Novel tetra-nucleotide microsatellite DNA markers for assessing the evolutionary genetics and demographics of Northern Snakehead (Channa argus) invading North America
Tim L. King, Robin L. Johnson
2011, Conservation Genetics Resources (3) 1-4
We document the isolation and characterization of 19 tetra-nucleotide microsatellite DNA markers in northern snakehead (Channa argus) fish that recently colonized Meadow Lake, New York City, New York. These markers displayed moderate levels of allelic diversity (averaging 6.8 alleles/locus) and heterozygosity (averaging 74.2%). Demographic analyses suggested that the...
Effects of harvest and climate on population dynamics of northern bobwhites in south Florida
V. Rolland, J.A. Hostetler, T.C. Hines, Fred A. Johnson, H. Franklin Percival, M.K. Oli
2011, Wildlife Research (38) 396-407
Context: Hunting-related (hereafter harvest) mortality is assumed to be compensatory in many exploited species. However, when harvest mortality is additive, hunting can lead to population declines, especially on public land where hunting pressure can be intense. Recent studies indicate that excessive hunting may have contributed to the decline of a northern...
Notes on the geology and meteorology of sites infected with white-nose syndrome before July 2010 in Southeastern United States
Christopher S. Swezey, Christopher P. Garrity
2011, NSS News (2011) 16-25
Since 2006, numerous bat colonies in North America have experienced unusually high incidences of mortality. In these colonies, bats are infected by a white fungus named Geomyces destructans, which has been observed on bat muzzles, noses, ears, and (or) wings. Although it is not exactly certain how and why these...
Fire and the fire regime framework
Jon E. Keeley, William J. Bond, Ross A. Bradstock, Juli G. Pausas, Philip W. Rundel
2011, Book chapter, Fire in Mediterranean ecosystems: Ecology, evolution and management
A global view of potential vs. actual vegetation distributions points to fire as a major driver of biome distribution and determinant of community structure (Bond et al. 2005). In ecological terms, fire acts much like an herbivore, consuming biomass and competing with biotic consumers for resources, and in this sense...
Fire-related plant traits
Jon E. Keeley, William J. Bond, Ross A. Bradstock, Juli G. Pausas, Philip W. Rundel
2011, Book chapter, Fire in Mediterranean ecosystems: Ecology, evolution and management
As illustrated in Fig. 2.1 there are four environmental parameters that are necessary to determine the distribution of fire-prone ecosystems. However, they are insufficient to predict ecosystem responses to fire without a detailed understanding of the fire regime (see Fig. 2.7). Different fire regimes have very different potentials for recovery...
Episodic growth of a Late Cretaceous and Paleogene intrusive complex of pegmatitic leucogranite, Ruby Mountains core complex, Nevada, USA
Keith A. Howard, J. L. Wooden, C. G. Barnes, W. R. Premo, A.W. Snoke, S.-Y. Lee
2011, Geosphere (7) 1220-1248
Gneissic pegmatitic leucogranite forms a dominant component (>600 km3) of the midcrustal infrastructure of the Ruby Mountains–East Humboldt Range core complex (Nevada, USA), and was assembled and modified episodically into a batholithic volume by myriad small intrusions from ca. 92 to 29 Ma. This injection complex consists of deformed sheets...
Sea otter abundance in Kenai Fjords national Park: Results from the 2010 aerial survey
Heather A. Coletti, James L. Bodkin, George G. Esslinger
2011, Report
A sea otter aerial survey was completed in Kenai Fjords National Park (KEFJ) during June of 2010. This was the third aerial survey completed since 2002 along the Kenai Peninsula, the second specifically conducted within KEFJ. Survey methodology followed the Bodkin and Udevitz (1999) method which accounts for imperfect detection....
Applying monitoring, verification, and accounting techniques to a real-world, enhanced oil recovery operational CO2 leak
B.T. Wimmer, I.G. Krapac, R. Locke, A. Iranmanesh
2011, Energy Procedia (4) 3330-3337
The use of carbon dioxide (CO2) for enhanced oil recovery (EOR) is being tested for oil fields in the Illinois Basin, USA. While this technology has shown promise for improving oil production, it has raised some issues about the safety of...
Factors Controlling Pre-Columbian and Early Historic Maize Productivity in the American Southwest, Part 1: The Southern Colorado Plateau and Rio Grande Regions
L. V. Benson
2011, Journal of Archaeological Method and Theory (18) 1-60
Maize is the New World's preeminent grain crop and it provided the economic basis for human culture in many regions within the Americas. To flourish, maize needs water, sunlight (heat), and nutrients (e. g., nitrogen). In this paper, climate and soil chemistry data are used to evaluate the potential for...
