic increases in wildfire size and frequency threaten western North American sagebrush (Artemisia L. spp.) ecosystems. At relatively large spatial scales, wildfire facilitates type conversion of sagebrush-dominated plant communities to monocultures of invasive annual grasses (e.g., Bromus tectorum L.). Annual grasses provide fine fuels that promote fire spread, contributing to a...
Authors
Ian F Dudley, Peter S. Coates, Brian G. Prochazka, Shawn T. O’Neil, Scott C. Gardner, David J. Delehanty

Zircon geochronology and geochemistry of Quaternary rhyolite domes of the Coso volcanic field, Inyo County, California Zircon geochronology and geochemistry of Quaternary rhyolite domes of the Coso volcanic field, Inyo County, California

The Quaternary Coso volcanic field (CVF) is a compositionally bimodal volcanic field located within a releasing bend along the eastern range-front Sierra Nevada fault zone in California's southern Owens Valley. The erupted products of CVF silicic magmatism since ~1 Ma comprise 38 high-silica rhyolite domes, with the volumetric majority (~99%) of rhyolite emplaced within the past ~300 ka...
Authors
Seth D. Burgess, Matthew Coble, Jorge A. Vazquez

Coral reef restorations can be optimized to reduce coastal flooding hazards Coral reef restorations can be optimized to reduce coastal flooding hazards

Coral reefs are effective natural coastal flood barriers that protect adjacent communities. Coral degradation compromises the coastal protection value of reefs while also reducing their other ecosystem services, making them a target for restoration. Here we provide a physics-based evaluation of how coral restoration can reduce coastal flooding for various types of reefs. Wave-driven...
Authors
Floortje Roelvink, Curt D. Storlazzi, Ap van Dongeren, Stuart Pearson

Efficacy of fenbendazole and ivermectin against Trichuris spp. in African green monkeys (Chlorocebus sabaeus) in Barbados West Indies Efficacy of fenbendazole and ivermectin against Trichuris spp. in African green monkeys (Chlorocebus sabaeus) in Barbados West Indies

Trichuris spp. are common helminths in NHP, and benzimidazoles and avermectins have both been used to treat these intestinal parasites. The current study compared the efficacy of fenbendazole and ivermectin against natural infection of Trichuris spp. in African green monkeys (Chlorocebus sabaeus). Anthelmintic-naive animals (n = 65) were randomly assigned to 4 groups: an untreated...
Authors
Kamara J. R. Rhynd, Daniel P. Walsh, Linnell C. M. Arthur-Banfield

Endangered Australian top predator is frequently exposed to anticoagulant rodenticides Endangered Australian top predator is frequently exposed to anticoagulant rodenticides

Anticoagulant rodenticides (ARs) used to control mammalian pest populations cause secondary exposure of predatory species throughout much of the world. It is important to understand the drivers of non-target AR exposure patterns as context for assessing long-term effects and developing effective mitigation for these toxicants. In Australia, however, little is known about exposure and...
Authors
James M. Pay, Todd E. Katzner, Clare E. Hawkins, Leon A. Barmuta, William E. Brown, Amelia J. Koch, Nick J. Mooney, Elissa Z. Cameron
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