Bedrock geologic map of the Littleton and Lower Waterford quadrangles, Essex and Caledonia Counties, Vermont, and Grafton County, New Hampshire
Douglas W. Rankin
2018, Open-File Report 2018-1087
The bedrock geologic map of the Littleton and Lower Waterford quadrangles covers an area of approximately 107 square miles (277 square kilometers) north and south of the Connecticut River in east-central Vermont and adjacent New Hampshire. This map was created as part of a larger effort to produce a new...
Preface to the Focus Section on the Collaboratory for the Study of Earthquake Predictability (CSEP): New results and future directions
Andrew J. Michael, Maximillian J. Werner
2018, Seismological Research Letters (89) 1226-1228
The Collaboratory for the Study of Earthquake Predictability (CSEP; Jordan, 2006) carries out fully prospective tests of earthquake forecasts, using fixed and standardized statistical tests and authoritative data sets, to assess the predictive skill of forecast models and to make objective comparisons between models. CSEP conducts...
The complete mitochondrial genome of the stalk-forming diatom Didymosphenia geminata
Aaron Aunins, Donald Hamilton, Tim L. King
2018, Mitochondrial DNA Part B (2) 676-677
The complete mitogenome of the stalk-forming diatom Didymosphenia geminata collected from Mineral County, WV, USA was sequenced on the Ion Torrent PGM and Proton sequencers. The D. geminata mitogenome is 37,765 bp and encodes 35 protein coding genes, 25 tRNAs, and both large and small subunit ribosomal RNA genes. The nad11 gene is split into two...
Divergent effects of land-use, propagule pressure, and climate on woody riparian invasion
Laura G Perry, Lindsay V. Reynolds, Patrick B. Shafroth
2018, Biological Invasions (20) 3271-3295
Landscape-scale analyses of biological invasion are needed to understand the relative importance of environmental drivers that vary at larger scales, such as climate, propagule pressure, resource availability, and human disturbance. One poorly understood landscape-scale question is, how does human land-use influence riparian plant invasion? To evaluate...
Sea-level rise could overwhelm coral reefs
Ilsa B. Kuffner
2018, Nature (558) 378-379
An assessment of the capacity of coral reefs to grow fast enough to keep up with projected rises in sea level finds that most reefs will fall behind if nothing is done to restore them....
Global and local sources of mercury deposition in coastal New England reconstructed from a multi-proxy, high-resolution, estuarine sediment record
William. F Fitzgerald, Daniel R Engstrom, Chad Hammerschmidt, Carl Lamborg, Prentiss Balcom, Ana Lima-Braun, Michael H. Bothner, Christopher M. Reddy
2018, Environmental Science & Technology (52) 7614-7620
Historical reconstruction of mercury (Hg) accumulation in natural archives, especially lake sediments, has been essential to understanding human perturbation of the global Hg cycle. Here we present a high-resolution chronology of Hg accumulation between 1727 and 1996 in a varved sediment...
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...
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...
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...
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...
Cyanobacteria reduce quagga mussel (Dreissena rostriformis bugensis) spawning and fertilization success
Anna G. Boegehold, Nicholas S. Johnson, Jeffrey L. Ran, Donna R. Kashian
2018, Freshwater Science (37) 510-518
Quagga mussels (Dreissena rostriformis bugensis) are highly fecund broadcast spawners invasive to freshwaters of North America and western Europe. We hypothesized that environmental cues from phytoplankton can trigger gamete release in quagga mussels. Nutritious algae may stimulate dreissenid spawning, but less palatable food, such as bloom-forming cyanobacteria, could be a...
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...
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...
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...
Large-scale variation in density of an aquatic ecosystem indicator species
Chris Sutherland, Angela K. Fuller, Andy 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...
Celebrating 50 years of SWIMs (Salt Water Intrusion Meetings)
Vincent E. A. Post, Gualbert Oude Essink, Adam Szymkiewicz, Mark Bakker, Georg Houben, Emilio Custodio, Clifford I. Voss
2018, Hydrogeology Journal (26) 1767-1770
The Salt Water Intrusion Meetings, or SWIMs, are a series of meetings that focus on seawater intrusion in coastal aquifers and other salinisation processes. 2018 marks the 50th year of the SWIM and the 25th biennial meeting. The SWIM proceedings record half a century of research progress on site characterisation,...
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...
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...
