Mapping the lava deltas of the 2018 eruption of Kīlauea Volcano
S. Adam Soule, Erin Heffron, Lindsay Gee, Larry Mayer, Nicole A. Raineault, Christopher R German, Darlene Lim, Michael H. Zoeller, Carolyn Parcheta
2019, Oceanography (32) 46-47
No abstract available....
Deep search: Deep sea exploration to advance research on coral/canyon/cold seep habitats
Erik E. Cordes, Amanda W.J. Demopoulos, Michael Rasser, Caitlin Adams
2019, Oceanography (32) 104-105
Led by the Bureau of Ocean Energy Management (BOEM), the United States Geological Survey (USGS), and OER is an interagency partnership to explore and characterize sensitive deepwater habitats of the U.S. mid- and south Atlantic deep-sea habitats. Sponsored by the National Oceanographic Partnership Program, the study has brought together scientists...
Dropstones in lacustrine sediments as a record of snow avalanches - A validation of the proxy by combining satellite imagery and varve chronology at Kenai Lake (south-central Alaska)
Sien Thys, Maarten Van Daele, Nore Praet, Britta J.L. Jensen, Thomas Van Dyck, Peter J. Haeussler, Elke Vandekerkhove, Veerle Cnudde, Marc De Batist
2019, Quaternary Geochronology (2)
Snow avalanches cause many fatalities every year and damage local economies worldwide. The present-day climate change affects the snowpack and, thus, the properties and frequency of snow avalanches. Reconstructing snow avalanche records can help us understand past variations in avalanche frequency and their relationship to climate change. Previous avalanche records...
Strontium residual salt analyses (SrRSA) and geochemistry of Bakken Formation core samples from Fleckten 1-20, North Dakota
Zell E. Peterman, Kiyoto Futa, Thomas Oliver
2019, Mountain Geologist (56) 5-17
Samples of Bakken Formation core from the Fleckton 1-20 well in Ward County, North Dakota, were analyzed using the Strontium Residual Salt Analysis (SrRSA) method to assess pore-water communication among the upper, middle, and lower sections of the unit by analyzing 87Sr/86Sr in pore-water salts leached from the core. Major and...
Complexities, context, and new information about the Elwha River
Jeff Duda, Joseph H Anderson, Matt M. Beirne, S.J. Brenkman, Patrick Crain, John Mahan, Michael McHenry, George Pess, Roger Peters, Brian Winter
2019, Frontiers in Ecology and the Environment (17) 10-11
Recently, Hand et al. (2018) discussed the socio- ecological complexities surround-ing natural resource policy, science, and management in the Columbia River Basin, using a case study of dam removal on the Elwha River in Washington State (WebFigure 1a). We feel compelled to provide additional historical context and correct some of...
Surface imaging functions for elastic reverse time migration
Frederick Pollitz
2019, Journal of Geophysical Research Solid Earth (124) 2873-2895
Reverse time migration is often used to interpret acoustic or three‐component seismic recordings by creating an image of subsurface seismic reflectors. Here I describe elastic reverse time migration imaging functions that are cast as waveform misfit sensitivity kernels of contrasts in material parameters across hypothetical seismic discontinuities, that is, specular...
Lithologies, ages, and provenance of clasts in the Ordovician Fincastle Conglomerate, Botetourt County, Virginia, USA
Harvey E. Belkin, John E. Repetski, Frank T. Dulong, Nelson L. Hickling
2019, Stratigraphy (15) 1-20
The Fincastle Conglomerate is an Ordovician polymictic, poorly sorted, matrix- and clast-supported cobble to boulder-rich conglomerate located just north of Fincastle, Botetourt County, VA. At least nine other cobble and boulder conglomerates are located in a similar stratigraphic position from Virginia to Georgia west of the Blue Ridge structural front....
Effectiveness of lake trout (Salvelinus namaycush) suppression in Lake Pend Oreille, Idaho: 2006–2016
Andrew M. Dux, Michael J. Hansen, Matthew P. Corsi, Nicholas C. Wahl, James P. Fredericks, Charles E. Corsi, Daniel J. Schill, Ned J. Horner
2019, Hydrobiologia (840) 319-333
The nonnative lake trout (Salvelinus namaycush Walbaum, 1792) population in Lake Pend Oreille, Idaho increased exponentially during 1999–2006. This led to an unsustainable level of predation mortality on kokanee (Oncorhynchus nerka Walbaum, 1792), increased the conservation threat to native bull trout (Salvelinus confluentus Suckley, 1859), and jeopardized...
