The major coral reefs of Maui Nui, Hawai‘i—distribution, physical characteristics, oceanographic controls, and environmental threats
Michael E. Field, Curt D. Storlazzi, Ann E. Gibbs, Nicole L. D'Antonio, Susan A. Cochran
2019, Open-File Report 2019-1019
Coral reefs are widely recognized as critical to Hawaiʻi’s economy, food resources, and protection from damaging storm waves. Yet overfishing, land-based pollution, and climate change are threatening the health and sustainability of those reefs, and accordingly, both the Federal and State governments have called for protection and effective management. In...
Satellite observations of surface deformation at the Coso Geothermal Field, California
Mariana Eneva, Andrew Barbour, David Adams, Vicky Hsiao, Kelly Blake, Giacomo Falorni, Roberto Locatelli
2019, Conference Paper, GRC Transactions
Surface deformation time series and rates are identified at the Coso Geothermal Field (CGF) and surrounding areas by applying interferometric synthetic aperture radar (InSAR) to satellite scenes from Envisat (June 2004 ̶ October 2010) and Sentinel (November 2014 – April 2018). The measurements are done in the line...
Integrating behavior and physiology into strategies for amphibian conservation
Susan Walls, Caitlin R Gabor
2019, Frontiers in Ecology and Evolution (7)
The amphibian decline crisis has been challenging to address because of the complexity of factors—and their multitude of interactive effects—that drive this global issue. Dissecting such complexity could benefit from strategies that integrate multiple disciplines and address the mechanistic underpinnings of population declines and extirpations. We examine how the disciplines...
Seasonal precipitation influences streamflow vulnerability to the 2015 drought in the western United States
Christopher Konrad
2019, Journal of Hydrometeorology (20) 1261-1274
Streamflow was exceptionally low in the spring and summer of 2015 across much of the western United States because of a regional drought that exploited the sensitivity of both snow- and rain-dominant rivers. Streamflow during 2015 was examined at 324 gauges in the region to assess its response to the...
Landscape change associated with the upper Scenic Drive landslide, La Honda, California, January 10–June 28, 2017
Alexandra J. Pickering, Carol S. Prentice, Stephen B. DeLong
2019, Open-File Report 2019-1024
La Honda, California, is a small town in unincorporated San Mateo County, located on the west edge of the San Francisco Peninsula in the Santa Cruz Mountains, between San Francisco and San Jose. The Scenic Drive area of La Honda has experienced several past episodes of landslide motion, which were...
Carbon dioxide emissions and methane flux from forested wetland soils of the Great Dismal Swamp, USA
Laurel Gutenberg, K. W. Krauss, John Qu, Changwoo Ahn, Dianna M. Hogan, Zhiliang Zhu, Chenyang Xu
2019, Environmental Management (64) 190-200
The Great Dismal Swamp, a freshwater forested peatland, has accumulated massive amounts of soil carbon since the postglacial period. Logging and draining have severely altered the hydrology and forest composition, leading to drier soils, accelerated oxidation, and vulnerability to disturbance. The once dominant Atlantic white cedar, cypress, and pocosin forest...
Recognizing the Famine Early Warning Systems Network: Over 30 years of drought early warning science advances and partnerships promoting global food security
Chris Funk, Shraddhanand Shukla, Wassila Mamadou Thiaw, James Rowland, Andrew Hoell, Gregory Husak, Nicholas Novella
2019, Bulletin of the American Meteorological Society 1011-1027
On a planet with more than 7 billion people, how do we identify the millions of drought-afflicted people who face a real threat of livelihood disruption or death without humanitarian assistance? Typically, these people are poor and heavily dependent on rainfed agriculture and livestock. Most live in Africa, Central America,...
Shorebird subsistence harvest and indigenous knowledge in Alaska: Informing harvest assessment and management, and engaging users in shorebird conservation
Naves. Liliana, Jacqueline Keating, T. Lee Tibbitts, Daniel R. Ruthrauff
2019, The Condor (121)
Limited data on harvest and population parameters are major impediments to assess shorebird harvest sustainability. Because of sharp declines in shorebird populations, timely conservation efforts require approaches that account for uncertainty in harvest sustainability. We combined harvest assessment and ethnographic research to better understand shorebird conservation concerns related to subsistence...
Enhanced landslide mobility by basal liquefaction: the 2014 SR530 (Oso), Washington landslide
Brian D. Collins, Mark E. Reid
2019, Geological Society of America Bulletin (132) 451-476
Landslide mobility can vastly amplify the consequences of slope failure. As a compelling example, the March 22, 2014 landslide near Oso, Washington (USA) was particularly devastating, traveling across a 1-km+ wide river valley, killing 43 people, destroying dozens of homes, and temporarily closing a well-traveled highway. To resolve causes...
