Understanding how lake populations of arctic char are structured and function with special consideration of the potential effects of climate change: A multi-faceted approach.
Phaedra E. Budy, Chris Luecke
2014, Oecologia (176) 81-94
Size dimorphism in fish populations, both its causes and consequences, has been an area of considerable focus; however, uncertainty remains whether size dimorphism is dynamic or stabilizing and about the role of exogenous factors. Here, we explored patterns among empirical vital rates, population structure, abundance and trend, and predicted the...
Paleoclimate
Patrick J. Bartlein, Steven W. Hostetler, Jay R. Alder
G. Ohring, editor(s)
2014, Book chapter, Climate Change in North America
As host to one of the major continental-scale ice sheets, and with considerable spatial variability of climate related to its physiography and location, North America has experienced a wide range of climates over time. The aim of this chapter is to review the history of those climate variations, focusing in...
Lesser Yellowlegs (Tringa flavipes)
T. Lee Tibbitts, William Moskoff
2014, The Birds of North America
No abstract available...
Is white-nose syndrome causing insectivory release and altering ecosystem function in the eastern US?
W. Mark Ford, David S. Jachowski, Cahterine M.B. Jachowski
2014, Bat Research News (55) 21-24
No abstract available....
Seismic monitoring at the Decatur, Ill., CO2 sequestration demonstration site
J. Ole Kaven, Stephen H. Hickman, Arthur F. McGarr, Steve R. Walter, William L. Ellsworth
2014, Conference Paper, Energy Procedia
The viability of carbon capture and storage (CCS) to reduce emissions of greenhouse gases depends on the ability to safely sequester large quantities of CO2 over geologic time scales. One concern with CCS is the potential of induced seismicity. We report on ongoing seismic monitoring by the U.S. Geological Survey...
Using dissolved organic matter age and composition to detect permafrost thaw in boreal watersheds of interior Alaska
Jonathan A. O’Donnell, George R. Aiken, Michelle Ann Walvoord, Peter A. Raymond, Kenna D. Butler, Mark M. Dornblaser, Katherine Heckman
2014, Journal of Geophysical Research: Biogeosciences (119) 2155-2170
Recent warming at high latitudes has accelerated permafrost thaw, which can modify soil carbon dynamics and watershed hydrology. The flux and composition of dissolved organic matter (DOM) from soils to rivers are sensitive to permafrost configuration and its impact on subsurface hydrology and groundwater discharge. Here, we evaluate the utility...
Micro-seismicity and seismic moment release within the Coso Geothermal Field, California
J. Ole Kaven, Stephen H. Hickman, Nicholas C. Davatzes
2014, Conference Paper, Proceedings, Thirty-Ninth Workshop on Geothermal Reservoir Engineering
We relocate 16 years of seismicity in the Coso Geothermal Field (CGF) using differential travel times and simultaneously invert for seismic velocities to improve our knowledge of the subsurface geologic and hydrologic structure. We expand on our previous results by doubling the number of relocated events from April 1996 through...
Instream habitat restoration and stream temperature reduction in a whirling disease-positive Spring Creek in the Blackfoot River Basin, Montana
Ron Pierce, Craig Podner, Laurie B Marczak, Leslie A. Jones
2014, Transactions of the American Fisheries Society (143) 1188-1198
Anthropogenic warming of stream temperature and the presence of exotic diseases such as whirling disease are both contemporary threats to coldwater salmonids across western North America. We examined stream temperature reduction over a 15-year prerestoration and postrestoration period and the severity of Myxobolus cerebralisinfection (agent of whirling disease) over a 7-year...
Introduction: Hazard mapping
Rex L. Baum, Toyohiko Miyagi, Saro Lee, Oleksandr M Trofymchuk
2014, Book chapter, Landslide science for a safer geoenvironment
Twenty papers were accepted into the session on landslide hazard mapping for oral presentation. The papers presented susceptibility and hazard analysis based on approaches ranging from field-based assessments to statistically based models to assessments that combined hydromechanical and probabilistic components. Many of the studies have taken advantage of increasing availability...
