Streamflow and selenium loads during synoptic sampling of the Gunnison River and its tributaries near Delta, Colorado, November 2015
Michael R. Stevens, Kenneth J. Leib, Judith C. Thomas, Nancy J. Bauch, Rodney J. Richards
2018, Scientific Investigations Report 2018-5029
In response to the need for more information about selenium (Se) sources and transport, the U.S. Geological Survey, in cooperation with the Colorado Water Conservation Board, completed a study that characterized Se loads in a reach of the Gunnison River between Delta and Grand Junction, Colo. This report identifies where...
Ensemble smoothed seismicity models for the new Italian Probabilistic Seismic Hazard Map
Aybige Akinci, Morgan P. Moschetti, Matteo Taroni
2018, Seismological Research Letters (89) 1277-1287
We develop a long‐term (a few decades or longer) earthquake rate forecast for Italy based on smoothed seismicity for incorporation in the 2017–2018 Italian Probabilistic Seismic Hazard Maps (IPSHM). Because the earthquake rate models from previous IPSHM were computed using source zones that were drawn around seismicity and tectonic provinces,...
Nonbreeding duck use at Central Flyway National Wildlife Refuges
Kent Andersson, Craig A. Davis, Grant Harris, David A. Haukos
2018, Journal of Fish and Wildlife Management (9) 45-64
Within the U.S. portion of the Central Flyway, the U.S. Fish and Wildlife Service manages waterfowl on numerous individual units (i.e., Refuges) within the National Wildlife Refuge System. Presently, the extent of waterfowl use that Refuges receive and the contribution of Refuges to waterfowl populations (i.e., the proportion of the...
Multistate models of bigheaded carps in the Illinois River reveal spatial dynamics of invasive species
Alison A. Coulter, Marybeth K. Brey, Matthew Lubejko, Jahn L. Kallis, David P. Coulter, David C. Glover, James E. Garvey, Gregory W. Whitledge
2018, Biological Invasions (20) 3255-3270
Knowledge of the spatial distributions and dispersal characteristics of invasive species is necessary for managing the spread of highly mobile species, such as invasive bigheaded carps (Bighead Carp [Hypophthalmichthys nobilis] and Silver Carp [H. molitrix]). Management of invasive bigheaded carps in the Illinois River has focused...
Protection from UV light is an evolutionarily conserved feature of the haematopoietic niche
Friedrich G. Kapp, Julie R. Perlin, Elliott J. Hagedorn, John M. Gansner, Daniel E. Schwarz, Lauren A. O’Connell, Nicholas S. Johnson, Chris Amemiya, David E. Fisher, Ute Wolfle, Eirini Trompouki, Charlotte M. Niemeyer, Wolfgang Driever, Leonard I. Zon
2018, Nature (558) 445-448
Haematopoietic stem and progenitor cells (HSPCs) require a specific microenvironment, the haematopoietic niche, which regulates HSPC behaviour. The location of this niche varies across species, but the evolutionary pressures that drive HSPCs to different microenvironments remain unknown. The niche is located in the bone marrow in adult mammals, whereas it...
National Satellite Land Remote Sensing Data Archive
John Faundeen, Ryan Longhenry
2018, Fact Sheet 2018-3027
The National Satellite Land Remote Sensing Data Archive is managed on behalf of the Secretary of the Interior by the U.S. Geological Survey’s Earth Resources Observation and Science Center. The Land Remote Sensing Policy Act of 1992 (51 U.S.C. §601) directed the U.S. Department of the Interior to establish a...
Characterization of Sea Lamprey stream entry using dual‐frequency identification sonar
Erin L. McCain, Nicholas S. Johnson, Peter J. Hrodey, Kevin L. Pangle
2018, Transactions of the American Fisheries Society (147) 514-524
Effective methods to control invasive Sea Lampreys Petromyzon marinus in the Laurentian Great Lakes often rely on knowledge of the timing of the Sea Lamprey spawning migration, which has previously been characterized using data gathered from traps. Most assessment traps are located many kilometers upstream from the river mouth, so less is...
A distributed pipeline for DIDSON data processing
Liling Li, Tyler Danner, Jesse Eickholt, Erin L. McCann, Kevin Pangle, Nicholas S. Johnson
2018, Conference Paper, 2017 IEEE International Conference on Big Data
Technological advances in the field of ecology allow data on ecological systems to be collected at high resolution, both temporally and spatially. Devices such as Dual-frequency Identification Sonar (DIDSON) can be deployed in aquatic environments for extended periods and easily generate several terabytes of underwater surveillance data which may need...
