Snow cover and snow goose Anser caerulescens caerulescens distribution during spring migration
Jerry W. Hupp, Amy B. Zacheis, R. Michael Anthony, Donna G. Robertson, Wallace P. Erickson, Kelly C. Palacios
2001, Wildlife Biology (7) 65-76
Arctic geese often use spring migration stopover areas when feeding habitats are partially snow covered. Melting of snow during the stopover period causes spatial and temporal variability in distribution and abundance of feeding habitat. We recorded changes in snow cover and lesser snow goose Anser caerulescens caerulescens distribution on a...
Enantiomeric composition of chiral polychlorinated biphenyl atropisomers in aquatic and riparian biota
C.S. Wong, A.W. Garrison, P.D. Smith, W.T. Foreman
2001, Environmental Science & Technology (35) 2448-2454
The enantiomeric composition of polychlorinated biphenyl (PCB) atropisomers was measured in river and riparian biota (fish, bivalves, crayfish, water snakes, barn swallows) from selected sites throughout the United States by using chiral gas chromatography/mass spectrometry. Nonracemic enantiomeric fractions (EFs) were observed for PCBs 91, 95, 136, and 149 for aquatic...
The effect of mining and related activities on the sediment-trace element geochemistry of Lake Coeur d'Alene, Idaho, USA. Part III. Downstream effects: The Spokane River Basin
C.A. Grosbois, A. J. Horowitz, J.J. Smith, K. A. Elrick
2001, Hydrological Processes (15) 855-875
During 1998/1999, surface and subsurface sediment samples were collected along the entire length of the Spokane River from its outlet at the northern end of Lake Coeur d'Alene (CDA), Idaho, to Lake Roosevelt on the Columbia River, Washington. The study was conducted to determine if the trace element enrichments observed...
Olfactory sensitivity of Pacific lampreys to petromyzonol sulfate. Annual report 2000
J.M. Bayer, J.G. Seelye
2001, Report
Abstract not available ...
Biological evaluation of the behavioral guidance structure at Lower Granite dam on the Snake River, Washington in 1998
N.S. Adams, G. E. Johnson, D.W. Rondorf, S.M. Anglea, T. Wik
2001, Book chapter, Behavioral technologies for fish guidance: Symposium 26
Abstract not available...
Does fluctuating asymmetry of antlers in white-tailed deer (Odocoileus virginianus) follow patterns predicted for sexually selected traits?
S.S. Ditchkoff, R.L. Lochmiller, R.E. Masters, W.R. Starry, David M. Leslie Jr.
2001, Proceedings of the Royal Society B: Biological Sciences (268) 891-898
Secondary sexual characters have been hypothesized to signal male quality and should demonstrate a negative relationship between the size of the trait and degree of fluctuating asymmetry because they are costly to produce. We collected morphometric and antler data from 439 white-tailed deer (Odocoileus virginianus) in Oklahoma, USA, in order...
Swimming performance and exhaustive stress in Pacific lampreys (Lampetra tridentata): implications for upstream migrations past dams
M.G. Mesa, J.M. Bayer, J.G. Seelye, L.K. Weiland
2001, Report
Abstract not available...
Quaternary geology, Cold Bay and False Pass quadrangles, Alaska Peninsula
Frederic H. Wilson, Florence R. Weber
2001, Report, Geologic studies in Alaska by the U.S. Geological Survey, 1999
Recent mapping and interpretation of Quaternary geologic features has improved our understanding of the interaction between volcanic, glacial, and tectonic activity in the Cold Bay and False Pass 1:250,000-scale quadrangles on the Alaska Peninsula. The glacial and volcanic record of the map area strongly suggests that continental-shelf glaciations and two...
Remote identification of polar bear maternal den habitat in northern Alaska
George M. Durner, Steven C. Amstrup, Ken J. Ambrosius
2001, Arctic (54) 115-121
Polar bears (Ursus maritimus) give birth in dens of ice and snow to protect their altricial young. During the snow-free season, we visited 25 den sites located previously by radiotelemetry and characterized the den site physiognomy. Seven dens occurred in habitats with minimal relief. Eighteen dens (72%) were in coastal...
Enantiomeric composition of chiral polychlorinated biphenyl atropisomers in aquatic bed sediment
C.S. Wong, A.W. Garrison, W.T. Foreman
2001, Environmental Science & Technology (35) 33-39
Enantiomeric ratios (ERs) for eight polychlorinated biphenyl (PCB) atropisomers were measured in aquatic sediment from selected sites throughout the United States by using chiral gas chromatography/mass spectrometry. Nonracemic ERs for PCBs 91, 95, 132, 136, 149, 174, and 176 were found in sediment cores from Lake Hartwell, SC, which confirmed...
Identification of changes in streamflow characteristics
J. D. Bales, B.F. Pope
2001, Journal of the American Water Resources Association (37) 91-104
A set of procedures for identifying changes in selected streamflow characteristics at sites having long-term continuous streamflow records is illustrated by using streamflow data from the Waccamaw River at Freeland, North Carolina for the 55-year period of 1940-1994. Data were evaluated and compared to streamflows in the adjacent Lumber River...
Proposed standard-weight (Ws) equation and length-categorization standards for brown trout (Salmo trutta) in lentic habitats
M.W. Hyatt, W.A. Hubert
2001, Journal of Freshwater Ecology (16) 53-56
We developed a standard-weight (Ws) equation for brown trout (Salmo trutta) in lentic habitats by applying the regression-line-percentile technique to samples from 49 populations in North America. The proposed Ws equation is log10 Ws = −5.422 + 3.194 log10 TL, when Ws is in grams and TL is total length in millimeters. The English-unit...
