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: 756
Groundwater-level, groundwater-temperature, and barometric-pressure data, July 2017 to February 2018, Hālawa Area, Oʻahu, Hawaiʻi
The Red Hill Bulk Fuel Storage Facility, operated by the U.S. Navy and located in the Hālawa area, Oʻahu, Hawaiʻi, includes 20 underground storage tanks that can hold a total of 250 million gallons of fuel. In January 2014, the U.S. Navy notified the Hawaiʻi Department of Health and U.S. Environmental Protection Agency of release of an estimated 27,000 gallons of fuel from the Red Hill Bulk Fuel S
Authors
Jackson N. Mitchell, Delwyn S. Oki
Formation and occurrence of ferromanganese crusts: Earth’s storehouse for critical metals
Marine ferromanganese oxide crusts (Fe–Mn crusts) are potentially important metal resources formed on the seafloor by precipitation of dissolved and colloidal components from ambient seawater onto rocky surfaces. The unique properties and slow growth rates of the crusts promote adsorption of numerous elements from seawater: some, such as Te and Co, reach concentrations rarely encountered elsewhere
Authors
Paul A. Lusty, James R. Hein, Pierre Josso
Mineralization at oceanic transform faults and fracture zones
Mineral formation in the modern oceans can take place over millions of years as a result precipitation from ambient ocean water, or orders of magnitude more rapidly from hydrothermal activity related to magmatic and tectonic processes. Here, we review associations between transform faults and related fracture zones and marine minerals. We define marine transform faults as strike-slip or oblique fa
Authors
Amy Gartman, James R. Hein
Floristic and climatic reconstructions of two Lower Cretaceous successions from Peru
Climate during the Early Cretaceous in tropical South America has often been reconstructed as arid. However, some areas seem to have been humid. We reconstructed the floristic composition of two tropical stratigraphic successions in Peru using quantitative palynology (rarefied species richness and abundance), and used the abundance of aridity vs. humidity indicator species to infer the predominant
Authors
Paula J. Mejia-Velasquez, Steven R. Manchester, Carlos A. Jaramillo, Luiz Quiroz, Lucas B. Fortini
Patch age since disturbance drives patch dynamics for flycatchers breeding in both reservoir and riverine habitat
Species dependent upon early-successional landscapes often occupy patches at different stages of recovery after disturbance. The demographic processes that drive patch dynamics in these systems have rarely been described but are important for developing effective conservation and management plans, especially when humans have modified the timing and intensity of disturbances that drive regeneration
Authors
Tad C Theimer, Mark K. Sogge, Eben H. Paxton
Geochemical sourcing of runoff from a young volcanic watershed to an impacted coral reef in Pelekane Bay, Hawaii
Runoff of sediment and other contaminants from developed watersheds threatens coastal ecosystems and services. A sediment geochemical sourcing study was undertaken on a sediment-impacted coral reef flat to identify terrestrial sediment sources and how these changed over time. Geochemical signatures were identified for watershed soils that formed on Hawaiian basaltic and alkalic lavas using relativ
Authors
Renee K. Takesue, Curt D. Storlazzi
The risk of rodent introductions from shipwrecks to seabirds on Aleutian and Bering Sea islands
Accidental introductions of rodents present one of the greatest threats to indigenous island biota, especially seabirds. On uninhabited remote islands, such introductions are likely to come from shipwrecks. Here we use a comprehensive database of shipwrecks in Western Alaska to model the frequency of shipwrecks per Aleutian and Bering Sea island, taken as a proxy for the threat of rodent introduct
Authors
Martin Renner, Eric Nelson, Jordan Watson, Alan Haynie, Aaron Poe, Martin D. Robards, Steve C. Hess
Density estimation of sound-producing terrestrial animals using single automatic acoustic recorders and distance sampling
Obtaining accurate information on the distribution, density, and abundance of animals is an important first step toward their conservation. Methodological approaches using automatic acoustic recorders for species that communicate acoustically are gaining increased interest because of their advantages over traditional sampling methods. In this study, we created and evaluated a protocol to estimate
Authors
Esther Sebastián-González, Richard J. Camp, Ann M. Tanimoto, Priscilla Monteiro de Oliveira, Bruna Barreto Lima, Tiago A. Marques, Patrick J. Hart
Research and management priorities for Hawaiian forest birds
Hawai‘i's forest birds face a number of conservation challenges that, if unaddressed, will likely lead to the extinction of multiple species in the coming decades. Threats include habitat loss, invasive plants, non-native predators, and introduced diseases. Climate change is predicted to increase the geographic extent and intensity of these threats, adding urgency to implementation of tractable co
Authors
Eben H. Paxton, Megan Laut, John P. Vetter, Steve J. Kendall
Extreme drought alters frequency and reproductive success of floaters in Willow Flycatchers
Changes in habitat quality, including those caused by extreme events like droughts and floods, could alter costs and benefits of territoriality and thereby the prevalence and reproductive consequences for individuals capable of breeding that do not do so (floaters). We studied floating behavior in a population of Southwestern Willow Flycatchers (Empidonax traillii extimus) in central Arizona durin
Authors
Tad Theimer, Mark K. Sogge, Suzanne N. Cardinal, Scott L. Durst, Eben H. Paxton
Potential impacts of projected climate change on vegetation-management strategies in Hawai‘i Volcanoes National Park
Climate change is expected to alter the seasonal and annual patterns of rainfall and temperature in the Hawaiian Islands. Land managers and other responsible agencies will need to know how plant-species habitats will change over the next century in order to manage these resources effectively. This issue is a major concern for resource managers at Hawai‘i Volcanoes National Park (HAVO), where curre
Authors
Richard J. Camp, S. Paul Berkowitz, Kevin W. Brink, James D. Jacobi, Rhonda Loh, Jonathan Price, Lucas B. Fortini
The epidemiology of avian pox and interaction with avian malaria in Hawaiian forest birds
Despite the purported role of avian pox (Avipoxvirus spp.) in the decline of endemic Hawaiian birds, few studies have been conducted on the dynamics of this disease, its impact on free‐living avian populations, or its interactions with avian malaria (Plasmodium relictum). We conducted four longitudinal studies of 3–7 yr in length and used generalized linear models to evaluate cross‐sectional preva
Authors
Michael Samuel, Bethany L. Woodworth, Carter T. Atkinson, Patrick J. Hart, Dennis Lapointe