Freshwater mussels (Unionidae) in the headwaters of Chipola River, Houston County, Alabama
J.T. Garner, S.W. McGregor, T.A. Tarpley, M.L. Buntin
2009, Southeastern Naturalist (8) 687-694
Big and Cowarts creeks lie in extreme southeastern Alabama and form the headwaters of Chipola River. Qualitative and quantitative sampling for freshwater mussels in these reaches during 2006 and 2007 revealed an intact fauna, relative to historical reports. A cumulative total of 17 species, including federally protected Elliptio chipolaensis (Chipola...
Integrating disparate lidar datasets for a regional storm tide inundation analysis of Hurricane Katrina
Jason M. Stoker, Dean J. Tyler, D. Phil Turnipseed, K. Van Wilson Jr., Michael J. Oimoen
2009, Journal of Coastal Research (Special Issue 53) 66-72
Hurricane Katrina was one of the largest natural disasters in U.S. history. Due to the sheer size of the affected areas, an unprecedented regional analysis at very high resolution and accuracy was needed to properly quantify and understand the effects of the hurricane and the storm tide. Many disparate sources...
Adaptation of farming practices could buffer effects of climate change on northern prairie wetlands
R.A. Voldseth, W.C. Johnson, G.R. Guntenspergen, T. Gilmanov, B.V. Millett
2009, Wetlands (29) 635-647
Wetlands of the Prairie Pothole Region of North America are vulnerable to climate change. Adaptation of farming practices to mitigate adverse impacts of climate change on wetland water levels is a potential watershed management option. We chose a modeling approach (WETSIM 3.2) to examine the effects of changes in climate...
River restoration strategies in channelized, low-gradient landscapes of West Tennessee, USA
D.P. Smith, T.H. Diehl, L. A. Turrini-Smith, J. Maas-Baldwin, Z. Croyle
2009, Special Paper of the Geological Society of America 215-229
West Tennessee has a complex history of watershed disturbance, including agricultural erosion, channelization, accelerated valley sedimentation, and the removal and reestablishment of beaver. Watershed management has evolved from fl oodplain drainage via pervasive channelization to include local drainage canal maintenance and local river restoration. Many unmaintained canals are undergoing excessive...
Delayed tree mortality in the Atchafalaya Basin of Southern Louisiana following Hurricane Andrew
B. D. Keeland, L.E. Gorham
2009, Wetlands (29) 101-111
Hurricanes can damage trees in forested wetlands, and the potential for mortality related to these storms exists due to the effects of tree damage over time. In August 1992, Hurricane Andrew passed through the forested wetlands of southern Louisiana with winds in excess of 225 kph. Although more than 78...
Effects of Hurricane Katrina on the forest structure of taxodium distichum swamps of the Gulf Coast, USA
B.A. Middleton
2009, Wetlands (29) 80-87
Hurricane Katrina pushed mixed Taxodium distichum forests toward a dominance of Taxodium distichum (baldcypress) and Nyssa aquatica (water tupelo) because these species had lower levels of susceptibility to wind damage than other woody species. This study documents the volume of dead versus live material of woody trees and shrubs of...
Physical property data from the ICDP-USGS Eyreville cores A and B, Chesapeake Bay impact structure, Virginia, USA, acquired using a multisensor core logger
H. A. Pierce, J.B. Murray
2009, Special Paper of the Geological Society of America 165-179
The International Continental Scientific Drilling Program (ICDP) and the U.S. Geological Survey (USGS) drilled three core holes to a composite depth of 1766 m within the moat of the Chesapeake Bay impact structure. Core recovery rates from the drilling were high (??90%), but problems with core hole collapse limited the...
Characteristics of Southern California coastal aquifer systems
B. D. Edwards, R. T. Hanson, E.G. Reichard, T.A. Johnson
2009, Special Paper of the Geological Society of America 319-344
Most groundwater produced within coastal Southern California occurs within three main types of siliciclastic basins: (1) deep (>600 m), elongate basins of the Transverse Ranges Physiographic Province, where basin axes and related fluvial systems strike parallel to tectonic structure, (2) deep (>6000 m), broad basins of the Los Angeles and...
Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2000: A stratified random approach
J. Carter, J.H. Merino, S.L. Merino
2009, Gulf of Mexico Science (27) 1-8
Estimates of submerged aquatic vegetative (SAV) along the U.S. Gulf of Mexico (Gulf) generally focus on seagrasses. In 2000, we attempted a synoptic survey of SAV in the mesohaline (5–20 ppt) zone of estuarine and nearshore areas of the northeastern Gulf. Areas with SAV were identified from existing aerial 1992...
