The relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis)
Erik S Jules, Jenell I. Jackson, Phillip J. van Mantgem, Jennifer S. Beck, Michael P. Murray, E. April Sahara
2016, Forest Ecology and Management (381) 144-156
Pathogens and insect pests have become increasingly important drivers of tree mortality in forested ecosystems. Unfortunately, understanding the relative contributions of multiple mortality agents to the population decline of trees is difficult, because it requires frequent measures of tree survival, growth, and recruitment, as well as the incidence of mortality...
Indications of a positive feedback between coastal development and beach nourishment
Scott Armstrong, Eli D. Lazarus, Patrick W. Limber, Evan B. Goldstein, Curtis Thorpe, Rhoda Ballinger
2016, Earth's Future (4) 626-635
Beach nourishment, a method for mitigating coastal storm damage or chronic erosion by deliberately replacing sand on an eroded beach, has been the leading form of coastal protection in the U.S. for four decades. However, investment in hazard protection can have the unintended consequence of encouraging development in places especially...
Occurrence and effects of endocrine-disrupting chemicals in the St. Croix River
Sarah M. Elliott, Kathy Lee
2016, Report
The St. Croix River is one of the last undisturbed, large floodplain rivers in the upper Mississippi River System. The Saint Croix National Scenic Riverway encompasses 255 river miles from the St. Croix Flowage and Namekagon River to the confluence of the St. Croix River with the Mississippi River at...
Reinforcement and validation of the analyses and conclusions related to fishway evaluation data from Bunt et al.: ‘Performance of fish passage structures at upstream barriers to migration’
C.M. Bunt, Theodore R. Castro-Santos, Alexander Haro
2016, River Research and Applications (32) 2125-2137
Detailed re-examination of the datasets that were used for a meta-analysis of fishway attraction and passage revealed a number of errors that we addressed and corrected. We subsequently re-analysed the revised dataset, and results showed no significant changes in the primary conclusions of the original study; for most species, effective...
Semiautomatic mapping of permafrost in the Yukon Flats, Alaska
Mats Lundh Gulbrandsen, Burke J. Minsley, Lyndsay B. Ball, Thomas Mejer Hansen
2016, Geophysical Research Letters (43) 12131-12137
Thawing of permafrost due to global warming can have major impacts on hydrogeological processes, climate feedback, arctic ecology, and local environments. To understand these effects and processes, it is crucial to know the distribution of permafrost. In this study we exploit the fact that airborne electromagnetic (AEM) data are sensitive...
Timing of spring wild turkey hunting in relation to nest incubation
Mary Jo Casalena, Rex Everett, Wendy C. Vreeland, Ian D. Gregg, Duane R. Diefenbach
2016, Conference Paper, Proceedings of the National Wild Turkey Symposium
State wildlife agencies are often requested to open spring wild turkey (Meleagris gallopavo; hereafter, turkey) hunting seasons earlier to increase hunter satisfaction by hunters hearing more gobbling male turkeys. Timing of spring turkey hunting season in several states, including Pennsylvania, has been established to open, on average, near median date...
Occurrence of triclocarban and triclosan in an agro-ecosystem following application of biosolids
Jessica J. Sherburne, Amanda M. Anaya, Kimberly J. Fernie, Jennifer S. Forbey, Edward T. Furlong, Dana W. Kolpin, Alfred M. Dufty, Chad A. Kinney
2016, Environmental Science & Technology (50) 13206-13214
Triclocarban (TCC) and triclosan (TCS), two of the most commonly used antimicrobial compounds, can be introduced into ecosystems by applying wastewater treatment plant biosolids to agricultural fields. Concentrations of TCC and TCS were measured in different trophic levels within a terrestrial food web encompassing land-applied biosolids, soil, earthworms (Lumbricus), deer...
The Chuar Petroleum System, Arizona and Utah
Paul G. Lillis
2016, Book chapter, Hydrocarbon source rocks in unconventional plays, Rocky Mountain Region
The Neoproterozoic Chuar Group consists of marine mudstone, sandstone and dolomitic strata divided into the Galeros and Kwagunt Formations, and is exposed only in the eastern Grand Canyon, Arizona. Research by the U.S. Geological Survey (USGS) in the late 1980s identified strata within the group to be possible petroleum source...
Application of ground penetrating radar for identification of washover deposits and other stratigraphic features: Assateague Island, MD
Nicholas Zaremba, Christopher G. Smith, Julie Bernier, Arnell S. Forde
2016, Journal of Environmental & Engineering Geophysics (21) 173-186
A combination of ground penetrating radar (GPR) data, core data, and aerial photographs were analyzed to better understand the evolution of two portions of Assateague Island, Maryland. The focus of the study was to investigate the applicability of using GPR data to image washover deposits in the stratigraphic record. High...
