Spatially explicit population estimates for black bears based on cluster sampling
J. Humm, J. Walter McCown, B.K. Scheick, Joseph D. Clark
2017, Journal of Wildlife Management (81) 1187-1201
We estimated abundance and density of the 5 major black bear (Ursus americanus) subpopulations (i.e., Eglin, Apalachicola, Osceola, Ocala-St. Johns, Big Cypress) in Florida, USA with spatially explicit capture-mark-recapture (SCR) by extracting DNA from hair samples collected at barbed-wire hair sampling sites. We employed a clustered sampling configuration with sampling...
Shear-wave velocity model from Rayleigh wave group velocities centered on the Sacramento/San Joaquin Delta
Jon Peter B. Fletcher, Jemile Erdem
2017, Pure and Applied Geophysics (174) 3825-3839
Rayleigh wave group velocities obtained from ambient noise tomography are inverted for an upper crustal model of the Central Valley, California, centered on the Sacramento/San Joaquin Delta. Two methods were tried; the first uses SURF96, a least-squares routine. It provides a good fit to the data, but convergence is dependent...
Delayed seismicity rate changes controlled by static stress transfer
Kayla A. Kroll, Keith B. Richards-Dinger, James H. Dieterich, Elizabeth S. Cochran
2017, Journal of Geophysical Research B: Solid Earth (122) 7951-7965
On 15 June 2010, a Mw5.7 earthquake occurred near Ocotillo, California, in the Yuha Desert. This event was the largest aftershock of the 4 April 2010 Mw7.2 El Mayor-Cucapah (EMC) earthquake in this region. The EMC mainshock and subsequent Ocotillo aftershock provide an opportunity to test the Coulomb failure hypothesis (CFS). We...
Partial polygon pruning of hydrographic features in automated generalization
Alexander K. Stum, Barbara P. Buttenfield, Larry V. Stanislawski
2017, Transactions in GIS (21) 1061-1078
This paper demonstrates a working method to automatically detect and prune portions of waterbody polygons to support creation of a multi-scale hydrographic database. Water features are known to be sensitive to scale change; and thus multiple representations are required to maintain visual and geographic logic at smaller scales. Partial pruning...
Climate change and alpine stream biology: progress, challenges, and opportunities for the future
Scott Hotaling, Debra S. Finn, J. Joseph Giersch, David W. Weisrock, Dean Jacobsen
2017, Biological Reviews (92) 2024-2045
In alpine regions worldwide, climate change is dramatically altering ecosystems and affecting biodiversity in many ways. For streams, receding alpine glaciers and snowfields, paired with altered precipitation regimes, are driving shifts in hydrology, species distributions, basal resources, and threatening the very existence of some habitats and biota. Alpine streams harbour...
Strong SH-to-Love wave scattering off the Southern California Continental Borderland
Chunquan Yu, Zhongwen Zhan, Egill Hauksson, Elizabeth S. Cochran
2017, Geophysical Research Letters (44) 10208-10215
Seismic scattering is commonly observed and results from wave propagation in heterogeneous medium. Yet, deterministic characterization of scatterers associated with lateral heterogeneities remains challenging. In this study, we analyze broadband waveforms recorded by the Southern California Seismic Network and observe strongly scattered Love waves following the arrival of teleseismic SH...
The nexus of fun and nutrition: Recreational fishing is also about food
Steven J. Cooke, William M. Twardek, Robert J. Lennox, Aaron J. Zolderdo, Shannon D. Bower, Lee F. G. Gutowsky, Andy J. Danylchuk, Robert Arlinghaus, Beard Jr.
2017, Fish and Fisheries (19) 2012-224
Recreational fishing is a popular activity in aquatic ecosystems around the globe using a variety of gears including rod and line and to a lesser extent handlines, spears, bow and arrow, traps and nets. Similar to the propensity to engage in voluntary catch-and-release, the propensity to harvest fishes strongly varies...
Shallow microearthquakes near Chongqing, China triggered by the Rayleigh waves of the 2015 M7.8 Gorkha, Nepal earthquake
Libo Han, Zhigang Peng, Christopher W. Johnson, Frederick Pollitz, Lu Li, Baoshan Wang, Jing Wu, Qiang Li, Hongmei Wei
2017, Earth and Planetary Science Letters (479) 231-240
We present a case of remotely triggered seismicity in Southwest China by the 2015/04/25 M7.8 Gorkha, Nepal earthquake. A local magnitude ML3.8 event occurred near the Qijiang district south of Chongqing city approximately 12 min after the Gorkha mainshock. Within 30km of this ML3.8 event there are 62 earthquakes since...
