Spatiotemporal patterns of wetland occurrence in the prairie pothole region of eastern South Dakota
S.N. Kahara, R.M. Mockler, K.F. Higgins, S. R. Chipps, R.R. Johnson
2009, Wetlands (29) 678-689
We evaluated changes in wetland abundance, size, and classification between average (19791986) and above-average (19951999) precipitation periods for two physiographic regions in eastern South Dakota. Temporal shifts in wetland numbers, area, and class varied by topographic location. In high wetland density areas (> 8 wetlands/100 ha), our data suggests that...
The effects of enhanced zinc on spatial memory and plaque formation in transgenic mice
D.H. Linkous, P.A. Adlard, P.B. Wanschura, K.M. Conko, J.M. Flinn
2009, Journal of Alzheimer's Disease (18) 565-579
There is considerable evidence suggesting that metals play a central role in the pathogenesis of Alzheimer's disease. Reports suggest that elevated dietary metals may both precipitate and potentiate an Alzheimer's disease phenotype. Despite this, there remain few studies that have examined the behavioral consequences of elevated dietary metals in wild...
A multiscale analysis of coral reef topographic complexity using lidar-derived bathymetry
D.G. Zawada, J. C. Brock
2009, Journal of Coastal Research 6-15
Coral reefs represent one of the most irregular substrates in the marine environment. This roughness or topographic complexity is an important structural characteristic of reef habitats that affects a number of ecological and environmental attributes, including species diversity and water circulation. Little is known about the range of topographic complexity...
Spatial habitat use patterns of sea otters in coastal washington
K.L. Laidre, R.J. Jameson, E. Gurarie, S.J. Jeffries, H. Allen
2009, Journal of Mammalogy (90) 906-917
Sea otter (Enhydra lutris kenyoni) movements, home range, and activity budgets were described from data collected during very-high-frequency radiotelemetry studies of 75 individuals on the outer coast of Washington State between 1992 and 1999. Sea otters were located at least once per week from 22 accessible sites along the coast....
A quarter-million years of paleoenvironmental change at Bear Lake, Utah and Idaho
D. S. Kaufman, Jordon Bright, W.E. Dean, J. G. Rosenbaum, K. Moser, R. Scott Anderson, Steven M. Colman, C.W. Heil Jr., Gonzalo Jiménez-Moreno, M.C. Reheis, K. R. Simmons
2009, Special Paper of the Geological Society of America 311-351
A continuous, 120-m-long core (BL00-1) from Bear Lake, Utah and Idaho, contains evidence of hydrologic and environmental change over the last two glacial-interglacial cycles. The core was taken at 41.95??N, 111.31??W, near the depocenter of the 60-m-deep, spring-fed, alkaline lake, where carbonate-bearing sediment has accumulated continuously. Chronological control is poor...
Age, geochemical composition, and distribution of Oligocene ignimbrites in the northern Sierra Nevada, California: Implications for landscape morphology, elevation, and drainage divide geography of the Nevadaplano
Elizabeth J. Cassel, Andrew T. Calvert, Stephan A. Graham
2009, International Geology Review (51) 723-742
To gain a better understanding of the topographic and landscape evolution of the Cenozoic Sierra Nevada and Basin and Range, we combine geochemical and isotopic age correlations with palaeoaltimetry data from widely distributed ignimbrites in the northern Sierra Nevada, California. A sequence of Oligocene rhyolitic ignimbrites is preserved across the...
Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach
J.H. Merino, J. Carter, S.L. Merino
2009, Gulf of Mexico Science (27) 9-20
Distribution of marine submerged aquatic vegetation (SAV; i.e., seagrass) in the northern Gulf of Mexico coast has been documented, but there are nonmarine submersed or SAV species occurring in estuarine salinities that have not been extensively reported. We sampled 276 SAV beds along the gulf coast in Florida, Alabama, Mississippi,...
Silt and gas accumulation beneath an artificial recharge spreading basin, Southwestern Utah, U.S.A.
V.M. Heilweil, D. K. Solomon, G. Ortiz
2009, Boletin Geologico y Minero (120) 185-196
Sand Hollow Reservoir in southwestern Utah, USA, is operated for both surface-water storage and artificial recharge to the underlying Navajo Sandstone. The total volume of estimated artificial recharge between 2002 and 2007 is 85 million cubic meters (69,000 acre-feet). Since 2002, artificial recharge rates have generally been declining and are...
