High spatio-temporal resolution observations of crater-lake temperatures at Kawah Ijen volcano, East Java, Indonesia
Jennifer L. Lewicki, Corentin Caudron, Vincent van Hinsberg, George Hilley
2016, Bulletin of Volcanology (78)
The crater lake of Kawah Ijen volcano, East Java, Indonesia, has displayed large and rapid changes in temperature at point locations during periods of unrest, but measurement techniques employed to-date have not resolved how the lake’s thermal regime has evolved over both space and time. We applied a novel approach...
Assessment of tight-gas resources in Canyon sandstones of the Val Verde Basin, Texas, 2016
Christopher J. Schenk, Marilyn E. Tennyson, Timothy R. Klett, Tracey J. Mercier, Michael E. Brownfield, Stephanie B. Gaswirth, Sarah J. Hawkins, Heidi M. Leathers-Miller, Kristen R. Marra, Thomas M. Finn, Janet K. Pitman
2016, Fact Sheet 2016-3039
Using a geology-based assessment methodology, the U.S. Geological Survey assessed mean resources of 5 trillion cubic feet of gas and 187 million barrels of natural gas liquids in tight-gas assessment units in the Canyon sandstones of the Val Verde Basin, Texas....
Assessment of shale-gas resources of the Karoo Province, South Africa and Lesotho, Africa, 2016
Michael E. Brownfield, Christopher J. Schenk, Timothy R. Klett, Janet K. Pitman, Marilyn E. Tennyson, Stephanie B. Gaswirth, Phuong A. Le, Heidi M. Leathers-Miller, Tracey J. Mercier, Thomas M. Finn
2016, Fact Sheet 2016-3038
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resource of 44.5 trillion cubic feet of shale gas in the Karoo Province of South Africa and Lesotho, Africa....
Assessment of undiscovered continuous oil and gas resources in the Monterey Formation, Los Angeles Basin Province, California, 2015
Marilyn E. Tennyson, Ronald R. Charpentier, Timothy R. Klett, Michael E. Brownfield, Janet K. Pitman, Stephanie B. Gaswirth, Sarah J. Hawkins, Phuong A. Le, Paul G. Lillis, Kristen R. Marra, Tracey J. Mercier, Heidi M. Leathers-Miller, Christopher J. Schenk
2016, Fact Sheet 2016-3036
Using a geology-based assessment methodology, the U.S. Geological Survey assessed technically recoverable mean resources of 13 million barrels of oil, 22 billion cubic feet of gas, and 1 million barrels of natural gas liquids in the Monterey Formation of the Los Angeles Basin Province, California....
Using Cape Sable seaside sparrow distribution data for water management decision support
James M. Beerens, Stephanie S. Romanach
2016, Report, Report to the U.S. Fish and Wildlife Service
The Cape Sable Seaside Sparrow (Ammodramus maritimus mirabilis; hereafter sparrow) is endemic to south Florida and a key indicator species of marl prairie, the most diverse freshwater community in the Florida Everglades. Marl prairie habitat is shaped by intermediate levels of disturbances such as flooding, drying, and fire, which maintain...
Ichthyophonus parasite phylogeny based on ITS rDNA structure prediction and alignment identifies six clades, with a single dominant marine type
Jacob Gregg, Rachel L. Thompson, Maureen K. Purcell, Carolyn S. Friedman, Paul Hershberger
2016, Diseases of Aquatic Organisms (120) 125-141
Despite their widespread, global impact in both wild and cultured fishes, little is known of the diversity, transmission patterns, and phylogeography of parasites generally identified as Ichthyophonus. This study constructed a phylogeny based on the structural alignment of internal transcribed spacer (ITS) rDNA sequences to compare Ichthyophonus isolates from fish...
Geologic context of recurring slope lineae in Melas and Coprates Chasmata, Mars
Matthew Chojnacki, Alfred McEwen, Colin M. Dundas, Lujendra Ojha, Anna Urso, Sarah Sutton
2016, Journal of Geophysical Research E: Planets (121) 1-28
One of the major Mars discoveries of recent years is the existence of recurring slope lineae (RSL), which suggests that liquid water occurs on or near the surface of Mars today. These dark and narrow features emerge from steep, rocky exposures and incrementally grow, fade, and reform on a seasonal...
M≥7 Earthquake rupture forecast and time-dependent probability for the Sea of Marmara region, Turkey
Maura Murru, Aybige Akinci, Guiseppe Falcone, Stefano Pucci, Rodolfo Console, Thomas E. Parsons
2016, Journal of Geophysical Research (121) 2679-2707
We forecast time-independent and time-dependent earthquake ruptures in the Marmara region of Turkey for the next 30 years using a new fault-segmentation model. We also augment time-dependent Brownian Passage Time (BPT) probability with static Coulomb stress changes (ΔCFF) from interacting faults. We calculate Mw > 6.5 probability from 26 individual...
