Occurrence of the Great Lake's most recent invader, Hemimysis anomala, in the diet of fishes in southeastern Lake Ontario
B.F. Lantry, M. G. Walsh, J. H. Johnson, J.E. McKenna Jr.
2010, Journal of Great Lakes Research (36) 179-183
The Ponto-Caspian mysid, Hemimysis anomala, was first observed in southeastern Lake Ontario in May 2006. During July and August 2007, gill nets were fished in 6 to 8 m of water at two locations of known Hemimysis colonization in southeastern Lake Ontario to determine if fish that consume macroinvertebrates were...
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...
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)...
Influence of organic matter on the transport of Cryptosporidium parvum oocysts in a ferric oxyhydroxide-coated quartz sand saturated porous medium
R.A. Abudalo, J. N. Ryan, Ronald W. Harvey, David W. Metge, Lee L. Landkamer
2010, Water Research (44) 1104-1113
To assess the effect of organic matter on the transport of Cryptosporidium parvum oocysts in a geochemically heterogeneous saturated porous medium, we measured the breakthrough and collision efficiencies of oocysts as a function of dissolved organic matter concentration in a flow-through column containing ferric oxyhydroxide-coated sand. We characterized the surface...
Vulnerability of age-0 pallid sturgeon Scaphirhynchus albus to fish predation
William E. French, B. D. S. Graeb, S. R. Chipps, K.N. Bertrand, T.M. Selch, Robert A. Klumb
2010, Journal of Applied Ichthyology (26) 6-10
Stocking is a commonly employed conservation strategy for endangered species such as the pallid sturgeon, Scaphirhynchus albus. However, decisions about when, where and at what size pallid sturgeon should be stocked are hindered because vulnerability of pallid sturgeon to fish predation is not known. The objective of this study was...
Reproductive failure of the red shiner (Cyprinella lutrensis) after exposure to an exogenous estrogen
M.M. McGree, D.L. Winkelman, N.K.M. Vieira, A.M. Vajda
2010, Canadian Journal of Fisheries and Aquatic Sciences (67) 1730-1743
Endocrine disrupting chemicals (EDCs) have been detected in surface waters worldwide and can lead to developmental and reproductive disruption in exposed fishes. In the US Great Plains, EDCs are impacting streams and rivers and may be causing adverse reproductive effects. To examine how estrogenic EDCs might affect reproductive success of...
Sapflow and water use of freshwater wetland trees exposed to saltwater incursion in a tidally influenced South Carolina watershed
K. W. Krauss, J.A. Duberstein
2010, Canadian Journal of Forest Research (40) 525-535
Sea-level rise and anthropogenic activity promote salinity incursion into many tidal freshwater forested wetlands. Interestingly, individual trees can persist for decades after salt impact. To understand why, we documented sapflow (Js), reduction in Js with sapwood depth, and water use (F) of baldcypress (Taxodium distichum (L.) Rich.) trees undergoing exposure...
Evaluating the spatiotemporal variations of water budget across China over 1951-2006 using IBIS model
Q. Zhu, H. Jiang, J. Liu, X. Wei, C. Peng, X. Fang, S. Liu, G. Zhou, S. Yu, W. Ju
2010, Hydrological Processes (24) 429-445
The Integrated Biosphere Simulator is used to evaluate the spatial and temporal patterns of the crucial hydrological variables [run-off and actual evapotranspiration (AET)] of the water balance across China for the period 1951–2006 including a precipitation analysis. Results suggest three major findings. First, simulated run-off captured 85% of the spatial...
Environmental drivers of fish functional diversity and composition in the Lower Colorado River Basin
T.K. Pool, J. D. Olden, Joanna B. Whittier, C.P. Paukert
2010, Canadian Journal of Fisheries and Aquatic Sciences (67) 1791-1807
Freshwater conservation efforts require an understanding of how natural and anthropogenic factors shape the present-day biogeography of native and non-native species. This knowledge need is especially acute for imperiled native fishes in the highly modified Lower Colorado River Basin (LCRB), USA. In the present study we employed both a taxonomic...
