Hatching success in salamanders and chorus frogs at two sites in Colorado, USA: Effects of acidic deposition and climate
E. Muths, K. Campbell, P.S. Corn
2003, Amphibia-Reptilia (24) 27-36
The snowpack in the vicinity of the Mount Zirkel Wilderness Area is among the most acidic in the western United States. We analyzed water chemistry and examined hatching success in tiger salamanders and chorus frogs at ponds there and at nearby Rabbit Ears Pass (Dumont) to determine whether acid deposition...
Lake Clark sockeye salmon population assessment
Carol Ann Woody, Kristina M. Ramstad, Daniel B. Young, G. Kevin Sage, Fred W. Allendorf
2003, Report
Radio telemetry was used to identify and map sockeye salmon spawning habitats in glacially influenced Lake Clark, Kvichak River watershed, Alaska. Two hundred eighty-two adult sockeye salmon were radio tagged and tracked to spawning grounds. Thirty-five spawning areas were identified, including 18 previously unidentified. Comparison of radio telemetry data with...
Identification of linear and threshold responses in streams along a gradient of urbanization in Anchorage, Alaska
Robert T. Ourso, S.A. Frenzel
2003, Hydrobiologia (501) 117-131
We examined biotic and physiochemical responses in urbanized Anchorage, Alaska, to the percent of impervious area within stream basins, as determined by high-resolution IKONOS satellite imagery and aerial photography. Eighteen of the 86 variables examined, including riparian and instream habitat, macroinvertebrate communities, and water/sediment chemistry, were significantly correlated with percent...
Ecology of selected marine communities in Glacier Bay: Zooplankton, forage fish, seabirds and marine mammals
Martin D. Robards, Gary S. Drew, John F. Piatt, Jennifer Marie Anson, Alisa A. Abookire, James L. Bodkin, Philip N. Hooge, Suzann G. Speckman
2003, Report
We studied oceanography (including primary production), secondary production, small schooling fish (SSF), and marine bird and mammal predators in Glacier Bay during 1999 and 2000. Results from these field efforts were combined with a review of current literature relating to the Glacier Bay environment. Since the conceptual model developed by...
Lead isotopes in North Pacific deep water - Implications for past changes in input sources and circulation patterns
T. van de Flierdt, M. Frank, A. N. Halliday, J.R. Hein, B. Hattendorf, D. Gunther, P.W. Kubik
2003, Earth and Planetary Science Letters (209) 149-164
The sources of non-anthropogenic Pb in seawater have been the subject of debate. Here we present Pb isotope time-series that indicate that the non-anthropogenic Pb budget of the northernmost Pacific Ocean has been governed by ocean circulation and riverine inputs, which in turn have ultimately been controlled by tectonic processes....
An approach for mapping large-area impervious surfaces: Synergistic use of Landsat-7 ETM+ and high spatial resolution imagery
Limin Yang, Chengquan Huang, Collin G. Homer, Bruce K. Wylie, Michael Coan
2003, Canadian Journal of Remote Sensing (29) 230-240
A wide range of urban ecosystem studies, including urban hydrology, urban climate, land use planning, and resource management, require current and accurate geospatial data of urban impervious surfaces. We developed an approach to quantify urban impervious surfaces as a continuous variable by using multisensor and multisource datasets. Subpixel percent impervious...
Habitat heterogeneity on a forest-savanna ecotone in Noel Kempff Mercado National Park (Santa Cruz, Bolivia)—implications for the long-term conservation of biodiversity in a changing climate
T.J. Killeen, T.M. Siles, T. Grimwood, L.L. Tieszen, M.K. Steininger, C.J. Tucker, S. Panfil
G.A. Bradshaw, P.A. Marquet, K.L. Ronnenberg, editor(s)
2003, Book chapter, How landscapes change— Human disturbance and ecosystem fragmentation in the Americas
No abstract available....
General procedures for bacteriology
D.G. Elliott
2003, Book chapter, Suggested procedures for the detection and identification of certain finfish and shellfish pathogens
No abstract available ...
Elevated lateral stress in unlithified sediment, Midcontinent, United States - geotechnical and geophysical indicators for a tectonic origin
E.W. Woolery, J.A. Schaefer, Z. Wang
2003, Tectonophysics (368) 139-153
Indirect and direct geotechnical measurements revealed the presence of high lateral earth pressure (Ko) in shallow, unlithified sediment at a site in the northernmost Mississippi embayment region of the central United States. Results from pile-load and pressuremeter tests showed maximum Ko values greater than 10; however, the complex geologic environment...
