Incubating rainbow trout in soft water increased their later sensitivity to cadmium and zinc
Christopher A. Mebane, Daniel P. Hennessy, Frank S. Dillon
2010, Water, Air, & Soil Pollution (205) 245-250
Water hardness is well known to affect the toxicity of some metals; however, reports on the influence of hardness during incubation or acclimation on later toxicity to metals have been conflicting. We incubated rainbow trout (Oncorhynchus mykiss) near the confluence of two streams, one with soft water and...
Relationship of voluminous ignimbrites to continental arc plutons: Petrology of Jurassic ignimbrites and contemporaneous plutons in southern California
N. K. Fohey-Breting, A. P. Barth, J. L. Wooden, F.K. Mazdab, C.A. Carter, E.R. Schermer
2010, Journal of Volcanology and Geothermal Research (189) 1-11
Volcanism was broadly associated in both space and time with Mesozoic plutonism in the Cordillera continental margin arc, but the precise petrogenetic relationships between volcanic rocks and adjacent zoned plutons are not known. Igneous rocks in a tilted crustal section in California include four laterally extensive Jurassic ash flow tuffs...
Eolian transport of geogenic hexavalent chromium to ground water
W.W. Wood, D. Clark, J. L. Imes, T.B. Councell
2010, Ground Water (48) 19-29
A conceptual model of eolian transport is proposed to address the widely distributed, high concentrations of hexavalent chromium (Cr+6) observed in ground water in the Emirate of Abu Dhabi, United Arab Emirates. Concentrations (30 to more than 1000 μg/L Cr+6) extend over thousands of square kilometers of ground water systems....
Fine scale daily movements and habitat use of East Pacific green turtles at a shallow coastal lagoon in Baja California Sur, Mexico
Jesse Senko, Volker Koch, William M. Megill, Raymond R. Carthy, R.obert P. Templeton, Wallace J. Nichols
2010, Journal of Experimental Marine Biology and Ecology (391) 92-100
Green turtles spend most of their lives in coastal foraging areas where they face multiple anthropogenic impacts. Therefore, understanding their spatial use in this environment is a priority for conservation efforts. We studied the fine scale daily movements and habitat use of East Pacific green turtles (Chelonia mydas) at Laguna...
The response of stream fish to local and reach-scale variation in the occurrence of a benthic aquatic macrophyte
J.E. Argentina, Mary C. Freeman, B. J. Freeman
2010, Freshwater Biology (55) 643-653
The aquatic macrophyte Podostemum ceratophyllum has been shown to increase stream productivity, abundance and biomass of benthic invertebrates, and local occurrences of some stream fishes. However, experimental evidence that fishes preferentially associate with Podostemum is lacking, and the value of Podostemum as a predictor of stream fish assemblage composition has...
Sediment transport under wave groups: Relative importance between nonlinear waveshape and nonlinear boundary layer streaming
X. Yu, T.-J. Hsu, D.M. Hanes
2010, Journal of Geophysical Research C: Oceans (115)
Sediment transport under nonlinear waves in a predominately sheet flow condition is investigated using a two-phase model. Specifically, we study the relative importance between the nonlinear waveshape and nonlinear boundary layer streaming on cross-shore sand transport. Terms in the governing equations because of the nonlinear boundary layer process are included...
Increase in lake trout reproduction in Lake Huron following the collapse of alewife: Relief from thiamine deficiency or larval predation?
J.D. Fitzsimons, S. Brown, L. Brown, D. Honeyfield, J. He, J.E. Johnson
2010, Aquatic Ecosystem Health & Management (13) 73-84
In the Great Lakes there is still uncertainty as to the population level effects of a thiamine deficiency on salmonines caused by high consumption of alewives Alosa pseudoharengus. A resurgence of lake trout Salvelinus namaycush reproduction in Lake Huron following the crash of alewife stocks between 2002 and 2004 provided...
New and interesting species of the genus Muelleria (Bacillariophyta) from the Antarctic region and South Africa
B. Van De Vijver, G. Mataloni, L. Stanish, S. A. Spaulding
2010, Phycologia (49) 22-41
During a survey of the terrestrial diatom flora of some sub-Antarctic islands in the southern Indian and Atlantic Oceans and of the Antarctic continent, more than 15 taxa belonging to the genus Muelleria were observed. Nine of these taxa are described as new species using light and scanning electron microscopy....
Aeolian bedforms, yardangs, and indurated surfaces in the Tharsis Montes as seen by the HiRISE Camera: Evidence for dust aggregates
Nathan T. Bridges, Maria E. Banks, Ross A. Beyer, Frank C. Chuang, Eldar Z. Noe Dobrea, Kenneth E. Herkenhoff, Laszlo P. Keszthelyi, K.E. Fishbaugh, Alfred S. McEwen, Timothy I. Michaels, B.J. Thomson, James J. Wray
2010, Icarus (205) 165-182
HiRISE images of Mars with ground sampling down to 25 cm/pixel show that the dust-rich mantle covering the surfaces of the Tharsis Montes is organized into ridges whose form and distribution are consistent with formation by aeolian saltation. Other dusty areas near the volcanoes and elsewhere on the planet exhibit...
