Toward an understanding of disequilibrium dihedral angles in mafic rocks
Marian B. Holness, Madeleine C.S. Humphreys, Rachel Sides, Rosalind T. Helz, Christian Tegner
2012, Journal of Geophysical Research (117)
The median dihedral angle at clinopyroxene-plagioclase-plagioclase junctions in mafic rocks, Θcpp, is generally lower than equilibrium (109˚ {plus minus} 2˚). Observation of a wide range of mafic bodies demonstrates that previous work on systematic variations of Θcpp is incorrect in several important respects. Firstly, the spatial distribution of plagioclase compositional...
SIRT1 attenuates palmitate-induced endoplasmic reticulum stress and insulin resistance in HepG2 cells via induction of oxygen-regulated protein 150
T.W. Jung, K.T. Lee, Myung W. Lee, K.H. Ka
2012, Biochemical and Biophysical Research Communications (422) 229-232
Endoplasmic reticulum (ER) stress has been implicated in the pathology of type 2 diabetes mellitus (T2DM). Although SIRT1 has a therapeutic effect on T2DM, the mechanisms by which SIRT1 ameliorates insulin resistance (IR) remain unclear. In this study, we investigated the impact of SIRT1 on palmitate-induced ER stress in HepG2...
Comparison of stream invertebrate response models for bioassessment metric
Ian R. Waite, Jonathan G. Kennen, Jason T. May, Larry R. Brown, Thomas F. Cuffney, Kimberly A. Jones, James L. Orlando
2012, Journal of the American Water Resources Association (48) 570-583
We aggregated invertebrate data from various sources to assemble data for modeling in two ecoregions in Oregon and one in California. Our goal was to compare the performance of models developed using multiple linear regression (MLR) techniques with models developed using three relatively new techniques: classification and regression trees (CART),...
Uncertainty
Randall J. Hunt
2012, Book chapter, Australian groundwater modelling guidelines
Management decisions will often be directly informed by model predictions. However, we now know there can be no expectation of a single ‘true’ model; thus, model results are uncertain. Understandable reporting of underlying uncertainty provides necessary context to decision-makers, as model results are used for management decisions. This, in turn,...
Probabilistic estimates of surface coseismic slip and afterslip for Hayward fault earthquakes
Brad T. Aagaard, James J. Lienkaemper, David P. Schwartz
2012, Bulletin of the Seismological Society of America (102) 961-979
We examine the partition of long‐term geologic slip on the Hayward fault into interseismic creep, coseismic slip, and afterslip. Using Monte Carlo simulations, we compute expected coseismic slip and afterslip at three alinement array sites for Hayward fault earthquakes with nominal moment magnitudes ranging from about 6.5 to 7.1. We...
Spatial aspects of building and population exposure data and their implications for global earthquake exposure modeling
F. Dell’Acqua, P. Gamba, K. Jaiswal
2012, Natural Hazards
This paper discusses spatial aspects of the global exposure dataset and mapping needs for earthquake risk assessment. We discuss this in the context of development of a Global Exposure Database for the Global Earthquake Model (GED4GEM), which requires compilation of a multi-scale inventory of assets at risk, for example, buildings,...
Novel microsatellite loci for studies of Thamnophis Gartersnake genetic identity and hybridization
Brian L. Sloss, Gregor W. Schuurman, Rori A. Paloski, Owen D. Boyle, Joshua M. Kapfer
2012, Conservation Genetics Resources (4) 383-386
Butler’s Gartersnakes (BGS; Thamnophis butleri) are confined to open and semi-open canopy wetlands and adjacent uplands, habitats under threat of development in Wisconsin. To address issues of species identity and putative hybridization with congeneric snakes, a suite of 18 microsatellite loci capable of cross-species amplification of Plains Gartersnakes...
Estimations of evapotranspiration and water balance with uncertainty over the Yukon River Basin
Wenping Yuan, Shuguang Liu, Shunlin Liang, Zhengxi Tan, Heping Liu, Claudia Young
2012, Water Resources Management (26) 2147-2157
In this study, the revised Remote Sensing-Penman Monteith model (RS-PM) was used to scale up evapotranspiration (ET) over the entire Yukon River Basin (YRB) from three eddy covariance (EC) towers covering major vegetation types. We determined model parameters and uncertainty using a Bayesian-based method in the three EC sites. The...
