Demonstration of a conceptual model for using LiDAR to improve the estimation of floodwater mitigation potential of Prairie Pothole Region wetlands
S. Huang, Caitlin Young, M. Feng, Hans Karl Heidemann, Matthew Cushing, D.M. Mushet, S. Liu
2011, Journal of Hydrology (405) 417-426
Recent flood events in the Prairie Pothole Region of North America have stimulated interest in modeling water storage capacities of wetlands and their surrounding catchments to facilitate flood mitigation efforts. Accurate estimates of basin storage capacities have been hampered by a lack of high-resolution elevation data. In this paper, we...
A simple graphical approach to quantitative monitoring of rangelands
C. Riginos, J. E. Herrick, S.R. Sundaresan, C. Farley, J. Belnap
2011, Rangelands (33) 6-13
The article reviews graphical interpretation of the four monitoring methods that can be used to generate a variety of indicators of rangeland ecosystem function. Data for all four of the monitoring methods can be recorded on a single data sheet that is designed to be usable by somebody with minimal...
Threshold responses of songbirds to long-term timber management on an active industrial forest
Douglas A. Becker, Petra Bohall Wood, Patrick D. Keyser, T. Bently Wigley, Rachel Dellinger, Cathy A. Weakland
2011, Forest Ecology and Management (262) 449-460
Forest managers often seek to balance economic benefits from timber harvesting with maintenance of habitat for wildlife, ecosystem function, and human uses. Most research on the relationship between avian abundance and active timber management has been short-term, lasting one to two years, creating the need to investigate long-term avian responses...
Microbial sulfate reduction and the sulfur budget for a complete section of altered oceanic basalts, IODP Hole 1256D (eastern Pacific)
Jeffrey C. Alt, Wayne C. Shanks
2011, Earth and Planetary Science Letters (310) 73-83
Sulfide mineralogy and the contents and isotope compositions of sulfur were analyzed in a complete oceanic volcanic section from IODP Hole 1256D in the eastern Pacific, in order to investigate the role of microbes and their effect on the sulfur budget in altered upper oceanic crust. Basalts in the 800m...
Vibrational, X-ray absorption, and Mössbauer spectra of sulfate minerals from the weathered massive sulfide deposit at Iron Mountain, California
Juraj Majzlan, Charles N. Alpers, Christian Bender Koch, R. Blaine McCleskey, Satish B.C. Myneni, John M. Neil
2011, Chemical Geology (284) 296-305
The Iron Mountain Mine Superfund site in California is a prime example of an acid mine drainage (AMD) system with well developed assemblages of sulfate minerals typical for such settings. Here we present and discuss the vibrational (infrared), X-ray absorption, and M??ssbauer spectra of a number of these phases, augmented...
Status and trend of the Kittlitz's Murrelet Brachyramphus brevirostris in Glacier Bay, Alaska
John F. Piatt, Mayumi L. Arimitsu, Gary S. Drew, Erica N. Madison, James L. Bodkin, Marc D. Romano
2011, Marine Ornithology: Journal of Seabird Research and Conservation (39) 65-75
We conducted standardized surveys for marine birds in Glacier Bay in seven years between 1991 and 2008. From our most recent survey, a combination of line- and strip-transect methods completed in 2008, we estimated that 4981 (95% CI 1293–8670) Kittlitz’s Murrelets Brachyramphus brevirostris resided in Glacier Bay during the month...
An analytical framework to assist decision makers in the use of forest ecosystem model predictions
Guy R. Larocque, Jagtar S. Bhatti, J.C. Ascough, J. Liu, N. Luckai, D. Mailly, L. Archambault, Andrew M. Gordon
2011, Environmental Modelling and Software (26) 280-288
The predictions from most forest ecosystem models originate from deterministic simulations. However, few evaluation exercises for model outputs are performed by either model developers or users. This issue has important consequences for decision makers using these models to develop natural resource management policies, as they cannot evaluate the extent to...
Magmatic-vapor expansion and the formation of high-sulfidation gold deposits: Structural controls on hydrothermal alteration and ore mineralization
Byron R. Berger, Richard W. Henley
2011, Ore Geology Reviews (39) 75-90
High-sulfidation copper–gold lode deposits such as Chinkuashih, Taiwan, Lepanto, Philippines, and Goldfield, Nevada, formed within 1500 m of the paleosurface in volcanic terranes. All underwent an early stage of extensive advanced argillic silica–alunite alteration followed by an abrupt change to spatially much more restricted stages of fracture-controlled sulfide–sulfosalt mineral assemblages...
A decision-analytic approach to the optimal allocation of resources for endangered species consultation
Sarah J. Converse, Kevin J. Shelley, Steve Morey, Jeffrey Chan, Andrea LaTier, Carolyn Scafidi, Deborah T. Crouse, Michael C. Runge
2011, Biological Conservation (144) 319-329
The resources available to support conservation work, whether time or money, are limited. Decision makers need methods to help them identify the optimal allocation of limited resources to meet conservation goals, and decision analysis is uniquely suited to assist with the development of such methods. In recent years, a number...
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...
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...
Molecular detection of vertebrates in stream water: A demonstration using rocky mountain tailed frogs and Idaho giant salamanders
C.S. Goldberg, D. S. Pilliod, R.S. Arkle, L.P. Waits
2011, PLoS ONE (6)
Stream ecosystems harbor many secretive and imperiled species, and studies of vertebrates in these systems face the challenges of relatively low detection rates and high costs. Environmental DNA (eDNA) has recently been confirmed as a sensitive and efficient tool for documenting aquatic vertebrates in wetlands and in a large river...