Relative vulnerability of public supply wells to VOC contamination in hydrologically distinct regional aquifers
Leon J. Kauffman, Francis H. Chapelle
2010, Ground Water Monitoring and Remediation (30) 54-63
A process-based methodology was used to compare the vulnerability of public supply wells tapping seven study areas in four hydrologically distinct regional aquifers to volatile organic compound (VOC) contamination. This method considers (1) contributing areas and travel times of groundwater flowpaths converging at individual supply wells, (2) the oxic and/or...
Assessment of multiple sources of anthropogenic and natural chemical inputs to a morphologically complex basin, Lake Mead, USA
Michael R. Rosen, P. C. Van Metre
2010, Palaeogeography, Palaeoclimatology, Palaeoecology (294) 30-43
Lakes with complex morphologies and with different geologic and land-use characteristics in their sub-watersheds could have large differences in natural and anthropogenic chemical inputs to sub-basins in the lake. Lake Mead in southern Nevada and northern Arizona, USA, is one such lake. To assess variations in chemical histories from 1935...
Do larval fishes exhibit diel drift patterns in a large, turbid river?
K.S. Reeves, D.L. Galat
2010, Journal of Applied Ichthyology (26) 571-577
Previous research suggested larval fishes do not exhibit a diel drift cycle in turbid rivers (transparency <30 cm). We evaluated this hypothesis in the turbid, lower Missouri River, Missouri. We also reviewed diel patterns of larval drift over a range of transparencies in rivers worldwide. Larval fishes were collected from...
Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada
J.B. Paces, L.A. Neymark, J. F. Whelan, J. L. Wooden, S.P. Lund, B.D. Marshall
2010, Earth and Planetary Science Letters (300) 287-298
Understanding the movement of water through thick vadose zones, especially on time scales encompassing long-term climate change, is increasingly important as societies utilize semi-arid environments for both water resources and sites viewed as favorable for long-term disposal or storage of hazardous waste. Hydrologic responses to Pleistocene climate change within a...
Coral Ba/Ca records of sediment input to the fringing reef of the southshore of Moloka'i, Hawai'i over the last several decades
N.G. Prouty, M.E. Field, J. D. Stock, S.D. Jupiter, M. McCulloch
2010, Marine Pollution Bulletin (60) 1822-1835
The fringing reef of southern Moloka’i is perceived to be in decline because of land-based pollution. In the absence of historical records of sediment pollution, ratios of coral Ba/Ca were used to test the hypothesis that sedimentation has increased over time. Baseline Ba/Ca ratios co-vary with the abundance of red,...
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...
Laboratory chalcopyrite oxidation by Acidithiobacillus ferrooxidans: Oxygen and sulfur isotope fractionation
R.S. Thurston, K.W. Mandernack, Wayne C. Shanks III
2010, Chemical Geology (269) 252-261
Laboratory experiments were conducted to simulate chalcopyrite oxidation under anaerobic and aerobic conditions in the absence or presence of the bacterium Acidithiobacillus ferrooxidans. Experiments were carried out with 3 different oxygen isotope values of water (??18OH2O) so that approach to equilibrium or steady-state isotope fractionation for different starting conditions could...
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....
Diviner lunar radiometer observations of cold traps in the moon's south polar region
D. A. Paige, M.A. Siegler, J.A. Zhang, P.O. Hayne, E.J. Foote, K.A. Bennett, A.R. Vasavada, B. T. Greenhagen, J. T. Schofield, D. J. McCleese, M. C. Foote, E. DeJong, B.G. Bills, W. Hartford, B. C. Murray, C. C. Allen, K. Snook, L.A. Soderblom, S. Calcutt, F. W. Taylor, N. E. Bowles, J. L. Bandfield, R. Elphic, R. Ghent, T.D. Glotch, M.B. Wyatt, P. G. Lucey
2010, Science (330) 479-482
Diviner Lunar Radiometer Experiment surface-temperature maps reveal the existence of widespread surface and near-surface cryogenic regions that extend beyond the boundaries of persistent shadow. The Lunar Crater Observation and Sensing Satellite (LCROSS) struck one of the coldest of these regions, where subsurface temperatures are estimated to be 38 kelvin. Large...
