Compositional diversity and geologic insights of the Aristarchus crater from Moon Mineralogy Mapper data
J.F. Mustard, C.M. Pieters, P.J. Isaacson, J.W. Head, S. Besse, R. N. Clark, R.L. Klima, N.E. Petro, M.I. Staid, J.M. Sunshine, C.J. Runyon, S. Tompkins
2011, Journal of Geophysical Research E: Planets (116)
The Moon Mineralogy Mapper (M3) acquired high spatial and spectral resolution data of the Aristarchus Plateau with 140 m/pixel in 85 spectral bands from 0.43 to 3.0 m. The data were collected as radiance and converted to reflectance using the observational constraints and a solar spectrum scaled to the Moon-Sun...
Study design and sampling intensity for demographic analyses of bear populations
R.B. Harris, C.C. Schwartz, R.D. Mace, M.A. Haroldson
2011, Ursus (22) 24-36
The rate of population change through time (??) is a fundamental element of a wildlife population's conservation status, yet estimating it with acceptable precision for bears is difficult. For studies that follow known (usually marked) bears, ?? can be estimated during some defined time by applying either life-table or matrix...
Testing earthquake source inversion methodologies
M. Page, P.M. Mai, D. Schorlemmer
2011, Eos, Transactions, American Geophysical Union (92) 75-75
Source Inversion Validation Workshop; Palm Springs, California, 11-12 September 2010; Nowadays earthquake source inversions are routinely performed after large earthquakes and represent a key connection between recorded seismic and geodetic data and the complex rupture process at depth. The resulting earthquake source models quantify the spatiotemporal evolution of ruptures. They...
Comparative phylogeography of a coevolved community: Concerted population expansions in Joshua trees and four Yucca moths
C.I. Smith, S. Tank, W. Godsoe, J. Levenick, Espen Strand, T. Esque, O. 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...
Simultaneous speciation of arsenic, selenium, and chromium: Species stability, sample preservation, and analysis of ash and soil leachates
R.E. Wolf, S.A. Morman, P. L. Hageman, T.M. Hoefen, G.S. Plumlee
2011, Analytical and Bioanalytical Chemistry (401) 2733-2745
An analytical method using high-performance liquid chromatography separation with inductively coupled plasma mass spectrometry (ICP-MS) detection previously developed for the determination of Cr(III) and Cr(VI) has been adapted to allow the determination of As(III), As(V), Se(IV), Se(VI), Cr(III), and Cr(VI) under the same chromatographic conditions. Using this method, all six...
Fine-scale spatio-temporal variation in tiger Panthera tigris diet: Effect of study duration and extent on estimates of tiger diet in Chitwan National Park, Nepal
Paul M. Kapfer, Henry M. Streby, B. Gurung, A. Simcharoen, C.C. McDougal, J.L.D. Smith
2011, Wildlife Biology (17) 277-285
Attempts to conserve declining tiger Panthera tigris populations and distributions have experienced limited success. The poaching of tiger prey is a key threat to tiger persistence; a clear understanding of tiger diet is a prerequisite to conserve dwindling populations. We used unpublished data on tiger diet in combination with two previously...
A natural experiment on the condition-dependence of achromatic plumage reflectance in black-capped chickadees
L. D'Alba, Caroline R. Van Hemert, Colleen M. Handel, M.D. Shawkey
2011, PLoS ONE (6)
Honest advertisement models posit that only individuals in good health can produce and/or maintain ornamental traits. Even though disease has profound effects on condition, few studies have experimentally tested its effects on trait expression and even fewer have identified a mechanistic basis for these effects. Recent evidence suggests that black...
Sediment dynamics and the burial and exhumation of bedrock reefs along an emergent coastline as elucidated by repetitive sonar surveys: Northern Monterey Bay, CA
C. D. Storlazzi, T.A. Fregoso, N.E. Golden, D.P. Finlayson
2011, Marine Geology (289) 46-59
Two high-resolution bathymetric and acoustic backscatter sonar surveys were conducted along the energetic emergent inner shelf of northern Monterey Bay, CA, USA, in the fall of 2005 and the spring of 2006 to determine the impact of winter storm waves, beach erosion, and river floods on biologically-important siliclastic bedrock reef...
Habitat use and movement of the endangered Arroyo Toad (Anaxyrus californicus) in coastal southern California
M.J. Mitrovich, E.A. Gallegos, L.M. Lyren, R.E. Lovich, Robert N. Fisher
2011, Journal of Herpetology (45) 319-328
Information on the habitat use and movement patterns of Arroyo Toads (Anaxyrus californicus) is limited. The temporal and spatial characteristics of terrestrial habitat use, especially as it relates to upland use in coastal areas of the species' range, are poorly understood. We present analyses of radiotelemetry data from 40...
