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
Numerical simulation of the effects of groundwater withdrawal and injection of high-salinity water on salinity and groundwater discharge, Kaloko-Honokōhau National Historical Park, Hawaiʻi
Kaloko-Honokōhau National Historical Park (KAHO) is located on the west coast of the island of Hawaiʻi and contains water resources exposed in fishponds, anchialine pools, and marine waters that are cultural resources and that provide habitat for threatened, endangered, and other culturally important native species. KAHO’s water resources are sustained by and dependent on groundwater discharge. In
Authors
Delwyn S. Oki
Landscape level effects of invasive plants and animals on water infiltration through Hawaiian tropical forests
Watershed degradation due to invasion threatens downstream water flows and associated ecosystem services. While this topic has been studied across landscapes that have undergone invasive-driven state changes (e.g., native forest to invaded grassland), it is less well understood in ecosystems experiencing within-system invasion (e.g. native forest to invaded forest). To address this subject, we con
Authors
Lucas Fortini, Christina Leopold, Kimberlie Perkins, Oliver A. Chadwick, Stephanie G. Yelenik, James D. Jacobi, Kaiena Bishaw, Makani Gregg
Efficacy of detection canines for avian botulism surveillance and mitigation
Hawai'i's endangered waterbirds have experienced epizootics caused by ingestion of prey that accumulated a botulinum neurotoxin produced by the anaerobic bacterium Clostridium botulinum (avian botulism; Type C). Waterbird carcasses, necrophagous flies, and their larvae initiate and spread avian botulism, a food-borne paralytic disease lethal to waterbirds. Each new carcass has potential to develop
Authors
Michelle H Reynolds, Kyoko N Johnson, Eleni Schvaneveldt, Dan L Dewy, Kim J Uyehara, Steven C. Hess
Population density, distribution, and trends of landbirds in the National Park of American Samoa, Ta‘ū and Tutuila Units (2011–2018)
The National Park of American Samoa (NPSA) was surveyed for landbirds from June through July, 2018. Surveys were conducted using point-transect distance sampling methods to estimate bird densities. This information provides the second datum in the time-series of landbird monitoring for long-term trends in landbird distribution, density, and abundance within NPSA. The Ta‘ū Unit and Tutuila Unit, ea
Authors
Seth Judge, Richard J. Camp, Visa Vaivai, Patrick J. Hart
Automated telemetry reveals post-reintroduction exploratory behavior and movement patterns of an endangered corvid, ʻAlalā (Corvus hawaiiensis) in Hawaiʻi, USA
Continuous movement monitoring is a powerful tool for evaluating reintroduction techniques and assessing how well reintroduced animals are adjusting to the wild. However, to date, continuous monitoring has only occurred for large-bodied species capable of carrying heavy tracking devices. In this study we used an automated VHF radio telemetry array to investigate the exploratory behavior and moveme
Authors
Jennifer R Smetzer, Alison L Greggor, Kristina L. Paxton, Bryce M Masuda, Eben H. Paxton
Cloud water interception in Hawai‘i: Developing capacity to characterize the spatial patterns and effects on water and ecological processes responses in Hawai‘i
Cloud-water interception (CWI) is the process by which fog or cloud water droplets are captured and accumulate on the leaves and branches of plants, some of which drips to the ground. Prior studies in Hawai'i indicate that CWI is highly variable and can contribute substantially to total precipitation. In this study, we monitored CWI and other processes at five mountain field sites on the Islands o
Authors
Han Tseng, Lucas Fortini, Alan Mair, Aurora Kagawa-Viviani, Stephanie G. Yelenik, Yoshiyuki Miyazawa, Michael A Nullet, Joseph Kennedy, John DeLay, Christina Leopold, Thomas Giambelluca
Recent recovery and expansion of Guam’s locally endangered Såli (Micronesian Starling) Aplonis opaca population in the presence of the invasive brown treesnake