Potential paths for male-mediated gene flow to and from an isolated grizzly bear population
Christopher P. Peck, Frank T. van Manen, Cecily M. Costello, Mark A. Haroldson, Lisa Landenburger, Lori L. Roberts, Daniel D. Bjornlie, Richard D. Mace
2017, Ecosphere (8) 1-19
For several decades, grizzly bear populations in the Greater Yellowstone Ecosystem (GYE) and the Northern Continental Divide Ecosystem (NCDE) have increased in numbers and range extent. The GYE population remains isolated and although effective population size has increased since the early 1980s, genetic connectivity between these populations remains a long-term...
U.S. Geological Survey input-data forms for the assessment of the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas, 2017
Kristen R. Marra
2017, Open-File Report 2017-1117
In 2017, the U.S. Geological Survey (USGS) completed an updated assessment of undiscovered, technically recoverable oil and gas resources in the Spraberry Formation of the Midland Basin (Permian Basin Province) in southwestern Texas (Marra and others, 2017). The Spraberry Formation was assessed using both the standard continuous (unconventional) and conventional...
Simulation of daily streamflow for 12 river basins in western Iowa using the Precipitation-Runoff Modeling System
Daniel E. Christiansen, Adel E. Haj, John C. Risley
2017, Scientific Investigations Report 2017-5091
The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources, constructed Precipitation-Runoff Modeling System models to estimate daily streamflow for 12 river basins in western Iowa that drain into the Missouri River. The Precipitation-Runoff Modeling System is a deterministic, distributed-parameter, physical-process-based modeling system developed to evaluate the...
Geologic map of the Dusar area, Herat Province, Afghanistan; Modified from the 1973 original map compilations of V.I. Tarasenko and others
2017, Open-File Report 2017-1126
The geologic maps and cross sections presented in this report are redrafted and modified versions of the Geologic map and map of useful minerals of the Dusar area (scale 1:50,000) and Geologic sketch map of the Dusar and Namak-sory ore occurrences (scale 1:10,000), located in the Herat Province, Afghanistan. The...
Some results from ModEM3DMT, the freely available OSU 3D MT inversion code
Gary D. Egbert, Naser Meqbel, Anna Kelbert
2017, Conference Paper
At the 3DEM-5 workshop in 2013, we presented a paper entitled "ModEM: developing 3D EM inversion for the masses", outlining our then recent development of a modular system for inversion of EM geophysical data, called ModEM. As promised in that presentation, we made a version of the code that is...
A coupled metabolic-hydraulic model and calibration scheme for estimating of whole-river metabolism during dynamic flow conditions
Robert A. Payn, Robert O Hall, Theodore A. Kennedy, Geoff C Poole, Lucy A. Marshall
2017, Limnology and Oceanography: Methods (15) 847-866
Conventional methods for estimating whole-stream metabolic rates from measured dissolved oxygen dynamics do not account for the variation in solute transport times created by dynamic flow conditions. Changes in flow at hourly time scales are common downstream of hydroelectric dams (i.e. hydropeaking), and hydrologic limitations of conventional metabolic models...
Movements of Atlantic Sturgeon of the Gulf of Maine inside and outside the geographically defined Distinct Population Segment
Gail S. Wippelhauser, James Sulikowski, Gayle B. Zydlewski, Megan Altenritter, Micah Kieffer, Michael T. Kinnison
2017, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (9) 93-107
Identification of potential critical habitat, seasonal distributions, and movements within and between river systems is important for protecting the Gulf of Maine (GOM) Distinct Population Segment of Atlantic Sturgeon. To accomplish these objectives, we captured Atlantic Sturgeon in four GOM rivers (Penobscot, Kennebec system, Saco, and Merrimack), and tagged...
Riverine discharges to Chesapeake Bay: Analysis of long-term (1927–2014) records and implications for future flows in the Chesapeake Bay basin
Karen C. Rice, Douglas L. Moyer, Aaron L. Mills
2017, Journal of Environmental Management (204) 246-254
The Chesapeake Bay (CB) basin is under a total maximum daily load (TMDL) mandate to reduce nitrogen, phosphorus, and sediment loads to the bay. Identifying shifts in the hydro-climatic regime may help explain observed trends in water quality. To identify potential shifts, hydrologic data (1927–2014) for 27 watersheds in the...
HERA: A dynamic web application for visualizing community exposure to flood hazards based on storm and sea level rise scenarios
Jeanne M. Jones, Kevin Henry, Nathan J. Wood, Peter Ng, Matthew Jamieson
2017, Computers & Geosciences (109) 124-133
The Hazard Exposure Reporting and Analytics (HERA) dynamic web application was created to provide a platform that makes research on community exposure to coastal-flooding hazards influenced by sea level rise accessible to planners, decision makers, and the public in a manner that is both easy to use and easily accessible....
