Status of pelagic prey fishes in Lake Michigan, 2012
David M. Warner, Timothy P. O’Brien, Steven A. Farha, Randall M. Claramunt, Dale Hanson
2012, Report
Acoustic surveys were conducted in late summer/early fall during the years 1992-1996 and 2001-2012 to estimate pelagic prey fish biomass in Lake Michigan. Midwater trawling during the surveys as well as target strength provided a measure of species and size composition of the fish community for use in scaling acoustic...
Northern Fulmar (Fulmarus glacialis)
Mark L. Mallory, Scott A. Hatch, David N. Nettleship
2012, The Birds of North America
No abstract available...
Pyrite–sulfosalt reactions and semimetal fractionation in the Chinkuashih, Taiwan, copper–gold deposit: A 1 Ma paleo-fumarole
R.W. Henley, Byron R. Berger
2012, Geofluids (12) 245-260
The mineralized fracture system that underlay paleo-fumarole field at Chinkuashih, Taiwan has been exposed by copper–gold mining to depths of about 550 m below the paleo-surface. Its mineralogy and systematic variations in metal and semimetal (Fe, Cu, As, Sb, Bi, Hg, Cd, Sn, Zn, Pb, Se, Te, Au, Ag) concentrations provide...
Arsenic-induced biochemical and genotoxic effects and distribution in tissues of Sprague-Dawley rats
Anita K. Patlolla, Todor I. Todorov, Paul B. Tchounwou, Gijsbert van der Voet, Jose A. Centeno
2012, Microchemical Journal (105) 101-107
Arsenic (As) is a well documented human carcinogen. However, its mechanisms of toxic action and carcinogenic potential in animals have not been conclusive. In this research, we investigated the biochemical and genotoxic effects of As and studied its distribution in selected tissues of Sprague–Dawley rats. Four groups of six male...
Using computational modeling of river flow with remotely sensed data to infer channel bathymetry
Jonathan M. Nelson, Richard R. McDonald, Paul J. Kinzel, Y. Shimizu
2012, Conference Paper, IAHR Riverflow 2012 Conference Proceedings
As part of an ongoing investigation into the use of computational river flow and morphodynamic models for the purpose of correcting and extending remotely sensed river datasets, a simple method for inferring channel bathymetry is developed and discussed. The method is based on an inversion of the equations expressing conservation...
Environmental and medical geochemistry in urban disaster response and preparedness
Geoffrey S. Plumlee, Suzette A. Morman, A. Cook
2012, Elements (8) 451-457
History abounds with accounts of cities that were destroyed or significantly damaged by natural or anthropogenic disasters, such as volcanic eruptions, earthquakes, wildland–urban wildfires, hurricanes, tsunamis, floods, urban firestorms, terrorist attacks, and armed conflicts. Burgeoning megacities place ever more people in the way of harm from future disasters. In addition...
Mineralogy and environmental geochemistry of historical iron slag, Hopewell Furnace National Historic Site, Pennsylvania, USA
Nadine M. Piatak, Robert R. Seal
2012, Applied Geochemistry (27) 623-643
The Hopewell Furnace National Historic Site in southeastern Pennsylvania, which features an Fe smelter that was operational in the 18th and 19th centuries, is dominated by three slag piles. Pile 1 slag, from the Hopewell Furnace, and pile 2 slag, likely from the nearby Cornwall Furnace, were both produced...
A program for handling map projections of small-scale geospatial raster data
Michael P. Finn, Daniel R. Steinwand, Jason R. Trent, Robert A. Buehler, David M. Mattli, Kristina H. Yamamoto
2012, Cartographic Perspectives (71) 53-67
Scientists routinely accomplish small-scale geospatial modeling using raster datasets of global extent. Such use often requires the projection of global raster datasets onto a map or the reprojection from a given map projection associated with a dataset. The distortion characteristics of these projection transformations can have significant effects on modeling...
Genetic variation reveals influence of landscape connectivity on population dynamics and resiliency of western trout in disturbance-prone habitats
Helen M. Neville, Robert E. Gresswell, Jason B. Dunham
2012, Technical Report RMRS-GTR-290
Salmonid fishes have evolved and persisted in dynamic ecosystems where disturbance events vary in frequency, magnitude, timing, and duration, as well as the specific nature of associated effects (e.g., changes in thermal or flow regimes, geomorphology, or water chemistry). In the western United States, one of the major drivers of...
