Cladophora (Chlorophyta) spp. harbor human bacterial pathogens in nearshore water of Lake Michigan
S. Ishii, T. Yan, D.A. Shively, M.N. Byappanahalli, R.L. Whitman, M.J. Sadowsky
2006, Applied and Environmental Microbiology (72) 4545-4553
Cladophora glomerata, a macrophytic green alga, is commonly found in the Great Lakes, and significant accumulations occur along shorelines during the summer months. Recently, Cladophora has been shown to harbor high densities of the fecal indicator bacteria Escherichia coli and enterococci. Cladophora may also harbor human pathogens; however, until now, no studies to address this question...
AFS men and women differ most in their lifestyle choices
N.A. Connelly, T.L. Brown, J.M. Hardiman
2006, Fisheries (31) 503-506
The American Fisheries Society sponsored a survey to examine the career development choices of men and women and how they might differ by gender. A random sample of 700 men and 700 women was selected from the AFS membership database. The survey was mailed out in October 2004 and 991...
A practical method for obtaining useful quantities of pheromones from sea lamprey and other fishes for identification and control
J.M. Fine, S.P. Sisler, L.A. Vrieze, W.D. Swink, P.W. Sorensen
2006, Journal of Great Lakes Research (32) 832-838
Pheromonally-mediated trapping is currently being developed for use in sea lamprey control in the Laurentian Great Lakes. To identify and test lamprey pheromones a practical procedure was needed to isolate relatively large quantities of pheromone from lamprey holding water. The present study developed such a technique. It employs Amberlite XAD7HP,...
Mortality and pathology in brown bullheads Amieurus nebulosus associated with a spontaneous Edwardsiella ictaluri outbreak under tank culture conditions
L. R. Iwanowicz, A.R. Griffin, Deborah D. Cartwright, V. S. Blazer
2006, Diseases of Aquatic Organisms (70) 219-225
Brown bullheads Amieurus nebulosus (family Ictaluridae) are commonly used as a sentinel of environmental contamination. These fish are not generally cultured under laboratory conditions and little is known about their disease susceptibility. Here we report an outbreak of disease due to Edwardsiella ictaluri in a laboratory population of tank-reared, wild-caught...
The influence of aridity and fire on Holocene prairie communities in the eastern Prairie Peninsula
D.M. Nelson, S.H. Feng, E.C. Grimm, B. Brandon Curry, J.E. Slate
2006, Ecology (87) 2523-2536
The role of climate and fire in the development, maintenance, and species composition of prairie in the eastern axis of the tallgrass Prairie Peninsula intrigued early North American ecologists. However, evaluation of the long-standing hypotheses about the region's environmental history has been hampered by the scarcity of paleorecords. We conducted...
New ghost-node method for linking different models with varied grid refinement
S.C. James, J.E. Dickinson, S.W. Mehl, M. C. Hill, S. A. Leake, G.A. Zyvoloski, A.-A. Eddebbarh
2006, Conference Paper, Proceedings of the 11th International High Level Radioactive Waste Management Conference, IHLRWM
A flexible, robust method for linking grids of locally refined ground-water flow models constructed with different numerical methods is needed to address a variety of hydrologic problems. This work outlines and tests a new ghost-node model-linking method for a refined "child" model that is contained within a larger and coarser...
Effects of sample survey design on the accuracy of classification tree models in species distribution models
T.C. Edwards Jr., D.R. Cutler, N.E. Zimmermann, L. Geiser, Gretchen G. Moisen
2006, Ecological Modelling (199) 132-141
We evaluated the effects of probabilistic (hereafter DESIGN) and non-probabilistic (PURPOSIVE) sample surveys on resultant classification tree models for predicting the presence of four lichen species in the Pacific Northwest, USA. Models derived from both survey forms were assessed using an independent data set (EVALUATION). Measures of accuracy as gauged...
International symposium on airborne geophysics
T. Mogi, H. Ito, H. Kaieda, K. Kusunoki, R. W. Saltus, D.V. Fitterman, S. Okuma, T. Nakatsuka
2006, Conference Paper, Eos
[No abstract available]...
Sediment distribution and transport across the continental shelf and slope under idealized wind forcing
S.A. Condie, C. R. Sherwood
2006, Progress in Oceanography (70) 255-270
Resuspension, transport, and deposition of sediments over the continental shelf and slope are complex processes and there is still a need to understand the underlying spatial and temporal dynamical scales. As a step towards this goal, a two-dimensional slice model (zero gradients in the alongshore direction) based on the primitive...