Estimation and uncertainty of recent carbon accumulation and vertical accretion in drained and undrained forested peatlands of the southeastern USA
Judith Z. Drexler, Christopher C. Fuller, James L. Orlando, Antonia Salas, Frederic C. Wurster, Jamie A. Duberstein
2017, Journal of Geophysical Research: Biogeosciences (122) 2563-2579
The purpose of this study was to determine how drainage impacts carbon densities and recent rates (past 50 years) of vertical accretion and carbon accumulation in southeastern forested peatlands. We compared these parameters in drained maple-gum (MAPL), Atlantic white cedar (CDR), and pocosin (POC) communities in the Great Dismal Swamp National...
Remote measurement of river discharge using thermal particle image velocimetry (PIV) and various sources of bathymetric information
Carl J. Legleiter, Paul J. Kinzel, Jonathan M. Nelson
2017, Journal of Hydrology (554) 490-506
Although river discharge is a fundamental hydrologic quantity, conventional methods of streamgaging are impractical, expensive, and potentially dangerous in remote locations. This study evaluated the potential for measuring discharge via various forms of remote sensing, primarily thermal imaging of flow velocities but also spectrally-based depth retrieval from passive optical image...
Reconstructing the evolution of the submarine Monterey Canyon System from Os, Nd, and Pb isotopes in hydrogenetic Fe-Mn crusts
T.A. Conrad, S.G. Nielsen, Bernhard Peucker-Ehrenbrink, J. Blusztajn, D. Winslow, James R. Hein, A. Paytan
2017, Geochemistry, Geophysics, Geosystems (18) 3946-3963
The sources of terrestrial material delivered to the California margin over the past 7 Myr were assessed using 187Os/188Os, Nd, and Pb isotopes in hydrogenetic ferromanganese crusts from three seamounts along the central and southern California margin. From 6.8 to 4.5 (± 0.5) Ma, all three isotope systems show more radiogenic...
Arctic deep-water ferromanganese-oxide deposits reflect the unique characteristics of the Arctic Ocean
James R. Hein, Natalia Konstantinova, Mariah Mikesell, Kira Mizell, Jessica N. Fitzsimmons, Phoebe Lam, Laramie T. Jensen, Yang Xiang, Amy Gartman, Georgy Cherkashov, Deborah Hutchinson, Claire P. Till
2017, Geochemistry, Geophysics, Geosystems (18) 3771-3800
Little is known about marine mineral deposits in the Arctic Ocean, an ocean dominated by continental shelf and basins semi-closed to deep-water circulation. Here, we present data for ferromanganese crusts and nodules collected from the Amerasia Arctic Ocean in 2008, 2009, and 2012 (HLY0805, HLY0905, HLY1202). We determined...
Assessment of an in-channel redistribution technique for large woody debris management in Locust Creek, Linn County, Missouri
David C. Heimann
2017, Scientific Investigations Report 2017-5120
The U.S. Geological Survey, in cooperation with the Missouri Department of Conservation and Missouri Department of Natural Resources, completed a study to assess a mechanical redistribution technique used for the management of large woody debris (LWD) jams in Locust Creek within Pershing State Park and Fountain Grove Conservation Area, Linn...
A effective DNA vaccine against diverse genotype J infectious hematopoietic necrosis virus strains prevalent in China
Liming Xu, Jingzhuang Zhao, Miao Liu, Gael Kurath, Guangming Ren, Scott E. LaPatra, Jiasheng Yin, Hongbai Liu, Jian Feng, Tongyan Lu
2017, Vaccine (35) 2420-2426
Infectious hematopoietic necrosis virus (IHNV) is the most important pathogen threatening the aquaculture of salmonid fish in China. In this study, a DNA vaccine, designated pIHNch-G, was constructed with the glycoprotein (G) gene of a Chinese IHNV isolate SD-12 (also called Sn1203) of genotype J. The minimal dose of vaccine...
Quantifying the effects of wildfire on changes in soil properties by surface burning of soils from the Boulder Creek Critical Zone Observatory
Celeste Wieting, Brian A. Ebel, Kamini Singha
2017, Journal of Hydrology: Regional Studies (13) 43-57
Study regionThis study used intact soil cores collected at the Boulder Creek Critical Zone Observatory near Boulder, Colorado, USA to explore fire impacts on soil properties.Study focusThree soil scenarios were considered: unburned control soils, and low- and high-temperature burned soils. We explored simulated fire...
Endozoicomonas dominates the gill and intestinal content microbiomes of Mytilus edulis from Barnegat Bay, New Jersey
William B. Schill, Deborah D. Iwanowicz, Cynthia R. Adams
2017, Journal of Shellfish Research (36) 391-401
Blue mussels, Mytilus edulis, Linnaeus 1758 from southern Barnegat Bay, New Jersey were examined to determine the make-up of the normal blue mussel microbiome. Sequencing of 16S ribosomal DNA amplicons from gill and intestinal content microbiomes using the Illumina® MiSeq platform yielded 1,276,161 paired end sequence reads from the...
