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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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Coral reef restoration can reduce coastal contamination and pollution hazards Coral reef restoration can reduce coastal contamination and pollution hazards

Coral reef restoration can reduce the wave-driven flooding for coastal communities. However, this protection has yet to be assessed in terms of the reduced risk of flood-driven environmental contamination. Here we provide the first high-resolution valuation of the reduction of flood-related land-based environmental pollution provided by potential coral reef restoration. Along Florida’s...
Authors
Marina Rottmueller, Curt D. Storlazzi, Fabian Frick

“Leaky weirs” capture alluvial deposition and enhance seasonal mountain-front recharge in dryland streams “Leaky weirs” capture alluvial deposition and enhance seasonal mountain-front recharge in dryland streams

“Leaky weirs” are rock structures installed in dryland streams, which are anchored into exposed bedrock, loosely cemented, and designed to allow water to slowly pass through. They are being tested at a ranch in southeastern Arizona, USA, to restore and conserve the historic range and desert wetlands. Data are collected to assess how leaky weirs impact surface water, subsurface water, and
Authors
Laura M. Norman, Kristine; Uhlman, Hanna Coy, Natalie R. Wilson, Andrew M. Bennett, Floyd Gray, Kurt T. Ehrenberg

Perpetuation of avian influenza from molt to fall migration in wild Swan Geese (Anser cygnoides): An agent-based modeling approach Perpetuation of avian influenza from molt to fall migration in wild Swan Geese (Anser cygnoides): An agent-based modeling approach

Wild waterfowl are considered to be the reservoir of avian influenza, but their distinct annual life cycle stages and their contribution to disease dynamics are not well understood. Studies of the highly pathogenic avian influenza (HPAI) virus have primarily focused on wintering grounds, where human and poultry densities are high year-round, compared with breeding grounds, where...
Authors
John Takekawa, Chang-Yong Choi, Diann J. Prosser, Jeffery D. Sullivan, Nyambaya Batbayar, Xiangming Xiao

Understanding and managing introduction pathways into protected areas in a changing climate Understanding and managing introduction pathways into protected areas in a changing climate

The Kunming-Montreal Global Biodiversity Framework 2030 calls for the conservation of 30% of the world’s ecosystems, focusing on protecting areas vital to biodiversity, identifying and managing invasive species introduction pathways, and minimizing the impacts of climate change on biodiversity. While protected areas (PAs) have historically limited the introduction, establishment, and...
Authors
Deah Lieurance, Susan Canavan, Katelyn T. Faulkner, Kathryn A. O’Shaughnessy, Julie L. Lockwood, Elliott W. Parsons, Julian D. Avery, Wesley M. Daniel

Decomposing the Tea Bag Index and finding slower organic matter loss rates at higher elevations and deeper soil horizons in a minerogenic salt marsh Decomposing the Tea Bag Index and finding slower organic matter loss rates at higher elevations and deeper soil horizons in a minerogenic salt marsh

Environmental gradients can affect organic matter decay within and across wetlands and contribute to spatial heterogeneity in soil carbon stocks. We tested the sensitivity of decay rates to tidal flooding and soil depth in a minerogenic salt marsh using the Tea Bag Index (TBI). Tea bags were buried at 10 and 50 cm depths across an elevation gradient in a subtropical Spartina alterniflora...
Authors
Satyatejas G. Reddy, W. Reilly Farrell, Fengrun Wu, Steven C. Pennings, Jonathan Sanderman, Meagan J. Eagle, Christopher Craft, Amanda C. Spivak

The transition from resistance to acceptance: Managing a marine invasive species in a changing world The transition from resistance to acceptance: Managing a marine invasive species in a changing world

Marine invasive species can transform coastal ecosystems, yet mitigating their effects can be difficult, and even impractical. Often, marine invasive species are managed at poorly matched spatial scales, and at the same time, rates of spread and establishment are increasing under climate change and can outpace resources available for population suppression. These circumstances challenge
Authors
Abigail G. Keller, Timothy D. Counihan, Edwin D. Grosholz, Carl Boettiger

