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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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Evidence for nonlocal sediment transport on hillslopes from fault scarp morphology Evidence for nonlocal sediment transport on hillslopes from fault scarp morphology

Hillslope sediment transport processes such as bioturbation, rainsplash, and granular mechanics occur across the entire planet. Yet, it remains uncertain how these small-scale processes act together to shape landscapes. Longstanding hillslope diffusion theory posits that hillslope processes are spatially limited, whereas new concepts of nonlocal sediment transport argue otherwise...
Authors
Harrison J. Gray, Tyler Doane, Sylvia R. Nicovich, Christopher DuRoss, Ryan D. Gold
By
Geosciences and Environmental Change Science Center, Luminescence Dating Laboratory

Considering multiecosystem trade-offs is critical when leveraging systematic conservation planning for restoration Considering multiecosystem trade-offs is critical when leveraging systematic conservation planning for restoration

Conservationists are increasingly leveraging systematic conservation planning (SCP) to inform restoration actions that enhance biodiversity. However, restoration frequently drives ecological transformations at local scales, potentially resulting in trade-offs among wildlife species and communities. The Conservation Interactions Principle (CIP), coined more than 15 years ago, cautions SCP
Authors
Nicholas J. Van Lanen, C.J. Duchardt, L. Pejchar, J.E. Shyvers, Cameron L. Aldridge
By
Ecosystems Mission Area, Fort Collins Science Center

Timing of and pressure-temperature constraints on deformation in the Toxaway dome, eastern Blue Ridge: Evidence for continuous deformation from the Neoacadian orogeny to the Alleghanian orogeny Timing of and pressure-temperature constraints on deformation in the Toxaway dome, eastern Blue Ridge: Evidence for continuous deformation from the Neoacadian orogeny to the Alleghanian orogeny

Many mountain belts are built through repeated collision, and in the case of orogenies closely spaced in time, determining when one orogeny ends and another begins can be challenging. The southern Appalachian mountains were formed by three mountain-building events closely spaced in time, including the Taconic (ca. 480–440 Ma), Neoacadian (ca. 375–340 Ma), and Alleghanian (ca. 330–265 Ma)...
Authors
Jamie S.F. Levine, Nicholas Edwin Powell, Gabriele Casale, Claire P. Martin
By
Florence Bascom Geoscience Center

From subsidies to stressors: Shifting ecological baselines alter biological responses to nutrients in highly modified agricultural streams From subsidies to stressors: Shifting ecological baselines alter biological responses to nutrients in highly modified agricultural streams

Subsidy–stress gradients offer a useful framework for understanding ecological responses to perturbation and may help inform ecological metrics in highly modified systems. Historic, region-wide shifts from bottomland hardwood forest to row crop agriculture can cause positively skewed impact gradients in alluvial plain ecoregions, resulting in tolerant organisms that typically exhibit a...
Authors
Stephen Edward Devilbiss, Jason M. Taylor, Matthew B. Hicks
By
Lower Mississippi-Gulf Water Science Center

New 40Ar/39Ar eruption ages reveal an important temporal relationship between mafic and silicic volcanism in the Yellowstone Plateau volcanic field New 40Ar/39Ar eruption ages reveal an important temporal relationship between mafic and silicic volcanism in the Yellowstone Plateau volcanic field

The chronology of mafic eruptions and their temporal relation to rhyolitic volcanism in the Yellowstone Plateau volcanic field are poorly known, thereby limiting our understanding of the way(s) in which mafic magmatism drives rhyolitic activity. To address this, we measured 40Ar/39Ar eruption ages on 13 mafic samples collected from Henrys Fork Caldera (eastern Idaho, western United...
Authors
Cole Messa, Kenneth Sims, Mark E. Stelten, Brandi Lawler, Mel Kuntz
By
Volcano Hazards Program, Volcano Science Center

Variation in habitat selection by male Strix nebulosa (Great Gray Owls) across the diel cycle Variation in habitat selection by male Strix nebulosa (Great Gray Owls) across the diel cycle

Despite the long-standing recognition that animals partition activities, for example, across different periods of the day, understanding of how habitat selection varies according to specific temporal periods or behavioral activities remains limited for most species. For example, although much of the animal kingdom is nocturnally active, studies that characterize nocturnal behavior remain
Authors
Katherine B. Gura, Bryan Bedrosian, Susan Patla, Anna D. Chalfoun
By
Cooperative Research Units
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