Mapping and monitoring Louisiana's mangroves in the aftermath of the 2010 Gulf of Mexico Oil spill
S. Giri, J. Long, L. Tieszen
2011, Journal of Coastal Research (27) 1059-1064
Information regarding the present condition, historical status, and dynamics of mangrove forests is needed to study the impacts of the Gulf of Mexico oil spill and other stressors affecting mangrove ecosystems. Such information is unavailable for Louisiana at sufficient spatial and thematic detail. We prepared mangrove forest distribution maps of...
USGS "Did You Feel It?" internet-based macroseismic intensity maps
D.J. Wald, V. Quitoriano, B. Worden, M. Hopper, J. W. Dewey
2011, Annals of Geophysics (54) 688-707
The U.S. Geological Survey (USGS) "Did You Feel It?" (DYFI) system is an automated approach for rapidly collecting macroseismic intensity data from Internet users' shaking and damage reports and generating intensity maps immediately following earthquakes; it has been operating for over a decade (1999-2011). DYFI-based intensity maps made rapidly available...
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. ...
Evidence of shift in C4 species range in central Argentina during the late Holocene
L.C.R. Silva, M.A. Giorgis, M. Anand, L. Enrico, N. Perez-Harguindeguy, V. Falczuk, L.L. Tieszen, M. Cabido
2011, Plant and Soil (349) 261-279
AimMillennial-scale biogeographic changes are well understood in many parts of the world, but little is known about long-term vegetation dynamics in subtropical regions. Here we investigate shifts in C3/C4 plant abundance occurred in central Argentina during the past few millenniaMethodsWe determined present...
The United Nations framework classification for fossil energy and mineral reserves and resources 2009
Duncan MacDonald, M. Lynch-Bell, J. Ross, S. Heiberg, C. Griffiths, T. Klett
2011, Conference Paper, Proceedings - SPE Annual Technical Conference and Exhibition
Effective resource management in a globalizing economy requires accurate assessments of fossil energy and minerals resources. The recoverable quantities must be described and categorized in a manner that is consistent with scientific and social/economic information describing the economy as well as with the information describing the projects to recover them....
Trends in pesticide concentrations in streams of the western United States, 1993-2005
Henry M. Johnson, Joseph L. Domagalski, Dina Saleh
2011, Journal of the American Water Resources Association (47) 265-286
Trends in pesticide concentrations for 15 streams in California, Oregon, Washington, and Idaho were determined for the organophosphate insecticides chlorpyrifos and diazinon and the herbicides atrazine, s‐ethyl diproplythiocarbamate (EPTC), metolachlor, simazine, and trifluralin. A parametric regression model was used to account for flow, seasonality, and antecedent hydrologic conditions and thereby...
Building transparent data access for ocean observatories: Coordination of U.S. IOOS DMAC with NSF's OOI Cyberinfrastructure
M. Arrott, Corrine Alexander, J. Graybeal, C. Mueller, R. Signell, J. de La Beaujardière, A. Taylor, J. Wilkin, B. Powell, J. Orcutt
2011, Conference Paper, OCEANS'11 - MTS/IEEE Kona, Program Book
The NOAA-led U.S. Integrated Ocean Observing System (IOOS) and the National Science Foundation's Ocean Observatories Initiative (OOI) have been collaborating since 2007 on advanced tools and technologies that ensure open access to ocean observations and models. Initial collaboration focused on serving ocean data via cloud computing-a key component of the...
Diel activity of Gulf of Mexico sturgeon in a northwest Florida bay
B.M. Wrege, M.S. Duncan, J. Jeffery Isely
2011, Journal of Applied Ichthyology (27) 322-326
In this paper, we assess patterns in activity of Gulf of Mexico sturgeon Acipenser oxyrinchus desotoi over a 24-h period in the Pensacola bay system, Florida. Although seasonal migration of sturgeon is well documented, little information is available pertaining to daily variation in activity. We surgically implanted 58 Gulf sturgeon...
