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Page 3923, results 98051 - 98075

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Age-at-maturity estimates for Atlantic coast female striped bass
David L. Berlinsky, Mary C. Fabrizio, John F. O'Brien, Jennifer L. Specker
1995, Transactions of the American Fisheries Society (124) 207-215
This study was undertaken to estimate the percentage of mature female striped bass Morone saxatilis present in each age-class during annual coastal feeding migration. Migratory striped bass (N = 302) were sampled in coastal Rhode Island waters during spring (May-June) and fall (September-November) from 1985 to 1987. Stocks...
Transport behavior of groundwater protozoa and protozoan-sized microspheres in sandy aquifer sediments
R.W. Harvey, N.E. Kinner, A. Bunn, Duncan MacDonald, D. Metge
1995, Applied and Environmental Microbiology (61) 209-217
Transport behaviors of unidentified flagellated protozoa (flagellates) and flagellate-sized carboxylated microspheres in sandy, organically contaminated aquifer sediments were investigated in a small-scale (1 to 4-m travel distance) natural-gradient tracer test on Cape Cod and in flow-through columns packed with sieved (0.5-to 1.0-mm grain size) aquifer sediments. The minute (average...
Methylmercury oxidative degradation potentials in contaminated and pristine sediments of the Carson River, Nevada
R.S. Oremland, L.G. Miller, P. Dowdle, T. Connell, T. Barkay
1995, Applied and Environmental Microbiology (61) 2745-2753
Sediments from mercury-contaminated and uncontaminated reaches of the Carson River, Nevada, were assayed for sulfate reduction, methanogenesis, denitrification, and monomethylmercury (MeHg) degradation. Demethylation of [14C]MeHg was detected at all sites as indicated by the formation of 14CO2 and 14CH4. Oxidative demethylation was indicated by the formation of 14CO2 and was...
Vine maple clone growth and reproduction in managed and unmanaged coastal Oregon Douglas-fir forests
Mary E. O’Dea, John C. Zasada, John C. Tappeiner II
1995, Ecological Applications (5) 63-73
Vine maple (Acer circinatum Pursh.) clone development, expansion, and regeneration by seedling establishment were studied in 5-240 yr old managed and unmanaged Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in coastal Oregon. Stem length, number of stems, and crown area were all significantly (P ≤ 0.01) related to stand age, and...
Are red-tailed hawks and great horned owls diurnal-nocturnal dietary counterparts?
C.D. Marti, Michael N. Kochert
1995, The Wilson Bulletin (107) 615-628
Red-tailed Hawks (Buteo jamaicensis) and Great Homed Owls (Bubo virginianus)are common in North America where they occupy a wide range of habitats, often sympatrically. The two species are similar in size and have been portrayed as ecological counterparts, eating the same prey by day and night. We tested the trophic...
Inclusions in Mount St. Helens dacite erupted from 1980 through 1983
C. Heliker
1995, Journal of Volcanology and Geothermal Research (66) 115-135
Inclusions of plutonic, metavolcanic and volcanic rocks are abundant in dacite pumice and lava from the 1980–1986 eruption sequence at Mount St. Helens. Point counts of inclusions exposed in talus blocks from the dome from 1980 through 1983 show that inclusions form approximately 3.5 vol% of the lava. Eighty-five...
A comparison of two nitrification inhibitors used to measure nitrification rates in estuarine sediments
J.M. Caffrey, L.G. Miller
1995, FEMS Microbiology Ecology (17) 213-219
Nitrification rates were measured using intact sediment cores from South San Francisco Bay and two different nitrification inhibitors: acetylene and methyl fluoride. Sediment oxygen consumption and ammonium and nitrate fluxes were also measured in these cores. Four experiments were conducted in the spring, and one in the fall of 1993....
Free-surface stability criterion as affected by velocity distribution
Chen Cheng-Lung
1995, Journal of Hydraulic Engineering (121) 736-743
This paper examines how the velocity distribution of flow in open channels affects the kinematic and dynamic wave velocities, from which the various forms of the Vedernikov number V can be formulated. When V >1, disturbances created in open-channel flow will amplify in the form of roll waves; when V...
Mobilization of major and trace constituents of highway runoff in groundwater potentially caused by deicing chemical migration
Gregory E. Granato, Peter E. Church, Victoria J. Stone
1995, Transportation Research Record 92-104
The quality of water in unsaturated zones and groundwater is affected by the major ions in deicing chemicals applied to roads and highways. The assessment of the environmental effects of highway runoff requires investigations to determine whether other major and trace constituents are mobilized during deicing chemical migration through the...
Structural controls of Holocene reactivation of the Meers fault, southwestern Oklahoma, from magnetic studies
M. Jones-Cecil
1995, Geological Society of America Bulletin (107) 98-112
Holocene reactivation of the aseismic Meers fault in southwestern Oklahoma illustrates the limitation of using the historical seismic record for identifying hazardous faults in the central United States. The 26- to 37-km-long fault scarp is one of the few known scamps recording Holocene movement in the central and eastern United...
Nesting by Golden Eagles on the North Slope of the Brooks Range in Northeastern Alaska
Donald D. Young Jr., Carol L. McIntyre, Peter J. Bente, Thomas R. McCabe, Robert E. Ambrose
1995, Journal of Field Ornithology (66) 373-379
Twenty-two Golden Eagle (Aquila chrysaetos) nesting territories and 31 occupied eagle nests were documented on the north slope of the Brooks Range in northeastern Alaska, 1988-1990, in an area previously thought to be marginal breeding habitat for eagles. The mean number of young/successful nest was 1.25 in 1988, 1.27 in...
Use of egg traps to investigate lake trout spawning in the Great Lakes
Donald R. Schreiner, Charles R. Bronte, N. Robert Payne, John D. Fitzsimons, John M. Casselman
1995, Journal of Great Lakes Research (21) 433-444
Disk-shaped traps were used to examine egg deposition by lake trout (Salvelinus namaycush) at 29 sites in the Great Lakes. The main objectives were to; first, evaluate the disk trap as a device for sampling lake trout eggs in the Great Lakes, and second, summarize what has been learned about...
The role of wetlands as nearshore habitat in Lake Huron
Douglas A. Wilcox
M. Munawar, T. Edsall, J. Leach, editor(s)
1995, Book chapter, The Lake Huron ecosystem: ecology, fisheries and management
Wetlands are generally considered to be among the most productive habitats on earth. As the landscape connection between upland and aquatic ecosystems, they posess many of the attributes of both systems and perform functions that extend beyond the wetland boundary into both systems. In Lake Huron, wetlands comprise...