Pliocene three-dimensional global ocean temperature reconstruction
H.J. Dowsett, M.M. Robinson, K.M. Foley
2009, Climate of the Past (5) 769-783
The thermal structure of the mid-Piacenzian ocean is obtained by combining the Pliocene Research, Interpretation and Synoptic Mapping Project (PRISM3) multiproxy sea-surface temperature (SST) reconstruction with bottom water temperature estimates from 27 locations produced using Mg/Ca paleothermometry based upon the ostracod genus Krithe. Deep water temperature estimates are skewed toward...
Migration patterns and wintering range of common loons breeding in the Northeastern United States
K.P. Kenow, D. Adams, N. Schoch, D.C. Evers, W. Hanson, D. Yates, L. Savoy, T.J. Fox, A. Major, R. Kratt, J. Ozard
2009, Waterbirds (32) 234-247
A study, using satellite telemetry, was conducted to determine the precise migration patterns and wintering locations of Common Loons (Gavia immer) breeding in the northeastern United States. Transmitters were implanted in 17 loons (16 adults and one juvenile) that were captured on breeding lakes in New York, New Hampshire, and...
Water level observations in mangrove swamps during two hurricanes in Florida
K. W. Krauss, T.W. Doyle, T.J. Doyle, C.M. Swarzenski, A.S. From, Richard H. Day, W.H. Conner
2009, Wetlands (29) 142-149
Little is known about the effectiveness of mangroves in suppressing water level heights during landfall of tropical storms and hurricanes. Recent hurricane strikes along the Gulf Coast of the United States have impacted wetland integrity in some areas and hastened the need to understand how and to what degree coastal...
Hand-mouth transfer and potential for exposure to E. coli and F+ coliphage in beach sand, Chicago, Illinois
R.L. Whitman, K. Przybyla-Kelly, D.A. Shively, M.B. Nevers, M.N. Byappanahalli
2009, Journal of Water and Health (7) 623-629
Beach sand contains fecal indicator bacteria, often in densities greatly exceeding the adjacent swimming waters. We examined the transferability of Escherichia coli and F+ coliphage (MS2) from beach sand to hands in order to estimate the potential subsequent health risk. Sand with high initial E. coli concentrations was collected from...
Soil and nutrient retention in winter-flooded ricefields with implications for watershed management
S.W. Manley, R.M. Kaminski, P.B. Rodrigue, J.C. Dewey, S.H. Schoenholtz, P.D. Gerard, K. J. Reinecke
2009, Journal of Soil and Water Conservation (64) 173-182
The ability of water resources to support aquatic life and human needs depends, in part, on reducing nonpoint source pollution amid contemporary agricultural practices. Winter retention of shallow water on rice and other agricultural fields is an accepted management practice for wildlife conservation; however, soil and water conservation benefits are...
Neotectonic analysis of upper klamath lake, oregon: New insights from seismic reflection data
L.M. Liberty, T. L. Pratt, M. Lyle, I. P. Madin
2009, Special Paper of the Geological Society of America 71-82
We present marine high-resolution seismic reflection data from Upper Klamath Lake, Oregon, to discern the underlying structure and estimate Quaternary slip rates in this actively extending Basin and Range system. The sediment patterns and structures imaged on our seismic profiles reveal a complex geologic system that reflects a changing climate...
Depletion of isoeugenol residues from the fillet tissue of AQUI-S™ exposed rainbow trout (Oncorhynchus mykiss)
Jeffery R. Meinertz, Theresa M. Schreier
2009, Aquaculture (296) 200-206
There is a critical need in U.S. public aquaculture and fishery management for an approved sedative that allows for the immediate release of fish after sedation. AQUI-STM is a fish anesthetic/sedative approved for use in several countries and until recently was being developed in the U.S. as a sedative for immediate...
Seafloor terrain analysis and geomorphology of the greater Los Angeles Margin and San Pedro Basin, Southern California
P. Dartnell, J.V. Gardner
2009, Special Paper of the Geological Society of America 9-28
The seafloor off greater Los Angeles, California, has been extensively studied for the past century. Terrain analysis of recently compiled multibeam bathymetry reveals the detailed seafloor morphology along the Los Angeles Margin and San Pedro Basin. The terrain analysis uses the multibeam bathymetry to calculate two seafloor indices, a seafloor...
