Seasonal variation in sensitivity of larval sea lampreys to the lampricide 3-trifluoromethyl-4-nitrophenol
R.J. Scholefield, K.S. Slaght, B.E. Stephens
2008, North American Journal of Fisheries Management (28) 1609-1617
We evaluated the sensitivity of larval sea lampreys Petromyzon marinus to the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) in a series of toxicity tests in spring and summer. Although noted previously, the seasonal variation in sensitivity to TFM had never been tested as a means of reducing TFM usage in stream treatments. A...
Observations and interpretation of fundamental mode Rayleigh wavefields recorded by the Transportable Array (USArray)
F. F. Pollitz
2008, Journal of Geophysical Research B: Solid Earth (113)
Broadband recordings of the dense Transportable Array (TA) in the western United States provide unparalleled detailed images of long-period seismic surface wavefields. With 400 stations spanning most of the western United States, wavefronts of fundamental mode Rayleigh waves may be visualized coherently across the array at periods ???40 s. In...
Measuring real-time streamflow using emerging technologies: Radar, hydroacoustics, and the probability concept
J. Fulton, J. Ostrowski
2008, Journal of Hydrology (357) 1-10
Forecasting streamflow during extreme hydrologic events such as floods can be problematic. This is particularly true when flow is unsteady, and river forecasts rely on models that require uniform-flow rating curves to route water from one forecast point to another. As a result, alternative methods for measuring streamflow are needed...
Influence of pH on the acute toxicity of ammonia to juvenile freshwater mussels (fatmucket, Lampsills siliquoidea)
N. Wang, R.J. Erickson, C.G. Ingersoll, C.D. Ivey, E.L. Brunson, T. Augspurger, M.C. Barnhart
2008, Environmental Toxicology and Chemistry (27) 1141-1146
The objective of the present study was to evaluate the influence of pH on the toxicity of ammonia to juvenile freshwater mussels. Acute 96-h ammonia toxicity tests were conducted with 10-d-old juvenile mussels (fatmucket, Lampsilis siliquoidea) at five pH levels ranging from 6.5 to 9.0 in flow-through diluter systems at...
Gondwanan/peri-Gondwanan origin for the Uchee terrane, Alabama and georgia: Carolina zone or Suwannee terrane(?) and its suture with Grenvillian basement of the Pine Mountain window
M.G. Steltenpohl, P.M. Mueller, A.L. Heatherington, T.B. Hanley, J. L. Wooden
2008, Geosphere (4) 131-144
The poorly known, suspect, Uchee terrane occupies a critical tectonic position with regard to how and when peri-Gondwanan (Carolina) and Gondwanan (Suwannee) terranes were sutured to Laurentia. It lies sandwiched between Laurentian(?) continental basement exposed in the Pine Mountain window and adjacent buried Gondwanan crust of the Suwannee terrane. The...
Correlation of the Deccan and Rajahmundry Trap lavas: Are these the longest and largest lava flows on Earth?
Stephen Self, Anne E. Jay, Michael Widdowson, Laszlo P. Keszthelyi
2008, Journal of Volcanology and Geothermal Research (172) 3-19
We propose that the Rajahmundry Trap lavas, found near the east coast of peninsular India,are remnants of the longest lava flows yet recognized on Earth (∼ 1000 km long). These outlying Deccan-like lavas are shown to belong to the main Deccan Traps. Several previous studies have already suggested this correlation, but have...
Peat porewater chloride concentration profiles in the Everglades during wet/dry cycles from January 1996 to June 1998: Field measurements and theoretical analysis
M.M. Reddy, M.B. Reddy, K.L. Kipp, A. Burman, Peter Schuster, P.S. Rawlik Jr.
2008, Hydrological Processes (22) 1713-1724
Water quality is a key aspect of the Everglades Restoration Project, the largest water reclamation and ecosystem management project proposed in the United States. Movement of nutrients and contaminants to and from Everglades peat porewater could have important consequences for Everglades water quality and ecosystem restoration activities. In a study...
NMR and mass spectrometry of phosphorus in wetlands
H. El-Rifai, M. Heerboth, T.E. Gedris, S. Newman, W. Orem, W.T. Cooper
2008, European Journal of Soil Science (59) 517-525
There is at present little information on the long-term stability of phosphorus sequestered in wetlands. Phosphorus sequestered during high loading periods may be relatively unstable and easily remobilized following changes in nutrient status or hydrological regime, but the chemical forms of sequestered phosphorus that do remobilize are largely unknown at...
