Visitor and community survey results for Prime Hook National Wildlife Refuge: Completion report
Natalie R. Sexton, Susan C. Stewart, Lynne Koontz, Phadrea Ponds, Katherine D. Walters
2007, Open-File Report 2007-1239
This study was commissioned by the Northeast Region of the U.S. Fish and Wildlife Service (USFWS) in support of the Comprehensive Conservation Planning at Prime Hook National Wildlife Refuge (Prime Hook NWR or Refuge). The National Wildlife Refuge Improvement Act of 1997 (Public Law 105-57, USC668dd) mandates a Comprehensive Conservation...
Uptake, elimination, and relative distribution of perchlorate in various tissues of channel catfish
J. W. Park, C.M. Bradford, J. Rinchard, F. Liu, M. Wages, A. Waters, R.J. Kendall, T.A. Anderson, C.W. Theodorakis
2007, Environmental Science & Technology (41) 7581-7586
This study was undertaken to determine the kinetics of uptake and elimination of perchlorate in channel catfish, Ictalurus punctatus. Perchlorate - an oxidizer used in solid fuel rockets, fireworks, and illuminating munitions - has been shown to effect thyroid function, causing hormone disruption and potential perturbations of metabolic activities. For...
Drying temperature effects on fish dry mass measurements
B.F. Lantry, R. O'Gorman
2007, Journal of Great Lakes Research (33) 606-616
Analysis of tissue composition in fish often requires dry samples. Time needed to dry fish decreases as temperature is increased, but additional volatile material may be lost. Effects of 10??C temperature increases on percentage dry mass (%DM) were tested against 60??C controls for groups of lake trout Salvelinus namaycush, rainbow...
The chemical response of particle-associated contaminants in aquatic sediments to urbanization in New England, U.S.A.
A.T. Chalmers, P. C. Van Metre, E. Callender
2007, Journal of Contaminant Hydrology (91) 4-25
Relations between urbanization and particle-associated contaminants in New England were evaluated using a combination of samples from sediment cores, streambed sediments, and suspended stream sediments. Concentrations of PAHs, PCBs, DDT, and seven trace metals (Cd, Cr, Cu, Hg, Ni, Pb, Zn) were correlated strongly with urbanization, with the strongest relations...
Shell-free biomass and population dynamics of dreissenids in offshore Lake Michigan, 2001-2003
J. R. P. French III, J.V. Adams, J. Craig, R.G. Stickel, S. J. Nichols, G.W. Fleischer
2007, Journal of Great Lakes Research (33) 536-545
The USGS-Great Lakes Science Center has collected dreissenid mussels annually from Lake Michigan since zebra mussels (Dreissena polymorpha) became a significant portion of the bottom-trawl catch in 1999. For this study, we investigated dreissenid distribution, body mass, and recruitment at different depths in Lake Michigan during 2001-2003. The highest densities...
Ground water stratification and delivery of nitrate to an incised stream under varying flow conditions
John Karl Bohlke, M. E. O’Connell, K.L. Prestegaard
2007, Journal of Environmental Quality (36) 664-680
Ground water processes affecting seasonal variations of surface water nitrate concentrations were investigated in an incised first-order stream in an agricultural watershed with a riparian forest in the coastal plain of Maryland. Aquifer characteristics including sediment stratigraphy, geochemistry, and hydraulic properties were examined in combination with chemical and isotopic analyses...
1400 yr multiproxy record of climate variability from the northern Gulf of Mexico
J.N. Richey, R.Z. Poore, B.P. Flower, T. M. Quinn
2007, Geology (35) 423-426
A continuous decadal-scale resolution record of climate variability over the past 1400 yr in the northern Gulf of Mexico was constructed from a box core recovered in the Pigmy Basin, northern Gulf of Mexico. Proxies include paired analyses of Mg/Ca and δ18O in the white variety of the planktic foraminifer...
Bed forms created by simulated waves and currents in a large flume
Jessica R. Lacy, David M. Rubin, Hiroshi Ikeda, Kuniyasu Mokudai, Daniel M. Hanes
2007, Journal of Geophysical Research C: Oceans (112)
The morphology and evolution of bed forms created by combinations of waves and currents were investigated using an oscillating plate in a 4-m-wide flume. Current speed ranged from 0 to 30 cm/s, maximum oscillatory velocity ranged from 20 to 48 cm/s, oscillation period was 8 s (except for one run...