A sampling design framework for monitoring secretive marshbirds
Douglas H. Johnson, J.P. Gibbs, M. Herzog, S. Lor, N.D. Niemuth, C. A. Ribic, M. Seamans, T.L. Shaffer, W.G. Shriver, S.V. Stehman, W.L. Thompson
2009, Waterbirds (32) 203-215
A framework for a sampling plan for monitoring marshbird populations in the contiguous 48 states is proposed here. The sampling universe is the breeding habitat (i.e. wetlands) potentially used by marshbirds. Selection protocols would be implemented within each of large geographical strata, such as Bird Conservation Regions. Site selection will...
Phosphorus and nitrogen legacy in a restoration wetland, upper Klamath lake, Oregon
J.H. Duff, K.D. Carpenter, D.T. Snyder, Karl K. Lee, R.J. Avanzino, F.J. Triska
2009, Wetlands (29) 735-746
The effects of sediment, ground-water, and surface-water processes on the timing, quantity, and mechanisms of N and P fluxes were investigated in the Wood River Wetland 57 years after agricultural practices ceased and seasonal and permanent wetland hydrologies were restored. Nutrient concentrations in standing water largely reflected ground water in...
Erosional history of Cape Halkett and contemporary monitoring of bluff retreat, Beaufort Sea coast, Alaska
Benjamin M. Jones, Christopher D. Arp, Richard A. Beck, Guido Grosse, James M. Webster, Frank E. Urban
2009, Polar Geography (32) 129-142
Cape Halkett is located along the Beaufort Sea at the end of a low-lying tundra landscape. The area has been subject to major modifications over the last century as a result of erosion and migration of the coastline inland. Long-term mean annual erosion rates (1955-2009) for the entire cape are...
Population variation in isotopic composition of shorebird feathers: Implications for determining molting grounds
J. Torres-Dowdall, A.H. Farmer, E.H. Bucher, R. O. Rye, G. Landis
2009, Waterbirds (32) 300-310
Stable isotope analyses have revolutionized the study of migratory connectivity. However, as with all tools, their limitations must be understood in order to derive the maximum benefit of a particular application. The goal of this study was to evaluate the efficacy of stable isotopes of C, N, H, O and...
Wetland use and feeding by lesser scaup during spring migration across the upper Midwest, USA
M.J. Anteau, A. D. Afton
2009, Wetlands (29) 704-712
Low food availability and forage quality and concomitant decreased lipid reserves of lesser scaup (Aythya affinis; hereafter scaup) during spring migration in the upper Midwest may partially explain reductions in the continental population of scaup. In springs 20042005, we examined wetland use and feeding activity of scaup on 356 randomly-selected...
Endogenic carbonate sedimentation in Bear Lake, Utah and Idaho, over the last two glacial-interglacial cycles
W.E. Dean
2009, Special Paper of the Geological Society of America 169-196
Sediments deposited over the past 220,000 years in Bear Lake, Utah and Idaho, are predominantly calcareous silty clay, with calcite as the dominant carbonate mineral. The abundance of siliciclastic sediment indicates that the Bear River usually was connected to Bear Lake. However, three marl intervals containing more than 50% CaCO3...
Feeding ecology of arctic-nesting sandpipers during spring migration through the prairie pothole region
J.L. Eldridge, Gary L. Krapu, Douglas H. Johnson
2009, Journal of Wildlife Management (73) 248-252
We evaluated food habits of 4 species of spring-migrant calidrid sandpipers in the Prairie Pothole Region (PPR) of North Dakota. Sandpipers foraged in several wetland classes and fed primarily on aquatic dipterans, mostly larvae, and the midge family Chironomidae was the primary food eaten. Larger sandpiper species foraged in deeper...
Late Quaternary sedimentary features of Bear Lake, Utah and Idaho
J. P. Smoot
2009, Special Paper of the Geological Society of America 49-104
Bear Lake sediments were predominantly aragonite for most of the Holocene, reflecting a hydrologically closed lake fed by groundwater and small streams. During the late Pleistocene, the Bear River flowed into Bear Lake and the lake waters spilled back into the Bear River drainage. At that time, sediment deposition was...
Rock-avalanche and ocean-resurge deposits in the late Eocene Chesapeake Bay impact structure: Evidence from the ICDP-USGS Eyreville cores, Virginia, USA
Gregory Gohn, David S. Powars, H. Dypvik, Lucy E. Edwards
2009, Special Paper of the Geological Society of America 587-615
An unusually thick section of sedimentary breccias dominated by target-sediment clasts is a distinctive feature of the late Eocene Chesapeake Bay impact structure. A cored 1766-m-deep section recovered from the central part of this marine-target structure by the International Continental Scientific Drilling Program (ICDP)-U.S. Geological Survey (USGS) drilling project contains...
