Sensitivity of condition indices to changing density in a white-tailed deer population
M.G. Sams, R.L. Lochmiller, C.W. Qualls Jr., David M. Leslie Jr.
1998, Journal of Wildlife Diseases (34) 110-125
The ways in which comprehensive condition profiles, incorporating morphometric, histologic, physiologic, and diet quality indices, responded to changes in density of a white-tailed deer (Odocoileus virginianus) population were examined. Changes in these condition indices were monitored in a northeastern Oklahoma deer herd as...
Evaluation of radio-tracking and strip transect methods for determining foraging ranges of Black-Legged Kittiwakes
William D. Ostrand, G.S. Drew, R.M. Suryan, L.L. McDonald
1998, The Condor (100) 709-718
We compared strip transect and radio-tracking methods of determining foraging range of Black-legged Kittiwakes (Rissa tridactyla). The mean distance birds were observed from their colony determined by radio-tracking was significantly greater than the mean value calculated from strip transects. We determined that this difference was due to two sources of...
A mini drivepoint sampler for measuring pore water solute concentrations in the hyporheic zone of sand-bottom streams
John H. Duff, Fred Murphy, Christopher C. Fuller, F. Triska, Judson W. Harvey, Alan P. Jackman
1998, Limnology and Oceanography (43) 1378-1383
A new method for collecting pore-water samples in sand and gravel streambeds is presented. We developed a mini drivepoint solution sampling (MINIPOINT) technique to collect pore-water samples at 2.5-cm vertical resolution. The sampler consisted of six small-diameter stainless steel drivepoints arranged in a 10-cm-diameter circular array. In a simple procedure,...
Effect of implanted satellite transmitters on the nesting behavior of Murres
P.M. Meyers, Scott A. Hatch, D.M. Mulcahy
1998, Condor (100) 172-174
We implanted 6 Common Murres (Uria aalge) and 10 Thick-billed Murres (Uria lomvia) with satellite transmitters and compared subsequent presence at the colony, nesting status, and provisioning to a control group that underwent a simple surgical procedure. In the 10 days following implantation, we resighted 10 of 11 control birds...
Volcanoes
Robert I. Tilling
1998, Report
Volcanoes destroy and volcanoes create. The catastrophic eruption of Mount St. Helens on May 18, 1980, made clear the awesome destructive power of a volcano. Yet, over a time span longer than human memory and record, volcanoes have played a key role in forming and modifying the planet upon which...
Indices of benthic community tolerance in contaminated Great Lakes sediments: Relations with sediment contaminant concentrations, sediment toxicity, and the sediment quality triad
M. L. Wildhaber, C. J. Schmitt
1998, Environmental Monitoring and Assessment (49) 23-49
We evaluated the toxic-units model developed by Wildhaber and Schmitt (1996) as a predictor of indices of mean tolerance to pollution (i.e., Lenat, 1993; Hilsenhoff, 1987) and other benthic community indices from Great Lakes sediments containing complex mixtures of environmental contaminants (e.g., polychlorinated biphenyls – PCBs, polycyclic aromatic hydrocarbons –...
Synthetic aperture radar interferometry coherence analysis over Katmai volcano group, Alaska
Z. Lu, J.T. Freymueller
1998, Journal of Geophysical Research B: Solid Earth (103) 29887-29894
The feasibility of measuring volcanic deformation or monitoring deformation of active volcanoes using space-borne synthetic aperture radar (SAR) interferometry depends on the ability to maintain phase coherence over appropriate time intervals. Using ERS 1 C band (λ=5.66 cm) SAR imagery, we studied the seasonal and temporal changes of the interferometric...
An observation on caching of prey by a long-tailed weasel (Mustela frenata)
E. Muths
1998, Southwestern Naturalist (43) 106
[No abstract available]...
Tectonic setting of synorogenic gold deposits of the Pacific Rim
R.J. Goldfarb, G.N. Phillips, W. J. Nokleberg
1998, Ore Geology Reviews (13) 185-218
More than 420 million oz of gold were concentrated in circum-Pacific synorogenic quartz loades mainly during two periods of continental growth, one along the Gondwanan margin in the Palaeozoic and the other in the northern Pacific basin between 170 and 50 Ma. These ores have many features in common and...
