Pesticides in rain in four agricultural watersheds in the United States
Jason R. Vogel, Michael S. Majewski, Paul D. Capel
2008, Journal of Environmental Quality (37) 1101-1115
Rainfall samples were collected during the 2003 and 2004 growing seasons at four agricultural locales across the USA in Maryland, Indiana, Nebraska, and California. The samples were analyzed for 21 insecticides, 18 herbicides, three fungicides, and 40 pesticide degradates. Data from all sites combined show that 7 of the 10...
Dual-RiverSonde measurements of two-dimensional river flow patterns
C.C. Teague, D.E. Barrick, P.M. Lilleboe, Ralph T. Cheng, Paul Stumpner, Jon R. Burau
2008, Conference Paper, Proceedings of the IEEE Working Conference on Current Measurement Technology
Two-dimensional river flow patterns have been measured using a pair of RiverSondes in two experiments in the Sacramento-San Joaquin River Delta system of central California during April and October 2007. An experiment was conducted at Walnut Grove, California in order to explore the use of dual RiverSondes to measure flow...
Fidelity and breeding probability related to population density and individual quality in black brent geese Branta bernicla nigricans
James S. Sedinger, N.D. Chelgren, David H. Ward, M. S. Lindberg
2008, Journal of Animal Ecology (77) 702-712
1. Patterns of temporary emigration (associated with non-breeding) are important components of variation in individual quality. Permanent emigration from the natal area has important implications for both individual fitness and local population dynamics. 2. We estimated both permanent and temporary emigration of black brent geese (Branta bernicla nigricans Lawrence) from...
El Grupo Cerúleo: Collaboration to assess nonbreeding range of cerulean warbler in South America
G. Colorado, P. Hamel, A. Rodewald, W. Thogmartin
2008, Conference Paper, Ornitologia Neotropical
Cerulean Warbler (Dendroica cerulea. Parulidae) has been listed as a vulnerable species by the International Union for the Conservation of Nature because of recent population declines. An international, proactive approach to Cerulean Warbler conservation, the Cerulean Warbler Technical Group, was founded in 2001. One of its subcommittees, El Grupo...
Dissolved metals and associated constituents in abandoned coal-mine discharges, Pennsylvania, USA. Part 2: Geochemical controls on constituent concentrations
C.A. Cravotta III
2008, Applied Geochemistry (23) 203-226
Water-quality data for discharges from 140 abandoned mines in the Anthracite and Bituminous Coalfields of Pennsylvania reveal complex relations among the pH and dissolved solute concentrations that can be explained with geochemical equilibrium models. Observed values of pH ranged from 2.7 to 7.3 in the coal-mine discharges (CMD). Generally, flow...
Implications of black-tailed prairie dog spatial dynamics to black-footed ferrets
D.S. Jachowski, J.J. Millspaugh, E. Biggins, T.M. Livieri, Marc R. Matchett
2008, Natural Areas Journal (28) 14-25
The spatial dynamics of black-tailed prairie dog (Cynomys ludovicianus) colonies affect the utility of these environments for other wildlife, including the endangered black-footed ferret (Mustela nigripes). We used location data of active and inactive black-tailed prairie dog burrows to investigate colony structure, spatial distribution, and patch dynamics of two colonies...
Ocean forecasting in terrain-following coordinates: Formulation and skill assessment of the Regional Ocean Modeling System
D.B. Haidvogel, H. Arango, W.P. Budgell, B.D. Cornuelle, E. Curchitser, Lorenzo E. Di, K. Fennel, W.R. Geyer, A.J. Hermann, L. Lanerolle, J. Levin, J.C. McWilliams, A.J. Miller, A.M. Moore, T.M. Powell, A.F. Shchepetkin, C. R. Sherwood, R. P. Signell, J.C. Warner, J. Wilkin
2008, Journal of Computational Physics (227) 3595-3624
Systematic improvements in algorithmic design of regional ocean circulation models have led to significant enhancement in simulation ability across a wide range of space/time scales and marine system types. As an example, we briefly review the Regional Ocean Modeling System, a member of a general class of three-dimensional, free-surface, terrain-following...
Controls on mineralisation in the Sierra Foothills gold province, central California, USA: A GIS-based reconnaissance prospectivity analysis
F.P. Bierlein, H.J. Northover, D.I. Groves, R.J. Goldfarb, E.E. Marsh
2008, Australian Journal of Earth Sciences (55) 61-78
The assessment of spatial relationships between the location, abundance and size of orogenic-gold deposits in the highly endowed Sierra Foothills gold province in California, via the combination of field studies and a GIS-based analysis, illustrates the power of such an approach to the characterisation of important parameters of mineral systems,...
