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Page 2038, results 50926 - 50950

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Could mangroves be Tampa Bay's next cash crop?
Matthew Cimitile
2008, Bay Soundings
Obviously, no one is recommending cutting down mangroves to sell, but environmental managers are working toward putting a price tag on the benefits they provide to help ensure that they are protected. Though the process is just beginning here, estimates from studies in other locations indicate that the 15,000 acres...
Range expansion of the Mayan cichlid, cichlasoma urophthalmus (pisces, cichlidae), above 28°N in Florida
R. Paperno, R. Ruiz-Carus, J.M. Krebs, C.C. McIvor
2008, Florida Scientist (71) 293-304
Introduced exotic species are a well-recognized problem in Florida's subtropical ecosystems. The presence of the exotic Mayan cichlid (Cichlasoma urophthalmus) was first confirmed in Florida in 1983, when numerous individuals were found in the northeastern Florida Bay. Since then, this species has continued to expand its range northward. The capture,...
Controls on late Quaternary coral reefs of the Florida Keys
Barbara H. Lidz, Eugene A. Shinn, J. Harold Hudson, Multer H. Gray, Robert B. Halley, Daniel M. Robbin
2008, Book chapter, Coral reefs of the USA
The Florida Keys is an arcuate, densely populated, westward-trending island chain at the south end of a karstic peninsular Florida Platform (Enos and Perkins 1977; Shinn et al. 1996; Kindinger el al. 1999, 2000). The "keys: mark the southernmost segment of the Atlantic continental margin of the United States. The...
Cenozoic evolution of the abrupt Colorado Plateau–Basin and Range boundary, northwest Arizona: A tale of three basins, immense lacustrine-evaporite deposits, and the nascent Colorado River
J. E. Faulds, Keith A. Howard, E. M. Duebendorfer
E. M. Duebendorfer, E.I. Smith, editor(s)
2008, Book chapter, Field Guide to Plutons, Volcanoes, Faults, Reefs, Dinosaurs, and Possible Glaciation in Selected Areas pf Arizona, California, and Nevada
In northwest Arizona, the relatively unextended Colorado Plateau gives way abruptly to the highly extended Colorado River extensional corridor within the Basin and Range province along a system of major west-dipping normal faults, including the Grand Wash fault...
Recovering endemic plants of the Channel Islands
Kathryn McEachern
2008, Endangered Species Bulletin (33) 40-43
At the California Channel Islands, off the state’s southern coast, cold waters from the north mix with warmer waters from the south. Each of the eight Channel Islands, which were never connected to the mainland, developed unique floras as colonizing plants adapted to their new island homes. This part of...
Total mercury and methylmercury in Indiana streams, August 2004-September 2006
Amanda L. Ulberg, Martin R. Risch
2008, Scientific Investigations Report 2008-5176
Total mercury and methylmercury were determined by use of low (subnanogram per liter) level analytical methods in 225 representative water samples collected following ultraclean protocols at 25 Indiana monitoring stations in a statewide network, on a seasonal schedule, August 2004-September 2006. The highest unfiltered total mercury concentrations were at six...
Linking soil organic matter dynamics and erosion-induced terrestrial carbon sequestration at different landform positions
Asmeret Asefaw Berhe, Jennifer W. Harden, Margaret S. Torn, John Harte
2008, Journal of Geophysical Research Biogeosciences (113)
Recently, the potential for terrestrial carbon (C) sequestration by soil erosion and deposition has received increased interest. Erosion and deposition constitute a sink for atmospheric carbon dioxide relative to a preerosional state or a noneroding scenario, if the posterosion watershed C balance is increased due to (1) partial replacement of...
Temporal Geochemistry Data from Five Springs in the Cement Creek Watershed, San Juan County, Colorado
Raymond H. Johnson, Laurie Wirt, Kenneth J. Leib
2008, Open-File Report 2007-1249
Temporal data from five springs in the Cement Creek watershed, San Juan County, Colorado provide seasonal geochemical data for further research in the formation of ferricretes. In addition, these data can be used to help understand the ground-water flow system. The resulting data demonstrate the difficulty in gathering reliable seasonal...
