Evaluation of harvest and information needs for North American sea ducks
Mark D. Koneff, Guthrie S. Zimmerman, Chris P. Dwyer, Kathleen K. Fleming, Paul I. Padding, Patrick K. Devers, Fred A. Johnson, Michael C. Runge, Anthony J. Roberts
2017, PLoS ONE (12) 1-29
Wildlife managers routinely seek to establish sustainable limits of sport harvest or other regulated forms of take while confronted with considerable uncertainty. A growing body of ecological research focuses on methods to describe and account for uncertainty in management decision-making and to prioritize research and monitoring investments to reduce the...
Developing criteria to establish Trusted Digital Repositories
John Faundeen
2017, Data Science Journal (16) 1-13
This paper details the drivers, methods, and outcomes of the U.S. Geological Survey’s quest to establish criteria by which to judge its own digital preservation resources as Trusted Digital Repositories. Drivers included recent U.S. legislation focused on data and asset management conducted by federal agencies spending $100M USD or more...
A foundation for future assessment and management of groundwater resources
Kenneth D. Ehman, Brian D. Edwards
2017, Conference Paper
Sequence stratigraphic models for the Pleistocene to Holocene sediments of the Los Angeles (LA) Basin will provide better understanding of regional groundwater flow and have helped identify seawater intrusion pathways into important groundwater aquifers. Because groundwater provides more than one-third of the municipal water supply for the coastal LA Basin, the aquifer...
Mineralization dynamics of metakaolin-based alkali-activated cements
Juan Pablo Gevaudan, Kate M. Campbell, Tyler Kane, Richard K. Shoemaker, Wil V. Srubar III
2017, Cement and Concrete Research (94) 1-12
This paper investigates the early-age dynamics of mineral formation in metakaolin-based alkali-activated cements. The effects of silica availability and alkali content on mineral formation were investigated via X-ray diffraction and solid-state 29Si magic-angle spinning nuclear magnetic resonance spectroscopy at 2, 7, 14, and 28 days. Silica availability was controlled...
Carbonate buffering and metabolic controls on carbon dioxide in rivers
Edward G. Stets, David Butman, Cory P. McDonald, Sarah M. Stackpoole, Michael D. DeGrandpre, Robert G. Striegl
2017, Global Biogeochemical Cycles (31) 663-677
Multiple processes support the significant efflux of carbon dioxide (CO2) from rivers and streams. Attribution of CO2 oversaturation will lead to better quantification of the freshwater carbon cycle and provide insights into the net cycling of nutrients and pollutants. CO2 production is closely related to O2consumption because of the metabolic linkage of...
Variable effects of climate on forest growth in relation to climate extremes, disturbance, and forest dynamics
Malcolm S. Itter, Andrew O. Finley, Anthony W. D’Amato, Jane R. Foster, John B. Bradford
2017, Ecological Applications (27) 1082-1095
Changes in the frequency, duration, and severity of climate extremes are forecast to occur under global climate change. The impacts of climate extremes on forest productivity and health remain difficult to predict due to potential interactions with disturbance events and forest dynamics—changes in forest stand composition, density, size and age...
Migratory connectivity of american woodcock using band return data
Joseph D. Moore, David G. Krementz
2017, Journal of Wildlife Management (81) 1063-1072
American woodcock (Scolopax minor) are managed as a Central and an Eastern population in the United States and Canada based on band return data showing little crossover between populations or management regions. The observed proportion of crossover between management regions, however, depends on the criteria used to subset the band...
Fracture propagation and stability of ice shelves governed by ice shelf heterogeneity
Chris Borstad, Daniel Mcgrath, Allen Pope
2017, Geophysical Research Letters (44) 4186-4194
Tabular iceberg calving and ice shelf retreat occurs after full‐thickness fractures, known as rifts, propagate across an ice shelf. A quickly evolving rift signals a threat to the stability of Larsen C, the Antarctic Peninsula's largest ice shelf. Here we reveal the influence of ice shelf heterogeneity on the growth...
Long-term afterslip of the M6.0, 2004 Parkfield, California, earthquake—Implications for forecasting amount and duration of afterslip on other major creeping faults
James J. Lienkaemper, Forrest S. McFarland
2017, Bulletin of the Seismological Society of America (107) 1082-1093
We present the longest record of surface afterslip on a continental strike‐slip fault for the 2004 M 6.0 Parkfield, California, earthquake, from which we can derive critical information about the duration and predictability of afterslip relevant to urban displacement hazard applications. Surface slip associated with this event occurred entirely postseismically...