The black brant population is declining based on mark recapture
James S. Sedinger, Thomas V. Riecke, Alan G. Leach, David H. Ward
2019, Journal of Wildlife Management (83) 627-637
Annual survival and recruitment in black brant (Branta bernicla nigricans) have declined since the 1990s, yet aerial surveys of the global population have been stable or even increasing over the past decade. We used a combination of a Lincoln estimator based on harvest information and band recoveries, and marked‐unmarked ratios...
Flexible timing of annual movements across consistently used sites by Marbled Godwits breeding in Alaska
Daniel R. Ruthrauff, T. Lee Tibbitts, Robert E. Gill Jr.
2019, The Auk (136) 1-11
The study of avian movement has detailed a spectrum of strategies for the timing and use of sites throughout the annual cycle, from near randomness to complete consistency. New tracking devices now permit the repeated tracking of individual animals throughout the annual cycle, detailing previously unappreciated levels of variation within...
U.S. Geological research at Grand Canyon National Park: A century of collaboration
Helen C. Fairley
2019, Book chapter, Celebrating 100 years of Grand Canyon National Park—A gathering of Grand Canyon historians—Ideas, arguments and first person accounts
(Fairley) When historians describe the decades preceding designation of Grand Canyon National Park (GCNP), they typically focus attention on early scientific studies conducted by John Wesley Powell, Clarence Dutton, and Charles Walcott. All three of these pioneering scientists were employed by the U.S. Geological Survey (USGS), a small Federal...
A multidisciplinary framework to derive global river reach classifications at high spatial resolution
Camille Ouellet Dallaire, Bernhard Lehner, Roger Sayre, Michele Thieme
2019, Environmental Research Letters (14) 1-12
Projected climate and environmental change are expected to increase the pressure on global freshwater resources. To prepare for and cope with the related risks, stakeholders need to devise plans for sustainable management of river systems, which in turn requires the identification of management-appropriate operational units, such as groups of rivers...
A new 30 meter resolution global shoreline vector and associated global islands database for the development of standardized ecological coastal units
Roger Sayre, Suzanne Noble, Sharon L. Hamann, Rebecca A. Smith, Dawn J. Wright, Sean P. Breyer, Kevin Butler, Keith Van Graafeiland, Charlie Frye, Deniz Karagulle, Dabney Hopkins, Drew Stephens, Kevin Kelly, Zeenatul Basher, Devon Burton, Jill Janene Cress, Karina Atkins, D. Paco Van Sistine, Beverly Friesen, Rebecca Allee, Tom Allen, Peter Aniello, Irawan Asaad, Mark John Costello, Kathy Goodin, Peter Harrison, Maria T. Kavanaugh, Helen Lillis, Eleonora Manca, Frank E. Muller-Karger, Bjorn Nyberg, Rost Parsons, Justin Saarinen, Jac Steiner, Adam Reed
2019, Journal of Operational Oceanography (12) s47-s56
A new 30-m spatial resolution global shoreline vector (GSV) was developed from annual composites of 2014 Landsat satellite imagery. The semi-automated classification of the imagery was accomplished by manual selection of training points representing water and non-water classes along the entire global coastline. Polygon topology was applied to the GSV,...
Adapting a regional water-quality model for local application: A case study for Tennessee, USA
Anne B. Hoos, Sherry H. Wang, Gregory E. Schwarz
2019, Environmental Modelling and Software (115) 187-199
We evaluated whether SPAtially Referenced Regression On Watershed attributes (SPARROW) models calibrated for two adjacent USA regions could be applied at the local scale to support management decisions for streams in Tennessee. Nutrient-source apportionment of load is important for this local-scale application and demands careful consideration of uncertainty in the calibrated coefficients. We used...
Geochemically distinct oil families in the onshore and offshore Santa Maria basins, California
Kenneth E. Peters, Paul G. Lillis, Thomas Lorenson, J. E. Zumberge
2019, AAPG Bulletin (103) 243-271
The purpose of this work is to identify genetic affinities among 48 crude oil samples from the onshore and offshore Santa Maria basins. A total of 21 source-related biomarker and stable carbon isotope ratios among the samples were assessed to assure that they were unaffected by secondary processes. Chemometric analysis...
Adaptive variation, including local adaptation, requires decades to become evident in common gardens
Matthew J. Germino, Ann M. Moer, Alan R. Sands
2019, Ecological Applications (29) 1-7
Population‐level adaptation to spatial variation in factors such as climate and soils is critical for climate‐vulnerability assessments, restoration seeding, and other ecological applications in species management, and the underlying information is typically based on common‐garden studies that are short duration. Here, we show >20 yr were required for adaptive differences to...