[Book Review] Biology of marine birds
Patrick G.R. Jodice, Daniel D. Roby, Michelle Antolos, Donald E. Lyons, Daniel Rizzolo, Sadie K. Wright, Cynthia D. Anderson, Scott K. Anderson, S. Kim Nelson, Adrian E. Gall, Liv Wennerberg
2003, The Auk (120) 240-245
A text devoted to the biology and ecology of marine birds has not been published in the last 15 years. Although a number of more taxa-specific texts have been produced during that period, there has not been a single publication that attempted to review our knowledge of all the major...
Two-dimensional inverse and three-dimensional forward modeling of MT (magnetotelluric) data to evaluate the mineral potential of the Amphitheater Mountains, Alaska, USA
Louise Pellerin, Jeanine M. Schmidt, G. Michael Hoversten
2003, Conference Paper, Proceedings of the 3DEM-3 symposium: Three dimensional electromagnetics III: ASEG Special Publications 2003(1)
As part of an integrated geological and geophysical study to assess the mineral potential in the Amphitheater Mountains of south-central Alaska, USA, two magnetotelluric (MT) profiles were acquired during the summer of 2002. The two parallel MT lines, along with helicopter electromagnetic (HEM) and magnetic data acquired by the State...
Numerical simulation of tsunami generation by pryoclastic flow at Aniakchak Volcano, Alaska
C. F. Waythomas, P. Watts
2003, Geophysical Research Letters (30)
Pyroclastic flows entering the sea are plausible mechanisms for tsunami generation at volcanic island arcs worldwide. We evaluate tsunami generation by pyroclastic flow using an example from Aniakchak volcano in Alaska where evidence for tsunami inundation coincident with a major, caldera-forming eruption of the volcano ca. 3.5 ka has been...
Morphological impacts of extreme storms on sandy beaches and barriers
R.A. Morton, A. H. Sallenger Jr.
2003, Journal of Coastal Research (19) 560-573
Historical extreme storms that struck the Gulf Coast and Atlantic Coast regions of the United States caused several different styles of morphological response and resulted in a wide range of washover penetration distances. The post- storm erosional responses included dune scarps, channel incisions, and washouts, whereas depositional responses included perched...
Spring viremia of carp
A.E. Goodwin, J. R. Winton
2003, Book chapter, Suggested procedures for the detection and identification of certain finfish and shellfish pathogens
No abstract available ...
Coupled heat and fluid flow modeling of the Carboniferous Kuna Basin, Alaska: Implications for the genesis of the Red Dog Pb-Zn-Ag-Ba ore district
G. Garven, Jeff P. Raffensperger, Julie A. Dumoulin, D.A. Bradley, L. E. Young, K.D. Kelley, D. L. Leach
2003, Conference Paper, Journal of Geochemical Exploration
The Red Dog deposit is a giant 175 Mton (16% Zn, 5% Pb), shale-hosted Pb-Zn-Ag-Ba ore district situated in the Carboniferous Kuna Basin, Western Brooks Range, Alaska. These SEDEX-type ores are thought to have formed in calcareous turbidites and black mudstone at elevated sub-seafloor temperatures (120-150??C) within a hydrogeologic framework...
The Impact of Turtle Excluder Devices and Fisheries Closures on Loggerhead and Kemp's Ridley Strandings in the Western Gulf of Mexico
R.L. Lewison, L.B. Crowder, D.J. Shaver
2003, Conservation Biology (17) 1089-1097
The Sea Turtle Stranding and Salvage Network has been monitoring turtle strandings for more than 20 years in the United States. High numbers of strandings in the early to mid-1980s prompted regulations to require turtle excluder devices (TEDs) on shrimping vessels (trawlers). Following year-round TED implementation in 1991, however, stranding...
Chemical analyses of pore water from boreholes USW SD-6 and USW WT-24, Yucca Mountain, Nevada
I.C. Yang, Z. E. Peterman, K.M. Scofield
2003, Journal of Contaminant Hydrology (62-63) 361-380
Analyses of pore water extracted from cores of boreholes USW SD-6 in the central part and USW WT-24 in the northern part of Yucca Mountain, Nevada, show significant vertical and lateral variations in dissolved-ion concentrations. Analyses of samples of only a few milliliters of pore water extracted by uniaxial or...