Historical reconstructions of California wildfires vary by data source
Alexandra D. Syphard, Jon E. Keeley
2016, International Journal of Wildland Fire (25) 1221-1227
Historical data are essential for understanding how fire activity responds to different drivers. It is important that the source of data is commensurate with the spatial and temporal scale of the question addressed, but fire history databases are derived from different sources with different restrictions. In California, a frequently used...
Susceptibility of ocean- and stream-type Chinook salmon to isolates of the L, U, and M genogroups of infectious hematopoietic necrosis virus (IHNV)
Daniel Hernandez, Maureen K. Purcell, Carolyn S. Friedman, Gael Kurath
2016, Diseases of Aquatic Organisms (121) 15-28
This study examined the susceptibility of Chinook salmon Oncorhynchus tshawytscha to viral strains from the L, U, and M genogroups of infectious hematopoietic necrosis virus (IHNV) present in western North America. The goal of this investigation was to establish a baseline understanding of the susceptibility of ocean- and stream-type Chinook...
Dog days of summer: Influences on decision of wolves to move pups
David E. Ausband, Michael S. Mitchell, Sarah B. Bassing, Matthew Nordhagen, Douglas W. Smith, Daniel R. Stahler
2016, Journal of Mammalogy (97) 1282-1287
For animals that forage widely, protecting young from predation can span relatively long time periods due to the inability of young to travel with and be protected by their parents. Moving relatively immobile young to improve access to important resources, limit detection of concentrated scent by predators, and decrease infestations...
Evolution of the Lower Tertiary Elko Lake Basin, a potential hydrocarbon source rock in Northeast Nevada
Ronald C. Johnson, Justin E. Birdwell
Michael P. Dolan, Debra K. Higley, Paul G. Lillis, editor(s)
2016, Book chapter, Hydrocarbon Source Rocks in Unconventional Plays, Rocky Mountain Region
No abstract available....
Adult nest attendance and diet of nestling Resplendent Quetzals (Pharomachrus mocinno) in the Talamanca Mountains of southern Cosa Rica
Scott A. Carleton
2016, Ornitologia Neotropical (27) 181-188
Resplendent Quetzals (Pharomachrus mocinno) inhabit mid to high elevation forests from southern Mexico to Panama. Lipid rich fruits from the Lauraceae family have been found to account for a large proportion of adult diet across their annual life cycle. To better understand the relationship between quetzals and Lauraceae during the...
Iron and oxygen isotope signatures of the Pea Ridge and Pilot Knob magnetite-apatite deposits, southeast Missouri, USA
Tristan Childress, Adam C. Simon, Warren C. Day, Craig C. Lundstrom, Ilya N. Bindeman
2016, Economic Geology (111) 2033-2044
New O and Fe stable isotope ratios are reported for magnetite samples from high-grade massive magnetite of the Mesoproterozoic Pea Ridge and Pilot Knob magnetite-apatite ore deposits and these results are compared with data for other iron oxide-apatite deposits to shed light on the origin of the southeast Missouri deposits....
Controls on the geochemical evolution of Prairie Pothole Region lakes and wetlands over decadal time scales
Martin B. Goldhaber, Christopher T. Mills, David M. Mushet, R. Blaine McCleskey, Jennifer Rover
2016, Wetlands (36) 255-272
One hundred sixty-seven Prairie Pothole lakes, ponds and wetlands (largely lakes) previously analyzed chemically during the late 1960’s and early to mid-1970’s were resampled and reanalyzed in 2011–2012. The two sampling periods differed climatically. The earlier sampling took place during normal to slightly dry conditions, whereas the latter occurred during...
A biographical memoir of Donald Edward White
L.J. Patrick Muffler
2016, Article
Donald E. White was a leading scientist for the U.S. Geological Survey, where his career was devoted almost entirely to the study of hydrothermal processes in the Earth’s crust, from the dual perspectives of active geothermal systems and of extinct hydrothermal systems now represented only by ore deposits and alteration...
Trace elements at the intersection of marine biological and geochemical evolution
Leslie J. Robbins, Stefan V. Lalonde, Noah J. Planavsky, Camille A. Partin, Christopher T. Reinhard, Brian Kendall, Clint Scott, Dalton S. Hardisty, Benjamin C. Gill, Daniel S. Alessi, Christopher L. Dupont, Mak A. Saito, Sean A. Crowe, Simon W. Poulton, Andrey Bekker, Timothy W. Lyons, Kurt O. Konhauser
2016, Earth-Science Reviews (163) 323-348
Life requires a wide variety of bioessential trace elements to act as structural components and reactive centers in metalloenzymes. These requirements differ between organisms and have evolved over geological time, likely guided in some part by environmental conditions. Until recently, most of what was understood regarding trace element concentrations in...