Status and trends of prey fish populations in Lake Michigan, 2012
David B. Bunnell, Charles P. Madenjian, Timothy J. Desorcie, Melissa Jean Kostich, Kelley Smith, Jean V. Adams
2012, Report
The U.S. Geological Survey Great Lakes Science Center has conducted lake-wide surveys of the fish community in Lake Michigan each fall since 1973 using standard 12-m bottom trawls towed along contour at depths of 9 to 110 m at each of seven index transects. The resulting data on relative abundance,...
Dzhezkazgan and associated sandstone copper deposits of the Chu-Sarysu basin, Central Kazakhstan
Stephen E. Box, Reimar Seltmann, Michael L. Zientek, Boris Syusyura, Robert A. Creaser, Alla Dolgopolova
2012, Book chapter, Society of Economic Geologists Special Publication
Sandstone-hosted copper (sandstone Cu) deposits occur within a 200-km reach of the northern Chu-Sarysu basin of central Kazakhstan (Dzhezkazgan and Zhaman-Aibat deposits, and the Zhilandy group of deposits). The deposits consist of Cu sulfide minerals as intergranular cement and grain replacement...
New Zealand’s deadliest quake sounds alarm for cities on fault lines
Erol Kalkan
2012, Natural Hazards Observer (36) 1-4
The catastrophic Christ Church Earthquake is a strong reminder to engineers and scientists of the hazards pose by fault lines, both mapped and unknown, near major cities. In February 2011, the relatively moderate earthquake that struck the cities of Christchurch and Lyttleton in the Canterbury region of New Zealand's South...
Sexual selection and mating chronology of Lesser Prairie-Chickens
Adam C. Behney, Blake A. Grisham, Clint W. Boal, Heather A. Whitlaw, David A. Haukos
2012, Wilson Journal of Ornithology (124) 96-105
Little is known about mate selection and lek dynamics of Lesser Prairie-Chickens (Tympanuchus pallidicinctus). We collected data on male territory size and location on leks, behavior, and morphological characteristics and assessed the importance of these variables on male Lesser Prairie-Chicken mating success during spring 2008 and 2009 in the Texas...
The crustal magma storage system of Volcán Quizapu, Chile, and the effects of magma mixing on magma diversity
George W. Bergantz, Kari M. Cooper, Edward Hildreth, Phillipp Ruprecht
2012, Journal of Petrology (53) 801-840
Crystal zoning as well as temperature and pressure estimates from phenocryst phase equilibria are used to constrain the architecture of the intermediate-sized magmatic system (some tens of km3) of Volcán Quizapu, Chile, and to document the textural and compositional effects of magma mixing. In contrast to most arc magma systems,...
Distributional changes of American martens and fishers in eastern North America, 1699-2001: Chapter 4
William B. Krohn
2012, Book chapter, Biology and Conservation of Martens, Sables, and Fishers: A New Synthesis
Contractions in the geographic distributions of the American marten ( Martes americana) and fi sher ( M. pennanti) in eastern North America south of the St. Lawrence River between Colonial times (ca. 1650–1800) and the fi sher’s recent range expansion (ca. 1930–present) are well documented, but causal factors in these...
Concurrent speciation in the eastern woodland salamanders (Genus Plethodon):DNA sequences of the complete albumin nuclear and partialmitochondrial 12s genes
Richard Highton, Amy Picard Hastings, Catherine Palmer, Richard Watts, Carla A. Hass, Melanie Culver, Stevan Arnold
2012, Molecular Phylogenetics and Evolution (63) 278-290
Salamanders of the North American plethodontid genus Plethodon are important model organisms in a variety of studies that depend on a phylogenetic framework (e.g., chemical communication, ecological competition, life histories, hybridization, and speciation), and consequently their systematics has been intensively investigated over several decades. Nevertheless, we lack a synthesis of...
Digital elevation model generation from satellite interferometric synthetic aperture radar: Chapter 5
Zhong Lu, Daniel Dzurisin, Hyung-Sup Jung, Lei Zhang, Wonjin Lee, Chang-Wook Lee
2012, Book chapter, Advances in mapping from remote sensor imagery
An accurate digital elevation model (DEM) is a critical data set for characterizing the natural landscape, monitoring natural hazards, and georeferencing satellite imagery. The ideal interferometric synthetic aperture radar (InSAR) configuration for DEM production is a single-pass two-antenna system. Repeat-pass single-antenna satellite InSAR imagery, however, also can be used to...