Demography, genetics, and the value of mixed messages
John M. Pearce, Sandra L. Talbot
2006, Condor (108) 474-479
Iverson et al. (2004) used estimates of the homing rate for molting adult Harlequin Ducks (Histrionicus histrionicus) in Alaska to draw inferences about population structure. Homing rates, defined as one minus the ratio of birds recaptured elsewhere to those recaptured at the original banding site, were high (0.95–1.00) for males...
State summaries: Colorado
J. Keller, C. Carroll, B. Widmann
2006, Mining Engineering (58) 74-79
According to the Colorado Geological Survey (CGS), Colorado's mining industry enjoyed a record-breaking year in 2005. For the whole year, the total value of nonfuel minerals, coal and uranium produced in the state in 2005 amounted to $2.4 billion. The production value of $1.52 billion in the nonfuel sector broke...
Effects of substrate and hydrodynamic conditions on the formation of mussel beds in a large river
Y. Morales, L.J. Weber, A.E. Mynett, T.J. Newton
2006, Journal of the North American Benthological Society (25) 664-676
A numerical model for simulation of freshwater mussel dynamics was used to investigate the effects of substrate and hydrodynamic conditions on the formation of mussel beds in a 10-km reach of the Upper Mississippi River (UMR). Suitable habitats for mussel survival were identified by creating a dimensionless parameter (shear stress...
Effects of abdominally implanted radiotransmitters with percutaneous antennas on migration, reproduction, and survival of Canada geese
Jerry W. Hupp, John M. Pearce, Daniel M. Mulcahy, David A. Miller
2006, Journal of Wildlife Management (70) 812-822
Abdominally implanted radiotransmitters with percutaneous antennas are increasingly used to monitor movements, survival, and reproduction of waterbirds. However, there has been relatively little assessment of the effects of such radios on avian demographic parameters or migration. We implanted either a 26- or 35-g abdominal transmitter with percutaneous antenna in 198...
The Cretaceous Tetori biota in Japan and its evolutionary significance for terrestrial ecosystems in Asia
M. Matsukawa, M. Ito, N. Nishida, K. Koarai, M.G. Lockley, D. J. Nichols
2006, Cretaceous Research (27) 199-225
Cretaceous nonmarine deposits are widely distributed on the Asian continent and include various kinds of zoo- and phyto-assemblages. The Tetori Group is one of the most important Mesozoic terrestrial deposits in East Asia, and for this reason its geology, stratigraphy, and biota have been studied intensively by our group for...
A 16-year record of eolian dust in Southern Nevada and California, USA: Controls on dust generation and accumulation
M.C. Reheis
2006, Journal of Arid Environments (67) 487-520
An ongoing project monitors modern dust accumulation in the arid southwestern United States to (1) determine the rate and composition of dust inputs to soils and (2) relate dust accumulation to weather patterns to help predict the effects of climate change on dust production and accumulation. The 16-year records of...
Radiometric ages of the Fire Clay tonstein [Pennsylvanian (Upper Carboniferous), Westphalian, Duckmantian]: A comparison of U-Pb zircon single-crystal ages and 40Ar/39Ar sanidine single-crystal plateau ages
P.C. Lyons, T.E. Krogh, Y.Y. Kwok, D.W. Davis, W.F. Outerbridge, H. T. Evans Jr.
2006, International Journal of Coal Geology (67) 259-266
The Fire Clay tonstein [Pennsylvanian (Upper Carboniferous), Westphalian Series, Duckmantian Stage]-a kaolinized, volcanic-ash deposit occurring in Kentucky, West Virginia, Tennessee, and Virginia-is the most widespread bed in the Middle Pennsylvanian of the central Appalachian basin, USA. A concordant single-crystal U-Pb zircon datum for this tonstein gives a 206Pb/238U age of...
Attenuated total reflectance spectroscopy of plant leaves: A tool for ecological and botanical studies
B. Ribeiro da Luz
2006, New Phytologist (172) 305-318
??? Attenuated total reflectance (ATR) spectra of plant leaves display complex absorption features related to organic constituents of leaf surfaces. The spectra can be recorded rapidly, both in the field and in the laboratory, without special sample preparation. ??? This paper explores sources of ATR spectral variation in leaves, including...
