Trends in methyl tert-butyl ether concentrations in private wells in southeast New Hampshire: 2005 to 2015
Sarah Flanagan, Joseph P. Levitt, Joseph D. Ayotte
2017, Environmental Science & Technology (51) 1168-1175
In southeast New Hampshire, where reformulated gasoline was used from the 1990s to 2007, methyl tert-butyl ether (MtBE) concentrations ≥0.2 μg/L were found in water from 26.7% of 195 domestic wells sampled in 2005. Ten years later in 2015, and eight years after MtBE was banned, 10.3% continue to have MtBE....
Effect of N fertilization and tillage on nitrous oxide (N2O) loss from soil under wheat production
Sheel Bansal, Ezra Aberle, Jasper Teboh, Szilvia Yuja, Mark Liebig, Jacob Meier, Alec Boyd
2017, Report, Carrington Research Extension Center Annual Report, A report of agricultural research and extension in central North Dakota, Vol 58
Nitrous oxide (N2O-N) is one of the most important gases in the atmosphere because it is 300 times more powerful than carbon dioxide in its ability to trap heat, and is a key chemical agent of ozone depletion. The amount of N2O-N emitted from agricultural fields can be quite high,...
Reexamination of the magnitudes for the 1906 and 1922 Chilean earthquakes using Japanese tsunami amplitudes: Implications for source depth constraints
M. Carvajal, M. Cisternas, A. Gubler, P. A. Catalan, P. Winckler, Robert L. Wesson
2017, Journal of Geophysical Research B: Solid Earth (122) 4-17
Far-field tsunami records from the Japanese tide gauge network allow the reexamination of the moment magnitudes (Mw) for the 1906 and 1922 Chilean earthquakes, which to date rely on limited information mainly from seismological observations alone. Tide gauges along the Japanese coast provide extensive records of tsunamis triggered by six...
Extreme geomagnetic storms: Probabilistic forecasts and their uncertainties
Pete Riley, Jeffrey J. Love
2017, Space Weather (15) 53-64
Extreme space weather events are low-frequency, high-risk phenomena. Estimating their rates of occurrence, as well as their associated uncertainties, is difficult. In this study, we derive statistical estimates and uncertainties for the occurrence rate of an extreme geomagnetic storm on the scale of the Carrington event (or worse) occurring within...
Detecting spatial regimes in ecosystems
Shana M. Sundstrom, Tarsha Eason, R. John Nelson, David G. Angeler, Chris Barichievy, Ahjond S. Garmestani, Nicholas A.J. Graham, Dean Granholm, Lance Gunderson, Melinda Knutson, Kirsty L. Nash, Trisha Spanbauer, Craig A. Stow, Craig R. Allen
2017, Ecology Letters (20) 19-32
Research on early warning indicators has generally focused on assessing temporal transitions with limited application of these methods to detecting spatial regimes. Traditional spatial boundary detection procedures that result in ecoregion maps are typically based on ecological potential (i.e. potential vegetation), and often fail to account for ongoing changes due...
Geochemical evidence for a complex origin for the Kelso dunes, Mojave National Preserve, California USA
Daniel R. Muhs, Nicholas Lancaster, Gary L. Skipp
2017, Geomorphology (276) 222-243
The Kelso Dune field in southern California is intriguing because although it is of limited areal extent (~ 100 km2), it has a wide variety of dune forms and contains many active dunes (~ 40 km2), which is unusual in the Mojave Desert. Studies over the past eight decades have concluded that the dunes...
Infectious hematopoietic necrosis virus virological and genetic surveillance 2000–2012
Rachel Breyta, Ilana L. Brito, Gael Kurath, Shannon L. LaDeau
2017, Ecology (98) 283-283
Surveillance records of the acute RNA pathogen of Pacific salmonid fish infectious hematopoietic necrosis virus are combined for the first time to enable landscape-level ecological analyses and modeling. The study area is the freshwater ecosystems of the large Columbia River watershed in the U.S. states of Washington, Oregon, and Idaho,...
Meteorological drivers of hypolimnetic anoxia in a eutrophic, north temperate lake
Craig A. Snortheim, Paul C. Hanson, Katherine D. McMahon, Jordan S. Read, Cayelan C. Carey, Hilary Dugan
2017, Ecological Modelling (343) 39-53
Oxygen concentration is both an indicator and driver of water quality in lakes. Decreases in oxygen concentration leads to altered ecosystem function as well as harmful consequences for aquatic biota, such as fishes. The responses of oxygen dynamics in lakes to climate-related drivers, such as temperature and wind speed, are...