Towards seamless global 30-meter terrestrial monitoring: Evaluating 2022 cloud free coverage of harmonized Landsat and Sentinel-2 (HLS) V2.0 Towards seamless global 30-meter terrestrial monitoring: Evaluating 2022 cloud free coverage of harmonized Landsat and Sentinel-2 (HLS) V2.0

Global observations at 30-m ground sampling distance (GSD) are now possible at a cadence of 1-3 days by combining Landsat 8 and 9 with Sentinel-2A and -2B satellites. Previous studies characterizing pixel-level Landsat-class measurement frequency used data from different sources but offered little information on observation availability after rigorous quality screening. This study...
Authors
Qiang Zhou, Christopher Neigh, Junchang Ju, Philip Dabney, Bruce Cook, Zhe Zhu, Christopher J. Crawford, Ferran Gascon, Peter Strobl, Madhu Sridhar

Combining multisite tsunami and deformation modeling to constrain slip distributions for the 1700 C.E. Cascadia earthquake Combining multisite tsunami and deformation modeling to constrain slip distributions for the 1700 C.E. Cascadia earthquake

A major earthquake ruptured the Cascadia subduction zone (CSZ) on 26 January 1700. Key paleoseismic evidence associated with this event include tsunami deposits, stratigraphic evidence of coastal coseismic subsidence, written Japanese records of a tsunami unaccompanied by earthquake shaking, and margin‐wide turbidites found offshore and in lacustrine environments. Despite this wealth of
Authors
David Small, Diego Melgar, SeanPaul La Selle, Andrew J Meigs

Earthquake recurrence estimates for northern Caribbean faults from combinatorial optimization Earthquake recurrence estimates for northern Caribbean faults from combinatorial optimization

We use combinatorial optimization to find the optimal spatial distribution of random samples of earthquakes (≥6.5) that minimize the misfit in target slip rates for all faults in the northeast Caribbean, and we derive magnitude-frequency relationships with uncertainties for these faults. Slip rates for many faults are derived from GPS block models, not direct measurements, because of...
Authors
Uri S. ten Brink, Eric L. Geist

Landslide-channel feedbacks amplify channel widening during floods Landslide-channel feedbacks amplify channel widening during floods

Channel widening is a major hazard during floods, particularly in confined mountainous catchments. However, channel widening during floods is not well understood and not always explained by hydraulic variables alone. Floods in mountainous regions often coincide with landslides triggered by heavy rainfall, yet landslide-channel interactions during a flood event are not well known or...
Authors
Georgina L. Bennett, Diego Panici, Francis K. Rengers, Jason W. Kean, Sara L. Rathburn

Groundwater flowpath characteristics drive variability in per- and polyfluoroalkyl substances (PFAS) loading across a stream-wetland system Groundwater flowpath characteristics drive variability in per- and polyfluoroalkyl substances (PFAS) loading across a stream-wetland system

Groundwater-dependent ecosystems in areas with industrial land use are at risk of exposure to a PFAS chemicals. We investigated one such system with several known PFAS source areas, where high and low permeability sediments (glacial) coupled with groundwater-lake and groundwater/surface-water interactions created complex ‘source to seep’ dynamics. Using heat-tracing and chemical methods...
Authors
David M. Rey, Martin A. Briggs, Andrea K. Tokranov, Hayley Gale Lind, Patrick Thomas Scordato, Ramona Iery, Henry Moore, L. Slater, Denis R. LeBlanc

Biotic and abiotic drivers of ecosystem temporal stability in herbaceous wetlands in China Biotic and abiotic drivers of ecosystem temporal stability in herbaceous wetlands in China

Maintaining the stability of ecosystems is critical for supporting essential ecosystem services over time. However, our understanding of the contribution of the diverse biotic and abiotic factors to this stability in wetlands remains limited. Here, we combined data from a field vegetation survey of 725 herbaceous wetland sites in China with remote sensing information from the Enhanced...
Authors
Guodong Wang, Nanlin Hu, Yann Hautier, Beth A. Middleton, Ming Wang, Meiling Zhao, Jingci Meng, Zijun Ma, Bo Liu, Yanjie Liu, Mingkai Jiang
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