Reconstruction of past methane availability in an Arctic Alaska wetland indicates climate influenced methane release during the past ~12,000 years
Matthew J. Wooller, John W. Pohlman, Benjamin V. Gaglioti, Peter Langdon, Miriam Jones, Katey M. Walter Anthony, Kevin W. Becker, Kai-Uwe Hinrichs, Marcus Elvert
2012, Journal of Paleolimnology (48) 27-42
Atmospheric contributions of methane from Arctic wetlands during the Holocene are dynamic and linked to climate oscillations. However, long-term records linking climate variability to methane availability in Arctic wetlands are lacking. We present a multi-proxy ~12,000 year paleoecological reconstruction of intermittent methane availability from a radiocarbon-dated sediment core (LQ-West) taken...
Extending a prototype knowledge- and object-based image analysis model to coarser spatial resolution imagery: an example from the Missouri River
Laurence L. Strong
2012, Conference Paper, Proceedings GEOBIA 2012
A prototype knowledge- and object-based image analysis model was developed to inventory and map least tern and piping plover habitat on the Missouri River, USA. The model has been used to inventory the state of sandbars annually for 4 segments of the Missouri River since 2006 using QuickBird imagery. Interpretation...
Guidelines for collecting and maintaining archives for genetic monitoring
Jennifer A. Jackson, Linda Laikre, C. Scott Baker, Katherine C. Kendall, The Genetic Monitoring Working Group
2012, Conservation Genetics Resources (4) 527-536
Rapid advances in molecular genetic techniques and the statistical analysis of genetic data have revolutionized the way that populations of animals, plants and microorganisms can be monitored. Genetic monitoring is the practice of using molecular genetic markers to track changes in the abundance, diversity or distribution of populations, species or...
Metal dispersion resulting from mining activities in coastal environments: A pathways approach
Randolph A. Koski
2012, Oceanography (25) 170-183
Acid rock drainage (ARD) and disposal of tailings that result from mining activities impact coastal areas in many countries. The dispersion of metals from mine sites that are both proximal and distal to the shoreline can be examined using a pathways approach in which physical and chemical processes guide metal...
Correlation of clayey gouge in a surface exposure of the San Andreas fault with gouge at depth from SAFOD: Implications for the role of serpentinite in fault mechanics
Diane E. Moore, Michael J. Rymer
2012, Journal of Structural Geology (38) 51-60
Magnesium-rich clayey gouge similar to that comprising the two actively creeping strands of the San Andreas Fault in drill core from the San Andreas Fault Observatory at Depth (SAFOD) has been identified in a nearby outcrop of serpentinite within the fault zone at Nelson Creek. Each occurrence of the gouge...
New insights into the nation's carbon storage potential
Peter D. Warwick, Zhi-Liang Zhu
2012, Eos, Transactions, American Geophysical Union (93) 241-242
Carbon sequestration is a method of securing carbon dioxide (CO2) to prevent its release into the atmosphere, where it contributes to global warming as a greenhouse gas. Geologic storage of CO2 in porous and permeable rocks involves injecting high-pressure CO2 into a subsurface rock unit that has available pore space....
Warming and increased precipitation frequency on the Colorado Plateau: Implications for biological soil crusts and soil processes
Tamara J. Zelikova, David C. Housman, Ed E. Grote, Deborah A. Neher, Jayne Belnap
2012, Plant and Soil (355) 265-282
Aims Changes in temperature and precipitation are expected to influence ecosystem processes worldwide. Despite their globally large extent, few studies to date have examined the effects of climate change in desert ecosystems, where biological soil crusts are key nutrient cycling components. The goal of this work was to assess how...
An artificial perch to help Snail Kites handle an exotic Apple Snail
Kyle E. Pias, Zach C. Welch, Wiley M. Kitchens
2012, Waterbirds (35) 347-351
In the United States, the Snail Kite (Rostrhamus sociabilis plumbeus) is a federally endangered species and restricted to the wetlands of south-central Florida where the current population numbers less than 1,500. The Snail Kite is an extreme dietary specialist, previously feeding almost exclusively on one species of snail, the Florida...
