Geographic variation in the plumage coloration of willow flycatchers Empidonax traillii
Eben H. Paxton, Mark K. Sogge, Thomas J. Koronkiewicz, Mary Anne McLeod, Tad C. Theimer
2010, Journal of Avian Biology (41) 128-138
The ability to identify distinct taxonomic groups of birds (species, subspecies, geographic races) can advance ecological research efforts by determining connectivity between the non-breeding and breeding grounds for migrant species, identifying the origin of migrants, and helping to refine boundaries between subspecies or geographic races. Multiple methods are available to...
Developmental changes in serum androgen levels of Eastern Screech-Owls (Megascops asio)
Corinne P. Kozlowski, D. Caldwell Hahn
2010, Wilson Journal of Ornithology (122) 755-761
We studied androgen production during development in nestling Eastern Screech-Owls (Megascops asio) and hypothesized that gender and hatch order might influence serum levels of testosterone and androstenedione. Testosterone levels were highest immediately after hatching and declined significantly in the 4 weeks leading to fledging. The average level of testosterone for...
Contribution of PAHs from coal-tar pavement sealcoat and other sources to 40 U.S. lakes
Peter C. Van Metre, Barbara Mahler
2010, Science of the Total Environment (409) 334-344
Contamination of urban lakes and streams by polycyclic aromatic hydrocarbons (PAHs) has increased in the United States during the past 40 years. We evaluated sources of PAHs in post-1990 sediments in cores from 40 lakes in urban areas across the United States using a contaminant mass-balance receptor model and including...
A review of sediment budget imbalances along Fire Island, New York: Can nearshore geologic framework and patterns of shoreline change explain the deficit?
Cheryl J. Hapke, Erika E. Lentz, Paul T. Gayes, Clayton A. McCoy, Rachel E. Henderson, William C. Schwab, S. Jeffress Williams
2010, Journal of Coastal Research (26) 510-522
Sediment budget analyses conducted for annual to decadal timescales report variable magnitudes of littoral transport along the south shore of Long Island, New York. It is well documented that the primary transport component is directed alongshore from east to west, but relatively little information has been reported concerning the directions...
A rapid method for the measurement of sulfur hexafluoride (SF6), trifluoromethyl sulfur pentafluoride (SF5CF3), and Halon 1211 (CF2ClBr) in hydrologic tracer studies
Eurybiades Busenberg, Niel Plummer
2010, Geochemistry, Geophysics, Geosystems (11)
A rapid headspace method for the simultaneous laboratory determination of intentionally introduced hydrologic tracers, sulfur hexafluoride (SF6), trifluoromethyl sulfur pentafluoride (SF5CF3), Halon 1211 (CF2ClBr), and other halocarbons in water and gases is described. The high sensitivity of the procedure allows for introduction of minimal tracer mass (a few grams) into...
Beyond Colorado's Front Range - A new look at Laramide basin subsidence, sedimentation, and deformation in north-central Colorado
James C. Cole, James H. Trexler Jr., Patricia H. Cashman, Ian M. Miller, Ralph R. Shroba, Michael A. Cosca, Jeremiah B. Workman
2010, Book chapter, GSA field guide: Through the generations
This field trip highlights recent research into the Laramide uplift, erosion, and sedimentation on the western side of the northern Colorado Front Range. The Laramide history of the North Park-Middle Park basin (designated the Colorado Headwaters Basin in this paper) is distinctly different from that of the Denver basin on...
A long-term vegetation history of the Mojave-Colorado Desert ecotone at Joshua Tree National Park
Camille A. Holmgren, Julio L. Betancourt, Kate A. Rylander
2010, Journal of Quaternary Science (25) 222-236
Thirty-eight dated packrat middens were collected from upper desert (930–1357 m) elevations within Joshua Tree National Park near the ecotone between the Mojave Desert and Colorado Desert, providing a 30 ka record of vegetation change with remarkably even coverage for the last 15 ka. This record indicates that vegetation was relatively stable, which...
Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 2009
Stephen E. Curtin, David C. Andreasen, Andrew W. Staley
2010, Open-File Report 2010-1201
This report presents a map showing the potentiometric surface of the Aquia aquifer in the Aquia Formation of Paleocene age in Southern Maryland during September 2009. The map is based on water-level measurements in 82 wells. The highest measured water level was 48 feet above sea level near the northern...
EAARL coastal topography-Cape Hatteras National Seashore, North Carolina, post-Nor'Ida, 2009: first surface
J.M. Bonisteel-Cormier, Amar Nayegandhi, J. C. Brock, C. W. Wright, D.B. Nagle, Xan Fredericks, Sara Stevens
2010, Data Series 564
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project provides highly detailed...
EAARL Coastal Topography-Fire Island National Seashore, New York, Post-Nor'Ida, 2009
Amar Nayegandhi, Saisudha Vivekanandan, J. C. Brock, C. W. Wright, D.B. Nagle, J.M. Bonisteel-Cormier, Xan Fredericks, Sara Stevens
2010, Data Series 558
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project...
EAARL Coastal Topography-Eastern Louisiana Barrier Islands, Post-Hurricane Gustav, 2008: First Surface
J.M. Bonisteel-Cormier, Amar Nayegandhi, C. W. Wright, A. H. Sallenger, J. C. Brock, D.B. Nagle, Saisudha Vivekanandan, Xan Fredericks
2010, Data Series 560
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and...
EAARL Coastal Topography-Sandy Hook Unit, Gateway National Recreation Area, New Jersey, Post-Nor'Ida, 2009
Amar Nayegandhi, Saisudha Vivekanandan, J. C. Brock, C. W. Wright, J.M. Bonisteel-Cormier, D.B. Nagle, E.S. Klipp, Sara Stevens
2010, Data Series 557
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI. This project...
EAARL Coastal Topography and Imagery-Assateague Island National Seashore, Maryland and Virginia, Post-Nor'Ida, 2009
J.M. Bonisteel-Cormier, Amar Nayegandhi, J. C. Brock, C. W. Wright, D.B. Nagle, E.S. Klipp, Saisudha Vivekanandan, Xan Fredericks, Sara Stevens
2010, Data Series 559
These remotely sensed, geographically referenced color-infrared (CIR) imagery and elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Park Service (NPS), Northeast Coastal and Barrier Network,...
EAARL Coastal Topography-Maryland and Delaware, Post-Nor'Ida, 2009
J.M. Bonisteel-Cormier, Saisudha Vivekanandan, Amar Nayegandhi, A. H. Sallenger, C. W. Wright, J. C. Brock, D.B. Nagle, E.S. Klipp
2010, Data Series 562
These remotely sensed, geographically referenced elevation measurements of lidar-derived bare-earth (BE) and first-surface (FS) topography datasets were produced by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL. This project provides highly detailed and accurate datasets of a portion of the eastern Maryland and...
EAARL Coastal Topography-Eastern Florida, Post-Hurricane Jeanne, 2004: First Surface
Xan Fredericks, Amar Nayegandhi, J.M. Bonisteel-Cormier, C. W. Wright, A. H. Sallenger, J. C. Brock, E.S. Klipp, D.B. Nagle
2010, Data Series 561
These remotely sensed, geographically referenced elevation measurements of lidar-derived first-surface (FS) topography datasets were produced collaboratively by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and...
Geologic map of the Bartlett Springs Fault Zone in the vicinity of Lake Pillsbury and adjacent areas of Mendocino, Lake, and Glenn Counties, California
Henry N. Ohlin, Robert J. McLaughlin, Barry C. Moring, Thomas L. Sawyer
2010, Open-File Report 2010-1301
The Lake Pillsbury area lies in the eastern part of the northern California Coast Ranges, along the east side of the transform boundary between the Pacific and North American plates (fig. 1). The Bartlett Springs Fault Zone is a northwest-trending zone of faulting associated with this eastern part of the...
