Petrologic insights into basaltic volcanism at historically active Hawaiian volcanoes
Rosalind T. Helz, David A. Clague, Thomas W. Sisson, Carl R. Thornber
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-6
Study of the petrology of Hawaiian volcanoes, in particular the historically active volcanoes on the Island of Hawai‘i, has long been of worldwide scientific interest. When Dr. Thomas A. Jaggar, Jr., established the Hawaiian Volcano Observatory (HVO) in 1912, detailed observations on basaltic activity at Kīlauea and Mauna Loa volcanoes...
The Hawaiian Volcano Observatory: A natural laboratory for studying basaltic volcanism
Robert I. Tilling, James P. Kauahikaua, Steven R. Brantley, Christina A. Neal
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-1
In the beginning of the 20th century, geologist Thomas A. Jaggar, Jr., argued that, to fully understand volcanic and associated hazards, the expeditionary mode of studying eruptions only after they occurred was inadequate. Instead, he fervently advocated the use of permanent observatories to record and measure volcanic phenomena—at and below...
One hundred volatile years of volcanic gas studies at the Hawaiian Volcano Observatory
A.J. Sutton, Tamar Elias
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-7
The first volcanic gas studies in Hawai‘i, beginning in 1912, established that volatile emissions from Kīlauea Volcano contained mostly water vapor, in addition to carbon dioxide and sulfur dioxide. This straightforward discovery overturned a popular volatile theory of the day and, in the same action, helped affirm Thomas A. Jaggar,...
Accounting for tagging-to-harvest mortality in a Brownie tag-recovery model by incorporating radio-telemetry data
Frances E. Buderman, Duane R. Diefenbach, Mary Jo Casalena, Christopher S. Rosenberry, Bret D. Wallingford
2014, Ecology and Evolution (4) 1439-1450
The Brownie tag-recovery model is useful for estimating harvest rates but assumes all tagged individuals survive to the first hunting season; otherwise, mortality between time of tagging and the hunting season will cause the Brownie estimator to be negatively biased. Alternatively, fitting animals with radio transmitters can be used to...
Characterizing lentic freshwater fish assemblages using multiple sampling methods
Jesse R. Fischer, Michael C. Quist
2014, Environmental Monitoring and Assessment (186) 4461-4474
Characterizing fish assemblages in lentic ecosystems is difficult, and multiple sampling methods are almost always necessary to gain reliable estimates of indices such as species richness. However, most research focused on lentic fish sampling methodology has targeted recreationally important species, and little to no information is available regarding the influence...
Using urban forest assessment tools to model bird habitat potential
Susannah B. Lerman, Keith H. Nislow, David J. Nowak, Stephen DeStefano, David I. King, D. Todd Jones-Farrand
2014, Landscape and Urban Planning (122) 29-40
The alteration of forest cover and the replacement of native vegetation with buildings, roads, exotic vegetation, and other urban features pose one of the greatest threats to global biodiversity. As more land becomes slated for urban development, identifying effective urban forest wildlife management tools becomes paramount to ensure the urban...
Developing a topographic model to predict the northern hardwood forest type within Carolina northern flying squirrel (Glaucomys sabrinus coloratus) recovery areas of the southern Appalachians
Andrew Evans, Richard H. Odom, Lynn M. Resler, W. Mark Ford, Stephen Prisley
2014, International Journal of Forestry Research (2014)
The northern hardwood forest type is an important habitat component for the endangered Carolina northern flying squirrel (CNFS; Glaucomys sabrinus coloratus) for den sites and corridor habitats between boreo-montane conifer patches foraging areas. Our study related terrain data to presence of northern hardwood forest type in the recovery areas of...
Productivity and carbon dioxide exchange of leguminous crops: estimates from flux tower measurements
Tagir G. Gilmanov, John M. Baker, Carl J. Bernacchi, David P. Billesbach, George G. Burba, Saulo Castro, Jiquan Chen, Werner Eugster, Marc L. Fischer, John A. Gamon, Maheteme T. Gebremedhin, Aaron J. Glenn, Timothy J. Griffis, Jerry L. Hatfield, Mark W. Heuer, Daniel M. Howard, Monique Y. Leclerc, Henry W. Loescher, Oliver Marloie, Tilden P. Meyers, Albert Olioso, Rebecca L. Phillips, John H. Prueger, R. Howard Skinner, Andrew E. Suyker, Mario Tenuta, Bruce K. Wylie
2014, Agronomy Journal (106) 545-559
Net CO2 exchange data of legume crops at 17 flux tower sites in North America and three sites in Europe representing 29 site-years of measurements were partitioned into gross photosynthesis and ecosystem respiration by using the nonrectangular hyperbolic light-response function method. The analyses produced net CO2 exchange data and new ecosystem-scale ecophysiological...