Chemistry, isotopic composition, and origin of a methane-hydrogen sulfide hydrate at the Cascadia subduction zone
M. Kastner, K.A. Kvenvolden, T.D. Lorenson
1998, Earth and Planetary Science Letters (156) 173-183
Although the presence of extensive gas hydrate on the Cascadia margin, offshore from the western U.S. and Canada, has been inferred from marine seismic records and pore water chemistry, solid gas hydrate has only been found at one location. At Ocean...
On sediment and habitat in the Upper Animas River watershed, Colorado
Robert T. Milhous
1998, Conference Paper, International Water Resources Engineering Conference - Proceedings
The Upper Animas River watershed in southwestern Colorado is located in the San Juan mountains and has been intensively mined. Active mining has essentially ceased but the impact of past mining on the aquatic ecosystem continues. This paper presents initial results from a study to determine the characteristics of the...
Breeding synchrony and extrapair fertilizations in two populations of red-winged blackbirds
D. F. Westneat, Elizabeth M. Gray
1998, Behavioral Ecology (9) 456-464
We tested the relationship between synchrony of breeding and the frequency of extrapair fertilizations (EPFs) in two populations of red-winged blackbirds known to differ in female extrapair behavior. We found no association between the number of simultaneously fertilizable females (temporal neighbors) and EPF rate in either population, although a significant...
Metal uptake by phytoplankton during a bloom in South San Francisco Bay: Implications for metal cycling in estuaries
S. N. Luoma, A. VanGeen, B.-G. Lee, J. E. Cloern
1998, Limnology and Oceanography (43) 1007-1016
The 1994 spring phytoplankton bloom in South San Francisco Bay caused substantial reductions in concentrations of dissolved Cd, Ni, and Zn, but not Cu. We estimate that the equivalent of ~60% of the total annual input of Cd, Ni, and Zn from local waste‐water treatment plants is...
Trace element abundances of high-MgO glasses from Kilauea, Mauna Loa and Haleakala volcanoes, Hawaii
T.P. Wagner, David A. Clague, E.H. Hauri, T.L. Grove
1998, Contributions to Mineralogy and Petrology (131) 13-21
We performed an ion-microprobe study of eleven high-MgO (6.7-14.8 wt%) tholeiite glasses from the Hawaiian volcanoes Kilauea, Mauna Loa and Haleakala. We determined the rare earth (RE), high field strength, and other selected trace element abundances of these glasses, and used the data to establish their relationship to typical Hawaiian...
Production of bromoform and dibromomethane by Giant Kelp: Factors affecting release and comparison to anthropogenic bromine sources
K.D. Goodwin, W.J. North, M.E. Lidstrom
1998, Limnology and Oceanography (42) 1725-1734
Macrocystis pyrifera (Giant Kelp), a dominant macroalgal species in southern California, produced 171 ng per g fresh wt (gfwt) per day of CHBr3 and 48 ng gfwt-1 d-1 of CH2Br2 during laboratory incubations of whole blades. Comparable rates were measured during in situ incubations of intact fronds. Release of CHBr3...
Adherence to balance tolerance limits at the Upper Mississippi Science Center, La Crosse, Wisconsin
C.T. Myers, D.M. Kennedy
1998, Quality assurance (San Diego, Calif.) (6) 45-52
Verification of balance accuracy entails applying a series of standard masses to a balance prior to use and recording the measured values. The recorded values for each standard should have lower and upper weight limits or tolerances that are accepted as verification of balance accuracy under normal operating conditions. Balance...
Satellite telemetry: A new tool for wildlife research and management
Steven G. Fancy, Larry F. Pank, David C. Douglas, Catherine H. Curby, Gerald W. Garner, Steven C. Amstrup, Wayne L. Regelin
1998, Resource Publication 172
The U.S. Fish and Wildlife Service and the Alaska Department of Fish and Game have cooperated since 1984 to develop and evaluate satellite telemetry as a means of overcoming the high costs and logistical problems of conventional VHF (very high frequency) radiotelemetry systems. Detailed locational and behavioral data on caribou...