Optimally managing water resources in large river basins for an uncertain future
Jr. Edwin A. Roehl, Paul Conrads
2014, Book
Managers of large river basins face conflicting needs for water resources such as wildlife habitat, water supply, wastewater assimilative capacity, flood control, hydroelectricity, and recreation. The Savannah River Basin for example, has experienced three major droughts since 2000 that resulted in record low water levels in its reservoirs, impacting local...
Chemical mixtures in potable water in the U.S.
Sarah J. Ryker
2014, Book chapter, Comprehensive water quality and purification
In recent years, regulators have devoted increasing attention to health risks from exposure to multiple chemicals. In 1996, the US Congress directed the US Environmental Protection Agency (EPA) to study mixtures of chemicals in drinking water, with a particular focus on potential interactions affecting chemicals' joint toxicity. The task is...
Reanalysis of historical U.S. Geological Survey sediment samples for geochemical data from the western part of the Wrangellia terrane, Anchorage, Gulkana, Healy, Mt. Hayes, Nabesna, and Talkeetna Mountains quadrangles, Alaska
Melanie B. Werdon, Jaime S. Azain, Matthew Granitto
2014, Report
The State of Alaska’s Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska’s statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and...
The environmental and medical geochemistry of potentially hazardous materials produced by disasters
Geoffrey S. Plumlee, Suzette A. Morman, G.P. Meeker, Todd M. Hoefen, Philip L. Hageman, Ruth E. Wolf
2014, Book chapter, Treatise on Geochemistry
Many natural or human-caused disasters release potentially hazardous materials (HM) that may pose threats to the environment and health of exposed humans, wildlife, and livestock. This chapter summarizes the environmentally and toxicologically significant physical, mineralogical, and geochemical characteristics of materials produced by a wide variety of recent disasters, such as...
Comparison of fishes in nearshore areas of the St. Lawrence River, New York over 35 years
Douglas M. Carlson, James E. McKenna Jr.
2014, NYSDEC Lake Ontario Annual Report 2013-21
Fishes of the nearshore waters of the St. Lawrence River provide forage for valuable sport fisheries and are important biological indicators of condition and change. This fish community differs slightly among various reaches of the St. Lawrence River from New York to Quebec (Carlson et al. 2006, Eckert and Hanlon...
Effects of urbanization on mercury deposition and accumulation in New England
Ann T. Chalmers, David P. Krabbenhoft, Peter C. Van Metre, Mark A. Nilles
2014, Environmental Pollution (192) 104-112
We compare total mercury (HgT) loading and methylmercury (MeHg) accumulation in streams and lakes from an urbanized area (Boston, Massachusetts) to rural regions of southern New Hampshire and Maine. The maximum HgT loading, as indicated by HgT atmospheric deposition, HgT emissions, and sediment HgT concentrations, did not coincide with maximum MeHg concentrations in...
Volcanoes of the passive margin: The youngest magmatic event in eastern North America
Sarah E Mazza, Esteban Gazel, Elizabeth A Johnson, Michael J. Kunk, Ryan J. McAleer, James A Spotila, Michael Bizimis, Drew S Coleman
2014, Geology (42) 483-486
The rifted eastern North American margin (ENAM) provides important clues to the long-term evolution of continental margins. An Eocene volcanic swarm exposed in the Appalachian Valley and Ridge Province of Virginia and West Virginia (USA) contains the youngest known igneous rocks in the ENAM. These magmas provide the only window...
Lateritic, supergene rare earth element (REE) deposits
Mark D. Cocker
2014, Conference Paper, Arizona Geological Survey Special Paper 9
Intensive lateritic weathering of bedrock under tropical or sub-tropical climatic conditions can form a variety of secondary, supergene-type deposits. These secondary deposits may range in composition from aluminous bauxites to iron and niobium, and include rare earth elements (REE). Over 250 lateritic deposits of REE are currently known and many...