Isotope geochemistry of mercury in source rocks, mineral deposits and spring deposits of the California Coast Ranges, USA
C.N. Smith, S.E. Kesler, J.D. Blum, J. J. Rytuba
2008, Earth and Planetary Science Letters (269) 398-406
We present here the first study of the isotopic composition of mercury in rocks, ore deposits, and active spring deposits from the California Coast Ranges, a part of Earth's crust with unusually extensive evidence of mercury mobility and enrichment. The Franciscan Complex and Great Valley Sequence, which form the bedrock...
Spatial reconstructions and comparisons of historic snow avalanche frequency and extent using tree rings in Glacier National Park, Montana, U.S.A.
B.A. Reardon, G.T. Pederson, C.J. Caruso, D.B. Fagre
2008, Arctic, Antarctic, and Alpine Research (40) 148-160
Natural snow avalanches have periodically damaged infrastructure and disrupted railroad and highway traffic at the southwestern corner of Glacier National Park, Montana. The 94-year history of these disruptions constitutes an uncommon record of natural avalanches spanning over nine decades and presents a unique opportunity to examine how natural avalanche frequency...
Seasonal habitat use of brook trout and juvenile Atlantic Salmon in a Tributary of Lake Ontario
James H. Johnson
2008, Northeastern Naturalist (15) 363-374
The seasonal habitat use of Salvelinus fontinalis (Brook Trout) and sub-yearling Salmo salar (Atlantic Salmon) was examined in Hart Brook, a tributary of Lake Ontario. Fish habitat use and available habitat were examined during summer and autumn. Interspecific differences in habitat use occurred as well as intraspecific seasonal differences. Overyearling Brook Trout were more...
Anthropogenic and natural lead isotopes in Fe-hydroxides and Fe-sulphates in a watershed associated with arsenic-enriched groundwater, Maine, USA
Robert A. Ayuso, Nora K. Foley
2008, Geochemistry: Exploration, Environment, Analysis (8) 77-89
A survey of the natural and anthropogenic sources of lead contributing to secondary minerals in sulphidic schists associated with arsenic-enriched groundwater in Coastal Maine shows that the most likely source is natural Pb, particularly from coexisting sulphide minerals. The secondary minerals also reflect notable contributions from anthropogenic Pb. The Pb...
Prioritizing conservation effort through the use of biological soil crusts as ecosystem function indicators in an arid region
M. A. Bowker, M. E. Miller, J. Belnap, T.D. Sisk, N.C. Johnson
2008, Conservation Biology (22) 1533-1543
Conservation prioritization usually focuses on conservation of rare species or biodiversity, rather than ecological processes. This is partially due to a lack of informative indicators of ecosystem function. Biological soil crusts (BSCs) trap and retain soil and water resources in arid ecosystems and function as major carbon and nitrogen fixers;...
Inactivation of Ichthyophonus spores using sodium hypochlorite and polyvinyl pyrrolidone iodine
P.K. Hershberger, C.A. Pacheco, J.L. Gregg
2008, Journal of Fish Diseases (31) 853-858
Chlorine and iodine solutions were effective at inactivating Ichthyophonus spores in vitro. Inactivation in sea water increased directly with halogen concentration and exposure duration, with significant differences (P < 0.05) from controls occurring at all chlorine concentrations and exposure durations tested (1.5-13.3 ppm for 1-60 min) and at most iodine...
Lake trout demographics in relation to burbot and coregonine populations in the Algonquin Highlands, Ontario
L.M. Carl
2008, Environmental Biology of Fishes (83) 127-138
The objective of the study was to test the hypothesis that lake trout populations change in relation to cisco, lake whitefish, round whitefish and burbot populations in lakes in the Algonquin Highlands region of Ontario. Lake trout population change is greatest where cisco and lake whitefish are present. Lake trout...
Reply to the comment on "Anthropogenic influences on the input and biogeochemical cycling of nutrients and mercury in Great Salt Lake, Utah, USA", by Mae Gustin
D. Naftz, C. Angeroth, T. Kenney, B. Waddell, N. Darnall, S. Silva, C. Perschon, J. Whitehead
2008, Applied Geochemistry (23) 3854-3855
[No abstract available]...
Wind, waves, and wing loading: Morphological specialization may limit range expansion of endangered albatrosses
R.M. Suryan, D.J. Anderson, S.A. Shaffer, D.D. Roby, Y. Tremblay, D.P. Costa, P.R. Sievert, F. Sato, K. Ozaki, G.R. Balogh, N. Nakamura
2008, PLoS ONE (3)
Among the varied adaptations for avian flight, the morphological traits allowing large-bodied albatrosses to capitalize on wind and wave energy for efficient long-distance flight are unparalleled. Consequently, the biogeographic distribution of most albatrosses is limited to the windiest oceanic regions on earth; however, exceptions exist. Species breeding in the North...