Winter behavior and ecology of the Alder Flycatcher (Empidonax alnorum) in Peru
M.S. Foster
2007, Ornitologia Neotropical (18) 171-186
The winter ecology and behavior of Alder Flycatchers (Empidonax alnorum) were studied along the Manu, a white-water meander river in Manu National Park, Madre de Dios, Peru?? during October and November, 1993 to 1997. The birds occupied territories in primary-succession habitats on growing point bars. They were most common in...
A biological assessment of streams in the eastern United States using a predictive model for macroinvertebrate assemblages
D.M. Carlisle, M. R. Meador
2007, Journal of the American Water Resources Association (43) 1194-1207
A predictive model (RIVPACS-type) for benthic macroinvertebrates was constructed to assess the biological condition of 1,087 streams sampled throughout the eastern United States from 1993-2003 as part of the U.S. Geological Survey's National Water-Quality Assessment Program. A subset of 338 sites was designated as reference quality, 28 of which were...
Geotechnical reconnaissance of the Mississippi River Delta flood-protection system after Hurricane Katrina
Ronaldo Luna, David Summers, David Hoffman, J. David Rogers, Adam Sevi, Emitt C. Witt III
2007, Circular 1306-3C
This article presents the post-Hurricane Katrina conditions of the flood-protection system of levees and floodwalls that failed in the environs of the Mississippi River Delta and New Orleans, La. Damage conditions and suggested mechanisms of failure are presented from the geotechnical point of view....
Dynamics of newly established elk populations
G.A. Sargeant, M.W. Oehler Sr.
2007, Journal of Wildlife Management (71) 1141-1148
The dynamics of newly established elk (Cervus elaphus) populations can provide insights about maximum sustainable rates of reproduction, survival, and increase. However, data used to estimate rates of increase typically have been limited to counts and rarely have included complementary estimates of vital rates. Complexities of population dynamics cannot be...
Differential expression and localization of four connexins in the ovary of the ayu (Plecoglossus Altivelis)
Y. Yamamoto, G. Yoshizaki, T. Takeuchi, K. Soyano, F. Itoh, R. Patino
2007, Molecular Reproduction and Development (74) 1113-1123
The post-vitellogenic oocytes of teleost fish are generally unresponsive to maturation-inducing hormone (MIH) until a luteinizing hormone (LH) surge stimulates sensitivity via the acquisition of oocyte-maturational competence (OMC). Heterologous gap junctions (GJs) between granulosa cells and the oocyte have been previously implicated in the regulation of oocyte maturation in various...
Molecular mechanisms of continuous light inhibition of Atlantic salmon parr-smolt transformation
S.O. Stefansson, Tom O. Nilsen, Lars O.E. Ebbesson, A. Wargelius, Steffen S. Madsen, B. Th Bjornsson, S. D. McCormick
2007, Aquaculture (273) 235-245
Atlantic salmon (Salmo salar) rely on changes in photoperiod for the synchronization of the developmental events constituting the parr-smolt transformation. In the absence of photoperiod cues, parr-smolt transformation is incomplete, and such 'pseudo-smolts' normally fail to adapt to seawater. The present study addresses the endocrine and molecular mechanisms controlling the...
Microearthquake streaks and seismicity triggered by slow earthquakes on the mobile south flank of Kilauea Volcano, Hawai'i
Cecily J. Wolfe, Benjamin A. Brooks, James H. Foster, Paul G. Okubo
2007, Geophysical Research Letters (34)
We perform waveform cross correlation and high precision relocation of both background seismicity and seismicity triggered by periodic slow earthquakes at Kilauea Volcano's mobile south flank. We demonstrate that the triggered seismicity dominantly occurs on several preexisting fault zones at the Hilina region. Regardless of the velocity model employed, the...
Sensitivity of estuarine turbidity maximum to settling velocity, tidal mixing, and sediment supply
J.C. Warner, C. R. Sherwood, W.R. Geyer
Maa J.P.Y.Sanford L.P.Schoellhamer D.H., editor(s)
2007, Proceedings in Marine Science (8) 355-376
Estuarine turbidity maximum, numerical modeling, settling velocity, stratification The spatial and temporal distribution of suspended material in an Estuarine Turbidity Maxima (ETM) is primarily controlled by particle settling velocity, tidal mixing, shear-stress thresholds for resuspension, and sediment supply. We vary these parameters in numerical experiments of an idealized two-dimensional (x-z)...
Thirty-one years of debris-flow observation and monitoring near La Honda, California, USA
G. F. Wieczorek, R. C. Wilson, S. D. Ellen, M.E. Reid, A. S. Jayko
2007, Conference Paper, International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings
From 1975 until 2006,18 intense storms triggered at least 248 debris flows within 10 km2 northwest of the town of La Honda within the Santa Cruz Mountains, California. In addition to mapping debris flows and other types of landslides, studies included soil sampling and geologic mapping, piezometric and tensiometer monitoring,...