Preslip and cascade processes initiating laboratory stick slip
Gregory C. McLaskey, David A. Lockner
2014, Journal of Geophysical Research B: Solid Earth (119) 6323-6336
Recent modeling studies have explored whether earthquakes begin with a large aseismic nucleation process or initiate dynamically from the rapid growth of a smaller instability in a “cascade-up” process. To explore such a case in the laboratory, we study the initiation of dynamic rupture (stick slip) of a smooth saw-cut...
Characterization of microsatellite loci from two-spotted octopus Octopus bimaculatus Verrill 1883 from pyrosequencing reads
J. F. Dominguez-Contreras, A. Munguía-Vega, B. P. Ceballos-Vazquez, M. Arellano-Martinez, Melanie Culver
2014, Conservation Genetics Resources (6) 465-468
We characterized 22 novel microsatellite loci in the two-spotted octopus Octopus bimaculatus using 454 pyrosequencing reads. All loci were polymorphic and will be used in studies of marine connectivity aimed at increasing sustainability of the resource. The mean number alleles per locus was 13.09 (range 7–19) and observed heterozygosities ranged...
Concealed basalt-matrix diatremes with Cu-Au-Ag-(Mo)-mineralized xenoliths, Santa Cruz Porphyry Cu-(Mo) System, Pinal County, Arizona
Peter G. Vikre, Frederick Graybeal, Fleetwood R. Koutz
2014, Economic Geology (109) 1271-1289
The Santa Cruz porphyry Cu-(Mo) system near Casa Grande, Arizona, includes the Sacaton mine deposits and at least five other concealed, mineralized fault blocks with an estimated minimum resource of 1.5 Gt @ 0.6% Cu. The Late Cretaceous-Paleocene system has been dismembered and rotated by Tertiary extension, partially eroded, and...
Auroral omens of the American Civil War
Jeffrey J. Love
2014, Weatherwise (67) 34-41
Aurorae are a splendid night-time sight: coruscations of green, purple, and red fluorescent light in the form of gently wafting ribbons, billowing curtains, and flashing rays. Mostly seen at high latitudes, in the north aurorae are often called the northern lights or aurora borealis, and, in the south, the southern...
Multisystem dating of modern river detritus from Tajikistan and China: Implications for crustal evolution and exhumation of the Pamir
Barbara Carappa, F.S. Mustapha, Michael A. Cosca, George E. Gehrels, L Schoenbhohm, E. Sobel, DeCelles.P., Joellen Russell, Paul Goodman
2014, Lithosphere (6) 443-455
The Pamir is the western continuation of Tibet and the site of some of the highest mountains on Earth, yet comparatively little is known about its crustal and tectonic evolution and erosional history. Both Tibet and the Pamir are characterized by similar terranes and sutures that can be correlated along...
Quaternary geology of the Boston area: Glacial events from Lake Charles to Lake Aberjona
Byron D. Stone, John W. Lane Jr.
2014, Book chapter, 2014 Guidebook for Field Trips in Southeastern New England
The multiple-glacial and glaciomarine Quaternary history of the Boston, Massachusetts area has been known generally since the earliest studies of the then newly recognized glacial deposits described by Prof. Louis Agassiz in the late1840’s and fossil marine shells in the drift in the 1850’s. Attention then turned to possible glacial...
UCODE_2014, with new capabilities to define parameters unique to predictions, calculate w eights using simulated values, estimate parameters w ith SVD, evaluate uncertainty with MCMC, and more
Eileen P. Poeter, Mary C. Hill, Dan Lu, Claire R. Tiedeman, Steffen W. Mehl
2014, Report
A multiple-tracer approach to understanding regional groundwaterflow in the Snake Valley area of the eastern Great Basin, USA
Philip M. Gardner
2014, Applied Geochemistry (45) 33-49
Groundwater in Snake Valley and surrounding basins in the eastern Great Basin province of the western United States is being targeted for large-scale groundwater extraction and export. Concern about declining groundwater levels and spring flows in western Utah as a result of the proposed groundwater withdrawals has led to efforts that have improved...