Survival estimates of migrant juvenile salmonids in the Columbia River from John Day Dam through Bonneville Dam using radio-telemetry. Annual report 2000
T.D. Counihan, J.H. Petersen
2001, Report
Abstract not available...
Upstream migration of Pacific lampreys in the John Day River: behavior, timing and habitat use. Presentation of research 2000
J.M. Bayer, T.C. Robinson, J.G. Seelye
2001, Report
Abstract not available...
Identification of larval Pacific lampreys (Lampetra tridentata), river lampreys (L. ayresi), and western brook lampreys (L. richardsoni) and thermal requirements of early life history stages of lampreys
J.M. Bayer, M.H. Meeuwig, J.G. Seelye
2001, Report
Abstract not available...
Monthly fractional green vegetation cover associated with land cover classes of the conterminous USA
Kevin P. Gallo, Dan Tarpley, Ken Mitchell, Ivan Csiszar, Tobias Owen, Bradley C. Reed
2001, Geophysical Research Letters (28) 2089-2092
The land cover classes developed under the coordination of the International Geosphere-Biosphere Programme Data and Information System (IGBP-DIS) have been analyzed for a study area that includes the Conterminous United States and portions of Mexico and Canada. The 1-km resolution data have been analyzed to produce a gridded data set...
[Book review] Environmental change in mountains and uplands, by Martin Beniston
Jill Baron
2001, Eos, Transactions, American Geophysical Union (82) 30-30
Review of: Environmental Change in Mountains and Uplands. Martin Beniston. ISBN13: 9780340706367, ISBN10: 0340706368. Paperback, 192 pages. May 2000....
Factors influencing the nitrification efficiency of fluidized bed filter with a plastic bead medium
S. I. Sandu, G. D. Boardman, Barnaby J. Watten, B. L. Brazil
2001, Aquacultural Engineering (26) 41-59
The performance of fluidized bed nitrification filters charged with 2×4 ABS plastic beads (specific gravity 1.06) was evaluated. Three unique bed-height to diameter ratios were established, in triplicate, using column diameters of 12.7, 15.2 and 17.8 cm. Filters received water spiked with recycled nutrients and ammonia (TAN), from one of...
Corticosterone facilitates begging and affects resource allocation in the black-legged kittiwake
Alexander S Kitaysky, John C. Wingfield, John F. Piatt
2001, Behavioral Ecology (12) 619-625
Parent black-legged kittiwakes (Rissa tridactyla) and their dependent chicks respond to food shortages by increasing circulating levels of corticosterone. To examine the behavioral significance of corticosterone release, we experimentally increased levels of circulating corticosterone in parents and chicks up to the levels observed during food shortages. We found that corticosterone-implanted...
[Book review] A Review and Synthesis of Effects of Alterations to the Water Temperature Regime on Freshwater Life Stages of Salmonids, with Special Reference to Chinook Salmon, by D.A. McCullough
J.M. Bartholow
2001, Transactions of the American Fisheries Society (130) 350-350
Review of: A Review and Synthesis of Effects of Alterations to the Water Temperature Regime on Freshwater Life Stages of Salmonids, with Special Reference to Chinook Salmon. By Dale A. McCullough. Columbia River Inter-Tribal Fish Commission. 22 February 1999. REPORT #: EPA 910-R-99-010....
Pb isotopes and toxic metals in floodplain and stream sediments from the Volturno river basin, Italy
B. DeVivo, R. Somma, R. A. Ayuso, G. Calderoni, A. Lima, S. Pagliuca, A. Sava
2001, Environmental Geology (41) 101-112
We present results of a stratigraphic and environmental geochemistry study of the eastern sector of the Volturno river basin (Italy) using stream sediment and floodplain drill core samples. The cores, dated back to 7,000 years B.P., have been used to evaluate background (baseline) values. Pb isotopic compositions and toxic metal...
Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams
M. T. Meyer, E.M. Thurman, D. A. Goolsby
2001, Journal of Environmental Quality (30) 1836-1843
Pesticide degradates account for a significant portion of the pesticide load in surface water. Because pesticides with similar structures may degrade to the same degradate, it is important to distinguish between different sources of parent compounds that have different regulatory and environmental implications. A discrimination diagram, which is a sample...
Dynamics of individual growth in a recovering population of lake trout (Salvelinus namaycush)
Mary C. Fabrizio, Robert M. Dorazio, Stephen T. Schram
2001, Canadian Journal of Fisheries and Aquatic Sciences (58) 262-272
In 1976, the Wisconsin Department of Natural Resources established a refuge for a nearly depleted population of lake trout (Salvelinus namaycush) at Gull Island Shoal, Lake Superior. The refuge was intended to reduce fishing mortality by protecting adult lake trout. We examined the growth dynamics of these lake...
Delineation of sympatric morphotypes of lake trout in Lake Superior
Seth A. Moore, Charles R. Bronte
2001, Transactions of the American Fisheries Society (130) 1233-1240
Three morphotypes of lake trout Salvelinus namaycush are recognized in Lake Superior: lean, siscowet, and humper. Absolute morphotype assignment can be difficult. We used a size-free, whole-body morphometric analysis (truss protocol) to determine whether differences in body shape existed among lake trout morphotypes. Our results showed discrimination where traditional morphometric characters and...
Post-fire, rainfall intensity-peak discharge relations for three mountainous watersheds in the Western USA
J. A. Moody, D.A. Martin
2001, Hydrological Processes (15) 2981-2993
Wildfire alters the hydrologic response of watersheds, including the peak discharges resulting from subsequent rainfall. Improving predictions of the magnitude of flooding that follows wildfire is needed because of the increase in human population at risk in the wildland-urban interface. Because this wildland-urban interface is typically in mountainous terrain, we...