Mapping tree canopy cover in support of proactive prairie grouse conservation in western North America
Michael J. Falkowski, Jeffrey S. Evans, David E. Naugle, Christian A. Hagen, Scott A. Carleton, Jeremy D. Maestas, Azad Henareh Khalyani, Aaron J. Poznanovic, Andrew J. Lawrence
2017, Rangeland Ecology and Management (70) 15-24
Invasive woody plant expansion is a primary threat driving fragmentation and loss of sagebrush (Artemisia spp.) and prairie habitats across the central and western United States. Expansion of native woody plants, including conifer (primarily Juniperus spp.) and mesquite (Prosopis spp.), over the past century is primarily attributable to wildfire suppression, historic periods of intensive...
Modeling waterfowl habitat selection in the Central Valley of California to better understand the spatial relationship between commercial poultry and waterfowl
Elliott Matchett, Michael L. Casazza, Joseph P. Fleskes, T. Kelman, M. Cadena, M. Pitesky
2017, Conference Paper, Proceedings of the Sixty-Sixth Western Poultry Disease Conference
Wildlife researchers frequently study resource and habitat selection of wildlife to understand their potential habitat requirements and to conserve their populations. Understanding wildlife spatial-temporal distributions related to habitat have other applications such as to model interfaces between wildlife and domestic food animals in order to mitigate disease transmission to food...
Relative contributions of copper oxide nanoparticles and dissolved copper to Cu uptake kinetics of Gulf killifish (Fundulus grandis) embryos
Chuanjia Jiang, Benjamin T. Castellon, Cole W. Matson, George R. Aiken, Heileen Hsu-Kim
2017, Environmental Science & Technology (51) 1395-1404
The toxicity of soluble metal-based nanomaterials may be due to the uptake of metals in both dissolved and nanoparticulate forms, but the relative contributions of these different forms to overall metal uptake rates under environmental conditions are not quantitatively defined. Here, we investigated the linkage between...
Status and trends in the Lake Superior fish community, 2016
Mark R. Vinson, Lori M. Evrard, Owen T. Gorman, Daniel Yule
2017, Report, Compiled reports to the Great Lakes Fishery Commission of the annual bottom trawl and acoustics surveys for 2016
In 2016, the Lake Superior fish community was sampled with daytime bottom trawls at 76 nearshore and 35 offshore stations. Spring and summer water temperatures in 2016 were warmer than average and considerably warmer than observed in 2014 and 2015. In the nearshore zone, a total of 17,449 individuals from...
Lake Ontario benthic prey fish assessment, 2016
Brian Weidel, Maureen Walsh, Jeremy P. Holden, Michael J. Connerton
2017, NYSDEC Lake Ontario Annual Report 2016-12b
Benthic prey fishes are a critical component of the Lake Ontario food web, serving as energy vectors from benthic invertebrates to native and introduced piscivores. Beginning in 1978, Lake Ontario benthic prey fishes were assessed using bottom trawls collected from the lake’s south shore (depth range: 8 – 150 m)....
Improved vertical streambed flux estimation using multiple diurnal temperature methods in series
Dylan J. Irvine, Martin A. Briggs, Ian Cartwright, Courtney R. Scruggs, Laura K. Lautz
2017, Groundwater (55) 73-80
Analytical solutions that use diurnal temperature signals to estimate vertical fluxes between groundwater and surface water based on either amplitude ratios (Ar) or phase shifts (Δϕ) produce results that rarely agree. Analytical solutions that simultaneously utilize Ar and Δϕ within a single solution have more recently been derived, decreasing uncertainty...
Geologic influence on induced seismicity: Constraints from potential field data in Oklahoma
Anjana K. Shah, G. Randy Keller
2017, Geophysical Research Letters (44) 152-161
Recent Oklahoma seismicity shows a regional correlation with increased wastewater injection activity, but local variations suggest that some areas are more likely to exhibit induced seismicity than others. We combine geophysical and drill hole data to map subsurface geologic features in the crystalline basement, where most earthquakes are occurring, and...
An integrated moral obligation model for landowner conservation norms
Amit K. Pradhananga, Mae A. Davenport, David C. Fulton, Geoffrey M. Maruyama, Dean Current
2017, Society & Natural Resources: An International Journal (30) 212-227
This study applies an integrated moral obligation model to examine the role of environmental and cultural values, and beliefs in the activation of landowner conservation norms. Data for this study were collected through a self-administered survey of riparian landowners in two Minnesota watersheds: Sand Creek and Vermillion River watersheds. Study...