Intraspecific variation in growth of marsh macrophytes in response to salinity and soil type: Implications for wetland restoration
R.J. Howard
2010, Estuaries and Coasts (33) 127-138
Genetic diversity within plant populations can influence plant community structure along environmental gradients. In wetland habitats, salinity and soil type are factors that can vary along gradients and therefore affect plant growth. To test for intraspecific growth variation in response to these factors, a greenhouse study was conducted using common...
A late Miocene-early Pliocene chain of lakes fed by the Colorado River: Evidence from Sr, C, and O isotopes of the Bouse Formation and related units between Grand Canyon and the Gulf of California
J. A. Roskowski, P. J. Patchett, J.E. Spencer, P. A. Pearthree, D. L. Dettman, J. E. Faulds, A. C. Reynolds
2010, Geological Society of America Bulletin (122) 1625-1636
We report strontium isotopic results for the late Miocene Hualapai Limestone of the Lake Mead area (Arizona-Nevada) and the latest Miocene to early Pliocene Bouse Formation and related units of the lower Colorado River trough (Arizona-California-Nevada), together with parallel oxygen and carbon isotopic analyses of Bouse samples, to constrain the...
The spatial and temporal variability of groundwater recharge in a forested basin in northern Wisconsin
W. R. Dripps, K. R. Bradbury
2010, Hydrological Processes (24) 383-392
Recharge varies spatially and temporally as it depends on a wide variety of factors (e.g. vegetation, precipitation, climate, topography, geology, and soil type), making it one of the most difficult, complex, and uncertain hydrologic parameters to quantify. Despite its inherent variability, groundwater modellers, planners, and policy makers often ignore recharge...
In situ measurements of volatile aromatic hydrocarbon biodegradation rates in groundwater
I.M. Cozzarelli, B.A. Bekins, R.P. Eganhouse, E. Warren, H.I. Essaid
2010, Journal of Contaminant Hydrology (111) 48-64
Benzene and alkylbenzene biodegradation rates and patterns were measured using an in situ microcosm in a crude-oil contaminated aquifer near Bemidji, Minnesota. Benzene-D6, toluene, ethylbenzene, o-, m- and p-xylenes and four pairs of C3- and C4-benzenes were added to an in situ microcosm and studied over a 3-year period. The...
Mineralogical and chemical characteristics of some natural jarosites
George A. Desborough, Kathleen S. Smith, Heather A. Lowers, Gregg A. Swayze, Jane M. Hammarstrom, Sharon F. Diehl, Reinhard W. Leinz, Rhonda L. Driscoll
2010, Geochimica et Cosmochimica Acta (74) 1041-1056
This paper presents a detailed study of the mineralogical, microscopic, thermal, and spectral characteristics of jarosite and natrojarosite minerals. Systematic mineralogic and chemical examination of a suite of 32 natural stoichiometric jarosite and natrojarosite samples from diverse supergene and hydrothermal environments indicates that there is only limited solid solution between...
Rodents and lagomorphs (Mammalia) from the Hemphillian (late Miocene) of Utah
W.W. Korth, D. D. De Blieux
2010, Journal of Vertebrate Paleontology (30) 226-235
Four species of rodents (two heteromyids and two cricetids) and one lagomorph are identified from the late Tertiary Sevier River Formation of Utah. The heteromyids include a new genus and species of heteromyine, Metaliomys sevierensis, which is intermediate in morphology between the Clarendonian and early Hemphillian Diprionomys Kellogg and the...
Headwater streams and forest management: does ecoregional context influence logging effects on benthic communities?
R. Bruce Medhurst, Mark S. Wipfli, Chris Binckley, Karl Polivka, Paul F. Hessburg, R. Brion Salter
2010, Hydrobiologia (641) 71-83
Effects of forest management on stream communities have been widely documented, but the role that climate plays in the disturbance outcomes is not understood. In order to determine whether the effect of disturbance from forest management on headwater stream communities varies by climate, we evaluated benthic macroinvertebrate communities in 24...
The ShakeOut earthquake scenario: Verification of three simulation sets
J. Bielak, R.W. Graves, K.B. Olsen, R. Taborda, L. Ramirez-Guzman, S.M. Day, G.P. Ely, D. Roten, T.H. Jordan, P.J. Maechling, J. Urbanic, Y. Cui, G. Juve
2010, Geophysical Journal International (180) 375-404
This paper presents a verification of three simulations of the ShakeOut scenario, an Mw 7.8 earthquake on a portion of the San Andreas fault in southern California, conducted by three different groups at the Southern California Earthquake Center using the SCEC Community Velocity Model for this region. We conducted two...