Long-term growth of Desert Tortoises (Gopherus agassizii) in a southern Nevada population
P.A. Medica, Kenneth E. Nussear, Todd C. Esque, Mary B. Saethre
2012, Journal of Herpetology (46) 213-220
Knowledge of growth rates, age at maturity, and longevity are important aspects of a species life history and are directly applicable to life table creation and population viability analyses. We measured the growth of a cohort of 17 semi-wild Desert Tortoises (Gopherus agassizii) located in Rock Valley, Nevada over a...
How to catch a parasite: Parasite Niche Modeler (PaNic) meets Fishbase
Giovanni Strona, Kevin D. Lafferty
2012, Ecography (35) 481-486
Parasite Niche Modeler (PaNic) is a free online software tool that suggests potential hosts for fish parasites. For a particular parasite species from the major helminth groups (Acanthocephala, Cestoda, Monogenea, Nematoda, Trematoda), PaNic takes data from known hosts (maximum body length, growth rate, life span, age at first maturity, trophic...
A direct-gradient multivariate index of biotic condition
Leandro E. Miranda, J.N. Aycock, K. J. Killgore
2012, Transactions of the American Fisheries Society (141) 1637-1648
Multimetric indexes constructed by summing metric scores have been criticized despite many of their merits. A leading criticism is the potential for investigator bias involved in metric selection and scoring. Often there is a large number of competing metrics equally well correlated with environmental stressors, requiring a judgment call by...
Monitoring glacier surface seismicity in time and space using Rayleigh waves
T. D. Mikesell, K. Van Wijk, Matthew M. Haney, J.H. Bradford, Hans P. Marshall, J. T. Harper
2012, Journal of Geophysical Research F: Earth Surface (117) 1-12
Sliding glaciers and brittle ice failure generate seismic body and surface wave energy characteristic to the source mechanism. Here we analyze continuous seismic recordings from an array of nine short-period passive seismometers located on Bench Glacier, Alaska (USA) (61.033°N, 145.687°W). We focus on the arrival-time and amplitude information of the...
Geologic map of the Hecate Chasma quadrangle (V-28), Venus
Ellen R. Stofan, John E. Guest, Antony W. Brian
2012, Scientific Investigations Map 3163
The Hecate Chasma quadrangle (V–28) extends from lat 0° to 25° N. and from long 240° E. to 270° E. The quadrangle was mapped at 1:5,000,000 scale as part of the National Aeronautics and Space Administration (NASA) Planetary Geologic Mapping Program. Hecate Chasma is an extensive rift system consisting of multiple...
Knowledge gained from video-monitoring grassland passerine nests
Pamela J. Pietz, D. A. Granfors, Christine A. Ribic
Christine A. Ribic, Frank R. Thompson III, Pamela J. Pietz, editor(s)
2012, Book chapter, Video Surveillance of Nesting Birds
In the mid-1990s, researchers began using miniature cameras to videotape activities at cryptic passerine nests in grasslands.In subsequent years, use of these video surveillance systems spread dramatically, leading to major strides in our knowledge of nest predation and nesting ecology of many species.Studies using video nest surveillance have helped...
A Markov chain analysis of the movements of juvenile salmonids in the forebay of McNary Dam, Washington and Oregon, 2006-09
Noah S. Adams, Tyson W. Hatton
2012, Open-File Report 2012-1119
Passage and survival data for yearling and subyearling Chinook salmon and juvenile steelhead were collected at McNary Dam between 2006 and 2009. These data have provided critical information for resource managers to implement structural and operational changes designed to improve the survival of juvenile salmonids as they migrate past the...
A Markov chain analysis of the movements of juvenile salmonids, including sockeye salmon, in the forebay of McNary Dam, Washington and Oregon, 2006-09
Noah S. Adams, Tyson W. Hatton
2012, Open-File Report 2012-1120
Passage and survival data were collected at McNary Dam between 2006 and 2009. These data have provided critical information for resource managers to implement structural and operational changes designed to improve the survival of juvenile salmonids as they migrate past the dam. Much of the valuable information collected at McNary...
Geologic map of the Themis Regio quadrangle (V-53), Venus
Ellen R. Stofan, Antony W. Brian
2012, Scientific Investigations Map 3165
The Themis Regio quadrangle (V-53), Venus, has been geologically mapped at 1:5,000,000 scale as part of the NASA Planetary Geologic Mapping Program. The quadrangle extends from lat 25° to 50° S. and from long 270° to 300° E. and encompasses the Themis Regio highland, the surrounding plains, and the southernmost...