Basin thickness variations at the Junction of the Eastern California Shear Zone and the San Bernardino Mountains, California: How thick could the Pliocene sections be?
Victoria E. Langenheim, Tammy L. Surko, Phillip A. Armstrong, Jonathan C. Matti
2012, Conference Paper, Searching for the Pliocene: southern exposures, Annual Desert Symposium Proceedings
We estimate the thickness of Neogene basin fill along the junction of the Eastern California Shear Zone and the North Frontal thrust system of the San Bernardino Mountains using gravity data with geologic and well log constraints. The geometry of the basin fill is of interest for groundwater assessment and location of potential...
A Bayesian method to rank different model forecasts of the same volcanic ash cloud: Chapter 24
Roger P. Denlinger, P. Webley, Larry G. Mastin, Hans F. Schwaiger
2012, Book chapter, Lagrangian Modeling of the Atmosphere
Volcanic eruptions often spew fine ash high into the atmosphere, where it is carried downwind, forming long ash clouds that disrupt air traffic and pose a hazard to air travel. To mitigate such hazards, the community studying ash hazards must assess risk of ash ingestion for any flight path and...
Observed source parameters for dynamic rupture with non-uniform initial stressand relatively high fracture energy
Nicholas M. Beeler, Brian D. Kilgore, Arthur F. McGarr, Jon Peter B. Fletcher, John R. Evans, Steven R. Baker
2012, Journal of Structural Geology (38) 77-89
We have conducted dynamic rupture propagation experiments to establish the relations between in-source stress drop, fracture energy and the resulting particle velocity during slip of an unconfined 2 m long laboratory fault at normal stresses between 4 and 8 MPa. To produce high fracture energy in the source we use a...
Provisioning of nestling Dickcissels in native warm-season grass field buffers
K. L. Mitchell, Samuel K. Riffell, L. Wes Burger Jr., Francisco Vilella
2012, Wilson Journal of Ornithology (124) 298-309
We used video cameras in 2008–2009 to record provisioning activities at Dickcissel (Spiza americana) nests in and around Conservation Reserve Program field buffers in north-central Mississippi, USA. We simultaneously observed foraging flight distances of parents. Provisioning rate (P = 0.412), biomass (P = 0.161), and foraging distance (P = 0.159)...
Productivity and sedimentary δ15N variability for the last 17,000 years along the northern Gulf of Alaska continental slope
Jason A. Addison, Bruce P. Finney, Walter E. Dean, Maureen H. Davies, Alan C. Mix, John M. Jaeger
2012, Paleoceanography (27)
Biogenic opal, organic carbon, organic matter stable isotope, and trace metal data from a well-dated, high-resolution jumbo piston core (EW0408–85JC; 59° 33.3′N, 144° 9.21′W, 682 m water depth) recovered from the northern Gulf of Alaska continental slope reveal changes in productivity and nutrient utilization over the last 17,000 years. Maximum...
Aftershocks halted by static stress shadows
Shinji Toda, Ross S. Stein, Gregory C. Beroza, David Marsan
2012, Nature Geoscience (5) 410-413
Earthquakes impart static and dynamic stress changes to the surrounding crust. Sudden fault slip causes small but permanent—static—stress changes, and passing seismic waves cause large, but brief and oscillatory—dynamic—stress changes. Because both static and dynamic stresses can trigger earthquakes within several rupture dimensions of a mainshock, it has proven difficult...
Telemetry techniques: A user guide for fisheries research
Noah Adams, John W. Beeman, John H. Eiler, editor(s)
2012, Book
Telemetry provides a powerful and flexible tool for studying fish and other aquatic animals, and its use has become increasingly commonplace. However, telemetry is gear intensive and typically requires more specialized knowledge and training than many other field techniques. As with other scientific methods, collecting good data is dependent on...
Stochastic analyses to identify wellfield withdrawal effects on surface-water and groundwater in Miami-Dade County, Florida
Eric Swain
2012, Journal of Environmental Management (113) 15-21
Several stochastic analyses were conducted in Miami-Dade County, Florida, to evaluate the effects of wellfield withdrawal on aquifer water levels, canal stage, and canal flow. Multiyear data for withdrawals at four water-supply wellfields, water levels at the S-121 canal control structure and groundwater head at a nearby monitoring well were used to determine...