Late-Holocene climate evolution at the WAIS Divide site, West Antarctica: Bubble number-density estimates
John M. Fegyveresi, R. B. Alley, M. K. Spencer, J. J. Fitzpatrick, E.J. Steig, J.W.C. White, J.R. McConnell, K.C. Taylor
2011, Journal of Glaciology (57) 629-638
A surface cooling of ∼1.7°C occurred over the ∼two millennia prior to ∼1700 CE at the West Antarctic ice sheet (WAIS) Divide site, based on trends in observed bubble number-density of samples from the WDC06A ice core, and on an independently constructed accumulation-rate history using annual-layer dating corrected for density...
Estimating water supply arsenic levels in the New England bladder cancer study
J.R. Nuckols, Freeman L.E. Beane, J.H. Lubin, M.S. Airola, D. Baris, J. D. Ayotte, A. Taylor, C. Paulu, M.R. Karagas, J. Colt, M.H. Ward, A.-T. Huang, W. Bress, S. Cherala, D.T. Silverman, K.P. Cantor
2011, Environmental Health Perspectives (119) 1279-1285
Background: Ingestion of inorganic arsenic in drinking water is recognized as a cause of bladder cancer when levels are relatively high (≥ 150 µg/L). The epidemiologic evidence is less clear at the low-to-moderate concentrations typically observed in the United States. Accurate retrospective exposure assessment over a long time period is...
Quantifying the hydrological responses to climate change in an intact forested small watershed in Southern China
G. Zhou, X. Wei, Y. Wu, Y. Huang, J. Yan, Dongxiao Zhang, Q. Zhang, J. Liu, Z. Meng, C. Wang, G. Chu, S. Liu, X. Tang, Xiuying Liu
2011, Global Change Biology (17) 3736-3746
Responses of hydrological processes to climate change are key components in the Intergovernmental Panel for Climate Change (IPCC) assessment. Understanding these responses is critical for developing appropriate mitigation and adaptation strategies for sustainable water resources management and protection of public safety. However, these responses are not well understood and little...
Integration of Palmer Drought Severity Index and remote sensing data to simulate wetland water surface from 1910 to 2009 in Cottonwood Lake area, North Dakota
Shengli Huang, Devendra Dahal, Claudia Young, Gyanesh Chander, Shuguang Liu
2011, Remote Sensing of Environment (115) 3377-3389
Spatiotemporal variations of wetland water in the Prairie Pothole Region are controlled by many factors; two of them are temperature and precipitation that form the basis of the Palmer Drought Severity Index (PDSI). Taking the 196 km2 Cottonwood Lake area in North Dakota as our pilot study site, we integrated PDSI, Landsat...
A working environment for digital planetary data processing and mapping using ISIS and GRASS GIS
A. Frigeri, T. Hare, M. Neteler, A. Coradini, C. Federico, R. Orosei
2011, Conference Paper, Planetary and Space Science
Since the beginning of planetary exploration, mapping has been fundamental to summarize observations returned by scientific missions. Sensor-based mapping has been used to highlight specific features from the planetary surfaces by means of processing. Interpretative mapping makes use of instrumental observations to produce thematic maps that summarize observations of actual...
A multi-agency nutrient dataset used to estimate loads, improve monitoring design, and calibrate regional nutrient SPARROW models
D. A. Saad, G. E. Schwarz, Dale M. Robertson, N.L. Booth
2011, Journal of the American Water Resources Association (47) 933-949
Stream‐loading information was compiled from federal, state, and local agencies, and selected universities as part of an effort to develop regional SPAtially Referenced Regressions On Watershed attributes (SPARROW) models to help describe the distribution, sources, and transport of nutrients in streams throughout much of the United States. After screening, 2,739...
Potential shifts in dominant forest cover in interior Alaska driven by variations in fire severity
K. Barrett, A. David McGuire, E.E. Hoy, E.S. Kasischke
2011, Ecological Applications (21) 2380-2396
Large fire years in which >1% of the landscape burns are becoming more frequent in the Alaskan (USA) interior, with four large fire years in the past 10 years, and 79 000 km2 (17% of the region) burned since 2000. We modeled fire severity conditions for the entire area burned in large...
