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Publications

Click below for access to more than 170,000 publications written by USGS scientists over the century-plus history of the bureau.

Filter Total Items: 838

Guam's water resources Guam's water resources

How do climate and humans impact freshwater resources, and how can we plan for change?
Authors
Stephen Gingerich, Victoria Keener, Melissa L. Finucane

Optimizing walking pace to maximize snake detection rate: A visual encounter survey experiment Optimizing walking pace to maximize snake detection rate: A visual encounter survey experiment

Visual encounter survey efforts can be defined and constrained by duration, distance, or both duration and distance simultaneously. This study examines the optimal walking pace that will maximize the number of animal detections within a limited time frame. We predicted that animal sighting rate per unit of distance would decline with increasing pace, but that maximal sighting rate per...
Authors
Bjorn Lardner, Amy A. Yackel Adams, Julie A. Savidge, Robert Reed

The role of nanoparticles in mediating element deposition and transport at hydrothermal vents The role of nanoparticles in mediating element deposition and transport at hydrothermal vents

Precipitation processes in hydrothermal fluids exert a primary control on the eventual distribution of elements, whether that sink is in the subseafloor, hydrothermal chimneys, near-field metalliferous sediments, or more distal in the ocean basin. Recent studies demonstrating abundant nanoparticles in hydrothermal fluids raise questions as to the importance of these nanoparticles...
Authors
Amy Gartman, Alyssa J. Findlay, Mark D. Hannington, Dieter Garbe-Schonberg, John W. Jamieson, Tom Kwasnitschka

Environmental gradients influence differences in leaf functional traits between native and non-native plants Environmental gradients influence differences in leaf functional traits between native and non-native plants

Determining the characteristics of non-native plants that can successfully establish and spread is central to pressing questions in invasion ecology. Evidence suggests that some non-native species establish and spread in new environments because they possess characteristics (functional traits) that allow them to either successfully compete with native residents or fill previously...
Authors
Jonathan J Henn, Stephanie G. Yelenik, Ellen Ingman Damschen

Tsunamis: Stochastic models of generation, propagation, and occurrence Tsunamis: Stochastic models of generation, propagation, and occurrence

The devastating consequences of the 2004 Indian Ocean and 2011 Tohoku-oki tsunamis have led to increased research into many different aspects of the tsunami phenomenon. In this paper, we review research related to the observed complexity and uncertainty associated with tsunami generation, propagation, and occurrence described and analyzed using a variety of stochastic models. In each...
Authors
Eric L. Geist, David Oglesby, Kenny Ryan

Estimated groundwater recharge from a water-budget model incorporating selected climate projections, Island of Maui, Hawai‘i Estimated groundwater recharge from a water-budget model incorporating selected climate projections, Island of Maui, Hawai‘i

Demand for freshwater on the Island of Maui is expected to increase by 45 percent between 2015 and 2035. Groundwater availability on Maui is affected by changes in climate and agricultural irrigation. To evaluate the availability of fresh groundwater under projected future climate conditions and changing agricultural irrigation practices, estimates of groundwater recharge are needed. A...
Authors
Alan Mair, Adam G. Johnson, Kolja Rotzoll, Delwyn S. Oki

Enabling real-time user interaction for decision support: Experiences extending a local agave platform metadata service Enabling real-time user interaction for decision support: Experiences extending a local agave platform metadata service

The University of Hawai'i Information Technology Services Cyber-infrastructure team in partnership with the United States Geological Survey developed the Hawai'i groundwater recharge tool, a decision support tool, as part of the 'Ike Wai Gateway to support water sustainability research for the state of Hawai'i. To enable the development of the tool within the existing University of Hawai...
Authors
Sean B. Cleveland, Jared H. McClean, Kolja Rotzoll, Scot K. Izuka, Gwen A. Jacobs

Measurement of sounds emitted by certain high-resolution geophysical survey systems Measurement of sounds emitted by certain high-resolution geophysical survey systems

Scientific questions regarding the impact of anthropomorphic noise in the marine environment have resulted in an increasing number of regulatory requirements and precautionary mitigation strategies to reduce the risks associated with high-resolution marine geophysical surveys performed in waters subjected to government jurisdiction. An example of regulatory frameworks includes the Marine...
Authors
Steven E Crocker, Frank D Fratantonio, Patrick E. Hart, David S. Foster, Thomas F. O’Brien, Stanley Labak

Screening and biosecurity for White-nose Fungus Pseudogymnoascus destructans (Ascomycota: Pseudeurotiaceae) in Hawai‘i Screening and biosecurity for White-nose Fungus Pseudogymnoascus destructans (Ascomycota: Pseudeurotiaceae) in Hawai‘i

Introduced pathogens causing emerging infectious diseases (EIDs) are serious contemporary threats to animal, plant, and ecosystem health. The invasive fungus, Pseudogymnoascus destructans, has established populations of European origin in North America, resulting in mass mortality of several hibernating bat species. Extensive monitoring for this pathogen exists in Europe and North...
Authors
Violeta Zhelyazkova, Nia Toshkova, Serena E Dool, Frank Bonaccorso, Corinna A. Pinzari, Kristina Montoya-Aiona, Sebastien J Puechmaille

Extreme coastal water level in Washington state: Guidance to support sea level rise planning Extreme coastal water level in Washington state: Guidance to support sea level rise planning

This document provides guidelines for assessing exposure to future coastal flooding during extreme coastal water level events – whether these are due to tides, surge, wave run-up, or, more likely, a combination of the three. These guidelines provide information about the current and future magnitude of extreme coastal water levels across Washington State and the underlying processes that...
Authors
I.M. Miller, Nathan R. vanArendonk, Eric E. Grossman
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