Analysis of iron, zinc, selenium and cadmium in paraffin-embedded prostate tissue specimens using inductively coupled plasma mass-spectrometry
A.G. Sarafanov, T.I. Todorov, A. Kajdacsy-Balla, Michael A. Gray, V. MacIas, J.A. Centeno
2008, Journal of Trace Elements in Medicine and Biology (22) 305-314
Formalin-fixed paraffin-embedded (FFPE) tissue specimens represent a valuable and abundant resource of pathologic material for various biomedical studies. In the present study, we report the application of high-resolution inductively coupled mass-spectrometry (ICP-MS) for quantification of Fe, Zn, Se and Cd in FFPE prostate tissue. These elements have a possible role...
Collision tectonics of the Central Indian Suture zone as inferred from a deep seismic sounding study
D.M. Mall, P.R. Reddy, Walter D. Mooney
2008, Tectonophysics (460) 116-123
The Central Indian Suture (CIS) is a mega-shear zone extending for hundreds of kilometers across central India. Reprocessing of deep seismic reflection data acquired across the CIS was carried out using workstation-based commercial software. The data distinctly indicate different reflectivity characteristics northwest and southeast of the CIS. Reflections northwest of...
Trends in abundance of collared lemmings near Cape Churchill, Manitoba, Canada
M.E. Reiter, D. E. Andersen
2008, Journal of Mammalogy (89) 138-144
Regular, multiannual cycles observed in the population abundance of small mammals in many arctic and subarctic ecosystems have stimulated substantial research, particularly among population ecologists. Hypotheses of mechanisms generating regular cycles include predator-prey interactions, limitation of food resources, and migration or dispersal, as well as abiotic factors such as cyclic...
A quantile count model of water depth constraints on Cape Sable seaside sparrows
B.S. Cade, Q. Dong
2008, Journal of Animal Ecology (77) 47-56
1. A quantile regression model for counts of breeding Cape Sable seaside sparrows Ammodramus maritimus mirabilis (L.) as a function of water depth and previous year abundance was developed based on extensive surveys, 1992-2005, in the Florida Everglades. The quantile count model extends linear quantile regression methods to discrete response...
Characterization of errors in a coupled snow hydrology-microwave emission model
K.M. Andreadis, D. Liang, L. Tsang, D.P. Lettenmaier, E.G. Josberger
2008, Journal of Hydrometeorology (9) 149-164
Traditional approaches to the direct estimation of snow properties from passive microwave remote sensing have been plagued by limitations such as the tendency of estimates to saturate for moderately deep snowpacks and the effects of mixed land cover within remotely sensed pixels. An alternative approach is to assimilate satellite microwave...
Geologic, geomorphic, and meteorological aspects of debris flows triggered by Hurricanes Frances and Ivan during September 2004 in the Southern Appalachian Mountains of Macon County, North Carolina (southeastern USA)
R.M. Wooten, K.A. Gillon, A.C. Witt, R.S. Latham, T.J. Douglas, J.B. Bauer, S.J. Fuemmeler, L.G. Lee
2008, Landslides (5) 31-44
In September 2004, rain from the remnants of Hurricanes Frances and Ivan triggered at least 155 landslides in the Blue Ridge Mountains of North Carolina. At least 33 debris flows occurred in Macon County, causing 5 deaths, destroying 16 homes, and damaging infrastructure. We mapped debris flows and debris deposits...
Contamination status and accumulation profiles of organotins in sea otters (Enhydra lutris) found dead along the coasts of California, Washington, Alaska (USA), and Kamchatka (Russia)
S. Murata, S. Takahashi, T. Agusa, N. J. Thomas, K. Kannan, S. Tanabe
2008, Marine Pollution Bulletin (56) 641-649
Organotin compounds (OTs) including mono- to tri-butyltins, -phenyltins, and -octyltins were determined in the liver of adult sea otters (Enhydra lutris) found dead along the coasts of California, Washington, and Alaska in the USA and Kamchatka, Russia. Total concentrations of OTs in sea otters from California ranged from 34 to...
Investigation and hazard assessment of the 2003 and 2007 Staircase Falls rock falls, Yosemite National Park, California, USA
G. F. Wieczorek, Gregory M. Stock, P. Reichenbach, J.B. Snyder, J. W. Borchers, J. W. Godt
2008, Natural Hazards and Earth System Sciences (8) 421-432
Since 1857 more than 600 rock falls, rock slides, debris slides, and debris flows have been documented in Yosemite National Park, with rock falls in Yosemite Valley representing the majority of the events. On 26 December 2003, a rock fall originating from west of Glacier Point sent approximately 200 m...