Aquifer storage change and storage properties, 2010–2017, in the Big Chino Subbasin, Yavapai County, Arizona
Jeffrey R. Kennedy, Libby M. Wildermuth, Amy L. Read
2019, Scientific Investigations Report 2019-5060
The Big Chino Subbasin is a groundwater basin that includes the Verde River headwaters in Yavapai County in north-central Arizona. Groundwater in the southern part of the subbasin is found primarily in the Big Chino and Williamson Valleys. The former is a potential municipal water source for growing communities in...
Improved detection of rare, endangered and invasive trout using a new large-volume sampling method for eDNA capture
Adam J. Sepulveda, Jenna Schabacker, Seth Smith, Robert Al-Chokhachy, Gordon Luikart, Stephen J. Amish
2019, Environmental DNA (1) 227-237
Environmental DNA (eDNA) detection probability increases with volume of water sampled. Common approaches for collecting eDNA samples often require many samples since these approaches usually use fine filters, which restrict the volume of water that can be sampled. An alternative to collecting many, small volume water samples using fine filters...
Supply chain infrastructure restoration calculator software tool—Developer guide and user manual
Akhilesh Ojha, Bhanu Kanwar, Suzanna K. Long, Thomas G. Shoberg, Steven Corns
2019, Open-File Report 2019-1061
This report describes a software tool that calculates costs associated with the reconstruction of supply chain interdependent critical infrastructure in the advent of a catastrophic failure by either outside forces (extreme events) or internal forces (fatigue). This tool fills a gap between search and recover strategies of the Federal Emergency...
Variability in synthetic earthquake ground motions caused by source variability and errors in wave propagation models
Paul A. Spudich, Antonella Cirella, Laura Scognamiglio, Elisa Tinti
2019, Geophysical Journal International (219) 346-372
Numerical simulations of earthquake ground motions are used both to anticipate the effects of hypothetical earthquakes by forward simulation and to infer the behaviour of the real earthquake source ruptures by the inversion of recorded ground motions. In either application it is necessary to assume some Earth structure that...
ModelMuse Version 4: A graphical user interface for MODFLOW 6
Richard B. Winston
2019, Scientific Investigations Report 2019-5036
ModelMuse, a graphical user interface for groundwater-modeling software, was modified to support MODFLOW 6. ModelMuse works with two types of spatial discretization in MODFLOW 6: structured grids (DIS) and discretization by vertices (DISV). Quadtree refinement is used to generate a DISV model from a structured-grid model. The locations and weights...
Densities, diets, and growth rates of larval Alewife and Bloater in a changing Lake Michigan ecosystem.
Drew E Eppehimer, David Bunnell, Patricia Dieter, David Warner, Lauren A. Eaton, David J Wells, Edward S. Rutherford
2019, Transactions of the American Fisheries Society (148) 755-770
Variability in abiotic and biotic factors during larval stages has profound impacts on fish recruitment. In Lake Michigan, where the composition of lower trophic levels has undergone considerable changes in the past decade, managers are concerned that fish recruitment could be negatively affected. We hypothesized that spatial variation in Lake...
The evolving threat of rapid Ohia death (ROD) to Hawaii’s native ecosystems and rare plant species
Lucas B. Fortini, Lauren R. Kaiser, Lisa Keith, Jonathan Price, R. Flint Hughes, James D. Jacobi, J. B. Friday
2019, Forest Ecology and Management (448) 376-385
Hawai‘i’s most widespread native tree, ‘ōhi‘a lehua (Metrosideros polymorpha), has been dying across large areas of Hawai‘i Island mainly due to two fungal pathogens (Ceratocystis lukuohia and Ceratocystis huliohia) that cause a disease collectively known as Rapid ‘Ōhi‘a Death (ROD). Here we examine patterns of positive detections of C. lukuohia as it has been...
Seasonal and spatial variation in the location and reactivity of a nitrate-contaminated groundwater discharge zone in a lakebed
Richard L. Smith, Deborah A. Repert, Deborah Stoliker, Douglas B. Kent, Bongkeun Song, Denis R. LeBlanc, Timothy D. McCobb, J.K. Bohlke, Sung Pil Hyun, Hee Sun Moon
2019, Journal of Geophysical Research: Biogeosciences (124) 2186-2207
Groundwater discharge delivering anthropogenic N from surrounding watersheds can impact lake nutrient budgets. However, upgradient groundwater processes and changing dynamics in N biogeochemistry at the groundwater-lake interface are complex and difficult to resolve. In this study, hydrograph variations in a groundwater flow-through lake altered discharge patterns of...
Review: Endophytic microbes and their potential applications in crop management
James F. White, Kathryn L. Kingsley, Matthew T. Elmore, Satish Kumar Verma, Surendra K Gond, Kurt P. Kowalski
2019, Pest Management Science (75) 2558-2565
Endophytes are microbes (mostly bacteria and fungi) present in plants. Endophytic microbes are often functional in that they may carry nutrients from the soil into plants, modulate plant development, increase stress tolerance of plants, suppress virulence in pathogens, increase disease resistance in plants, and suppress development of competitor plant species....