Measuring gravity currents in the Chicago River, Chicago, Illinois
K. A. Oberg, J. A. Czuba, K. K. Johnson
2008, Conference Paper, Proceedings of the IEEE working conference on current measurement technology
Recent studies of the Chicago River have determined that gravity currents are responsible for persistent bidirectional flows that have been observed in the river. A gravity current is the flow of one fluid within another caused by a density difference between the fluids. These studies demonstrated how acoustic Doppler current...
Fate and transport of pesticides in the ground water systems of southwest Georgia, 1993-2005
M.S. Dalton, E. A. Frick
2008, Conference Paper, Journal of Environmental Quality
Modern agricultural practices in the United States have resulted in nearly unrivaled efficiency and productivity. Unfortunately, there is also the potential for release of these compounds to the environment and consequent adverse affects on wildlife and human populations. Since 1993, the National Water-Quality Assessment (NAWQA) program of the U.S. Geological...
Evaluation of a method for determining concentrations of isoeugenol, an AQUI-S residue, in fillet tissue from freshwater fish species.
J.R. Meinertz, Theresa M. Schreier, J.A. Bernardy
2008, Journal of AOAC International (91) 884-891
AQUI-S is a fish anesthetic/sedative that is approved for use in a number of countries throughout the world and has the potential for use in the United States. The active ingredient in AQUI-S is isoeugenol. A method for determining isoeugenol concentrations in edible fillet tissue is needed for regulatory purposes,...
Compositional mapping of Saturn's satellite Dione with Cassini VIMS and implications of dark material in the Saturn system
R. N. Clark, J. M. Curchin, R. Jaumann, D. P. Cruikshank, R. H. Brown, T.M. Hoefen, K. Stephan, Johnnie N. Moore, B. J. Buratti, K. H. Baines, P. D. Nicholson, R.M. Nelson
2008, Icarus (193) 372-386
Cassini VIMS has obtained spatially resolved imaging spectroscopy data on numerous satellites of Saturn. A very close fly-by of Dione provided key information for solving the riddle of the origin of the dark material in the Saturn system. The Dione VIMS data show a pattern of bombardment of fine, sub-0.5-??m...
Laboratory and field evaluation of a flushable oxic limestone drain for treatment of net-acidic drainage from a flooded anthracite mine, Pennsylvania, USA
C.A. Cravotta III
2008, Applied Geochemistry (23) 3404-3422
This paper demonstrates the use of dissolution-rate data obtained in the laboratory to indicate the potential quality of effluent from a field-scale oxic limestone drain (OLD) treatment system for neutralization of dilute acidic mine drainage (AMD). Effluent from the Reevesdale Mine South Dip Tunnel, a large source of AMD and...
Fluctuating Arctic Sea ice thickness changes estimated by an in situ learned and empirically forced neural network model
G. I. Belchansky, David C. Douglas, Nikita G. Platonov
2008, Journal of Climate (21) 716-729
Sea ice thickness (SIT) is a key parameter of scientific interest because understanding the natural spatiotemporal variability of ice thickness is critical for improving global climate models. In this paper, changes in Arctic SIT during 1982-2003 are examined using a neural network (NN) algorithm trained with in situ submarine ice...
Differences in evaporation between a floating pan and class a pan on land
J.R. Masoner, D.I. Stannard, S. C. Christenson
2008, Journal of the American Water Resources Association (44) 552-561
Research was conducted to develop a method for obtaining floating pan evaporation rates in a small (less than 10,000 m2) wetland, lagoon, or pond. Floating pan and land pan evaporation data were collected from March 1 to August 31, 2005, at a small natural wetland located in the alluvium of the...
Vision of a cyberinfrastructure for nonnative, invasive species management
Jim Graham, Annie Simpson, Alycia W. Crall, Catherine S. Jarnevich, Greg Newman, Thomas J. Stohlgren
2008, BioScience (58) 263-268
Although the quantity of data on the location, status, and management of invasive species is ever increasing, invasive species data sets are often difficult to obtain and integrate. A cyberinfrastructure for such information could make these data available for Internet users. The data can be used to create regional watch...