Demography of an apex predator at the edge of its range: impacts of changing sea ice on polar bears in Hudson Bay
Nicholas J. Lunn, Sabrina Servanty, Eric V. Regehr, Sarah J. Converse, Evan S. Richardson, Ian Stirling
2016, Ecological Applications (26) 1302-1320
Changes in the abundance and distribution of wildlife populations are common consequences of historic and contemporary climate change. Some Arctic marine mammals, such as the polar bear (Ursus maritimus), may be particularly vulnerable to such changes due to the loss of Arctic sea ice. We evaluated the impacts of environmental...
Density-dependent home-range size revealed by spatially explicit capture–recapture
M.G. Efford, Deanna K. Dawson, Y.V. Jhala, Q. Qureshi
2016, Ecography (39) 676-688
The size of animal home ranges often varies inversely with population density among populations of a species. This fact has implications for population monitoring using spatially explicit capture–recapture (SECR) models, in which both the scale of home-range movements σ and population density D usually appear as parameters, and both may...
Controls on methane concentrations and fluxes in streams draining human-dominated landscapes
John T. Crawford, Emily H. Stanley
2016, Ecological Applications (26) 1581-1591
Streams and rivers are active processors of carbon, leading to significant emissions of CO2 and possibly CH4 to the atmosphere. Patterns and controls of CH4 in fluvial ecosystems remain relatively poorly understood. Furthermore, little is known regarding how major human impacts to fluvial ecosystems may be transforming their role as...
Composition and structure of the shallow subsurface of Ceres revealed by crater morphology
Michael T. Bland, Carol A. Raymond, Paul M. Schenk, Roger R. Fu, Thomas Kneisl, Jan Hendrick Pasckert, Harald Hiesinger, Frank Preusker, Ryan S. Park, Simone Marchi, Scott King, Julie C. Castillo-Rogez, Christopher T. Russell
2016, Nature Geoscience (9) 538-542
Before NASA’s Dawn mission, the dwarf planet Ceres was widely believed to contain a substantial ice-rich layer below its rocky surface. The existence of such a layer has significant implications for Ceres’s formation, evolution, and astrobiological potential. Ceres is warmer than icy worlds in the outer Solar System and, if...
Hyperspectral surveying for mineral resources in Alaska
Raymond F. Kokaly, Garth E. Graham, Todd M. Hoefen, Karen D. Kelley, Michaela R. Johnson, Bernard E. Hubbard
2016, Fact Sheet 2016-3029
Alaska is a major producer of base and precious metals and has a high potential for additional undiscovered mineral resources. However, discovery is hindered by Alaska’s vast size, remoteness, and rugged terrain. New methods are needed to overcome these obstacles in order to fully evaluate Alaska’s geology and mineral resource...
Disease surveillance of Atlantic herring: molecular characterization of hepatic coccidiosis and a morphological report of a novel intestinal coccidian
Sarah E Friend, J Lovey, Paul Hershberger
2016, Diseases of Aquatic Organisms (120) 91-107
Surveillance for pathogens of Atlantic herring, including viral hemorrhagic septicemia virus (VHSV),Ichthyophonus hoferi, and hepatic and intestinal coccidians, was conducted from 2012 to 2016 in the NW Atlantic Ocean, New Jersey, USA. Neither VHSV nor I. hoferi was detected in any sample. Goussia clupearum was found in the livers of 40 to 78% of...
Delta smelt: Life history and decline of a once abundant species in the San Francisco Estuary
Peter B. Moyle, Larry R. Brown, John R Durand, James A. Hobbs
2016, San Francisco Estuary and Watershed Science (14)
This paper reviews what has been learned about Delta Smelt and its status since the publication of The State of Bay-Delta Science, 2008 (Healey et al. 2008). The Delta Smelt is endemic to the upper San Francisco Estuary. Much of its historic habitat is no longer available and...
A framework for assessing the feasibility of native fish conservation translocations: Applications to threatened bull trout
Benjamin T. Galloway, Clint C. Muhlfeld, Christopher S. Guy, Christopher C. Downs, Wade A. Fredenberg
2016, North American Journal of Fisheries Management (36) 754-768
There is an urgent need to consider more aggressive and direct interventions for the conservation of freshwater fishes that are threatened by invasive species, habitat loss, and climate change. Conservation introduction (moving a species outside its indigenous range to other areas where conditions are predicted to be more suitable)...
Widespread detection of highly pathogenic H5 influenza viruses in wild birds from the Pacific Flyway of the United States
S.N. Bevins, Robert J. Dusek, C. LeAnn White, Thomas Gidlewski, B. Bodenstein, Kristin G. Mansfield, Paul DeBruyn, Donald K. Kraege, E. L. Rowan, Colin Gillin, B. Thomas, S. Chandler, J. Baroch, B. Schmit, M. J. Grady, R. S. Miller, M.L. Drew, S. Stopak, B. Zscheile, J. Bennett, J. Sengl, Caroline Brady, S. Ip, Erica Spackman, M. L. Killian, Mia Kim Torchetti, Jonathan M. Sleeman, T.J. DeLiberto
2016, Scientific Reports (6)
A novel highly pathogenic avian influenza virus belonging to the H5 clade 2.3.4.4 variant viruses was detected in North America in late 2014. Motivated by the identification of these viruses in domestic poultry in Canada, an intensive study was initiated to conduct highly pathogenic avian influenza surveillance in wild birds...