Geologic map of the Bateman Spring Quadrangle, Lander County, Nevada
Alan R. Ramelli, Chester T. Wrucke, Kyle House
2017, Nevada Bureau of Mines and Geology Map 185
This 1:24,000-scale geologic map of the Bateman Spring 7.5-minute quadrangle in Lander County, Nevada contains descriptions of 24 geologic units and one cross section. Accompanying text includes full unit descriptions and references. This quadrangle includes lower Paleozoic siliciclastic sedimentary rocks of the Roberts Mountain allochthon, Miocene intrusive dikes, alluvial deposits...
The family Rhabdoviridae: Mono- and bipartite negative-sense RNA viruses with diverse genome organization and common evolutionary origins
Ralf G. Dietzgen, Hideki Kondo, Michael M. Goodin, Gael Kurath, Nikos Vasilakis
2017, Virus Research (227) 158-170
The family Rhabdoviridae consists of mostly enveloped, bullet-shaped or bacilliform viruses with a negative-sense, single-stranded RNA genome that infect vertebrates, invertebrates or plants. This ecological diversity is reflected by the diversity and complexity of their genomes. Five canonical structural protein genes are conserved in all rhabdoviruses, but may be overprinted, overlapped or...
Conservation Reserve Program mitigates grassland loss in the lesser prairie-chicken range of Kansas
David A. Haukos, David Spencer, Christian A. Hagen, Melinda D. Daniels, Doug Goodin
2017, Global Ecology and Conservation (9) 21-38
Since the beginning of the 20th century, the overall occupied range of the lesser prairie-chicken (Tympanuchus pallidicinctus) has declined by 84% commensurate with population trends. Much of this decline has been attributed to the loss and fragmentation of native grasslands throughout the lesser prairie-chicken...
Otoliths
James M. Long, Timothy B. Grabowski
Michael C. Quist, Daniel A. Isermann, editor(s)
2017, Book chapter, Age and growth of fishes: Principles and techniques
No abstract available....
Investigating impacts of oil and gas development on greater sage-grouse
Adam Green, Cameron L. Aldridge, Michael S. O’Donnell
2017, Journal of Wildlife Management (81) 46-57
The sagebrush (Artemisia spp.) ecosystem is one of the largest ecosystems in western North America providing habitat for species found nowhere else. Sagebrush habitats have experienced dramatic declines since the 1950s, mostly due to anthropogenic disturbances. The greater sage-grouse (Centrocercus urophasianus) is a sagebrush-obligate species that has experienced population declines over...
Geology and biostratigraphy of the Potomac River cliffs at Stratford Hall, Westmoreland County, Virginia
Robert E. Weems, Lucy E. Edwards, Bryan D. Landacre
2017, Book chapter, Blue Ridge to the Beach: Geological Field Excursions across Virginia
The cliffs along the Potomac River at Stratford Hall display extensive exposures of Miocene marine strata that belong successively to the Calvert, Choptank, St. Marys, and Eastover Formations. Within the lower part of this sequence, in the Calvert and Choptank Formations, there is well-developed cyclic stratigraphy. Above the Miocene units...
Fish assemblages
Daniel J. McGarvey, Jeffrey A. Falke, Hiram W. Li, Judith Li
F. Richard Hauer, G. A. Lamberti, editor(s)
2017, Book chapter, Methods in stream ecology, 3rd Edition
Methods to sample fishes in stream ecosystems and to analyze the raw data, focusing primarily on assemblage-level (all fish species combined) analyses, are presented in this chapter. We begin with guidance on sample site selection, permitting for fish collection, and information-gathering steps to be completed prior to conducting fieldwork. Basic...
Post-rift magmatic evolution of the eastern North American “passive-aggressive” margin
Sarah E. Mazza, Esteban Gazel, Elizabeth A. Johnson, Michael Bizmis, Ryan J. McAleer, C. Berk Biryol
2017, Geochemistry, Geophysics, Geosystems (18) 3-22
Understanding the evolution of passive margins requires knowledge of temporal and chemical constraints on magmatism following the transition from supercontinent to rifting, to post-rifting evolution. The Eastern North American Margin (ENAM) is an ideal study location as several magmatic pulses occurred in the 200 My following rifting. In particular, the...
Impacts of mesquite distribution on seasonal space use of lesser prairie-chickens
Matthew A. Boggie, Cody R. Strong, Daniel Lusk, Scott A. Carleton, William R. Gould, Randy L. Howard, Clay T. Nichols, Michael J. Falkowski, Christian A. Hagen
2017, Rangeland Ecology and Management (70) 68-77
Loss of native grasslands by anthropogenic disturbances has reduced availability and connectivity of habitat for many grassland species. A primary threat to contiguous grasslands is the encroachment of woody vegetation, which is spurred by disturbances that take on many forms from energy development, fire suppression, and grazing. These disturbances are...