Shallow-depth location and geometry of the Piedmont Reverse splay of the Hayward Fault, Oakland, California
Rufus D. Catchings, Mark R. Goldman, David Trench, Michael Buga, Joanne H. Chan, Coyn J. Criley, Luther M. Strayer
2017, Open-File Report 2016-1123
The Piedmont Thrust Fault, herein referred to as the Piedmont Reverse Fault (PRF), is a splay of the Hayward Fault that trends through a highly populated area of the City of Oakland, California (fig. 1A). Although the PRF is unlikely to generate a large-magnitude earthquake, slip on the PRF or...
Identification of alginite and bituminite in rocks other than coal. 2006, 2009, and 2011 round robin exercises of the ICCP Identification of Dispersed Organic Matter Working Group
J. Kus, C.V. Araujo, A.G. Borrego, D. Flores, Paul C. Hackley, M. Hamor-Vido, Stavros Kalaitzidis, C.J. Kommeren, B. Kwiecinska, M. Mastalerz, J.G. Mendonca Filho, T.R. Menezes, M. Misz-Kennan, G.J. Nowak, H. Petersen, D. Rallakis, I. Suarez-Ruiz, I. Sykorova, D. Zivotić
2017, International Journal of Coal Geology (178) 26-38
The paper presents results of round robin exercises on photomicrograph-based identification of dispersed organic matter in source rocks that represent a range of marine and lacustrine deposits from worldwide localities and cover a range of thermal maturities. The round robin exercises were conducted by...
Capturing spatiotemporal variation in wildfires for improving postwildfire debris-flow hazard assessments
Jessica R. Haas, Matthew P. Thompson, Anne C. Tillery, Joe H. Scott
2017, Book chapter, Natural Hazard Uncertainty Assessment: Modeling and Decision Support
Wildfires can increase the frequency and magnitude of catastrophic debris flows. Integrated, proactive natural hazard assessment would therefore characterize landscapes based on the potential for the occurrence and interactions of wildfires and postwildfire debris flows. This chapter presents a new modeling effort that can quantify the variability surrounding a key...
A groundwater-flow model for the Treasure Valley and surrounding area, southwestern Idaho
James R. Bartolino, Sean Vincent
2017, Fact Sheet 2017-3027
The U.S. Geological Survey (USGS), in partnership with the Idaho Department of Water Resources (IDWR) and Idaho Water Resource Board (IWRB), will construct a numerical groundwater-flow model of the Treasure Valley and surrounding area. Resource managers will use the model to simulate potential anthropogenic and climatic effects on groundwater for...
Precipitation collector bias and its effects on temporal trends and spatial variability in National Atmospheric Deposition Program/National Trends Network data
Gregory A. Wetherbee
2017, Environmental Pollution (223) 90-101
Precipitation samples have been collected by the National Atmospheric Deposition Program's (NADP) National Trends Network (NTN) using the Aerochem Metrics Model 301 (ACM) collector since 1978. Approximately one-third of the NTN ACM collectors have been replaced with N-CON Systems, Inc. Model ADS 00-120 (NCON) collectors. Concurrent data were collected over...
A window of opportunity for climate-change adaptation: Easing tree mortality by reducing forest basal area
John B. Bradford, David M. Bell
2017, Frontiers in Ecology and the Environment (15) 11-17
Increasing aridity as a result of climate change is expected to exacerbate tree mortality. Reducing forest basal area – the cross-sectional area of tree stems within a given ground area – can decrease tree competition, which may reduce drought-induced tree mortality. However, neither the magnitude of expected mortality increases, nor...
Disturbance automated reference toolset (DART): Assessing patterns in ecological recovery from energy development on the Colorado Plateau
Travis W. Nauman, Michael C. Duniway, Miguel L. Villarreal, Travis B. Poitras
2017, Science of the Total Environment (584-585) 476-488
A new disturbance automated reference toolset (DART) was developed to monitor human land surface impacts using soil-type and ecological context. DART identifies reference areas with similar soils, topography, and geology; and compares the disturbance condition to the reference area condition using a quantile-based approach based on a satellite vegetation index....
The effect of urban growth on landscape-scale restoration for a fire-dependent songbird
Bradley A. Pickens, Jeffrey F. Marcus, John P. Carpenter, Scott Anderson, Paul J. Taillie, Jaime A. Collazo
2017, Journal of Environmental Management (191) 105-115
A landscape-scale perspective on restoration ecology has been advocated, but few studies have informed restoration with landscape metrics or addressed broad-scale threats. Threats such as urban growth may affect restoration effectiveness in a landscape context. Here, we studied longleaf pine savanna in the rapidly urbanizing southeastern United States where a...
Monitoring protocols: Options, approaches, implementation, benefits
Jason W. Karl, Jeffrey E. Herrick, David A. Pyke
2017, Book chapter, Monitoring protocol: Options, approaches, implementation, benefits
Monitoring and adaptive management are fundamental concepts to rangeland management across land management agencies and embodied as best management practices for private landowners. Historically, rangeland monitoring was limited to determining impacts or maximizing the potential of specific land uses—typically grazing. Over the past several decades, though, the uses of and...