Preliminary Assessment of the Hydrogeology and Groundwater Availability in the Metamorphic and Siliciclastic Fractured-Rock Aquifer Systems of Warren County, Virginia
David L. Nelms, Roger M. Moberg
2010, Scientific Investigations Report 2010-5190
Expanding development and the prolonged drought from 1999 to 2002 drew attention to the quantity and sustainability of the groundwater resources in Warren County, Virginia. The groundwater flow systems of the county are complex and are controlled by the extremely folded and faulted geology that underlies the county. A study...
Current distribution of North American river otters in central and eastern Oklahoma, with seven new county records
Dominic A. Barrett, David M. Leslie Jr.
2010, Occasional Papers of the Museum at Texas Tech University (294) 1-13
In 1984 and 1985, the Oklahoma Department of Wildlife Conservation reintroduced North American river otters (Lontra canadensis) from coastal Louisiana into eastern Oklahoma. Those reintroductions and immigration from Arkansas and possibly northeastern Texas allowed river otters to become reestablished in eastern Oklahoma. Our goals were to determine the contemporary distribution...
Effect of historic land cover change on runoff curve number estimation in Iowa
Loren L. Wehmeyer, Frank H. Weirich
2010, Journal of Hydrologic Engineering (15) 692-695
Within three decades of European-descended settlers arriving in Iowa, much of the land cover across the state was transformed from prairie and forest to farmland, patches of forest, and urbanized areas. Between 1832 and 1859, the General Land Office surveyed the state of Iowa to aid in the disbursement of...
Hydrogeology of the Markagunt Plateau, Southwestern Utah
Lawrence E. Spangler
2010, Book chapter, UGA Guidebook
The Markagunt Plateau, in southwestern Utah, lies at an altitude of about 9,500 feet and is capped primarily by Quaternary-age basalt that overlies Eocene-age freshwater limestone of the Claron Formation. Over large parts of the Markagunt Plateau, dissolution of the Claron limestone and subsequent collapse of the overlying basalt have...
Eruptions of Hawaiian volcanoes—Past, present, and future
Katherine M. Mulliken, Robert I. Tilling, Donald A. Swanson
2010, General Information Product 117
Viewing an erupting volcano is a memorable experience, one that has inspired fear, superstition, worship, curiosity, and fascination since before the dawn of civilization. In modern times, volcanic phenomena have attracted intense scientific interest because they provide the key to understanding processes that have created and shaped more than 80...
Inside the crater, outside the crater: Stratigraphic details of the margin of the Chesapeake Bay impact structure, Virginia, USA
Lucy E. Edwards, David S. Powars, J. Wright Horton, Jr., Gregory Gohn, Jean Self-Trail, R. J. Litwin
2010, Book chapter
Two cores at the outer margin of the Chesapeake Bay impact structure show significant structural and depositional variations that illuminate its history. Detailed stratigraphy of the Watkins School core reveals that this site is outside the disruption boundary of the crater with respect to its lower part (nonmarine Cretaceous Potomac Formation), but just inside the...
Delaware Water Gap; a geology classroom
Jack B. Epstein
2010, Conference Paper, New York State Geological Association 82nd annual meeting; field trip guidebook
No abstract available....
Erosion of tilted fault blocks and deposition of coarse sediments in half-graben basins during late stages of extension: Gold Butte area, Basin and Range Province
Keith A. Howard, Sue Beard, M. A. Kuntz, Michael J. Kunk, Andrei M. Sarna-Wojcicki, M. E. Perkins, Ivo Lucchitta
2010, GSA Special Papers (463) 147-170
The provenance and stratigraphic architecture of basin-filling Miocene sediments around the Gold Butte area, southern Nevada, and adjacent highlands record the erosion of fault blocks that progressively tilted during extension. This study focuses especially on upper Miocene correlatives of the red sandstone unit and the Muddy Creek Formation that were...
Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America
Mark A. Engle, Michael T. Tate, David P. Krabbenhoft, James J Schauer, Allan Kolker, James B. Shanley, Michael Bothner
2010, Journal of Geophysical Research (115)
This study presents >5 cumulative years of tropospheric mercury (Hg) speciation measurements, over the period of 2003–2009, for eight sites in the central and eastern United States and one site in coastal Puerto Rico. The purpose of this research was to identify local and regional processes that impact Hg speciation...