Impacts of settlement, damming, and hydromanagement in two boreal lakes: A comparative paleolimnological study
C.A. Serieyssol, M.B. Edlund, L.W. Kallemeyn
2009, Journal of Paleolimnology (42) 497-513
Namakan Lake, located in shared border waters in northeastern Minnesota and northwestern Ontario, was subjected to several anthropogenic impacts including logging, damming, water-level manipulations, and perhaps climate change. We used paleolimnology to determine how these stressors impacted Namakan Lake in comparison to a control lake (Lac La Croix) that was...
Probabilistic tsunami hazard assessment at Seaside, Oregon, for near-and far-field seismic sources
F.I. Gonzalez, E.L. Geist, B. Jaffe, U. Kanoglu, H. Mofjeld, C.E. Synolakis, V.V. Titov, D. Areas, D. Bellomo, D. Carlton, T. Horning, J. Johnson, J. Newman, T. Parsons, R. Peters, C. Peterson, G. Priest, A. Venturato, J. Weber, F. Wong, A. Yalciner
2009, Journal of Geophysical Research C: Oceans (114)
The first probabilistic tsunami flooding maps have been developed. The methodology, called probabilistic tsunami hazard assessment (PTHA), integrates tsunami inundation modeling with methods of probabilistic seismic hazard assessment (PSHA). Application of the methodology to Seaside, Oregon, has yielded estimates of the spatial distribution of 100- and 500-year maximum tsunami amplitudes,...
Hydrogeologic structure underlying a recharge pond delineated with shear-wave seismic reflection and cone penetrometer data
S.S. Haines, Adam Pidlisecky, R. Knight
2009, Near Surface Geophysics (7) 329-339
With the goal of improving the understanding of the subsurface structure beneath the Harkins Slough recharge pond in Pajaro Valley, California, USA, we have undertaken a multimodal approach to develop a robust velocity model to yield an accurate seismic reflection section. Our shear-wave reflection section helps us identify and map...
The Mono Arch, eastern Sierra region, California: Dynamic topography associated with upper-mantle upwelling?
A. S. Jayko
2009, International Geology Review (51) 702-722
A broad, topographic flexure localized east of and over the central and southern Sierra Nevada, herein named the Mono Arch, apparently represents crustal response to lithospheric and/or upper-mantle processes, probably dominated by mantle upwelling within the continental interior associated Pacific-North American plate-boundary deformation. This zone of flexure is identified through...
A new syringe pump apparatus for the retrieval and temporal analysis of helium in groundwaters and geothermal fluids
P.H. Barry, David R. Hilton, M.D. Tryon, K. M. Brown, J.T. Kulongoski
2009, Geochemistry, Geophysics, Geosystems (10)
We present details of a newly designed syringe pump apparatus for the retrieval and temporal analysis of helium (SPARTAH). The device is composed of a commercially available syringe pump connected to coils of Cu tubing, which interface the syringe and the groundwater or geothermal wellhead. Through test deployments at geothermal...
Metal stable isotopes in low-temperature systems: A primer
T.D. Bullen, A. Eisenhauer
2009, Elements (5) 349-352
Recent advances in mass spectrometry have allowed isotope scientists to precisely determine stable isotope variations in the metallic elements. Biologically infl uenced and truly inorganic isotope fractionation processes have been demonstrated over the mass range of metals. This Elements issue provides an overview of the application of metal stable isotopes...
Moon meteoritic seismic hum: Steady state prediction
P. Lognonne, M.L. Feuvre, C.L. Johnson, R.C. Weber
2009, Journal of Geophysical Research E: Planets (114)
We use three different statistical models describing the frequency of meteoroid impacts on Earth to estimate the seismic background noise due to impacts on the lunar surface. Because of diffraction, seismic events on the Moon are typically characterized by long codas, lasting 1 h or more. We find that the...
Geomorphic evolution of the Le Sueur River, Minnesota, USA, and implications for current sediment loading
K.B. Gran, P. Belmont, S.S. Day, C. Jennings, Aaron H. Johnson, L. Perg, P.R. Wilcock
2009, Special Paper of the Geological Society of America 119-130
There is clear evidence that the Minnesota River is the major sediment source for Lake Pepin and that the Le Sueur River is a major source to the Minnesota River. Turbidity levels are high enough to require management actions. We take advantage of the well-constrained Holocene history of the Le...
