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Page 1806, results 45126 - 45150

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Occurrence of phosphorus in groundwater and surface water of northwestern Mississippi
Heather L. Welch, James A. Kingsbury, Richard H. Coupe
2010, Conference Paper, Proceedings from the 2010 Mississippi water resources conference
Previous localized studies of groundwater samples from the Mississippi River Valley alluvial (MRVA) aquifer have demonstrated that dissolved phosphorus concentrations in the aquifer are much higher than the national background concentration of 0.03 milligram per liter (mg/L) found in 400 shallow wells across the country. Forty-six wells screened in the...
The World Congress of Herpetology and Animal Conservation: Excerpts from the 6th World Congress
T.W.J. Garner, J.-M. Hero, R. Jehle, F. Kraus, E. Muths, R.N. Reed, R.C. Vogt, W. Hodl
2010, Animal Conservation (13) 1-2
The World Congress of Herpetology (WCH, http://www.worldcongressofherpetology.org/) is a relatively young organization as far as august herpetological societies go. It was formed in 1982, the year of the 25th meeting of the Society for the Study of Amphibians and Reptiles (founded in 1958), which itself is a relative youngster when...
An analysis of the risk of introduction of additional strains of the rust puccinia psidii Winter ('Ohi'a Rust) to Hawai'i
Lloyd Loope, Anne Marie La Rosa
2010, Open-File Report 2008-1008
In April 2005, the rust fungus Puccinia psidii (most widely known as guava rust or eucalyptus rust) was found in Hawai'i. This was the first time this rust had been found outside the Neotropics (broadly-defined, including subtropical Florida, where the rust first established in the 1970s). First detected on a...
Bathymetric surveys at highway bridges crossing the Missouri River in Kansas City, Missouri, using a multibeam echo sounder, 2010
Richard J. Huizinga
2010, Scientific Investigations Report 2010-5207
Bathymetric surveys were conducted by the U.S. Geological Survey, in cooperation with the Missouri Department of Transportation, on the Missouri River in the vicinity of nine bridges at seven highway crossings in Kansas City, Missouri, in March 2010. A multibeam echo sounder mapping system was used to obtain channel-bed elevations...
Quantity and sources of base flow in the San Pedro River near Tombstone, Arizona
Jeffrey R. Kennedy, Bruce Gungle
2010, Scientific Investigations Report 2010-5200
Base flow in the upper San Pedro River at the gaging station (USGS station 09471550) near Tombstone, Arizona, is an important factor in the long-term sustainability of the river's riparian ecosystem. Most base flow occurs during the non-summer months (typically, from November to May), because evapotranspiration (ET) is greater...
Preliminary assessment of trends in static water levels in bedrock wells in New Hampshire, 1984 to 2007
Joseph D. Ayotte, Brandon M. Kernen, David R. Wunsch, Denise M. Argue, Derek S. Bennett, Thomas J. Mack
2010, Open-File Report 2010-1189
Analysis of nearly 60,000 reported values of static water level (SWL, as depth below land surface) in bedrock wells in New Hampshire, aggregated on a yearly basis, showed an apparent deepening of SWL of about 13 ft (4 m) over the period 1984–2007. Water-level data were one-time measurements at each...
Impacts of historical mining in the Coeur d'Alene River Basin
Laurie S. Balistrieri, Stephen E. Box, Arthur A. Bookstrom, Robert L. Hooper, J. Brian Mahoney
2010, Bulletin 2191-6
Mining began in the late 1880s in the Coeur d'Alene mining district in northern Idaho (fig. 1). Although only two mines, the Galena and Lucky Friday, currently are operating, more than 90 historical mines exist in this region (Bennett and others, 1989)....
Introduction to pathways of metal transfer from mineralized sources to biorecptors
Roger P. Ashley, Elizabeth A. Bailey, Laurie S. Balistrieri, Andrea L. Foster, Larry P. Gough, Floyd Gray, Randolph A. Koski, James J. Rytuba, Robert R. Seal II, Kathleen S. Smith, Lisa L. Stillings, Richard B. Wanty
2010, Bulletin 2191-1
Since 1995, the Mineral Resources Program of the U.S. Geological Survey has funded a number of studies in the western United States that address environmental issues associated with mineral deposits....