Early Pleistocene origin of reefs around Lanai, Hawaii
Jody M. Webster, David A. Clague, Iain D.E. Faichney, Paul D. Fullagar, James R. Hein, James G. Moore, Charles K. Paull
2010, Earth and Planetary Science Letters (290) 331-339
A sequence of submerged terraces (L1–L12) offshore Lanai was previously interpreted as reefal, and correlated with a similar series of reef terraces offshore Hawaii island, whose ages are known to be <500 ka. We present bathymetric, observational, lithologic and 51 87Sr/86Sr isotopic measurements for the submerged Lanai terraces ranging from −300 to...
Geologie study off gravels of the Agua Fria River, Phoenix, AZ
W. H. Langer, E. Dewitt, D.T. Adams, T. O’Briens
2010, Mining Engineering (62) 27-31
The annual consumption of sand and gravel aggregate in 2006 in the Phoenix, AZ metropolitan area was about 76 Mt (84 million st) (USGS, 2009), or about 18 t (20 st) per capita. Quaternary alluvial deposits in the modern stream channel of the Agua Fria River west of Phoenix are...
Coal-tar-based parking lot sealcoat: An unrecognized source of PAH to settled house dust
B.J. Mahler, P. C. Van Metre, J.T. Wilson, M. Musgrove, T.L. Burbank, T.E. Ennis, T. J. Bashara
2010, Environmental Science & Technology (44) 894-900
Despite much speculation, the principal factors controlling concentrations of polycyclic aromatic hydrocarbons (PAH) in settled house dust (SHD) have not yet been identified. In response to recent reports that dust from pavement with coaltar-based sealcoat contains extremely high concentrations of PAH, we measured PAH in SHD from 23 apartments and...
A shallow subsurface controlled release facility in Bozeman, Montana, USA, for testing near surface CO2 detection techniques and transport models
L.H. Spangler, L.M. Dobeck, K.S. Repasky, A.R. Nehrir, S.D. Humphries, C.J. Keith, J.A. Shaw, J.H. Rouse, A.B. Cunningham, S.M. Benson, C.M. Oldenburg, J.L. Lewicki, A.W. Wells, J.R. Diehl, B.R. Strazisar, J.E. Fessenden, T.A. Rahn, J.E. Amonette, J.L. Barr, W.L. Pickles, J.D. Jacobson, E. A. Silver, E.J. Male, H.W. Rauch, K.S. Gullickson, R. Trautz, Yousif K. Kharaka, J. Birkholzer, L. Wielopolski
2010, Environmental Earth Sciences (60) 227-239
A controlled field pilot has been developed in Bozeman, Montana, USA, to study near surface CO2 transport and detection technologies. A slotted horizontal well divided into six zones was installed in the shallow subsurface. The scale and CO2 release rates were chosen to be relevant to developing monitoring strategies for...
Influence of shell morphology on distributions of unionids in the upper Mississippi River
M.R. Bartsch, S. J. Zigler, T.J. Newton, J.S. Sauer
2010, Journal of Molluscan Studies (76) 67-76
Attempts to predict the distribution of unionids from readily measurable microhabitat descriptors (i.e. water depth, current velocity, stream size, sediment type) have been largely unsuccessful, but certain biological and calculated hydraulic variables have recently shown some predictive power. We used historic and recent data on unionids (from 1987 to 2003)...
Contingency table analysis of pebble lithology and roundness: A case study of Huangshui River, China and comparison to rivers in the Rocky Mountains, USA
X. Miao, D. A. Lindsey, Z. Lai, Xiuying Liu
2010, Sedimentary Geology (224) 49-53
Contingency table analysis of pebble lithology and roundness is an effective way to identify the source terrane of a drainage basin and to distinguish changes in basin size, piracy, tectonism, and other events. First, the analysis to terrace gravel deposited by the Huangshui River, northeastern Tibet Plateau, China, shows statistically...
Challenges in merging fisheries research and management: The Upper Mississippi River experience
J. Garvey, B. Ickes, S. Zigler
2010, Hydrobiologia (640) 125-144
The Upper Mississippi River System (UMRS) is a geographically diverse basin extending 10?? north temperate latitude that has produced fishes for humans for millennia. During European colonization through the present, the UMRS has been modified to meet multiple demands such as navigation and flood control. Invasive species, notably the common...
Elwha River dam removal: A major opportunity for salmon and steelhead recolonization
George R. Pess, Samuel J. Brenkman, Gary A. Winans, Michael L. McHenry, Jeffrey J. Duda, Timothy J. Beechie
2010, Osprey
In this in-depth paper, authors George R. Pess, Gary A. Winans and Timothy J. Beechie of the NOAA Fisheries, Northwest Fisheries Science Center in Seattle, Samuel J. Brenkman of the National Park Service, Olympic National Park, Michael L. McHenry of the Lower Elwha Klallam Tribe and Jeffrey J. Duda of...