Subsurface water piping prevents meromixis in a deep volcanic crater lake (Dominica, West Indies)
Bryan M. Maitland, Brian O’Malley, Donald J. Stewart
2019, Hydrobiologia (839) 119-130
Boeri Lake—a small (3.6 ha) but deep (39.6 m) crater lake on Morne Micotrin in Dominica, West Indies—presents a limnological enigma; it exhibits strong morphometric and circumstantial evidence for meromixis, yet it is not stratified. We tested the hypothesis that water seepage from Boeri Lake overcomes morphometric drivers of stratification...
Authigenic mineral texture in submarine 1979 basalt drill core, Surtsey volcano, Iceland
M.D. Jackson, S. Couper, S.V. Stan, M. Ivarsson, M.W. Czabaj, N. Tamura, D. Parkinson, L.M. Miyagi, James G. Moore
2019, Geochemistry, Geophysics, Geosystems (20) 3751-3773
Micrometer-scale maps of authigenic microstructures in submarine basaltic tuff specimens from a 1979 Surtsey volcano, Iceland, drill core acquired 15 years after eruptions terminated provide fresh perspectives for deciphering the initial alteration of oceanic basalt in a low temperature hydrothermal system. A novel investigative approach integrates synchrotron source X-ray microdiffraction...
Assessment of undiscovered oil and gas resources of the Sirte and Pelagian Basin Provinces of Libya, Tunisia, Malta, and Italy, 2019
Christopher J. Schenk, Tracey J. Mercier, Marilyn E. Tennyson, Phuong A. Le, Janet K. Pitman, Ronald M. Drake II, Michael E. Brownfield, Thomas M. Finn
2019, Fact Sheet 2019-3030
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 16.4 billion barrels of oil and 106.3 trillion cubic feet of gas in the Sirte and Pelagian Basin Provinces of Libya, Tunisia, Malta, and Italy....
Limpkin, Aramus guarauna (L., 1766) (Gruiformes, Aramidae), extralimital breeding in Louisiana is associated with availability of the invasive Giant Apple Snail, Pomacea maculata Perry, 1810 (Caenogastropoda, Ampullariidae)
Robert C. Dobbs, Jacoby Carter, Jessica L. Schulz
2019, Check List (15) 497-507
We document the first breeding record of Limpkin, Aramus guarauna (Linnaeus, 1766) (Gruiformes, Aramidae), for Louisiana, describe an additional unpublished breeding record from Georgia, as well as a possible record from Alabama, and associate these patterns with the concurrent establishment of the invasive Giant Apple Snail, Pomacea maculata Perry, 1810 (Caenogastropoda,...
Typha (cattail) invasion in North American wetlands: Biology, regional problems, impacts, ecosystem services, and management
Sheel Bansal, Shane Lishawa, Sue Newman, Brian Tangen, Douglas Wilcox, Dennis Albert, Michael J. Anteau, Michael J Chimney, Ryann L. Cressey, Edward S. DeKeyser, Kenneth J Elgersam, Sarah A Finkelstein, Joanna Freeland, Richard Grosshans, Page E. Klug, Daniel J Larkin, Beth A. Lawrence, George Linz, Joy Marburger, Gregory E. Noe, Clint Otto, Nicholas Reo, Jennifer Richards, Curtis J. Richardson, LeRoy Rodgers, Amy J Shrank, Dan Svedarsky, Steven E. Travis, Nancy Tuchman, Arnold van der Valk, Lisamarie Windham-Myers
2019, Wetlands 1-40
Typha is an iconic wetland plant found worldwide. Hybridization and anthropogenic disturbances have resulted in large increases in Typha abundance in wetland ecosystems throughout North America at a cost to native floral and faunal biodiversity. As demonstrated by three regional case studies, Typha is capable of rapidly colonizing habitats and...
Estimating density and detection of bobcats in fragmented Midwestern landscapes using spatial capture-recapture data from camera traps
Christopher N. Jacques, Robert W. Klaver, Tim C. Swearingen, Edward D. Davis, Charles R. Anderson, Jonathan A. Jenks, Christopher S. DePerno, Robert D. Bluett
2019, Wildlife Society Bulletin (43) 256-264
Camera-trapping data analyzed with spatially explicit capture–recapture (SCR) models can provide a rigorous method for estimating density of small populations of elusive carnivore species. We sought to develop and evaluate the efficacy of SCR models for estimating density of a presumed low-density bobcat (Lynx rufus) population in fragmented landscapes of...
Toxicity of aluminum to Ceriodaphnia dubia in low-hardness waters as affected by natural dissolved organic matter
John M. Besser, Danielle M. Cleveland, Chris D. Ivey, Laura Blake
2019, Environmental Toxicology and Chemistry (38) 2121-2127
We conducted a series of 7‐d toxicity tests with Ceriodaphnia dubia in dilutions of low‐hardness natural waters, which contained dissolved organic carbon (DOC) concentrations up to 10 mg/L. Stream waters were mixed with well water to achieve 2 target hardness levels (20 and 35 mg/L) and 4 DOC concentrations. Tests with aluminum...