Advancing landscape change research through the incorporation of Inupiaq knowledge
Wendy R. Eisner, Chris J. Cuomo, Kenneth M. Hinkel, Benjamin M. Jones, Ronald H. Brower Sr.
2009, Arctic (62) 429-442
Indigenous knowledge is a valuable but under-used source of information relevant to landscape change research. We interviewed Iñupiat elders, hunters, and other knowledge-holders in the villages of Barrow and Atqasuk on the western Arctic Coastal Plain of northern Alaska to gain further insight into the processes governing the ubiquitous lakes...
Bank erosion along the dam-regulated lower Roanoke River, North Carolina
C.R. Hupp, E.R. Schenk, J.M. Richter, Robert K. Peet, Phil A. Townsend
2009, Special Paper of the Geological Society of America 97-108
Dam construction and its impact on downstream fluvial processes may substantially alter ambient bank stability and erosion. Three high dams (completed between 1953 and 1963) were built along the Piedmont portion of the Roanoke River, North Carolina; just downstream the lower part of the river flows across largely unconsolidated Coastal...
Satellite optical and radar data used to track wetland forest impact and short-term recovery from Hurricane Katrina
Elijah W. Ramsey III, A. Rangoonwala, B. Middleton, Z. Lu
2009, Wetlands (29) 66-79
Satellite Landsat Thematic Mapper (TM) and RADARSAT-1 (radar) satellite image data collected before and after the landfall of Hurricane Katrina in the Pearl River Wildlife Management Area on the Louisiana-Mississippi border, USA, were applied to the study of forested wetland impact and recovery. We documented the overall similarity in the...
Egg fatty acid composition from lake trout fed two Lake Michigan prey fish species.
D. C. Honeyfield, J.D. Fitzsimons, D. E. Tillitt, S.B. Brown
2009, Journal of Aquatic Animal Health (21) 272-278
We previously demonstrated that there were significant differences in the egg thiamine content in lake trout Salvelinus namaycush fed two Lake Michigan prey fish (alewife Alosa pseudoharengus and bloater Coregonus hoyi). Lake trout fed alewives produced eggs low in thiamine, but it was unknown whether the consumption of alewives affected...
Comparison of clast frequency and size in the resurge deposits at the Chesapeake Bay impact structure (Eyreville A and Langley cores): Clues to the resurge process
Jens Ormo, Erik Sturkell, J. Wright Horton, Jr., David S. Powars, Lucy E. Edwards
2009, Special Paper of the Geological Society of America 617-632
Collapse and inward slumping of unconsolidated sedimentary strata expanded the Chesapeake Bay impact structure far beyond its central basement crater. During crater collapse, sediment-loaded water surged back to fill the crater. Here, we analyze clast frequency and granulometry of these resurge deposits in one core hole from the outermost part...
Fractionation of metal stable isotopes by higher plants
F. Von Blanckenburg, N. Von Wiren, M. Guelke, D.J. Weiss, T.D. Bullen
2009, Elements (5) 375-380
Higher plants induce chemical reactions in the rhizosphere, facilitating metal uptake by roots. Fractionation of the isotopes in nutrients such as calcium, iron, magnesium, and zinc produces a stable isotope composition in the plants that generally differs from that of the growth medium. Isotope fractionation also occurs during transport of...
Dietary response of sympatric deer to fire using stable isotope analysis of liver tissue
W. David Walter, T.J. Zimmerman, David M. Leslie Jr., J.A. Jenks
2009, Wildlife Biology in Practice (5) 128-135
Carbon (??13C) and nitrogen (??15N) isotopes in biological samples from large herbivores identify photosynthetic pathways (C3 vs. C4) of plants they consumed and can elucidate potential nutritional characteristics of dietary selection. Because large herbivores consume a diversity of forage types, ??13C and ??15N in their tissue can index ingested and...
Polar organic compounds in pore waters of the Chesapeake Bay impact structure, Eyreville core hole: Character of the dissolved organic carbon and comparison with drilling fluids
Colleen E. Rostad, Ward E. Sanford
2009, Special Paper of the Geological Society of America (458) 891-903
Pore waters from the Chesapeake Bay impact structure cores recovered at Eyreville Farm, Northampton County, Virginia, were analyzed to characterize the dissolved organic carbon. After squeezing or centrifuging, a small volume of pore water, 100 μL, was taken for analysis by electrospray ionization–mass spectrometry. Pore-water samples were analyzed directly without...