Bias-adjusted satellite-based rainfall estimates for predicting floods: Narayani Basin
M.S. Shrestha, G. A. Artan, S.R. Bajracharya, D.K. Gautam, S.A. Tokar
2011, Journal of Flood Risk Management (4) 360-373
In Nepal, as the spatial distribution of rain gauges is not sufficient to provide detailed perspective on the highly varied spatial nature of rainfall, satellite‐based rainfall estimates provides the opportunity for timely estimation. This paper presents the flood prediction of Narayani Basin at the Devghat hydrometric station (32 000 km2) using bias‐adjusted...
Informal and formal trail monitoring protocols and baseline conditions: Acadia National Park
Jeffrey L. Marion, Jeremy F. Wimpey, L. Park
2011, Report
At Acadia National Park, changing visitor use levels and patterns have contributed to an increasing degree of visitor use impacts to natural and cultural resources. To better understand the extent and severity of these resource impacts and identify effective management techniques, the park sponsored this research to develop monitoring protocols,...
Nutrient loadings to streams of the Continental United States from municipal and industrial effluent
M.A. Maupin, T. Ivahnenko
2011, Journal of the American Water Resources Association (47) 950-964
Data from the United States Environmental Protection Agency Permit Compliance System national database were used to calculate annual total nitrogen (TN) and total phosphorus (TP) loads to surface waters from municipal and industrial facilities in six major regions of the United States for 1992, 1997, and 2002. Concentration and effluent...
Geochemical and isotopic study of soils and waters from an Italian contaminated site: Agro Aversano (Campania)
M.A. Bove, R. A. Ayuso, B. de Vivo, A. Lima, S. Albanese
2011, Journal of Geochemical Exploration (109) 38-50
Lead isotope applications have been widely used in recent years in environmental studies conducted on different kinds of sampled media. In the present paper, Pb isotope ratios have been used to determine the sources of metal pollution in soils and waters in the Agro Aversano area. During three different sampling...
High-frequency filtering of strong-motion records
J. Douglas, D.M. Boore
2011, Bulletin of Earthquake Engineering (9) 395-409
The influence of noise in strong-motion records is most problematic at low and high frequencies where the signal to noise ratio is commonly low compared to that in the mid-spectrum. The impact of low-frequency noise (<1 Hz) on strong-motion intensity parameters such as ground velocities, displacements and response spectral ordinates...
Spatiotemporal evolution of dike opening and décollement slip at Kīlauea Volcano, Hawai'i
E. K. Montgomery-Brown, D. K. Sinnett, K.M. Larson, Michael P. Poland, P. Segall, Asta Mikijus
2011, Journal of Geophysical Research B: Solid Earth (116)
Rapid changes in ground tilt and GPS positions on Kīlauea Volcano, Hawai'i, are interpreted as resulting from a shallow, two-segment dike intrusion into the east rift zone that began at 1217 UTC (0217 HST) on 17 June 2007 and lasted almost 3 days. As a result of the intrusion, a...
Users as essential contributors to spatial cyberinfrastructures
B.S. Poore
2011, Conference Paper, Proceedings of the National Academy of Sciences of the United States of America
Current accounts of spatial cyberinfrastructure development tend to overemphasize technologies to the neglect of critical social and cultural issues on which adoption depends. Spatial cyberinfrastructures will have a higher chance of success if users of many types, including nonprofessionals, are made central to the development process. Recent studies in the...
Abundance, stock origin, and length of marked and unmarked juvenile Chinook salmon in the surface waters of greater Puget Sound
C. A. Rice, C.M. Greene, P. Moran, D.J. Teel, D.R. Kuligowski, Reginald R. Reisenbichler, E.M. Beamer, J.R. Karr, K.L. Fresh
2011, Transactions of the American Fisheries Society (140) 170-189
This study focuses on the use by juvenile Chinook salmon Oncorhynchus tshawytscha of the rarely studied neritic environment (surface waters overlaying the sublittoral zone) in greater Puget Sound. Juvenile Chinook salmon inhabit the sound from their late estuarine residence and early marine transition to their first year at sea. We measured the...
Age, genesis, and paleoclimatic interpretation of the Sangamon/Loveland complex in the Lower Mississippi Valley, USA
H. W. Markewich, D.A. Wysocki, M.J. Pavich, E.M. Rutledge
2011, Geological Society of America Bulletin (123) 21-39
For more than a century, the Sangamon paleosol (the Sangamon) has been an integral part of geologic and pedologic investigations in the central United States, including the Upper Mississippi and Lower Missouri River Valleys. Compositional, pedologic, micromorphologic, stratigraphic, and age data indicate that the prominent reddish paleosol developed in silt-rich...