Methane hydrate-bearing seeps as a source of aged dissolved organic carbon to the oceans
J. W. Pohlman, J.E. Bauer, W.F. Waite, C.L. Osburn, N.R. Chapman
2011, Nature Geoscience (4) 37-41
Marine sediments contain about 500-10,000 Gt of methane carbon, primarily in gas hydrate. This reservoir is comparable in size to the amount of organic carbon in land biota, terrestrial soils, the atmosphere and sea water combined, but it releases relatively little methane to the ocean and atmosphere. Sedimentary microbes convert...
Ground settlement monitoring based on temporarily coherent points between two SAR acquisitions
L. Zhang, X. Ding, Z. Lu
2011, ISPRS Journal of Photogrammetry and Remote Sensing (66) 146-152
An InSAR analysis approach for identifying and extracting the temporarily coherent points (TCP) that exist between two SAR acquisitions and for determining motions of the TCP is presented for applications such as ground settlement monitoring. TCP are identified based on the spatial characteristics of the range and azimuth offsets of...
Movement Patterns of American Shad Transported Upstream of Dams on The Roanoke River, North Carolina and Virginia
Julianne E. Harris, J.E. Hightower
2011, North American Journal of Fisheries Management (31) 240-256
American shad Alosa sapidissima are in decline throughout much of their native range as a result of overfishing, pollution, and habitat alteration in coastal rivers where they spawn. One approach to restoration in regulated rivers is to provide access to historical spawning habitat above dams through a trap-and-transport program. We examined the...
Experimental and simulation studies of iron oxides for geochemical fixation of CO2-SO2 gas mixtures
Susana Garcia, Robert J. Rosenbauer, James Palandri, M. Mercedes Maroto-Valer
2011, Energy Procedia (4) 5108-5113
Iron-bearing minerals are reactive phases of the subsurface environment and could potentially trap CO2–SO2gas mixtures derived from fossil fuel combustion processes by their conversion to siderite (FeCO3) and dissolved sulfate. Changes in fluid and mineral compositions resulting from reactions, involving the co-injection of SO2 with CO2 were observed both theoretically...
Mercury trends in fish from rivers and lakes in the United States, 1969-2005
A.T. Chalmers, D.M. Argue, D.A. Gay, M. E. Brigham, C. J. Schmitt, D. L. Lorenz
2011, Environmental Monitoring and Assessment (175) 175-191
A national dataset on concentrations of mercury in fish, compiled mainly from state and federal monitoring programs, was used to evaluate trends in mercury (Hg) in fish from US rivers and lakes. Trends were analyzed on data aggregated by site and by state, using samples of the same fish species...
Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope: Coring operations, core sedimentology, and lithostratigraphy
K. Rose, R. Boswell, Timothy S. Collett
2011, Marine and Petroleum Geology (28) 311-331
In February 2007, BP Exploration (Alaska), the U.S. Department of Energy, and the U.S. Geological Survey completed the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert well) in the Milne Point Unit on the Alaska North Slope. The program achieved its primary goals of validating the pre-drill estimates...
Modeling routes of chronic wasting disease transmission: Environmental prion persistence promotes deer population decline and extinction
Emily S. Almberg, Paul C. Cross, Christopher J. Johnson, Dennis M. Heisey, Bryan J. Richards
2011, PLoS ONE (6)
Chronic wasting disease (CWD) is a fatal disease of deer, elk, and moose transmitted through direct, animal-to-animal contact, and indirectly, via environmental contamination. Considerable attention has been paid to modeling direct transmission, but despite the fact that CWD prions can remain infectious in the environment for years, relatively little information...
CyberShake: A Physics-Based Seismic Hazard Model for Southern California
R. Graves, T.H. Jordan, S. Callaghan, E. Deelman, Edward H. Field, G. Juve, C. Kesselman, P. Maechling, G. Mehta, K. Milner, D. Okaya, P. Small, K. Vahi
2011, Pure and Applied Geophysics (168) 367-381
CyberShake, as part of the Southern California Earthquake Center’s (SCEC) Community Modeling Environment, is developing a methodology that explicitly incorporates deterministic source and wave propagation effects within seismic hazard calculations through the use of physics-based 3D ground motion simulations. To calculate a waveform-based seismic hazard estimate for a site of...