Seamounts and ferromanganese crusts within and near the U.S. EEZ off California - Data for RV Farnella cruise F7-87-SC
James R. Hein, Jane A. Reid, Tracey A. Conrad, Rachel E. Dunham, David A. Clague, Marjorie S. Schulz, Alice S. Davis
2010, Open-File Report 2010-1069
The purpose of this report is to present and briefly describe ship-board and laboratory data for a U.S. Geological Survey (USGS) research cruise aboard the RV Farnella that took place December 3-21, 1987 (cruise F7-87-SC). The purpose of the cruise was to survey seamounts and ferromanganese crusts within and near...
Trip report: pilot study of factors linking watershed function and coastal ecosystem health in American Samoa
Carter T. Atkinson, Arthur C. Medeiros
2010, Open-File Report 2006-1383
Coral reef resources in the territory of American Samoa face significant problems from overfishing, non-point source pollution, global warming, and continuing population growth and development. The islands are still relatively isolated relative to other parts of the Pacific and have managed to avoid some of the more devastating invasive species...
Geology highlights for Ride the Rockies 2010
J. L. Slate, Amber Hess, D.R. Van Sistine
2010, General Information Product 108
The author provides a brief description of the geology along the route for each day of the ride, from June 13 through June 19, 2010. Ride the Rockies begins in Grand Junction, with stops in Delta, Ouray, Durango, Pagosa Springs, Alamosa, and ends in Salida, Colorado. A small, generalized geologic...
Lithologic and physicochemical properties and hydraulics of flow in and near the freshwater/saline-water transition zone, San Antonio segment of the Edwards aquifer, south-central Texas, based on water-level and borehole geophysical log data, 1999-2007
Rebecca B. Lambert, Andrew G. Hunt, Gregory P. Stanton, Michael B. Nyman
2010, Scientific Investigations Report 2010-5122
The freshwater zone of the San Antonio segment of the Edwards aquifer in south-central Texas (hereinafter, the Edwards aquifer) is bounded to the south and southeast by a zone of transition from freshwater to saline water (hereinafter, the transition zone). The boundary between the two zones is the freshwater/saline-water interface...
Postcard for Ride the Rockies 2010
D.R. Van Sistine
2010, General Information Product 107
2010 Ride The Rockies route on shaded-relief mosaic of USGS Landsat 7 satellite images, southwestern Colorado....
Summary of Bed-Sediment Measurements Along the Platte River, Nebraska, 1931-2009
P.J. Kinzel, J.T. Runge
2010, Fact Sheet 2010-3087
Rivers are conduits for water and sediment supplied from upstream sources. The sizes of the sediments that a river bed consists of typically decrease in a downstream direction because of natural sorting. However, other factors can affect the caliber of bed sediment including changes in upstream water-resource development, land use,...
Poster for Ride the Rockies 2010
J. L. Slate, Amber Hess, D.R. Van Sistine
2010, General Information Product 109
To download other USGS materials related to Ride The Rockies, go to http://www.cr.usgs.gov/rtr/index.html...
Accumulation of current-use and organochlorine pesticides in crab embyros from northern California, USA
K.L. Smalling, S. Morgan, Kathryn Kuivila
2010, Environmental Toxicology and Chemistry (29) 2593-2599
Invertebrates have long been used as resident sentinels for assessing ecosystem health and productivity. The shore crabs, Hemigrapsus oregonensis and Pachygrapsus crassipes, are abundant in estuaries and beaches throughout northern California, USA and have been used as indicators of habitat conditions in several salt marshes. The overall objectives of the...
Very rapid geomagnetic field change recorded by the partial remagnetization of a lava flow
Scott W. Bogue, Jonathan M.G. Glen
2010, Geophysical Research Letters (37)
A new paleomagnetic result from a lava flow with a distinctive, two-part remanence reinforces the controversial hypothesis that geomagnetic change during a polarity reversal can be much faster than normal. The 3.9-m-thick lava (“Flow 20”) is exposed in the Sheep Creek Range (north central Nevada) and was erupted during a...