Toward a consistent model for strain accrual and release for the New Madrid Seismic Zone, central United States
S. E. Hough, M. Page
2011, Journal of Geophysical Research B: Solid Earth (116)
At the heart of the conundrum of seismogenesis in the New Madrid Seismic Zone is the apparently substantial discrepancy between low strain rate and high recent seismic moment release. In this study we revisit the magnitudes of the four principal 1811–1812 earthquakes using intensity values determined from individual assessments from...
Bird community response to filter strips in Maryland
P.J. Blank, G.P. Dively, D.E. Gill, C.A. Rewa
2011, Journal of Wildlife Management (75) 116-125
Filter strips are strips of herbaceous vegetation planted along agricultural field margins adjacent to streams or wetlands and are designed to intercept sediment, nutrients, and agrichemicals. Roughly 16,000 ha of filter strips have been established in Maryland through the United States Department of Agriculture's Conservation Reserve Enhancement Program. Filter strips...
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...
Implementing telemetry on new species in remote areas: Recommendations from a large-scale satellite tracking study of African waterfowl
J. Cappelle, S. A. Iverson, John Y. Takekawa, S. H. Newman, T. Dodman, N. Gaidet
2011, Ostrich (82) 17-26
We provide recommendations for implementing telemetry studies on waterfowl on the basis of our experience in a tracking study conducted in three countries of sub-Saharan Africa. The aim of the study was to document movements by duck species identified as priority candidates for the potential spread of avian influenza. Our...
P is for pit
W. H. Langer
2011, Aggregates Manager (16) 36-36
A gravel pit that was a source of happy childhood memories showcases the evolution of mining technology....
Imaging using cross-hole seismoelectric tomography
A.H. Araji, A. Revil, A. Jardani, B. Minsley
2011, SEG Technical Program Expanded Abstracts (30) 469-473
We propose a new cross-hole imaging approach based on seismoelectric conversions associated with the transmission of seismic waves from seismic sources located in a borehole to receivers electrodes located in a second borehole. The seismoelectric seismic-to-electric problem is solved using Biot theory coupled with a generalized Ohm's law with an...
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...
Evidence for mechanical and chemical alteration of iron-nickel meteorites on Mars: Process insights for Meridiani Planum
James W. Ashley, M.P. Golombek, P. R. Christensen, S. W. Squyres, T.J. McCoy, C. Schroder, I. Fleischer, J. R. Johnson, Kenneth E. Herkenhoff, T. J. Parker
2011, Journal of Geophysical Research E: Planets (116)
The weathering of meteorites found on Mars involves chemical and physical processes that can provide clues to climate conditions at the location of their discovery. Beginning on sol 1961, the Opportunity rover encountered three large iron meteorites within a few hundred meters of each other. In order of discovery, these...
N is for non-metallic
W. H. Langer
2011, Aggregates Manager (16) 64-64
Annual non-metallic minerals are typically twice the value of metallic minerals, which takes a little of the sparkle out of gold....
Nitrogen in Chinese coals
D. Wu, J. Lei, B. Zheng, X. Tang, M. Wang, Jiawen Hu, S. Li, B. Wang, R. B. Finkelman
2011, Chinese Journal of Geochemistry (30) 248-254
Three hundred and six coal samples were taken from main coal mines of twenty-six provinces, autonomous regions, and municipalities in China, according to the resource distribution and coal-forming periods as well as the coal ranks and coal yields. Nitrogen was determined by using the Kjeldahl method at U. S. Geological...
Nest success of grassland sparrows on reclaimed surface mines
G.E. Stauffer, Duane R. Diefenbach, M.R. Marshall, D.W. Brauning
2011, Journal of Wildlife Management (75) 548-557
Grasslands resulting from surface mine reclamation support grassland songbird populations in several midwestern and eastern states in the United States, especially where reclaimed mines are large (>1,000ha). However, most reclaimed surface mines in Pennsylvania are small (<200ha), and nest success is unknown. We evaluated nest success of grasshopper (Ammodramus savannarum),...
Mg-spinel lithology: A new rock type on the lunar farside
C.M. Pieters, S. Besse, J. Boardman, B. Buratti, L. Cheek, R. N. Clark, J. #NAME? Combe, D. Dhingra, J.N. Goswami, R.O. Green, J.W. Head, P. Isaacson, R. Klima, G. Kramer, S. Lundeen, E. Malaret, T. McCord, J. Mustard, J. Nettles, N. Petro, C. Runyon, M. Staid, J. Sunshine, L.A. Taylor, K. Thaisen, S. Tompkins, J. Whitten
2011, Journal of Geophysical Research E: Planets (116)
High-resolution compositional data from Moon Mineralogy Mapper (M 3) for the Moscoviense region on the lunar farside reveal three unusual, but distinctive, rock types along the inner basin ring. These are designated "OOS" since they are dominated by high concentrations of orthopyroxene, olivine, and Mg-rich spinel, respectively. The OOS occur...
Leopard population and home range estimates in north-central Namibia
A.B. Stein, T.K. Fuller, S. DeStefano, L.L. Marker
2011, African Journal of Ecology (49) 383-387
[No abstract available]...
