Landsat imagery: a unique resource
H. Miller, N. Sexton, L. Koontz
2011, Report
Landsat satellites provide high-quality, multi-spectral imagery of the surface of the Earth. These moderate-resolution, remotely sensed images are not just pictures, but contain many layers of data collected at different points along the visible and invisible light spectrum. These data can be manipulated to reveal what the Earth’s surface looks...
Sulfide mineral oxidation
D. Kirk Nordstrom
Joachim Reitner, V. Thiel, editor(s)
2011, Book chapter, Encyclopedia of geobiology
No abstract available. ...
Arsenic
John F. Stolz, Ron Oremland
Joachim Reitner, V. Thiel, editor(s)
2011, Book chapter, Encyclopedia of geobiology
No abstract available....
Source apportionment of atmospheric trace gases and particulate matter--Comparison of log-ratio and traditional approaches
Mark A. Engle, Bernhard Peucker-Ehrenbrink, Josep M. Martin-Fernandez, David P. Krabbenhoft, Paul J. Lamothe, Michael H. Bothner, Ricardo A. Olea, Allan Kolker, Michael T. Tate
2011, Conference Paper, Proceedings of the 4th International Workshop on Compositional Data Analysis, Girona, Spain: International Center for Numerical Methods in Engineering
No abstract available....
Nutrient inputs to the Laurentian Great Lakes by source and watershed estimated using SPARROW watershed models
Dale M. Robertson, David A. Saad
2011, Journal of the American Water Resources Association (47) 1011-1033
Nutrient input to the Laurentian Great Lakes continues to cause problems with eutrophication. To reduce the extent and severity of these problems, target nutrient loads were established and Total Maximum Daily Loads are being developed for many tributaries. Without detailed loading information it is difficult to determine if the targets...
Chapter 2: Sagebrush-associated species of conservation concern
Mary M. Rowland, Lowell H. Suring, Matthias Leu, Steven T. Knick, Michael J. Wisdom
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
Selection of species of concern is a critical early step in conducting broad-scale ecological assessments for conservation planning and management. Many criteria can be used to guide this selection, such as conservation status, existing knowledge base, and association with plant communities of interest. In conducting the Wyoming Basins Ecoregional Assessment...
Chapter 1: Study area description
Mary M. Rowland, Matthias Leu
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
The boundary for the Wyoming Basins Ecoregional Assessment (WBEA) was largely determined by the co-occurrence of some of the largest tracts of intact sagebrush (Artemisia spp.) remaining in the western United States with areas of increasing resource extraction. The WBEA area includes two ecoregions in their entirety, Wyoming Basins and...
Identifying biogeochemical processes beneath stormwater infiltration ponds in support of a new best management practice for groundwater protection
Andrew M. O’Reilly, Ni-Bin Chang, Martin P. Wanielista, Zhemin Xuan
Mario Schirmer, Eduard Hoehn, Tobias Vogt, editor(s)
2011, Conference Paper, GQ10 : Groundwater quality management in a rapidly changing world : proceedings of the seventh International groundwater quality conference held in Zurich, Switzerland, 13-18 June 2010
When applying a stormwater infiltration pond best management practice (BMP) for protecting the quality of underlying groundwater, a common constituent of concern is nitrate. Two stormwater infiltration ponds, the SO and HT ponds, in central Florida, USA, were monitored. A temporal succession of biogeochemical processes was identified beneath the SO...
Diet composition and feeding patterns of adult shovelnose sturgeon (Scaphirhynchus platorynchus) in the lower Platte River, Nebraska, USA
T. Rapp, D. A. Shuman, B. D. S. Graeb, S. R. Chipps, E. J. Peters
2011, Journal of Applied Ichthyology (27) 351-355
Two-hundred and seven adult shovelnose sturgeon ranging from 450 to 718 mm in length were sampled from June to October 2001 and May to July 2002 to determine diet composition and feeding patterns in the lower Platte River. Shovelnose sturgeon fed primarily upon aquatic insect larvae and nymphs (>99% composition by...
A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1WS
J. W. Brakebill, S.E. Terziotti
2011, Report
A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions correspond with the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program Major River Basin (MRB) study units 2, 3, 4, 5, and 7 (Preston...
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...
Low strength of deep San Andreas fault gouge from SAFOD core
David A. Lockner, Carolyn A. Morrow, Diane E. Moore, Stephen H. Hickman
2011, Nature (472) 82-86
The San Andreas fault accommodates 28–34 mm yr−1 of right lateral motion of the Pacific crustal plate northwestward past the North American plate. In California, the fault is composed of two distinct locked segments that have produced great earthquakes in historical times, separated by a 150-km-long creeping zone. The San Andreas Fault Observatory...
Diel cycles in dissolved barium, lead, iron, vanadium, and nitrite in a stream draining a former zinc smelter site near Hegeler, Illinois
Robert T. Kay, G.E. Groschen, G. Cygan, David H. Dupre
2011, Chemical Geology (283) 99-108
Diel variations in the concentrations of a number of constituents have the potential to substantially affect the appropriate sampling regimen in acidic streams. Samples taken once during the course of the day cannot adequately reflect diel variations in water quality and may result in an inaccurate understanding of biogeochemical...