Interhemispheric ice-sheet synchronicity during the last glacial maximum
M.E. Weber, P.U. Clark, W. Ricken, J.X. Mitrovica, S. W. Hostetler, G. Kuhn
2011, Science (334) 1265-1269
The timing of the last maximum extent of the Antarctic ice sheets relative to those in the Northern Hemisphere remains poorly understood. We develop a chronology for the Weddell Sea sector of the East Antarctic Ice Sheet that, combined with ages from other Antarctic ice-sheet sectors, indicates that the advance...
Estimating basin scale evapotranspiration (ET) by water balance and remote sensing methods
G.B. Senay, S. Leake, P.L. Nagler, G. Artan, J. Dickinson, J.T. Cordova, E. P. Glenn
2011, Hydrological Processes (25) 4037-4049
Evapotranspiration (ET) is an important hydrological process that can be studied and estimated at multiple spatial scales ranging from a leaf to a river basin. We present a review of methods in estimating basin scale ET and its applications in understanding basin water balance dynamics. The review focuses on two...
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...
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...
The distribution and abundance of a nuisance native alga, Didymosphen Didymosphenia geminata, in streams of Glacier National Park: Climate drivers and management implications
Schweiger E. William, I.W. Ashton, C.C. Muhlfeld, L.A. Jones, L.L. Bahls
2011, Park Science (28)
Didymosphenia geminata (didymo) is a freshwater alga native to North America, including Glacier National Park, Montana. It has long been considered a cold-water species, but has recently spread to lower latitudes and warmer waters, and increasingly forms large blooms that cover streambeds. We used a comprehensive monitoring data set from...
Microtopography enhances nitrogen cycling and removal in created mitigation wetlands
K.L. Wolf, C. Ahn, G.B. Noe
2011, Ecological Engineering (37) 1398-1406
Natural wetlands often have a heterogeneous soil surface topography, or microtopography (MT), that creates microsites of variable hydrology, vegetation, and soil biogeochemistry. Created mitigation wetlands are designed to mimic natural wetlands in structure and function, and recent mitigation projects have incorporated MT as one way to attain this goal. Microtopography...
Daily movements of female mallards wintering in Southwestern Louisiana
Paul T. Link, Alan D. Afton, Robert R. Cox Jr., Bruce E. Davis
2011, Waterbirds (34) 422-428
Understanding daily movements of waterfowl is crucial to management of winter habitats, especially along the Gulf Coast where hunting pressure is high. Radio-telemetry was used to investigate movements of female Mallards (Anas platyrchychos) wintering in southwestern Louisiana. Movement distances were analyzed from 2,455 paired locations (diurnal and nocturnal) of 126...
Associations between dioxins/furans and dioxin-like PCBs in estuarine sediment and blue crab
J. Liebens, C.J. Mohrherr, Natalie K. Karouna-Renier, R.A. Snyder, K.R. Rao
2011, Water, Air, & Soil Pollution (222) 403-419
The objective of the present study was to evaluate the relationships between the quantity, toxicity, and compositional profile of dioxin/furan compounds (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) in estuarine sediment and in the blue crab (Callinectes sapidus). Sediment and blue crab samples were collected in three small urban...
Stability of Mg-sulfates at-10C and the rates of dehydration/rehydration processes under conditions relevant to Mars
A. Wang, J.J. Freeman, I.-M. Chou, B.L. Jolliff
2011, Journal of Geophysical Research E: Planets (116)
We report the results of low temperature (−10°C) experiments on the stability fields and phase transition pathways of five hydrous Mg-sulfates. A low temperature form of MgSO4·7H2O (LT-7w) was found to have a wide stability field that extends to low relative humidity (∼13% RH at −10°C). Using information on the...
On the use of the beta distribution in probabilistic resource assessments
Ricardo A. Olea
2011, Natural Resources Research (20) 377-388
The triangular distribution is a popular choice when it comes to modeling bounded continuous random variables. Its wide acceptance derives mostly from its simple analytic properties and the ease with which modelers can specify its three parameters through the extremes and the mode. On the negative side, hardly any real...