On the shoulders of giants: Continuing the legacy of large-scale ecosystem manipulation experiments in Puerto Rico
Tana E. Wood, Grizelle Gonzalez, Whendee L. Silver, Sasha C. Reed, Molly A. Cavaleri
2019, Forests (10) 1-18
There is a long history of experimental research in the Luquillo Experimental Forest in Puerto Rico. These experiments have addressed questions about biotic thresholds, assessed why communities vary along natural gradients, and have explored forest responses to a range of both anthropogenic and non-anthropogenic disturbances. Combined, these studies cover many...
Lithospheric signature of late Cenozoic extension in electrical resistivity structure of the Rio Grande rift, New Mexico, USA
D. W. Feucht, Paul A. Bedrosian, Anne F Sheehan
2019, Journal of Geophysical Research B: Solid Earth (124) 2331-2351
We present electrical resistivity models of the crust and upper mantle from two‐dimensional (2‐D) inversion of magnetotelluric (MT) data collected in the Rio Grande rift, New Mexico, USA. Previous geophysical studies of the lithosphere beneath the rift identified a low‐velocity zone several hundred kilometers wide, suggesting that the upper mantle...
Seed bank community and soil texture relationships in a cold desert
Jeffrey D. Haight, Sasha C. Reed, Akasha M. Faist
2019, Journal of Arid Environments (164) 46-52
Sustainable dryland management depends on understanding environmental factors driving composition of current and future ecological communities. While there has been extensive research on aboveground plant communities, less is known about belowground soil seed bank communities, which can reflect both past and potential future communities. In the Colorado Plateau of the...
Bioprocessed soybean meal replacement of fish meal in rainbow trout (Oncorhynchus mykiss) diets
Jill M. Voorhees, Steven R. Chipps, Michael Barnes, Pedro Gonzalez-Redondo
2019, Cogent Food & Agriculture (5)
This 125-day experiment evaluated the growth of adult rainbow trout (Oncorhynchus mykiss) fed one of three isonitrogenous and isocaloric diets (46% protein, 16% lipid). Fish meal was the primary protein source for the reference diet, which was compared to two other diets where bioprocessed soybean meal replaced 60% or 80%...
Communication strategies for reducing lead poisoning in wildlife and human health risks
John H. Schulz, Sonja A. Wilhelm Stanis, Elisabeth B. Webb, Christine Jie Li, Damon M. Hall
2019, Wildlife Society Bulletin (43) 131-140
Although lead poisoning in North American waterfowl has been reduced, it persists among other wildlife. To address this issue, we review lead poisoning in wildlife and threats to human health, describe the recent socio-political landscape, and develop a framework for reducing lead exposure related to hunting ammunition and fishing tackle....
Constraining the early eruptive history of the Mono Craters rhyolites, California, based on 238U–230Th isochron dating of their explosive and effusive products
Mae Marcaida, Jorge A. Vazquez, Mark E. Stelten, Jonathan S. Miller
2019, Geochemistry, Geophysics, Geosystems (20) 1539-1556
The Mono Craters are an overlapping chain of at least 28 domes and coulees located south of Mono Lake, east central California, and represent the most recent eruptions of high‐silica rhyolite magma in the Mono Lake‐Long Valley volcanic region. Regionally widespread tephra fall deposits from the Mono Craters serve as...
Satellite-detected forest disturbance forecasts American marten population decline: The case for supportive space-based monitoring
John Clare, Shawn T. McKinney, Erin M. Simons-Legaard, John E. DePue, Cyndy Loftin
2019, Biological Conservation (233) 336-345
Limited monitoring resources often constrain rigorous monitoring practices to species or populations of conservation concern. Insufficient monitoring can induce a tautology as lack of monitoring resources makes it difficult to determine whether a species or population deserves additional monitoring resources. When in-situ monitoring resources are limited, remote habitat monitoring could...
Bridge scour countermeasure assessments at select bridges in the United States, 2016–18
Taylor J. Dudunake, Richard J. Huizinga, Ryan L. Fosness
2019, Open-File Report 2019-1008
In 2009, the Federal Highway Administration published Hydraulic Engineering Circular No. 23 (HEC-23) to provide specific design and implementation guidelines for bridge scour and stream instability countermeasures. However, the effectiveness of countermeasures implemented over the past decade following those guidelines has not been evaluated. Therefore, in 2013, the U.S....
Planetary geologic mapping—Program status and future needs
James A. Skinner Jr., Alexandra E. Huff, Corey M. Fortezzo, Tenielle Gaither, Trent M. Hare, Marc A. Hunter, Holly Buban
2019, Open-File Report 2019-1012
The United States Geological Survey’s (USGS) Planetary Geologic Map Coordination Group (Flagstaff, Ariz.) surveyed planetary geoscience map makers and users to determine the importance, relevance, and usability of such products to their planetary science research and to current and future needs of the planetary science community. This survey was...