Dietary calcein marking of shovelnose sturgeon and the effect of sunlight on mark retention
D. C. Honeyfield, G. A. Kindschi, T.A. Bell, J.W. Mohler
2011, North American Journal of Aquaculture (73) 129-134
Calcein, a fluorochrome dye, is a potential fish‐marking agent that has not been evaluated in sturgeon. Shovelnose sturgeon Scaphirhynchus platorynchus (average weight, 9.7 g) were fed calcein, immersed in a calcein bath, or left unmarked to determine calcein mark intensity. In the first study, six treatments were evaluated in a two‐by‐three factorial...
Quantifying seascape structure: Extending terrestrial spatial pattern metrics to the marine realm
L.M. Wedding, L.A. Christopher, S.J. Pittman, Alan M. Friedlander, S. Jorgensen
2011, Marine Ecology Progress Series (427) 219-232
Spatial pattern metrics have routinely been applied to characterize and quantify structural features of terrestrial landscapes and have demonstrated great utility in landscape ecology and conservation planning. The important role of spatial structure in ecology and management is now commonly recognized, and recent advances in marine remote sensing technology have...
Managed flood effects on beaver pond habitat in a desert riverine ecosystem, bill williams river, Arizona USA
D.C. Andersen, P.B. Shafroth, C.M. Pritekel, M. W. O’Neill
2011, Wetlands (31) 195-206
The ecological effects of beaver in warm-desert streams are poorly documented, but potentially significant. For example, stream water and sediment budgets may be affected by increased evaporative losses and sediment retention in beaver ponds. We measured physical attributes of beaver pond and adjacent lotic habitats on a regulated Sonoran Desert...
Rangewide phylogeography and landscape genetics of the Western U.S. endemic frog Rana boylii (Ranidae): Implications for the conservation of frogs and rivers
A.J. Lind, P.Q. Spinks, G. M. Fellers, H.B. Shaffer
2011, Conservation Genetics (12) 269-284
Genetic data are increasingly being used in conservation planning for declining species. We sampled both the ecological and distributional limits of the foothill yellow-legged frog, Rana boylii to characterize mitochondrial DNA (mtDNA) variation in this declining, riverine amphibian. We evaluated 1525 base pairs (bp) of cytochrome b and ND2 fragments...
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...
Rock formation characterization for CO2-EOR and carbon geosequestration; 3D seismic amplitude and coherency anomalies, Wellington Field, Kansas, USA
D. Ohl, A. Raef, L. Watnef, S. Bhattacharya
2011, SEG Technical Program Expanded Abstracts (30) 1978-1983
In this paper, we present a workflow for a Mississipian carbonates characterization case-study integrating post-stack seismic attributes, well-logs porosities, and seismic modeling to explore relating changes in small-scale "lithofacies" properties and/or sub-seismic resolution faulting to key amplitude and coherency 3D seismic attributes. The main objective of this study is to...
Rapid reaction of nanomolar Mn(II) with superoxide radical in seawater and simulated freshwater
S.P. Hansard, H.D. Easter, Bettina M. Voelker
2011, Environmental Science & Technology (45) 2811-2817
Superoxide radical (O2−) has been proposed to be an important participant in oxidation−reduction reactions of metal ions in natural waters. Here, we studied the reaction of nanomolar Mn(II) with O2− in seawater and simulated freshwater, using chemiluminescence detection of O2− to quantify the effect of Mn(II) on the decay kinetics of O2−....
Consequences of increasing bioenergy demand on wood and forests: An application of the Global Forest Products Model
J. Buongiorno, R. Raunikar, S. Zhu
2011, Journal of Forest Economics (17) 214-229
The Global Forest Products Model (GFPM) was applied to project the consequences for the global forest sector of doubling the rate of growth of bioenergy demand relative to a base scenario, other drivers being maintained constant. The results showed that this would lead to the convergence of the price 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...
Pennsylvanian coniferopsid forests in sabkha facies reveal the nature of seasonal tropical biome
H. J. Falcon-Lang, N.A. Jud, Nelson W. John, William A. DiMichele, D.S. Chaney, S. G. Lucas
2011, Geology (39) 371-374
Pennsylvanian fossil forests are known from hundreds of sites across tropical Pangea, but nearly all comprise remains of humid Coal Forests. Here we report a unique occurrence of seasonally dry vegetation, preserved in growth position along >5 km of strike, in the Pennsylvanian (early Kasimovian, Missourian) of New Mexico (United...
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...
Dirhinus texanus (Hymenoptera: Chalcididae) from Utah
L.L. Pech, M.W. Gates, T. B. Graham
2011, Southwestern Naturalist (56) 275-276
We collected a Dirhinus texanus (Hymenoptera: Chalcididae) in Salt Creek Canyon, Canyonlands National Park, San Juan County, Utah. This is the first record for D. texanus in Utah. ...