Adaptive management in the U.S. National Wildlife Refuge System: Science-management partnerships for conservation delivery
C. T. Moore, E. V. Lonsdorf, M. G. Knutson, H. P. Laskowski, S. K. Lor
2011, Journal of Environmental Management (92) 1395-1402
Adaptive management is an approach to recurrent decision making in which uncertainty about the decision is reduced over time through comparison of outcomes predicted by competing models against observed values of those outcomes. The National Wildlife Refuge System (NWRS) of the...
Forecasting carbon budget under climate change and CO 2 fertilization for subtropical region in China using integrated biosphere simulator (IBIS) model
Q. Zhu, H. Jiang, J. Liu, C. Peng, X. Fang, S. Yu, G. Zhou, X. Wei, W. Ju
2011, Polish Journal of Ecology (59) 3-24
The regional carbon budget of the climatic transition zone may be very sensitive to climate change and increasing atmospheric CO 2 concentrations. This study simulated the carbon cycles under these changes using process-based ecosystem models. The Integrated Biosphere Simulator (IBIS), a Dynamic Global Vegetation Model (DGVM), was used to evaluate...
The effects of myxobolus cerebralis on the physiological performance of whirling disease resistant and susceptible strains of rainbow trout
E.R. Fetherman, Christopher A. Myrick, D.L. Winkelman, G.J. Schisler
2011, Journal of Aquatic Animal Health (23) 169-177
The development of rainbow trout Oncorhynchus mykiss strains that are resistant to whirling disease has shown promise as amanagement tool for populationsin areas where Myxobolus cerebralisis present. However, the physiological effects of the disease on characteristics necessary for fish survival in natural river conditions have not been tested in many...
Landslide stability: Role of rainfall-induced, laterally propagating, pore-pressure waves
G. R. Priest, W.H. Schulz, W. L. Ellis, J.A. Allan, A. R. Niem, W. A. Niem
2011, Environmental & Engineering Geoscience (17) 315-335
The Johnson Creek Landslide is a translational slide in seaward-dipping Miocene siltstone and sandstone (Astoria Formation) and an overlying Quaternary marine terrace deposit. The basal slide plane slopes sub-parallel to the dip of the Miocene rocks, except beneath the back-tilted toe block, where it slopes inland. Rainfall events raise pore-water...
Probabilistic fault displacement hazards for the southern san andreas fault using scenarios and empirical slips
R. Chen, M.D. Petersen
2011, Earthquake Spectra (27) 293-313
We apply a probabilistic method to develop fault displacement hazard maps and profiles for the southern San Andreas Fault. Two slip models are applied: (1) scenario slip, defined by the ShakeOut rupture model, and (2) empirical slip, calculated using regression equations relating global slip to earthquake magnitude and distance along...
Inversion of ground-motion data from a seismometer array for rotation using a modification of Jaeger's method
Wu-Cheng Chi, W.H.K. Lee, J.A.D. Aston, C.J. Lin, C.-C. Liu
2011, Bulletin of the Seismological Society of America (101) 3105-3109
We develop a new way to invert 2D translational waveforms using Jaeger's (1969) formula to derive rotational ground motions about one axis and estimate the errors in them using techniques from statistical multivariate analysis. This procedure can be used to derive rotational ground motions and strains using arrayed translational data,...
Monitoring the Earthquake source process in North America
Robert B. Herrmann, H. Benz, C.J. Ammon
2011, Bulletin of the Seismological Society of America (101) 2609-2625
With the implementation of the USGS National Earthquake Information Center Prompt Assessment of Global Earthquakes for Response system (PAGER), rapid determination of earthquake moment magnitude is essential, especially for earthquakes that are felt within the contiguous United States. We report an implementation of moment tensor processing for application to broad,...