Sulfur contents and sulfur-isotope compositions of thiotrophic symbioses in bivalve molluscs and vestimentiferan worms
R.D. Vetter, B. Fry
1998, Marine Biology (132) 453-460
Total sulfur (S(TOT)), elemental sulfur (S??) and sulfur-isotope compositions (??34S) of marine animals were analyzed to determine whether these chemical characteristics could help distinguish animals with a sulfur-based, thiotrophic nutrition from animals whose nutrition is based on methanotrophy or on more normal consumption of phytoplankton-derived organic matter. The presence of...
Sampling-variance effects on detecting density dependence from temporal trends in natural populations
Tanya M Shenk, Gary C. White, Kenneth P. Burnham
1998, Ecological Monographs (68) 445-463
Monte Carlo simulations were conducted to evaluate robustness of four tests to detect density dependence, from series of population abundances, to the addition of sampling variance. Population abundances were generated from random walk, stochastic exponential growth, and density-dependent population models. Population abundance estimates were generated with sampling variances distributed as...
Anthropogenic effects on winter behavior of ferruginous hawks
D.L. Plumpton, D. E. Andersen
1998, Journal of Wildlife Management (62) 340-346
Little information is known about the ecology of ferruginous hawks (Buteo regalis) in winter versus the breeding season and less about how the species adapts to fragmented grassland habitats. Accordingly, we studied the behavior of 38 radiotagged ferruginous hawks during 3 winters...
Mapping the global land surface using 1 km AVHRR data
D. T. Lauer, J.C. Eidenshink
1998, Space Technology (18) 71-76
The scientific requirements for mapping the global land surface using 1 km advanced very high resolution radiometer (AVHRR) data have been set forth by the U.S. Global Change Research Program; the International Geosphere Biosphere Programme (IGBP); The United Nations; the National Oceanic and Atmospheric Administration (NOAA); the Committee on Earth...
Sediment transport capacity as an objective of reservoir operations
Robert T. Milhous
Loucks E, editor(s)
1998, Conference Paper, Proceedings of the Annual Water Resources Planning and Management Conference
A sediment transport capacity index was developed as a part of a program to develop methods of flushing flow analysis. The index can be used to develop reservoir operation strategies that consider the movement of sediment as one of the reservoir management goals. The sedimentation transport capacity index determines the...
Growth and physiological responses to surgical and gastric radio transmitter implantation techniques in subyearling chinook salmon (Oncorhynchus tshawytscha)
Theresa L. Martinelli, H.C. Hansel, R.S. Shively
1998, Hydrobiologia (371-372) 79-87
We examined the effects of surgical and gastric transmitter implantation techniques on the growth, general physiology and behavior of 230 subyearling chinook salmon (Oncorhynchus tshawytscha, Walbaum) (100 mm-154 mm fork length). The transmitter weighed 1.3 g in air (0.9 g in water) and comprised, on average, 6% of the body...
The Chesapeake Bay bolide: Modern consequences of an ancient cataclysm
C. Wylie Poag
1998, Report
During the late Eocene, the formerly quiescent geological regime of the Virginia Coastal Plain was dramatically transformed when a bolide struck in the vicinity of the Delmarva Peninsula, and produced the following principal consequences:The bolide carved a roughly circular crater twice the size of the state of Rhode Island (~6400...
Correlating N2 and CH4 adsorption on microporous carbon using a new analytical model
Jielun Sun, S. Chen, M.J. Rood, M. Rostam-Abadi
1998, Energy and Fuels (12) 1071-1078
A new pore size distribution (PSD) model is developed to readily describe PSDs of microporous materials with an analytical expression. Results from this model can be used to calculate the corresponding adsorption isotherm to compare the calculated isotherm to the experimental isotherm. This aspect of the model provides another check...