2480 Ma mafic magmatism in the northern Black Hills, South Dakota: A new link connecting the Wyoming and Superior cratons
P.S. Dahl, M.A. Hamilton, J. L. Wooden, K.A. Foland, R. Frei, J.A. McCombs, D.K. Holm
2006, Canadian Journal of Earth Sciences (43) 1579-1600
The Laramide Black Hills uplift of southwest South Dakota exposes a Precambrian crystalline core of ???2560-2600 Ma basement granitoids nonconformably overlain by two Paleoproterozoic intracratonic rift successions. In the northern Black Hills, a 1 km thick, layered sill (the Blue Draw metagabbro) that intrudes the older rift succession provides a...
The effect of multiple stressors on salt marsh end-of-season biomass
J.M. Visser, C.E. Sasser, B.S. Cade
2006, Estuaries and Coasts (29) 328-339
It is becoming more apparent that commonly used statistical methods (e.g., analysis of variance and regression) are not the best methods for estimating limiting relationships or stressor effects. A major challenge of estimating the effects associated with a measured subset of limiting factors is to account for the effects of...
Anomalous postcritical refraction behavior for certain transversely isotropic media
L. Fa, R.L. Brown, J.P. Castagna
2006, Journal of the Acoustical Society of America (120) 3479-3492
Snell's law at the boundary between two transversely isotropic media with a vertical axis of symmetry (VTI media) can be solved by setting up a fourth order polynomial for the sine of the reflection/transmission angles. This approach reveals the possible presence of an anomalous postcritical angle for certain transversely isotropic...
Last glacial maximum and Holocene lake levels of Owens Lake, eastern California, USA
S.N. Bacon, R. M. Burke, S.K. Pezzopane, A. S. Jayko
2006, Quaternary Science Reviews (25) 1264-1282
Stratigraphic investigations of fluvio-deltaic and lacustrine sediments exposed in stream cuts, quarry walls, and deep trenches east of the Sierra Nevada in Owens Valley near Lone Pine, California have enabled the reconstruction of pluvial Owens Lake level oscillations. Age control for these sediments is from 22 radiocarbon (14C) dates and...
Geographical patterns of human diet derived from stable-isotope analysis of fingernails
G.B. Nardoto, S. Silva, C. Kendall, J.R. Ehleringer, L.A. Chesson, E.S.B. Ferraz, M.Z. Moreira, Jean P. H. B. Ometto, L.A. Martinelli
2006, American Journal of Physical Anthropology (131) 137-146
Carbon and nitrogen isotope ratios of human fingernails were measured in 490 individuals in the western US and 273 individuals in southeastern Brazil living in urban areas, and 53 individuals living in a moderately isolated area in the central Amazon region of Brazil and consuming mostly locally grown foods. In...
Great earthquakes of variable magnitude at the Cascadia subduction zone
A.R. Nelson, H.M. Kelsey, Robert C. Witter
2006, Quaternary Research (65) 354-365
Comparison of histories of great earthquakes and accompanying tsunamis at eight coastal sites suggests plate-boundary ruptures of varying length, implying great earthquakes of variable magnitude at the Cascadia subduction zone. Inference of rupture length relies on degree of overlap on radiocarbon age ranges for earthquakes and tsunamis, and relative amounts...
Nest survival of clay-colored and vesper sparrows in relation to woodland edge in mixed-grass prairies
T.A. Grant, E.M. Madden, T.L. Shaffer, P.J. Pietz, G.B. Berkey, N.J. Kadrmas
2006, Journal of Wildlife Management (70) 691-701
The quantity and quality of northern mixed-grass prairie continues to decline because of conversion to agriculture, invasion of woody and exotic plants, and disruption of important ecological processes that shape grasslands. Declines in grassland bird populations in North Dakota, USA, have coincided with these largely anthropogenic alterations to prairie habitat....
State summaries: Oklahoma
S.T. Krukowski
2006, Mining Engineering (58) 112
In 2005, Oklahoma mines produced both industrial minerals and coal. No metals were mined in the state. Based on value, leading industrial minerals include crushed stone followed by cement, construction sand and gravel, industrial sand and gravel, iodine and gypsum. The Oklahoma Department of Mines (ODOM) reported that more than...
