David J. Germano, R. Bruce Bury
1998, Chelonian Conservation and Biology (3) 123-132
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateM.G. Mesa, T.P. Poe, A.G. Maule, C.B. Schreck
1998, Canadian Journal of Fisheries and Aquatic Sciences (55) 1599-1606
We experimentally infected juvenile chinook salmon (Oncorhynchus tshawytscha) with Renibacterium salmoninarum (Rs), the causative agent of bacterial kidney disease (BKD), to examine the vulnerability to predation of fish with differing levels of Rs infection and assess physiological change during progression of the disease. Immersion challenges conducted during 1992 and 1994...
Water Resources Division, U.S. Geological Survey
1998, Report
This Federal Recreation Lands map is a consolidated guide to public lands offering outdoor recreation opportunities. Some areas have more recreation potential than others, and types of recreation available may vary from place to place. Many areas include private land not open to the public. Care should be taken to...
Donald D. Young Jr., Thomas R. McCabe
1998, Journal of Wildlife Management (62) 255-261
Researchers have debated the effect of the Trans-Alaska Pipeline (TAP) and associated developments to caribou (Rangifer tarandus) of the central Arctic herd (CAH) since the 1970s. Several studies have demonstrated that cows and calves of the CAH avoided the TAP corridor because of disturbance associated with the pipeline, whereas others...
M. Martini, P. Clay
1998, Conference Paper, Oceanology International 98: The global ocean: Conference proceedings (Volume 1)
No abstract available....
K. A. Thorn, G. R. Aiken
1998, Organic Geochemistry (29) 909-931
As the result of a pipeline burst, a body of light aliphatic crude oil floats atop the groundwater in a shallow sand and gravel aquifer in a remote area outside Bemidji, Minnesota. Biodegradation has resulted in the formation of a plume of DOC downgradient from the oil body. Groundwater has...
Page C. Valentine
Eleanor M. Dorsey, Judith Pederson, editor(s)
1998, Book chapter, Effects of fishing gear on the sea floor of New England
In our studies of sea floor habitats, my colleagues and I use both biological and geological approaches. We call our studies “habitat geology,” a term coined by a biologist friend of mine. We view it as the study of sea floor materials and biological and geological processes that influence where...
Bruce K. Quirk, Ronald E. Beck
1998, Geotimes (43) 21-23
No abstract available....
Kim T. Scribner, Penelope A. Crane, William J. Spearman, Lisa W. Seeb
1998, Canadian Journal of Fisheries and Aquatic Sciences (55) 1748-1758
Although the number of genetic markers available for fisheries research has steadily increased in recent years, there is limited information on their relative utility. In this study, we compared the performance of different "classes" of genetic markers (mitochondrial DNA (mtDNA), nuclear DNA (nDNA), and allozymes) in terms of estimating levels and...
Richard B. Lanctot
1998, Natural History (107) 72-75
Spreading his wings to reveal their pearly white undersides, the male buff-breasted sandpiper tilted his head to the sky, puffed out his chest, and uttered a series of soft "tick-ticks.” He then proceeded to stamp his feet and vibrate his wings as if the ground were quaking beneath him. Soon,...
P.A. Mothes, M.L. Hall, R. J. Janda
1998, Bulletin of Volcanology (59) 233-244
The Chillos Valley Lahar (CVL), the largest Holocene debris flow in area and volume as yet recognized in the northern Andes, formed on Cotopaxi volcano's north and northeast slopes and descended river systems that took it 326 km north–northwest to the Pacific Ocean and 130+ km east into...
A. Haro, M. Odeh, J. Noreika, T. Castro-Santos
1998, Transactions of the American Fisheries Society (127) 118-127
Behavior and passage rate of smolts of Atlantic salmon Salmo salar and juvenile American shad Alosa sapidissima were compared between a standard (sharp‐crested) and a modified surface bypass weir that employs uniform flow velocity increase (1 m·s−1·m−1 of linear distance). Within the first 30 min after release, significantly more smolts passed the modified weir than...
Sharon Rafferty
1998, Report
This digital geospatial data set consists of locations of coal, oil, gas and water wells shown as data points in the report, "Structure, Outcrop, and Subcrop of the Bedrock Aquifers Along the Western Margin of the Denver Basin, Colorado" (Robson and others, 1998)....