A century of studying effusive eruptions in Hawaii
Katherine V. Cashman, Margaret T. Mangan
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-9
The Hawaiian Volcano Observatory (HVO) was established as a natural laboratory to study volcanic processes. Since the most frequent form of volcanic activity in Hawai‘i is effusive, a major contribution of the past century of research at HVO has been to describe and quantify lava flow emplacement processes. Lava flow...
The 2010 slow slip event and secular motion at Kilauea, Hawai`i inferred from TerraSAR-X InSAR data
Jingyi Chen, Howard A. Zebker, Paul Segall, Asta Miklius
2014, Journal of Geophysical Research B: Solid Earth (119) 6667-6683
We present here an Small BAseline Subset (SBAS) algorithm to extract both transient and secular ground deformations on the order of millimeters in the presence of tropospheric noise on the order of centimeters, when the transient is of short duration and known time, and the background deformation is smooth in...
Key recovery factors for the August 24, 2014, South Napa Earthquake
Kenneth W. Hudnut, Thomas M. Brocher, Carol S. Prentice, John Boatwright, Benjamin A. Brooks, Brad T. Aagaard, J. Luke Blair, Jon Peter B. Fletcher, Jemile Erdem, Charles W. Wicks Jr., Jessica R. Murray, Fred F. Pollitz, John O. Langbein, Jerry L. Svarc, David P. Schwartz, Daniel J. Ponti, Suzanne Hecker, Stephen B. DeLong, Carla M. Rosa, Brenda Jones, Rynn M. Lamb, Anne M. Rosinski, Timothy P. McCrink, Timothy E. Dawson, Gordon G. Seitz, Craig Glennie, Darren Hauser, Todd Ericksen, Dan Mardock, Don F. Hoirup, Jonathan D. Bray, Ron S. Rubin
2014, Open-File Report 2014-1249
Through discussions between the Federal Emergency Management Agency (FEMA) and the U.S. Geological Survey (USGS) following the South Napa earthquake, it was determined that several key decision points would be faced by FEMA for which additional information should be sought and provided by USGS and its partners. This report addresses...
Trouble in the aquatic world: How wildlife professionals are battling amphibian declines
Deanna H. Olson, Tara E. Chestnut
2014, The Wildlife Professional (8) 28-31
A parasitic fungus, similar to the one that caused the extinction of numerous tropical frog and toad species, is killing salamanders in Europe. Scientists first identified the fungus, Batrachochytrium salamandrivorans, in 2013 as the culprit behind the death of fire salamanders (Salamandra salamandra) in the Netherlands (Martel et al....
The evolution of seismic monitoring systems at the Hawaiian Volcano Observatory
Paul G. Okubo, Jennifer S. Nakata, Robert Y. Koyanagi
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801-2
In the century since the Hawaiian Volcano Observatory (HVO) put its first seismographs into operation at the edge of Kīlauea Volcano’s summit caldera, seismic monitoring at HVO (now administered by the U.S. Geological Survey [USGS]) has evolved considerably. The HVO seismic network extends across the entire Island of Hawai‘i and...
Implications of Web Mercator and its Use in Online Mapping
Sarah E. Battersby, Michael P. Finn, E. Lynn Usery, Kristina H. Yamamoto
2014, Cartographica: The International Journal for Geographic Information and Geovisualization (49) 85-101
Online interactive maps have become a popular means of communicating with spatial data. In most online mapping systems, Web Mercator has become the dominant projection. While the Mercator projection has a long history of discussion about its inappropriateness for general-purpose mapping, particularly at the global scale, and seems to have...
Does age matter? The influence of age on response rates in a mixed-mode survey
Larry M. Gigliotti, Alia Dietsch
2014, Human Dimensions of Wildlife: An International Journal (19) 280-287
The appeal of cost savings and faster results has fish and wildlife management agencies considering the use of Internet surveys instead of traditional mail surveys to collect information from their constituents. Internet surveys, however, may suffer from differential age-related response rates, potentially producing biased results if certain age groups respond...
Geomorphic evidence for enhanced Pliocene-Quaternary faulting in the northwestern Basin and Range
Magdalena A Ellis, Barnes Jason B, Joseph P. Colgan
2014, Lithosphere (7) 59-72
Mountains in the U.S. Basin and Range Province are similar in form, yet they have different histories of deformation and uplift. Unfortunately, chronicling fault slip with techniques like thermochronology and geodetics can still leave sizable, yet potentially important gaps at Pliocene–Quaternary (∼105–106 yr) time scales. Here, we combine existing geochronology...