Comparison of Atmospheric Deposition Among Three Sites In and Near the Flat Tops Wilderness Area, Colorado, 2003-2005
George P. Ingersoll, Donald H. Campbell, M. Alisa Mast
2008, Scientific Investigations Report 2008-5229
Atmospheric deposition was monitored for ammonium, nitrate, and sulfate concentrations and precipitation amounts in the Flat Tops Wilderness Area of northwestern Colorado at Ned Wilson Lake beginning in 1984 to detect changes that might result from future emissions associated with development of oil-shale resources in northwestern Colorado. Renewed monitoring, by...
Electrical Resistivity and Seismic Surveys at the Nevada Test Site, Nevada, April 2007
Seth S. Haines, Bethany L. Burton, Donald S. Sweetkind, Theodore H. Asch
2008, Open-File Report 2008-1368
In April 2007, the USGS collected direct-current (DC) electrical resistivity data and shear- (S) and compressional- (P) wave seismic data to provide new detail of previously mapped, overlapping fault splays at two administrative areas in the Nevada Test Site (NTS). In NTS Area 7, we collected two-dimensional DC resistivity data...
Archive of digitized analog boomer seismic reflection data collected from Lake Pontchartrain, Louisiana, to Mobile Bay, Alabama, during cruises onboard the R/V ERDA-1, June and August 1992
Jordan M. Sanford, Arnell S. Harrison, Dana S. Wiese, James G. Flocks
2008, Data Series 370
In June and August of 1992, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the shallow geologic framework from Lake Pontchartrain, Louisiana, to Mobile Bay, Alabama. This work was conducted onboard the Argonne National Laboratory's R/V ERDA-1 as part of the Mississippi/Alabama Pollution Project. This report is part...
Environmental settings of selected streams sampled for mercury in Oregon, Wisconsin, and Florida, 2002-06
Amanda H. Bell, Michelle A. Lutz
2008, Open-File Report 2008-1277
From 2002 through 2006, the U.S. Geological Survey National Water-Quality Assessment Program conducted studies investigating mercury biogeochemistry and food-web bioaccumulation in eight streams from three distinct geographic areas of the United States. These streams varied greatly in environmental characteristics, including land-cover, hydrologic, climatic, and chemical characteristics. They ranged from a...
Geology of the Southern Appalachian Mountains
Sandra H. B. Clark
2008, Scientific Investigations Map 2830
The Southern Appalachian Mountains includes the Blue Ridge province and parts of four other physiographic provinces. The Blue Ridge physiographic province is a high, mountainous area bounded by several named mountain ranges (including the Unaka Mountains and the Great Smoky Mountains) to the northwest, and the Blue Ridge Mountains to...
Enhanced Sidescan-Sonar Imagery Offshore of Southeastern Massachusetts
Lawrence J. Poppe, Kate Y. McMullen, S. Jeffress Williams, Seth D. Ackerman, K.A. Glomb, N.A. Forfinski
2008, Open-File Report 2008-1196
The U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), and Massachusetts Office of Coastal Zone Management (CZM) have been working cooperatively to map and study the coastal sea floor. The sidescan-sonar imagery collected during NOAA hydrographic surveys has been included as part of these studies. However, the original...
Temporal Differences in Flow Depth and Velocity Distributions and Hydraulic Microhabitats Near Bridges of the Lower Platte River, Nebraska, 1934-2006
Daniel Ginting, Ronald B. Zelt
2008, Scientific Investigations Report 2008-5054
As part of a collaborative study of the cumulative impacts on stream and riparian ecology of water and channel management practices in the lower Platte River, Nebraska, this report describes a study by the U.S. Geological Survey in cooperation with the Lower Platte South Natural Resources District that summarizes: (1)...
Mapping vulnerability to disasters in Latin America and the Caribbean, 1900–2007
Miriam C. Maynard-Ford, Emily C. Phillips, Peter G. Chirico
2008, Open-File Report 2008-1294
The vulnerability of a population and its infrastructure to disastrous events is a factor of both the probability of a hazardous event occurring and the community's ability to cope with the resulting impacts. Therefore, the ability to accurately identify vulnerable populations and places in order to prepare for future hazards...
Geologic map of the Fredonia 30' x 60' quadrangle, Mohave and Coconino counties, northern Arizona
George H. Billingsley, Susan S. Priest, Tracey J. Felger
2008, Scientific Investigations Map 3035
This geologic map is the result of a cooperative effort of the U.S. Geological Survey, the National Park Service, the U.S. Forest Service, and the Bureau of Land Management (BLM) and the Kaibab-Paiute Tribe to provide a regional geologic database for resource management officials of all government and agencies, city...