Rapid 3-D analysis of rockfalls
Greg M. Stock, A. Guerin, Nikita N. Avdievitch, Brian D. Collins, Michel Jaboyedoff
2018, GSA Today (28)
Recent fatal and damaging rockfalls in Yosemite National Park indicate the need for rapid response data collection methods to inform public safety and assist with management response. Here we show the use of multiple-platform remote sensing methods to rapidly capture pertinent data needed to inform management and the public...
Reexamination of the subsurface fault structure in the vicinity of the 1989 moment-magnitude-6.9 Loma Prieta earthquake, central California, using steep-reflection, earthquake, and magnetic data
Edward Zhang, Gary S. Fuis, Rufus D. Catchings, Daniel S. Scheirer, Mark Goldman, Klaus Bauer
2018, Open-File Report 2018-1093
We reexamine the geometry of the causative fault structure of the 1989 moment-magnitude-6.9 Loma Prieta earthquake in central California, using seismic-reflection, earthquake-hypocenter, and magnetic data. Our study is prompted by recent interpretations of a two-part dip of the San Andreas Fault (SAF) accompanied by a flower-like structure in the Coachella...
Large-scale variation in density of an aquatic ecosystem indicator species
Chris Sutherland, Angela K. Fuller, J. Andrew Royle, Matthew P. Hare, Sean Madden
2018, Scientific Reports (8) 1-10
Monitoring indicator species is a pragmatic approach to natural resource assessments, especially when the link between the indicator species and ecosystem state is well justified. However, conducting ecosystem assessments over representative spatial scales that are insensitive to local heterogeneity is challenging. We examine the link between polychlorinated biphenyl (PCB) contamination...
Broadband ground‐motion simulation of the 2011 Mw 6.2 Christchurch, New Zealand, earthquake
Hoby N. T. Razafindrakoto, Brendon A. Bradley, Robert Graves
2018, Bulletin of the Seismological Society of America (108) 2130-2147
This study presents the details and results of hybrid broadband (0–10 Hz) ground‐motion simulations for the 2011 Mw">MwMw 6.2 Christchurch, New Zealand, earthquake. The simulations utilize a 3D velocity...
Spatial patterns of development drive water use
G.M. Sanchez, J.W. Smith, Adam J. Terando, G. Sun, R.K. Meentemeyer
2018, Water Resources Research (54) 1633-1649
Water availability is becoming more uncertain as human populations grow, cities expand into rural regions and the climate changes. In this study, we examine the functional relationship between water use and the spatial patterns of developed land across the rapidly growing region of the southeastern United States. We quantified the...
Hydrographic surveys of rivers and lakes using a multibeam echosounder mapping system
Richard J. Huizinga, David C. Heimann
2018, Fact Sheet 2018-3021
A multibeam echosounder is a type of sound navigation and ranging device that uses sound waves to “see” through even murky waters. Unlike a single beam echosounder (also known as a depth sounder or fathometer) that releases a single sound pulse in a single, narrow beam and “listens” for the...
Looking beyond wildlife: Using remote cameras to evaluate accuracy of gridded snow data
Alexej P.K. Siren, Marcelo Somos-Valenzuela, Catherine Callahan, Jillian R. Kilborn, Timothy Duclos, Cassie Tragert, Toni Lyn Morelli
2018, Remote Sensing in Ecology and Conservation (4) 375-386
The use of remote cameras is widespread in wildlife ecology, yet few examples exist of their utility for collecting environmental data. We used a novel camera trap method to evaluate the accuracy of gridded snow data in a mountainous region of the northeastern US. We were specifically interested in assessing...
Evolving environmental and geometric controls on Columbia Glacier’s continued retreat
Ellyn Enderlin, Shad O’Neel, Timothy C. Bartholomaus, Ian Joughin
2018, Journal of Geophysical Research- Earth Surface (123) 1528-1545
Geometry strongly controls the dynamic behavior of marine‐terminating (tidewater) glaciers, significantly influencing advance and retreat cycles independent of climate. Yet the recent, nearly ubiquitous retreat of tidewater glaciers suggests that changes in atmospheric and oceanic forcing may also drive dynamic change. To isolate the influence of geometry...
Acoustic telemetry observation systems: challenges encountered and overcome in the Laurentian Great Lakes
Charles C. Krueger, Christopher M. Holbrook, Thomas R. Binder, Christopher Vandergoot, Todd A. Hayden, Darryl W. Hondorp, Nancy Nate, Kelli Paige, Stephen Riley, Aaron T. Fisk, Steven J. Cooke
2018, Canadian Journal of Fisheries and Aquatic Sciences (75) 1755-1763
The Great Lakes Acoustic Telemetry Observation System (GLATOS), organized in 2012, aims to advance and improve conservation and management of Great Lakes fishes by providing information on behavior, habitat use, and population dynamics. GLATOS faced challenges during establishment, including a funding agency-imposed urgency to initiate projects, a lack of telemetry...