Monitoring the coral disease, plague type II, on coral reefs in St. John, U.S. Virgin Islands
J. Miller, C. Rogers, R. Waara
2003, Conference Paper, Revista de Biologia Tropical
In July 1997, conspicuous white patches of necrotic tissue and bare skeleton began to appear on scleractinian corals in several bays around St. John, US Virgin Islands. Analysis of diseased coral tissue from five different species confirmed the presence of a Sphingomonas-like bacterium, the pathogen for plague type II. To...
Occurrence of endocrine-disrupting and other wastewater compunds during water treatment with case studies from Lincoln, Nebraska and Berlin, Germany
Ingrid M. Verstraeten, T. Heberer, J. R. Vogel, T. Speth, S. Zuehlke, U. Duennbier
2003, Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management (7) 253-263
Research on the fate and transport of endocrine-disrupting compounds and other organic wastewater compounds released into the environment and their potential presence in drinking water is in its infancy. Studies conducted during the last decade in Lincoln, Nebraska, and Berlin, Germany, indicate that removal of less polar compounds probably can...
Mobile fishing gear reduces benthic megafaunal production on Georges Bank
J.M. Hermsen, J.S. Collie, P. C. Valentine
2003, Marine Ecology Progress Series (260) 97-108
This study addresses the effect of mobile fishing gear disturbance on benthic megafaunal production on the gravel pavement of northern Georges Bank. From 1994 to 2000, we sampled benthic megafauna with a 1 m Naturalists' dredge at shallow (47 to 62 m) and deep (80 to 90 m) sites. The...
Empirical ground-motion relations for subduction-zone earthquakes and their application to Cascadia and other regions
G. M. Atkinson, D.M. Boore
2003, Bulletin of the Seismological Society of America (93) 1703-1729
Ground-motion relations for earthquakes that occur in subduction zones are an important input to seismic-hazard analyses in many parts of the world. In the Cascadia region (Washington, Oregon, northern California, and British Columbia), for example, there is a significant hazard from megathrust earthquakes along the subduction interface and from large...
A vegetation history from the arid prepuna of northern Chile (22-23°S) over the last 13,500 years
Claudio Latorre, Julio L. Betancourt, Kate A. Rylander, Jay Quade, Oscar Matthei
2003, Palaeogeography, Palaeoclimatology, Palaeoecology (194) 223-246
The Quaternary paleoclimate of the central Andes is poorly understood due to numerous discrepancies among the diverse proxy records that span this geographically and climatically complex region. The exact timing, duration and magnitude of wet and dry phases are seldom duplicated from one proxy type to another, and there have...
Fin development in stream- and hatchery-reared Atlantic salmon
Ryan M. Pelis, S. D. McCormick
2003, Aquaculture (220) 525-536
To determine the effect of development and environment on fin growth, we measured fin lengths of juvenile Atlantic salmon (Salmo salar) from two hatcheries (August, October and April-May), stream-reared fish (July and October) stocked as fry into two tributaries, and smelts from the main stem of the Connecticut River (May)....
Bayesian Estimations of Peak Ground Acceleration and 5% Damped Spectral Acceleration from Modified Mercalli Intensity Data
J.E. Ebel, D.J. Wald
2003, Earthquake Spectra (19) 511-529
We describe a new probabilistic method that uses observations of modified Mercalli intensity (MMI) from past earthquakes to make quantitative estimates of ground shaking parameters (i.e., peak ground acceleration, peak ground velocity, 5% damped spectral acceleration values, etc.). The method uses a Bayesian approach to make quantitative estimates of the...
The role of climate and vegetation change in shaping past and future fire regimes in the northwestern US and the implications for ecosystem management
C. Whitlock, S.L. Shafer, J. Marlon
2003, Conference Paper, Forest Ecology and Management
Fire is an important part of the disturbance regimes of northwestern US forests and its role in maintaining and altering forest vegetation is evident in the paleoecological record of the region. Long-term reconstructions of Holocene fire regimes, provided by the analysis of charcoal, pollen, and other fire proxies in a...