Increased prevalence of antibiotic-resistant E. coli in gulls sampled in southcentral Alaska is associated with urban environments
Clara Atterby, Andrew M. Ramey, Gabriel Gustafsson Hall, Josef Jarhult, Stefan Borjesson, Jonas Bonnedahl
2016, Infection Ecology and Epidemiology (6) 1-7
BackgroundAntibiotic-resistant bacteria pose challenges to healthcare delivery systems globally; however, limited information is available regarding the prevalence and spread of such bacteria in the environment. The aim of this study was to compare the prevalence of antibiotic-resistant bacteria in large-bodied gulls (Larus spp.) at urban...
Survival and metamorphosis of larval sea lamprey (Petromyzon marinus) residing in Lakes Michigan and Huron near river mouths
Nicholas S. Johnson, Travis O. Brenden, William D. Swink, Mathew A. Lipps
2016, Journal of Great Lakes Research (42) 1461-1469
Although population demographics of larval lampreys in streams have been studied extensively, demographics in lake environments have not. Here, we estimated survival and rates of metamorphosis for larval sea lamprey (Petromyzon marinus) populations residing in the Great Lakes near river mouths (hereafter termed lentic areas). Tagged larvae were stocked and...
Complete genome sequence of a novel aquareovirus that infects the endangered fountain darter, Etheostoma fonticola
Luke R. Iwanowicz, Deborah D. Iwanowicz, Cynthia R. Adams, Teresa D. Lewis, Thomas M. Brandt, Robert S. Cornman, Lakyn R. Sanders
2016, Genome Announcements (4)
Here, we report the complete genome of a novel aquareovirus isolated from clinically normal fountain darters, Etheostoma fonticola, inhabiting the San Marcos River, Texas, USA. The complete genome consists of 23,958 bp consisting of 11 segments that range from 783 bp (S11) to 3,866 bp (S1)....
New organic reference materials for hydrogen, carbon, and nitrogen stable isotope-ratio measurements: caffeines, n-alkanes, fatty acid methyl esters, glycines, L-valines, polyethylenes, and oils
Arndt Schimmelmann, Haiping Qi, Tyler B. Coplen, Willi A. Brand, Jon Fong, Wolfram Meier-Augenstein, Helen F. Kemp, Blaza Toman, Annika Ackermann, Sergey Assonov, Anita Aerts-Bijma, Ramona Brejcha, Yoshito Chikaraishi, Tamim Darwish, Martin Elsner, Matthias Gehre, Heike Geilmann, Manfred Groning, Jean-Francois Helie, Sara Herrero-Martin, Harro A.J. Meijer, Peter E. Sauer, Alex L. Sessions, Roland A. Werner
2016, Analytical Chemistry (88) 4294-4302
An international project developed, quality-tested, and determined isotope−δ values of 19 new organic reference materials (RMs) for hydrogen, carbon, and nitrogen stable isotope-ratio measurements, in addition to analyzing pre-existing RMs NBS 22 (oil), IAEA-CH-7 (polyethylene foil), and IAEA-600 (caffeine). These new RMs enable users to normalize measurements of samples to...
White-tailed deer (Odocoileus virginianus) subsidize gray wolves (Canis lupus) during a moose (Alces americanus) decline: A case of apparent competition?
Shannon Barber-Meyer, L. David Mech
2016, Canadian Field-Naturalist (130) 308-314
Moose (Alces americanus) in northeastern Minnesota have declined by 55% since 2006. Although the cause is unresolved, some studies have suggested that Gray Wolves (Canis lupus) contributed to the decline. After the Moose decline, wolves could either decline or switch prey. To determine which occurred in our study area, we...
Occurrence and concentrations of selected trace elements, halogenated organic compounds, and polycyclic aromatic hydrocarbons in streambed sediments and results of water-toxicity testing in Westside Creeks and the San Antonio River, San Antonio, Texas, 2014
Cassi L. Crow, Jennifer T. Wilson, James L. Kunz
2016, Scientific Investigations Report 2016-5136
Sediment samples and samples for water-toxicity testing were collected during 2014 from several streams in San Antonio, Texas, known locally as the Westside Creeks (Alazán, Apache, Martínez, and San Pedro Creeks) and from the San Antonio River. Samples were collected during base flow and after periods of stormwater runoff (poststorm...
Comparison of survey techniques on detection of northern flying squirrels
Corinne A. Diggins, L. Michelle Gilley, Christine A. Kelly, W. Mark Ford
2016, Wildlife Society Bulletin (40) 654-662
The ability to detect a species is central to the success of monitoring for conservation and management purposes, especially if the species is rare or endangered. Traditional methods, such as live capture, can be labor-intensive, invasive, and produce low detection rates. Technological advances and new approaches provide opportunities to more...