Detection, prevalence, and transmission of avian hematozoa in waterfowl at the Arctic/sub-Arctic interface: co-infections, viral interactions, and sources of variation.
Brandt W. Meixell, Todd W. Arnold, Mark S. Lindberg, Matthew M. Smith, Andrew M. Ramey, Jonathan A. Runstadler
2016, Parasites & Vectors (9)
Background: The epidemiology of avian hematozoa at high latitudes is still not well understood, particularly in sub-Arctic and Arctic habitats, where information is limited regarding seasonality and range of transmission, co-infection dynamics with parasitic and viral agents, and possible fitness consequences of infection. Such information is important as climate warming...
Geologic map of the Murray Quadrangle, Newton County, Arkansas
Mark R. Hudson, Kenzie J. Turner
2016, Scientific Investigations Map 3360
This map summarizes the geology of the Murray quadrangle in the Ozark Plateaus region of northern Arkansas. Geologically, the area is on the southern flank of the Ozark dome, an uplift that has the oldest rocks exposed at its center, in Missouri. Physiographically, the Murray quadrangle is within the Boston...
Forecasting the relative influence of environmental and anthropogenic stressors on polar bears
Todd C. Atwood, Bruce G. Marcot, David C. Douglas, Steven C. Amstrup, Karyn D. Rode, George M. Durner, Jeffrey F. Bromaghin
2016, Ecosphere (7)
Effective conservation planning requires understanding and ranking threats to wildlife populations. We developed a Bayesian network model to evaluate the relative influence of environmental and anthropogenic stressors, and their mitigation, on the persistence of polar bears (Ursus maritimus). Overall sea ice conditions, affected by rising global temperatures, were the most...
Identifying bird and reptile vulnerabilities to climate change in the southwestern United States
James R. Hatten, J. Tomasz Giermakowski, Jennifer A. Holmes, Erika M. Nowak, Matthew J. Johnson, Kirsten E. Ironside, Charles van Riper III, Michael Peters, Charles Truettner, Kenneth L. Cole
2016, Open-File Report 2016-1085
Current and future breeding ranges of 15 bird and 16 reptile species were modeled in the Southwestern United States. Rather than taking a broad-scale, vulnerability-assessment approach, we created a species distribution model (SDM) for each focal species incorporating climatic, landscape, and plant variables. Baseline climate (1940–2009) was characterized with Parameter-elevation...
Identifying Kittlitz's Murrelet nesting habitat in North America at the landscape scale
Jonathan J. Felis, Michelle L. Kissling, Robb S.A. Kaler, Leah A. Kenney, Matthew J. Lawonn
2016, Journal of Fish and Wildlife Management (7) 323-333
The Kittlitz's Murrelet (Brachyramphus brevirostris) is a small, non-colonial seabird endemic to marine waters of Alaska and eastern Russia that may have experienced significant population decline in recent decades, in part because of low reproductive success and terrestrial threats. Although recent studies have shed new light on Kittlitz's Murrelet nesting...
Biogeochemical controls of uranium bioavailability from the dissolved phase in natural freshwaters
Marie Noele Croteau, Christopher C. Fuller, Daniel J. Cain, Kate M. Campbell, George R. Aiken
2016, Environmental Science & Technology (50) 8120-8127
To gain insights into the risks associated with uranium (U) mining and processing, we investigated the biogeochemical controls of U bioavailability in the model freshwater speciesLymnaea stagnalis (Gastropoda). Bioavailability of dissolved U(VI) was characterized in controlled laboratory experiments over a range of water hardness, pH, and in the presence of complexing...
The Pilot Valley shoreline: An early record of Lake Bonneville dynamics
David M. Miller, Geoffrey Phelps
2016, Book chapter, Developments in Earth Surface Processes 20
The Pilot Valley shoreline is named for distinctive gravel beaches on the eastern, northern, and western sides of Pilot Valley playa, Utah. The shoreline has been identified across the Bonneville basin where it is characterized by one to three beach crests between ~ 1305 and 1309 m elevation, all overlain by deep-water...
Spectral nature of CO2 adsorption onto meteorites
Genesis Berlanga, Charles A Hibbitts, Driss Takir, Draby M Dyar, Elizabeth Sklute
2016, Icarus (280) 366-377
Previous studies have identified carbon dioxide (CO2) on the surfaces of Jovian and Galilean satellites in regions of non-ice material that are too warm for CO2 ice to exist. CO2 ice would quickly sublimate if not retained by a less-volatile material. To ascertain what non-ice species may be responsible for stabilizing this...