Woodpecker densities in the big woods of Arkansas
J.D. Luscier, David G. Krementz
2010, Journal of Fish and Wildlife Management (1) 102-110
Sightings of the now-feared-extinct ivory-billed woodpecker Campephilus principalis in 2004 in the Big Woods of Arkansas initiated a series of studies on how to best manage habitat for this endangered species as well as all woodpeckers in the area. Previous work suggested that densities of other woodpeckers, particularly pileated Dryocopus...
Biological communities in San Francisco Bay track large‐scale climate forcing over the North Pacific
James E. Cloern, Kathryn Hieb, Teresa Jacobson, Bruno Sanso, Emanuele Di Lorenzo, Mark T. Stacey, John L. Largier, Wendy Meiring, William T Peterson, Thomas M. Powell, Monika Winder, Alan D. Jassby
2010, Geophysical Research Letters (37)
Long‐term observations show that fish and plankton populations in the ocean fluctuate in synchrony with large‐scale climate patterns, but similar evidence is lacking for estuaries because of shorter observational records. Marine fish and invertebrates have been sampled in San Francisco Bay since 1980 and exhibit large, unexplained population changes including...
Foraging proficiency during the nonbreeding season of a specialized forager: are juvenile American Oystercatchers "bumble-beaks" compared to adults?
Christine E. Hand, Felicia J. Sanders, Patrick G.R. Jodice
2010, Condor (112) 670-675
In many species, immature individuals are less proficient at foraging than are adults, and this difference may be especially critical during winter when survival can be at its minimum. We investigated the foraging proficiency of adult and immature American Oystercatchers (Haematopus palliatus) during the nonbreeding season. Oystercatchers forage on prey...
Assessment and monitoring of recreation impacts and resource conditions on mountain summits: Examples from the Northern Forest, USA
Christopher A. Monz, Jeffrey L. Marion, Kelly A. Goonan, Robert E. Manning, Jeremy Wimpey, Christopher Carr
2010, Mountain Research and Development (30) 332-343
Mountain summits present a unique challenge to manage sustainably: they are ecologically important and, in many circumstances, under high demand for recreation and tourism activities. This article presents recent advances in the assessment of resource conditions and visitor disturbance in mountain summit environments, by drawing on examples from a multiyear,...
Thermal constraints to the sporogonic development and altitudinal distribution of avian malaria Plasmodium relictum in Hawai'i
Dennis A. LaPointe, M.L. Goff, Carter T. Atkinson
2010, Journal of Parasitology (96) 318-324
More than half of the Hawaiian honeycreepers (Drepanidinae) known from historical records are now extinct. Introduced mosquito-borne disease, in particular the avian malaria Plasmodium relictum, has been incriminated as a leading cause of extinction during the 20th century and a major limiting factor in the recovery of remaining species populations....
Evaluation of the extent of contamination caused by historical mining in catchments of central Colorado
Stan E. Church, David L. Fey, Richard B. Wanty, Travis S. Schmidt, T. L. Klein, Barnaby W. Rockwell, Carma A. San Juan
2010, Conference Paper, Geological Society of America Denver Annual Meeting
The U.S. Geological Survey conducted an assessment of stream water and sediment quality in central Colorado, an area of about 54,000 km2. The study area is focused on small tributary catchments in the Rocky Mountains. The Colorado Mineral belt, a northeast-trending mineralized zone that experienced base- and precious-metal mining at...
ARCTOS: a relational database relating specimens, specimen-based science, and archival documentation
Gordon H. Jarrell, Cindy A. Ramotnik, D.L. McDonald
2010, Conference Paper, Geological Society of America Annual Meeting
Data are preserved when they are perpetually discoverable, but even in the Information Age, discovery of legacy data appropriate to particular investigations is uncertain. Secure Internet storage is necessary but insufficient. Data can be discovered only when they are adequately described, and visibility increases markedly if the data are related...