Developing flood-inundation maps for Johnson Creek, Portland, Oregon
Adam J. Stonewall, Benjamin A. Beal
2017, Scientific Investigations Report 2017-5024
Digital flood-inundation maps were created for a 12.9‑mile reach of Johnson Creek by the U.S. Geological Survey (USGS). The flood-inundation maps depict estimates of water depth and areal extent of flooding from the mouth of Johnson Creek to just upstream of Southeast 174th Avenue in Portland, Oregon. Each flood-inundation...
Potential effects of existing and proposed groundwater withdrawals on water levels and natural groundwater discharge in Snake Valley and surrounding areas, Utah and Nevada
Melissa D. Masbruch, Lynette E. Brooks
2017, Open-File Report 2017-1026
Several U.S. Department of Interior (DOI) agencies are concerned about the cumulative effects of groundwater development on groundwater resources managed by, and other groundwater resources of interest to, these agencies in Snake Valley and surrounding areas. The new water uses that potentially concern the DOI agencies include 12 water-right applications...
Community disruptions and business costs for distant tsunami evacuations using maximum versus scenario-based zones
Nathan J. Wood, Rick I. Wilson, Jamie L. Ratliff, Jeff Peters, Ed MacMullan, Tessa Krebs, Kimberley Shoaf, Kevin Miller
2017, Natural Hazards (86) 619-643
Well-executed evacuations are key to minimizing loss of life from tsunamis, yet they also disrupt communities and business productivity in the process. Most coastal communities implement evacuations based on a previously delineated maximum-inundation zone that integrates zones from multiple tsunami sources. To support consistent evacuation planning that protects lives but...
The effects of drought and fire in the extirpation of an abundant semi-aquatic turtle from a lacustrine environment in the southwestern USA
Jeffrey E. Lovich, Mari Quillman, Brian Zitt, Adam Schroeder, David E. Green, Charles B. Yackulic, Paul Gibbons, Eric Goode
2017, Knowledge and Management of Aquatic Ecosystems (418) 1-11
We documented a significant mortality event affecting a southwestern pond turtle (Actinemys pallida) population living in a lake in southern California, USA. The area around the lake was impacted by a large wildland fire in 2013 that occurred during a protracted drought. As the mortality event was still unfolding, we...
Opinion: Why we need a centralized repository for isotopic data
Jonathan N. Pauli, Seth D. Newsome, Joseph A. Cook, Chris Harrod, Shawn A. Steffan, Christopher J. O. Baker, Merav Ben-David, David Bloom, Gabriel J. Bowen, Thure E. Cerling, Carla Cicero, Craig Cook, Michelle Dohm, Prarthana S. Dharampal, Gary Graves, Robert Gropp, Keith A. Hobson, Chris Jordan, Bruce MacFadden, Suzanne Pilaar Birch, Jorrit Poelen, Sujeevan Ratnasingham, Laura Russell, Craig A. Stricker, Mark D. Uhen, Christopher T. Yarnes, Brian Hayden
2017, Proceedings of the National Academy of Sciences of the United States of America (114) 2997-3001
Stable isotopes encode and integrate the origin of matter; thus, their analysis offers tremendous potential to address questions across diverse scientific disciplines (1, 2). Indeed, the broad applicability of stable isotopes, coupled with advancements in high-throughput analysis, have created a scientific field that is growing exponentially, and generating...
Spatial variability of CO2 concentrations and biogeochemistry in the Lower Columbia River
John T. Crawford, David Butman, Luke C. Loken, Philipp Stadler, Catherine Kuhn, Robert G. Striegl
2017, Inland Waters (7) 417-427
Carbon dioxide (CO2) emissions from rivers and other inland waters are thought to be a major component of regional and global carbon cycling. In large managed rivers such as the Columbia River, contemporary ecosystem changes such as damming, nutrient enrichment, and increased water residence times may lead to reduced CO2 concentrations...
Assessment of undiscovered oil and gas resources in the Haynesville Formation, U.S. Gulf Coast, 2016
Stanley T. Paxton, Janet K. Pitman, Scott A. Kinney, Nicholas J. Gianoutsos, Ofori N. Pearson, Katherine J. Whidden, Russell F. Dubiel, Christopher J. Schenk, Lauri A. Burke, Timothy R. Klett, Heidi M. Leathers-Miller, Tracey J. Mercier, Seth S. Haines, Brian A. Varela, Phuong A. Le, Thomas M. Finn, Stephanie B. Gaswirth, Sarah J. Hawkins, Kristen R. Marra, Marilyn E. Tennyson
2017, Fact Sheet 2017-3016
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 1.1 billion barrels of conventional oil and 195.8 trillion cubic feet of gas in the Upper Jurassic Haynesville Formation in onshore lands and State waters of the U.S. Gulf Coast region....