Mercury and methylmercury stream concentrations in a Coastal Plain watershed: A multi-scale simulation analysis
Christopher D. Knightes, Heather E. Golden, Celeste A. Journey, Gary M. Davis, Paul Conrads, Mark Marvin-DiPasquale, Mark E. Brigham, Paul M. Bradley
2014, Environmental Pollution (187) 182-192
Mercury is a ubiquitous global environmental toxicant responsible for most US fish advisories. Processes governing mercury concentrations in rivers and streams are not well understood, particularly at multiple spatial scales. We investigate how insights gained from reach-scale mercury data and model simulations can be applied at broader watershed scales using...
Tectonic evolution of the Tualatin basin, northwest Oregon, as revealed by inversion of gravity data
Darcy McPhee, Victoria E. Langenheim, Ray E. Wells, Richard J. Blakely
2014, Geosphere (10) 264-275
The Tualatin basin, west of Portland (Oregon, USA), coincides with a 110 mGal gravity low along the Puget-Willamette lowland. New gravity measurements (n = 3000) reveal a three-dimensional (3-D) subsurface geometry suggesting early development as a fault-bounded pull-apart basin. A strong northwest-trending gravity gradient coincides with the Gales Creek fault,...
US Topo Maps 2014: Program updates and research
Kristin A. Fishburn
2014, Conference Paper
The U. S. Geological Survey (USGS) US Topo map program is now in year two of its second three-year update cycle. Since the program was launched in 2009, the product and the production system tools and processes have undergone enhancements that have made the US Topo maps a popular success...
Factors affecting fat content in mottled ducks on the Upper Texas Gulf Coast
Brian Kearns, David A. Haukos, Patrick Walther, Warren C. Conway
2014, Journal of the Southeastern Association of Fish and Wildlife Agencies (2015) 274-280
Body condition, or an individual's ability to address metabolic needs, is an important measure of organism health. For waterfowl, body condition, usually some measure of fat, provides a useful proxy for assessing energy budgets during different life history periods and potentially is a measure of response to ecosystem changes. The...
Foraging and growth potential of juvenile Chinook Salmon after tidal restoration of a large river delta
Aaron T. David, Christopher Ellings, Isa Woo, Charles A. Simenstad, John Y. Takekawa, Kelley L. Turner, Ashley L. Smith, Jean E. Takekawa
2014, Transactions of the American Fisheries Society (143) 1515-1529
We evaluated whether restoring tidal flow to previously diked estuarine wetlands also restores foraging and growth opportunities for juvenile Chinook Salmon Oncorhynchus tshawytscha. Several studies have assessed the value of restored tidal wetlands for juvenile Pacific salmon Oncorhynchus spp., but few have used integrative measures of salmon performance, such as habitat-specific growth potential,...
Best practices for continuous monitoring of temperature and flow in wadeable streams
Jen Stamp, Anna I. Hamilton, Michelle Craddock, Laila Parker, Allison H. Roy, Daniel J. Isaak, Zachary Holden, Margaret Passmore, Britta Bierwagen
2014, Report
The United States Environmental Protection Agency (U.S. EPA) is working with its regional offices, states, tribes, river basin commissions and other entities to establish Regional Monitoring Networks (RMNs) for freshwater wadeable streams. To the extent possible, uninterrupted, biological, temperature and hydrologic data will be collected on an ongoing basis at...
Development of a globally applicable model for near real-time prediction of seismically induced landslides
M. Anna Nowicki, David J. Wald, Michael W. Hamburger, Mike Hearne, Eric M. Thompson
2014, Engineering Geology (173) 54-65
Substantial effort has been invested to understand where seismically induced landslides may occur in the future, as they are a costly and frequently fatal threat in mountainous regions. The goal of this work is to develop a statistical model for estimating the spatial distribution of landslides in near real-time around...
Quantifying understorey vegetation in the US Lake States: a proposed framework to inform regional forest carbon stocks
Matthew B. Russell, Anthony W. D’Amato, Bethany K. Schulz, Christopher W. Woodall, Grant M. Domke, John B. Bradford
2014, Forestry (87) 629-638
The contribution of understorey vegetation (UVEG) to forest ecosystem biomass and carbon (C) across diverse forest types has, to date, eluded quantification at regional and national scales. Efforts to quantify UVEG C have been limited to field-intensive studies or broad-scale modelling approaches lacking field measurements. Although large-scale inventories of UVEG...
A multi-indicator framework for mapping cultural ecosystem services: The case of freshwater recreational fishing
Amy M. Villamagna, Beatriz Mogollon, Paul L. Angermeier
2014, Ecological Indicators (45) 255-265
Despite recent interest, ecosystem services are not yet fully incorporated into private and public decisions about natural resource management. Cultural ecosystem services (CES) are among the most challenging of services to include because they comprise complex ecological and social properties and processes that make them difficult to measure, map or...