Real-time water quality monitoring at a Great Lakes National Park
Muruleedhara Byappanahalli, Meredith B. Nevers, Dawn Shively, Ashley Spoljaric, Christopher Otto
2018, Journal of Environmental Quality
Quantitative polymerase chain reaction (qPCR) was used by the USEPA to establish new recreational water quality criteria in 2012 using the indicator bacteria enterococci. The application of this method has been limited, but resource managers are interested in more timely monitoring results. In this study, we evaluated the efficacy of...
A history of trade routes and water-level regulation on waterways in Voyageurs National Park, Minnesota, USA
Victoria G. Christensen, Andrew E. LaBounty
2018, Conference Paper, World Environmental and Water Resources Congress 2018
Unlike most national parks, main access to Voyageurs National Park is by boat. This remote system of interconnected waterways along the USA-Canada border was an important transportation route for thousands of years of American Indian occupation, leading up to and including the trade route of the voyageurs, or French-Canadian fur...
Voyageurs National Park: Water-level regulation and effects on water quality and aquatic biology
Victoria G. Christensen, Ryan P. Maki, Jaime F. LeDuc
2018, Conference Paper, World Environmental and Water Resources Congress 2018
Following dam installations in the remote Rainy Lake Basin during the early 1900s, water-level fluctuations were considered extreme (1914–1949) compared to more natural conditions. In 1949, the International Joint Commission (IJC), which sets rules governing dam operation on waters shared by the United States and Canada, established the...
GIS-based method for estimating surficial groundwater levels in coastal Virginia using limited information
R.D. Johnson, David J. Sample, Kurt J. McCoy
2018, Journal of Irrigation and Drainage Engineering (144) 1-14
In many coastal areas, high water tables are present, complicating installation of some stormwater best management practices (BMPs) that rely on infiltration. Regional estimates of the seasonal high water table (SHWT) often rely on sources such as soil surveys taken over a decade ago; these data are static and do...
Ground-nesting great horned owl in Suisun Marsh, California
Shannon Skalos, Matthew J. Falcon, Olivia Wang, Andrea Lynn Mott, Melissa Hunt, Orlando Rocha, Joshua T. Ackerman, Michael L. Casazza, Joshua M. Hull
2018, California Fish and Game (104) 164-172
Great horned owls (Bubo virginianus) are widespread throughout North, Central, and parts of South America (Artuso et al. 2013). Across this range, great horned owls are generalists, occupying a diverse range of habitats including deciduous and coniferous forests, wetlands, and agricultural landscapes. Within these habitats, great horned owls are generally...
Preliminary geologic framework developed for a proposed environmental monitoring study of a deep, unconventional Marcellus Shale drill site, Washington County, Pennsylvania
Robert G. Stamm
2018, Open-File Report 2018-1057
BackgroundIn the fall of 2011, the U.S. Geological Survey (USGS) was afforded an opportunity to participate in an environmental monitoring study of the potential impacts of a deep, unconventional Marcellus Shale hydraulic fracturing site. The drill site of the prospective case study is the “Range Resources MCC Partners L.P. Units...
Geologic map of the Fort Morgan 7.5' quadrangle, Morgan County, Colorado
Margaret E. Berry, Emily M. Taylor, Janet L. Slate, James B. Paces, Paul R. Hanson, Theodore R. Brandt
2018, Scientific Investigations Map 3408
The Fort Morgan 7.5′ quadrangle is located on the semiarid plains of northeastern Colorado, along the South Platte River corridor where the river has incised into Upper Cretaceous Pierre Shale. The Pierre Shale is largely covered by surficial deposits that formed from alluvial, eolian, and hillslope processes operating in concert...
On the feasibility of real-time mapping of the geoelectric field across North America
Jeffrey J. Love, E. Joshua Rigler, Anna Kelbert, Carol A. Finn, Paul A. Bedrosian, Christopher C. Balch
2018, Open-File Report 2018-1043
A review is given of the present feasibility for accurately mapping geoelectric fields across North America in near-realtime by modeling geomagnetic monitoring and magnetotelluric survey data. Should this capability be successfully developed, it could inform utility companies of magnetic-storm interference on electric-power-grid systems. That real-time mapping of geoelectric fields is...