H. Bijwaard, W. Spakman, E.R. Engdahl
1998, Journal of Geophysical Research B: Solid Earth (103) 30055-30078
Recent global travel time tomography studies by Zhou [1996] and van der Hilst et al. [1997] have been performed with cell parameterizations of the order of those frequently used in regional tomography studies (i.e., with cell sizes of 1°–2°). These new global models constitute a considerable improvement over previous results that were obtained...
David L. Peterson, T.J. Sullivan, J.M. Eilers, S. Brace, D. Horner
1998, Report
No abstract available....
Charles J. Henny, V.M. Galushin, A.V. Kuznetsov
B.-U. Meyburg, R.D. Chancellor, J.J. Ferrero, editor(s)
1998, Conference Paper, Holarctic birds of prey: Proceedings of an international conference
The Osprey population associated with Darwin Nature Reserve and the Rybinsk Reservoir increased from only a few pairs prior to the creation of the reservoir in the late 1940s , to about 45-50 pairs in 1994. Productivity rates were excellent in 1988 and 1989 (1.38 young/occupied nest), but extremely low...
R. Reynolds, Jayne Belnap, M. Reheis, Nilah Mazza
Alan J. Busacca, Sandra Lilligren, Kelly Newell, editor(s)
1998, Conference Paper, Proceedings: Dust aerosols, loess, soils, and global change, an interdisciplinary conference and field tour on dust in ancient environments and contemporary environmental management
No abstract available....
Beatrice Van Horne, Robert L. Schooley, Peter B. Sharpe
1998, Journal of Mammalogy (79) 521-537
We assayed diets of Townsend's ground squirrels (Spermophilus townsendii) in a semi-arid shrub steppe in Idaho by analyzing 1,432 fecal samples during 1991–1994. Dietary composition differed between adults and juveniles but not between males and females. Sand-berg's bluegrass (Poa secunda), a perennial bunchgrass, was the most common item in diets....
David J. Mattson
1998, Ursus (10) 129-138
Records of grizzly bear (Ursus arctos) deaths are currently used by managers to indicate trends in actual grizzly bear mortality and to judge the effectiveness of management. Two assumptions underlie these current uses: first, that recorded mortality is an unbiased indicator of actual mortality, and second, that changes in mortality...
Otto L. Lange, Jayne Belnap, H. Reichenberger
1998, Functional Ecology (12) 195-202
1. The gelatinous cyanobacterial Collema tenax is a dominant lichen of biotic soil crusts in the western United States. In laboratory experiments, we studied CO2 exchange of this species as dependent on water content (WC), light and temperature. Results are compared with performance of green-algal lichens of the same site...
D. L. Peterson
1998, Northwest Science (72) 234-235
No abstract available....
W. Thatcher, P.C. England
1998, Journal of Geophysical Research B: Solid Earth (103) 891-905
We have carried out two-dimensional (2-D) numerical experiments on the bulk flow of a layer of fluid that is driven in a strike-slip sense by constant velocities applied at its boundaries. The fluid has the (linearized) conventional rheology assumed to apply to lower crust/upper mantle rocks. The temperature dependence of...
R. D. Catchings, M. R. Goldman, W.H.K. Lee, M. J. Rymer, D.J. Ponti
1998, Bulletin of the Seismological Society of America (88) 1379-1391
Apparent southward-dipping, reverse-fault zones are imaged to depths of about 1.5 km beneath Potrero Canyon, Los Angeles County, California. Based on their orientation and projection to the surface, we suggest that the imaged fault zones are extensions of the Oak Ridge fault. Geologic mapping by others and correlations with seismicity...
L.G. Holcomb
1998, Bulletin of the Seismological Society of America (88) 744-757
The long-term behavior of a narrow band peak near 26 sec in the microseismic background of the Earth has been studied over many years at several sites. The amplitude of this peak has been determined to be a function of the Earth's weather...
D. L. Waller, S.W. Fisher
1998, Progressive Fish-Culturist (60) 307-310
We evaluated the safety and effectiveness of chemical treatments for killing veliger and juvenile stages of the zebra mussel Dreissena polymorpha attached to unionid mussels. Static toxicity tests were conducted on eight unionid mussel species with common aquaculture chemicals (benzalkonium chloride, formalin, hydrogen peroxide, calcium chloride, potassium chloride, and sodium chloride). The...