Estimated use of water in South Dakota, 2005
Janet M. Carter, Kathleen M. Neitzert
2008, Scientific Investigations Report 2008-5216
During 2005, withdrawals from ground-water and surface-water sources in South Dakota for the eight categories of offstream use totaled about 500 million gallons per day (Mgal/d). Of total withdrawals, about 271 Mgal/d was withdrawn from ground water and about 230 Mgal/d was withdrawn from surface water. The largest use of...
State and regional water-quality characteristics and trophic conditions of Michigan's inland lakes, 2001-2005
L. M. Fuller, R. J. Minnerick
2008, Scientific Investigations Report 2008-5188
The U.S. Geological Survey and the Michigan Department of Environmental Quality are jointly monitoring selected water-quality constituents of inland lakes through 2015 as part of Michigan’s Lake Water Quality Assessment program. During 2001–2005, 433 lake basins from 364 inland lakes were monitored for baseline water-quality conditions and trophic status. This...
Hydrogeologic Framework of Onslow County, North Carolina, 2008
Jason M. Fine
2008, Scientific Investigations Map 3055
The unconsolidated sediments that underlie the Onslow County area are composed of interlayered permeable and impermeable beds, which overlie the crystalline basement rocks. The aquifers, composed mostly of sand and limestone, are separated by confining units composed mostly of clay and silt. The aquifers from top to bottom are the...
Evaluation of four structural best management practices for highway runoff in Beaufort and Colleton Counties, South Carolina, 2005–2006
Kevin J. Conlon, Celeste A. Journey
2008, Scientific Investigations Report 2008-5150
From 2005 to 2006, the U.S. Geological Survey worked cooperatively with the South Carolina Department of Transportation in Beaufort and Colleton Counties, South Carolina, to assess the performance of four different structural devices that served as best management practices (BMPs). These structural devices were installed to mitigate the effects of...
Comments on potential geologic and seismic hazards affecting proposed liquefied natural gas site in Santa Monica Bay, California
Stephanie L. Ross, Homa J. Lee, Tom E. Parsons, Larry A. Beyer, David M. Boore, James E. Conrad, Brian D. Edwards, Michael A. Fisher, Arthur D. Frankel, Eric L. Geist, Kenneth W. Hudnut, Susan E. Hough, Robert E. Kayen, T.D. Lorenson, Nicolas Luco, Patricia A. McCrory, Mary McGann, Manuel Nathenson, Michael Nolan, Mark D. Petersen, Daniel J. Ponti, Charles L. Powell II, Holly F. Ryan, John C. Tinsley III, Chris J. Wills, Florence L. Wong, Jingping Xu
2008, Open-File Report 2008-1344
In a letter to the U.S. Geological Survey (USGS) dated March 25, 2008, Representative Jane Harman (California 36th district) requested advice on geologic hazards that should be considered in the review of a proposed liquefied natural gas (LNG) facility off the California coast in Santa Monica Bay. In 2004, the...
Ground-water quality data in the coastal Los Angeles Basin study unit, 2006: Results from the California GAMA Program
Timothy M. Mathany, Michael Land, Kenneth Belitz
2008, Data Series 387
Ground-water quality in the approximately 860 square-mile Coastal Los Angeles Basin study unit (CLAB) was investigated from June to November of 2006 as part of the Statewide Basin Assessment Project of the Ground-Water Ambient Monitoring and Assessment (GAMA) Program. The GAMA Statewide Basin Assessment was developed in response to the...
Protocol for Monitoring Fish Assemblages in Pacific Northwest National Parks
Samuel J. Brenkman, Patrick J. Connolly
2008, Techniques and Methods 2-A7
Rivers and streams that drain from Olympic, Mount Rainier, and North Cascades National Parks are among the most protected corridors in the lower 48 States, and represent some of the largest tracts of contiguous, undisturbed habitat throughout the range of several key fish species of the Pacific Northwest. These watersheds...
Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, May 2008
Sandra L. Kinnaman, Joann F. Dixon
2008, Scientific Investigations Map 3056
This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity for May 2008. Potentiometric contours are based on water-level measurements collected at 567 wells during the period May 6-May 27, near the end of the dry season. Some contours...