Assessing the impacts of invasive predators on the demography and distribution of native species is critical for understanding mechanisms of species persistence and informing the design of recovery programmes. On the oceanic island of Guam, the introduction of the predatory brown treesnake Boiga irregularis after World War II caused the near-total loss of the native forest avifauna. Localised snak
Authors
Henry Pollock, Martin Kastner, Gary Wiles, Hugo Thierry, Laura Dueñas, Eben H. Paxton, Nicole Suckow, Jeff Quitugua, Haldre Rogers
Volcanic Aquifers of Hawai‘i—Construction and calibration of numerical models for assessing groundwater availability on Kaua‘i, O‘ahu, and Maui
Steady-state numerical groundwater-flow models were constructed for the islands of Kaua‘i, O‘ahu, and Maui to enable quantification of the hydrologic consequences of withdrawals and other stresses that can place limits on groundwater availability. The volcanic aquifers of Hawai‘i supply nearly all drinking water for the islands’ residents, freshwater for diverse industries, and natural discharge t
Authors
Scot K. Izuka, Kolja Rotzoll, Tracy Nishikawa
Understanding metrics of stress in the context of invasion history: The case of the brown treesnake (Boiga irregularis)
Invasive species can exert rapid depletion of resources after introduction and, in turn, affect their own population density. Additionally, management actions can have direct and indirect effects on demography. Physiological variables can predict demographic change but are often restricted to snapshots-in-time and delayed confirmation of changes in population density reduces their utility. To eval
Authors
N Claunch, I. Moore, H Waye, L Schoenle, S Oakey, Robert Reed, Christina Romagosa
Multi-region assessment of chemical mixture exposures and predicted cumulative effects in USA wadeable urban/agriculture-gradient streams
Chemical-contaminant mixtures are widely reported in large stream reaches in urban/agriculture-developed watersheds, but mixture compositions and aggregate biological effects are less well understood in corresponding smaller headwaters, which comprise most of stream length, riparian connectivity, and spatial biodiversity. During 2014–2017, the U.S. Geological Survey (USGS) measured 389 unique orga
Authors
Paul M. Bradley, Celeste A. Journey, Kristin M. Romanok, Sara E. Breitmeyer, Daniel T. Button, Daren M. Carlisle, Bradley Huffman, Barbara Mahler, Lisa H. Nowell, Sharon L. Qi, Kelly L. Smalling, Ian R. Waite, Peter C. Van Metre
By
Ecosystems Mission Area, Water Resources Mission Area, Contaminant Biology, Environmental Health Program, Toxic Substances Hydrology, California Water Science Center, Colorado Water Science Center, Maryland-Delaware-D.C. Water Science Center, New Jersey Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, South Atlantic Water Science Center (SAWSC)
Effectiveness of rapid 'ōhi'a death management strategies at a focal disease outbreak on Hawai'i Island
The ongoing spread of rapid ‘ōhi‘a death (ROD) in the Hawaiian Islands threatens the long-term sustainability of ‘ōhi‘a lehua (Metrosideros polymorpha) forests throughout the state. First identified in the Puna district of Hawai‘i Island in 2014, the disease caused by the novel fungi Ceratocystis lukuohia and Ceratocystis huliohia has now spread island-wide and was recently detected on Kaua‘i, O‘a
Authors
Kylle Roy, Carolina Granthon, Robert W. Peck, Carter T. Atkinson
Multiple feedbacks due to biotic interactions across trophic levels can lead to persisten novel conditions that hinder restoration
Unlike traditional successional theory, Alternate Stable Equilibrium (ASE) theory posits that more than one community state is possible in a single environment, depending on the order that species arrive. ASE theory is often invoked in management situations where initial stressors have been removed, but native-dominated communities are not returning to degraded areas. Fundamental to this theory is
Authors
Stephanie G. Yelenik, Carla M. D'Antonio, Evan M Rehm, Iain Caldwell