Sensitivity of June near‐surface temperatures and precipitation in the eastern United States to historical land cover changes since European settlement
John E. Strack, Roger A. Pielke Sr., Louis T. Steyaert, Robert G. Knox
2008, Water Resources Research (44) 1-13
Land cover changes alter the near surface weather and climate. Changes in land surface properties such as albedo, roughness length, stomatal resistance, and leaf area index alter the surface energy balance, leading to differences in near surface temperatures. This study utilized a newly developed land cover data set for the...
Updated radiometric calibration for the Landsat-5 thematic mapper reflective bands
D. L. Helder, B. L. Markham, K. J. Thome, J. A. Barsi, G. Chander, R. Malla
2008, Conference Paper
The Landsat-5 Thematic Mapper (TM) has been the workhorse of the Landsat system. Launched in 1984, it continues collecting data through the time frame of this paper. Thus, it provides an invaluable link to the past history of the land features of the Earth's surface, and it becomes imperative to...
Transport of water, carbon, and sediment through the Yukon River Basin
Timothy P. Brabets, Paul F. Schuster
2008, Fact Sheet 2008-3005
In 2001, the U.S. Geological Survey (USGS) began a water-quality study of the Yukon River. The Yukon River Basin (YRB), which encompasses 330,000 square miles in northwestern Canada and central Alaska (fig. 1), is one of the largest and most diverse ecosystems in North America. The Yukon River is more...
Sulfide oxidation and distribution of metals near abandoned copper mines in coastal environments, Prince William Sound, Alaska, USA
R.A. Koski, L. Munk, A. L. Foster, Wayne C. Shanks III, L.L. Stillings
2008, Applied Geochemistry (23) 227-254
The oxidation of sulfide-rich rocks, mostly leftover debris from Cu mining in the early 20th century, is contributing to metal contamination of local coastal environments in Prince William Sound, Alaska. Analyses of sulfide, water, sediment, precipitate and biological samples from the Beatson, Ellamar, and Threeman mine sites show that acidic...
Satellite remotely-sensed land surface parameters and their climatic effects for three metropolitan regions
George Xian
2008, Advances in Space Research (41) 1861-1869
By using both high-resolution orthoimagery and medium-resolution Landsat satellite imagery with other geospatial information, several land surface parameters including impervious surfaces and land surface temperatures for three geographically distinct urban areas in the United States – Seattle, Washington, Tampa Bay, Florida, and Las Vegas, Nevada, are obtained. Percent impervious surface...
Assessing habitat use by breeding Great Blue Herons (Ardea herodias) on the Upper Mississippi River, USA
E.M. Kirsch, B. Ickes, D.A. Olsen
2008, Waterbirds (31) 252-267
Approximately 7,610 to 3,175 pairs of Great Blue Herons (Ardea herodias) nested along 420 river km of the Upper Mississippi River (UMR) from 1993 to 2003. Numbers declined precipitously in the mid-1990s stabilizing somewhat in the early 2000s. The average number of nests in colonies was 349 (SD =...
Data error and highly parameterized groundwater models
M. C. Hill
2008, Conference Paper
Strengths and weaknesses of highly parameterized models, in which the number of parameters exceeds the number of observations, are demonstrated using a synthetic test case. Results suggest that the approach can yield close matches to observations but also serious errors in system representation. It is proposed that avoiding the difficulties...
Modeling potential habitats for alien species Dreissena polymorpha in continental USA
Li Mingyang, Ju Yunwei, Sunil Kumar, Thomas J. Stohlgren
2008, Acta Ecologica Sinica (28) 4253-4258
The effective measure to minimize the damage of invasive species is to block the potential invasive species to enter into suitable areas. 1864 occurrence points with GPS coordinates and 34 environmental variables from Daymet datasets were gathered, and 4 modeling methods, i.e., Logistic Regression (LR), Classification and Regression Trees (CART),...
Extreme changes in stable hydrogen isotopes and precipitation characteristics in a landfalling Pacific storm
T.B. Coplen, P.J. Neiman, A.B. White, J.M. Landwehr, F.M. Ralph, M. D. Dettinger
2008, Geophysical Research Letters (35)
With a new automated precipitation collector we measured a remarkable decrease of 51??? in the hydrogen isotope ratio (?? 2H) of precipitation over a 60-minute period during the landfall of an extratropical cyclone along the California coast on 21 March 2005. The rapid drop in ??2H occurred as precipitation generation...