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...
Quantifying the behavioral response of spawning chum salmon to elevated discharges from Bonneville Dam, Columbia River, USA
K.F. Tiffan, C. A. Haskell, T.J. Kock
2010, River Research and Applications (26) 87-101
Chum salmon Oncorhynchus keta that spawn in main-stem habitats below Bonneville Dam on the Columbia River, USA, are periodically subjected to elevated discharges that may alter spawning behaviour. We investigated behavioural responses of spawning chum salmon to increased water velocities associated with experimental increases in tailwater elevation using acoustic telemetry...
The effect of channelization on floodplain sediment deposition and subsidence along the Pocomoke River, Maryland
D.E. Kroes, C.R. Hupp
2010, Journal of the American Water Resources Association (46) 686-699
The nontidal Pocomoke River was intensively ditched and channelized by the mid-1900s. In response to channelization; channel incision, head-cut erosion, and spoil bank perforation have occurred in this previously nonalluvial system. Six sites were selected for study of floodplain sediment dynamics in relation to channel condition. Short- and long-term sediment...
Measurement and modeling of polychlorinated biphenyl bioaccumulation from sediment for the marine polychaete neanthes arenaceodentata and response to sorbent amendment
E.M.-L. Janssen, Marie Noele Croteau, S. N. Luoma, R.G. Luthy
2010, Environmental Science & Technology (44) 2857-2863
Bioaccumulation rates of polychlorinated biphenyls (PCBs) for the marine polychaete Neanthes arenaceodentata were characterized, including PCB uptake rates from water and sediment, and the effect of sorbent amendment to the sediment on PCB bioavailability, organism growth, and lipid content. Physiological parameters were incorporated into a biodynamic model to predict contaminant...
Influence of organic carbon loading, sediment associated metal oxide content and sediment grain size distributions upon Cryptosporidium parvum removal during riverbank filtration operations, Sonoma County, CA
D.W. Metge, R.W. Harvey, G. R. Aiken, R. Anders, G. Lincoln, James Jasperse
2010, Water Research (44) 1126-1137
This study assessed the efficacy for removing Cryptosporidium parvum oocysts of poorly sorted, Fe- and Al-rich, subsurface sediments collected from 0.9 to 4.9 and 1.7–13.9 m below land surface at an operating riverbank filtration (RBF) site (Russian River, Sonoma County, CA). Both formaldehyde-killed oocysts and oocyst-sized (3 μm) microspheres were employed in sediment-packed flow-through...
Hydrodynamic modeling of juvenile mussel dispersal in a large river: The potential effects of bed shear stress and other parameters
J.A. Daraio, L.J. Weber, T.J. Newton
2010, Conference Paper, Journal of the North American Benthological Society
Because unionid mussels have a parasitic larval stage, they are able to disperse upstream and downstream as larvae while attached to their host fish and with flow as juveniles after excystment from the host. Understanding unionid population ecology requires knowledge of the processes that affect juvenile dispersal prior to establishment....
Historical deposition of mercury and selected trace elements to high-elevation National Parks in the Western U.S. inferred from lake-sediment cores
M. Alisa Mast, David J. Manthorne, David A. Roth
2010, Atmospheric Environment (44) 2577-2586
Atmospheric deposition of Hg and selected trace elements was reconstructed over the past 150 years using sediment cores collected from nine remote, high-elevation lakes in Rocky Mountain National Park in Colorado and Glacier National Park in Montana. Cores were age dated by 210Pb, and sedimentation rates were determined using the...