Spatial and temporal migration patterns of Wilson's Warbler (Wilsonia pusilla) in the southwest as revealed by stable isotopes
K.L. Paxton, Charles van Riper III, T.C. Theimer, E. H. Paxton
2007, The Auk (124) 162-175
We used stable hydrogen isotopes (δD) to identify the breeding locations of Wilson’s Warbler (Wilsonia pusilla) migrating through five sites spanning a cross-section of the species’ southwestern migration route during the springs of 2003 and 2004. Determining the temporal and spatial patterns of migration and degree of population segregation during...
Chronology of Miocene-Pliocene deposits at Split Mountain Gorge, Southern California: A record of regional tectonics and Colorado River evolution
R.J. Dorsey, A. Fluette, K. McDougall, B.A. Housen, S. U. Janecke, G.J. Axen, C.R. Shirvell
2007, Geology (35) 57-60
Late Miocene to early Pliocene deposit at Split Mountain Gorge, California, preserve a record of basinal response to changes in regional tectonics, paleogeography, and evolution of the Colorado River. The base of the Elephant Trees Formation, magnetostratigraphically dated as 8.1 ?? 0.4 Ma, provides the earliest well-dated record of extension...
The geology of asbestos in the United States and its practical applications
B. S. Van Gosen
2007, Environmental & Engineering Geoscience (13) 55-68
Recently, naturally occurring asbestos (NOA) has drawn the attention of numerous health and regulatory agencies and citizen groups. NOA can be released airborne by (1) the disturbance of asbestos-bearing bedrocks through human activities or natural weathering, and (2) the mining and milling of some mineral deposits in which asbestos occurs...
Morphological variation of siscowet lake trout in Lake Superior
C.R. Bronte, S.A. Moore
2007, Transactions of the American Fisheries Society (136) 509-517
Historically, Lake Superior has contained many morphologically distinct forms of the lake trout Salvelinus namaycush that have occupied specific depths and locations and spawned at specific times of the year. Today, as was probably the case historically, the siscowet morphotype is the most abundant. Recent interest in harvesting siscowets to extract oil...
Toward a transport-based analysis of nutrient spiraling and uptake in streams
Robert L. Runkel
2007, Limnology and Oceanography: Methods (5) 50-62
Nutrient addition experiments are designed to study the cycling of nutrients in stream ecosystems where hydrologic and nonhydrologic processes determine nutrient fate. Because of the importance of hydrologic processes in stream ecosystems, a conceptual model known as nutrient spiraling is frequently employed. A central part of the nutrient spiraling approach...
A multi-scale segmentation approach to filling gaps in Landsat ETM+ SLC-off images
S.K. Maxwell, Gail L. Schmidt, James C. Storey
2007, International Journal of Remote Sensing (28) 5339-5356
On 31 May 2003, the Landsat Enhanced Thematic Plus (ETM+) Scan Line Corrector (SLC) failed, causing the scanning pattern to exhibit wedge-shaped scan-to-scan gaps. We developed a method that uses coincident spectral data to fill the image gaps. This method uses a multi-scale segment model, derived from a previous Landsat...
Northeast Kansas well tests oil, gas possibilities in Precambrian rocks
D. F. Merriam, K.D. Newell, J.H. Doveton, L.M. Magnuson, B.S. Lollar, W.M. Waggoner
2007, Oil & Gas Journal (105) 54-58
Tests for oil and gas prospects in Precambrian rocks in Northeast Kansas is currently being undertaken by WTW Operating LLC. It drilled in late 2005 the no.1 Wilson well with a depth of 5,772ft, 1,826ft into the Precambrian basement on a venture testing the possibility of oil and gas in...
Intra- and interlaboratory variability in acute toxicity tests with glochidia and juveniles of freshwater mussels (Unionidae)
N. Wang, T. Augspurger, M.C. Barnhart, Joseph R. Bidwell, W.G. Cope, F.J. Dwyer, S. Geis, I.E. Greer, C.G. Ingersoll, C.M. Kane, T.W. May, R. J. Neves, T.J. Newton, A.D. Roberts, D.W. Whites
2007, Environmental Toxicology and Chemistry (26) 2029-2035
The present study evaluated the performance and variability in acute toxicity tests with glochidia and newly transformed juvenile mussels using the standard methods outlined in American Society for Testing and Materials (ASTM). Multiple 48-h toxicity tests with glochidia and 96-h tests with juvenile mussels were conducted within a single laboratory...