A behavior-oriented dynamic model for sandbar migration and 2DH evolution
K.D. Splinter, R.A. Holman, Nathaniel G. Plant
2011, Journal of Geophysical Research C: Oceans (116)
A nonlinear model is developed to study the time‐dependent relationship between the alongshore variability of a sandbar, a(t), and alongshore‐averaged sandbar position, xc(t). Sediment transport equations are derived from energetics‐based formulations. A link between this continuous physical representation and a parametric form describing the migration of sandbars of constant shape is established...
What's new in well logging and formation evaluation
S. Prensky
2011, World Oil (232) 85-95
A number of significant new developments is emerging in well logging and formation evaluation. Some of the new developments include an ultrasonic wireline imager, an electromagnetic free-point indicator, wired and fiber-optic coiled tubing systems, and extreme-temperature logging-while-drilling (LWD) tools. The continued consolidation of logging and petrophysical service providers in 2010...
Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four yucca moths
Christopher Irwin Smith, Shantel Tank, William Godsoe, Jim Levenick, Eva Strand, Todd C. Esque, Olle Pellmyr
2011, PLoS ONE (6)
Comparative phylogeographic studies have had mixed success in identifying common phylogeographic patterns among co-distributed organisms. Whereas some have found broadly similar patterns across a diverse array of taxa, others have found that the histories of different species are more idiosyncratic than congruent. The variation in the results of comparative phylogeographic...
Wave constraints for Titan's Jingpo Lacus and Kraken Mare from VIMS specular reflection lightcurves
J. W. Barnes, J.M. Soderblom, R. H. Brown, L.A. Soderblom, K. Stephan, R. Jaumann, Stéphane Le Mouélic, S. Rodriguez, Christophe Sotin, B. J. Buratti, K. H. Baines, R. N. Clark, P. D. Nicholson
2011, Icarus (211) 722-731
Stephan et al. (Stephan, K. et al. [2010]. Geophys. Res. Lett. 37, 7104-+.) first saw the glint of sunlight specularly reflected off of Titan's lakes. We develop a quantitative model for analyzing the photometric lightcurve generated during a flyby in which the specularly reflected light flux depends on the fraction...
Drought effect on selection of conservation reserve program grasslands by white-tailed deer on the Northern Great Plains
T.W. Grovenburg, C.N. Jacques, R. W. Klaver, J.A. Jenks
2011, American Midland Naturalist (166) 147-162
Limited information exists regarding summer resource selection of white-tailed deer (Odocoileus virginianus) in grassland regions of the Northern Great Plains. During summers 2005-2006, we analyzed habitat selection of adult female white-tailed deer in north-central South Dakota. We collected 1905 summer locations and used 21 and 30 home ranges during 2005...
Characteristics, distribution, origin, and significance of opaline silica observed by the Spirit rover in Gusev crater, Mars
S. W. Ruff, J.D. Farmer, W. M. Calvin, Kenneth E. Herkenhoff, J. R. Johnson, R.V. Morris, M.S. Rice, R. E. Arvidson, J.F. Bell III, P. R. Christensen, S. W. Squyres
2011, Journal of Geophysical Research E: Planets (116)
The presence of outcrops and soil (regolith) rich in opaline silica (∼65–92 wt % SiO2) in association with volcanic materials adjacent to the “Home Plate” feature in Gusev crater is evidence for hydrothermal conditions. The Spirit rover has supplied a diverse set of observations that are used here to better...
Effects of dams in river networks on fish assemblages in non-impoundment sections of rivers in Michigan and Wisconsin, USA
L. Wang, D. Infante, J. Lyons, J. Stewart, A. Cooper
2011, River Research and Applications (27) 473-487
Regional assessment of cumulative impacts of dams on riverine fish assemblages provides resource managers essential information for dam operation, potential dam removal, river health assessment and overall ecosystem management. Such an assessment is challenging because characteristics of fish assemblages are not only affected by dams, but also influenced by natural...
Experimental determination of the phase boundary between kornelite and pentahydrated ferric sulfate at 0.1MPa
W.G. Kong, A. Wang, I.-M. Chou
2011, Chemical Geology (284) 333-338
Recent findings of various ferric sulfates on Mars emphasize the importance of understanding the fundamental properties of ferric sulfates at temperatures relevant to that of Martian surface. In this study, the phase boundary between kornelite (Fe2(SO4)3.7H2O) and pentahydrated ferric sulfate (Fe2(SO4)3.5H2O) was experimentally determined using the humidity-buffer technique together with...
