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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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Marshbird response to herbicide control of cattail in northwestern Minnesota Marshbird response to herbicide control of cattail in northwestern Minnesota

Wetlands provide essential habitat for a wide variety of wildlife species. In the once wetland-rich Prairie Pothole Region and adjacent areas of central North America, many wetlands have been converted to agricultural production. Many remaining wetlands experience ecological change via the invasion and spread of non-native plant species, such as non-native narrowleaf (Typha angustifolia)...
Authors
Nina M. Hill, Douglas H. Johnson, Thomas R. Cooper, Althea A. Archer, David E. Andersen

Biological responses of Pacific herring embryos to crude oil are quantifiable at exposure levels below conventional limits of quantitation for PAHs in water and tissues Biological responses of Pacific herring embryos to crude oil are quantifiable at exposure levels below conventional limits of quantitation for PAHs in water and tissues

Pacific herring (Clupea pallasii), a cornerstone of marine food webs, generally spawn on marine macroalgae in shallow nearshore areas that are disproportionately at risk from oil spills. Herring embryos are also highly susceptible to toxicity from chemicals leaching from oil stranded in intertidal and subtidal zones. The water-soluble components of crude oil trigger an adverse outcome...
Authors
John P. Incardona, Tiffany L. Linbo, James R. Cameron, Barbara L. French, Jennie L. Bolton, Jacob L. Gregg, Carey E. Donald, Paul Hershberger, Nathaniel L. Scholz

A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii) A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii)

Many marine fish species are experiencing population declines, but their extinction risk profiles are largely understudied in comparison to their terrestrial vertebrate counterparts. Selective extinction of marine fish species may result in rapid alteration of the structure and function of ocean ecosystems. In this study, we compiled an ecological trait dataset for 8,185 species of...
Authors
Trevor M. Bak, Richard J. Camp, Noel A. Heim, Douglas J. McCauley, Jonathan L. Payne, Matthew L Knope

Assessing the ecological risk of heavy metal sediment contamination from Port Everglades Florida USA Assessing the ecological risk of heavy metal sediment contamination from Port Everglades Florida USA

Port sediments are often contaminated with metals and organic compounds from anthropogenic sources. Remobilization of sediment during a planned expansion of Port Everglades near Fort Lauderdale, Florida (USA) has the potential to harm adjacent benthic communities, including coral reefs. Twelve sediment cores were collected from four Port Everglades sites and a control site; surface...
Authors
Dimitrios G. Giarikos, Laura White, Andre Daniels, Radleigh G. Santos, Paul E. Baldauf, Amy C. Hirons

Data mining reveals tissue-specific expression and host lineage-associated forms of Apis mellifera filamentous virus Data mining reveals tissue-specific expression and host lineage-associated forms of Apis mellifera filamentous virus

Apis mellifera filamentous virus (AmFV) is a large double-stranded DNA virus of uncertain phylogenetic position that infects honey bees (Apis mellifera). Little is known about AmFV evolution or molecular aspects of infection. Accurate annotation of open-reading frames (ORFs) is challenged by weak homology to other known viruses. This study was undertaken to evaluate ORFs (including...
Authors
Robert S. Cornman

Living on the edge: Predicting songbird response to management and environmental changes across an ecotone Living on the edge: Predicting songbird response to management and environmental changes across an ecotone

Effective wildlife management requires robust information regarding population status, habitat requirements, and likely responses to changing resource conditions. Single-species management may inadequately conserve communities and result in undesired effects to non-target species. Thus, management can benefit from understanding habitat relationships for multiple species. Pinyon pine and...
Authors
Nicholas J. Van Lanen, Adrian P. Monroe, Cameron L. Aldridge

Determination and prediction of micro scale rare earth element geochemical associations in mine drainage treatment wastes Determination and prediction of micro scale rare earth element geochemical associations in mine drainage treatment wastes

Acid mine drainage (AMD) has been proposed as a novel source of rare earth elements (REE), a group of elements that includes critical metals for clean energy and modern technologies. REE are sequestered in the Fe–Al–Mn-rich precipitates produced during the treatment of AMD. These AMD solids are typically managed as waste but could be a REE source. Here, results from AMD solids...
Authors
Benjamin C. Hedin, Mengling Y. Stuckman, Charles A. Cravotta, Christina L. Lopano, Rosemary C. Capo

Recharge estimation approach in a data-scarce semi-arid region, Northern Ethiopian Rift Valley Recharge estimation approach in a data-scarce semi-arid region, Northern Ethiopian Rift Valley

Sustainable management of groundwater resources highly relies on the accurate estimation of recharge. However, accurate recharge estimation is a challenge, especially in data-scarce regions, as the existing models are data-intensive and require extensive parameterization. This study developed a process-based hydrologic model combining local and remotely sensed data for characterizing...
Authors
Sisay Simachew Mekonen, Scott Boyce, Abdella K. Mohammed, Lorraine E. Flint, Alan L Flint, Markus Disse

Carbon dioxide (CO2) gas and eDNA monitoring as tools for eradicating invasive fish from anchialine pools in Hawai‘i Carbon dioxide (CO2) gas and eDNA monitoring as tools for eradicating invasive fish from anchialine pools in Hawai‘i

Invasive fish can profoundly affect communities they invade. In Hawai‘i, invasive fishes have become established in many anchialine pools, threatening the persistence of resident invertebrates, including several endangered species. Tools to eradicate invasive fishes from these pools are lacking. This study tested the efficacy of carbon dioxide (CO2) gas diffused into anchialine pool...
Authors
Robert W. Peck, Maya Munnstermann, Malia Hayes, Carter T. Atkinson, Sallie Beavers, Aaron R. Cupp, Paul C. Banko

Time-dependent weakening of granite at hydrothermal conditions Time-dependent weakening of granite at hydrothermal conditions

The evolution of a fault's frictional strength during the interseismic period is a critical component of the earthquake cycle, yet there have been relatively few studies that examine the time-dependent evolution of strength at conditions representative of seismogenic depths. Using a simulated fault in Westerly granite, we examined how frictional strength evolves under hydrothermal...
Authors
Tamara Nicole Jeppson, David A. Lockner, Nicholas M. Beeler, Diane E. Moore

Linking meso-scale spatial variation in methylmercury production to bioaccumulation in tidal marsh food webs Linking meso-scale spatial variation in methylmercury production to bioaccumulation in tidal marsh food webs

Differences in sediment biogeochemistry among tidal marsh features with different hydrological and geomorphological characteristics, including marsh interiors, marsh edges, first-order channels, and third-order channels, can result in spatial variation in MeHg production and availability. To better understand the link between MeHg production in sediments and bioaccumulation in primary...
Authors
Laurie Anne Hall, Isa Woo, Mark C. Marvin-DiPasquale, John Y. Takekawa, David P. Krabbenhoft, Donald Yee, Letitia Grenier, Susan E.W. De La Cruz
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