Effects of dietary selenium and vitamin E on red blood cell peroxidation, glutathione peroxidase activity, and macrophage superoxide anion production in channel catfish
D.J. Wise, J.R. Tomasso, D.M.I. Gatlin, S.C. Bai, V. S. Blazer
1993, Journal of Aquatic Animal Health (5) 177-182
Fingerling channel catfish Ictalurus punctatus were fed purified diets either unsupplemented and deficient in both selenium and vitamin E, deficient in either selenium or vitamin E, adequate in both selenium (0.2 mg/kg) and vitamin E (60 mg/kg), or excessive in both nutrients (four times the recommended levels). After...
Possible secondary apatite fission track age standard from altered volcanic ash beds in the middle Jurassic Carmel Formation, Southwestern Utah
B. J. Kowallis, E. H. Christiansen, B.H. Everett, K.D. Crowley, C. W. Naeser, D. S. Miller, A.L. Deino
1993, Nuclear Tracks and Radiation Measurements (21) 519-524
Secondary age standards are valuable in intra- and interlaboratory calibration. At present very few such standards are available for fission track dating that is older than Tertiary. Several altered volcanic ash beds occur in the Middle Jurassic Carmel Formation in southwestern Utah. The formation was deposited in a shallow marine/sabhka...
Mitochondrial DNA variation in chinook salmon and chum salmon detected by restriction enzyme analysis of polymerase chain reaction products
M. Cronin, R. Spearman, R. Wilmot, J. Patton, J. Bickman
1993, Canadian Journal of Fisheries and Aquatic Sciences (50) 708-715
We analyze intraspecific mitochondrial DNA variation in chinook salmon from drainages in the Yukon River, the Kenai River, and Oregon and California rivers; and chum salmon from the Yukon River and vancouver Island, and Washington rivers. For each species, three different portions of the mtDNA molecule were amplified seperately using...
Conservation status of freshwater mussels of the United States and Canada
J.D. Williams, M.L. Warren Jr., K.S. Cummings, J.L. Harris, R. J. Neves
1993, Fisheries (18) 6-22
The American Fisheries Society (AFS) herein provides a list of all native freshwater mussels (families Margaritiferidae and Unionidae) in the United States and Canada. This report also provides state and provincial distributions; a comprehensive review of the conservation status of all taxa; and references on biology, conservation, and distribution of...
Survival of lake trout stocked in U.S. Waters of Lake Ontario
Joseph H. Elrod, Clifford P. Schneider, David E. Ostergaard
1993, North American Journal of Fisheries Management (13) 775-781
Lake trout Salvelinus namaycush of the 1979–1990 year-classes (Lake Superior strain) were marked and stocked as fingerlings or yearlings in U.S. waters of Lake Ontario and recaptured during annual surveys with trawls and gill nets. Catches (as proportions of fish stocked) of age-2 fish by trawls and age-3 fish by gill nets...
Intrafen and interfen variation of Indiana fens: water chemistry
Paul M. Stewart, Katrina Kessler, Richard Dunbar
1993, Proceedings of the Indiana Academy of Science (102) 207-217
This study establishes a baseline of water chemistry information for selected Indiana fens over the course of one year. Fens are peatlands fed by groundwater seepage and are characterized by their dominant plant communities. Most of the fens discussed in this paper are located on property controlled and...
Brown coal maceral distributions in a modern domed tropical Indonesian peat and a comparison with maceral distributions in Middle Pennsylvanian–age Appalachian bituminous coal beds
William C. Grady, Cortland F. Eble, Sandra G. Neuzil
1993, Special Paper of the Geological Society of America (286) 63-82
Analyses of modern Indonesian peat samples reveal that the optical characteristics of peat constituents are consistent with the characteristics of macerals observed in brown coal and, as found by previous workers, brown-coal maceral terminology can be used in the analysis of modern peat. A core from the margin and...
The use of a vegetation index for assessment of the urban heat island effect
K. P. Gallo, A. L. McNab, Thomas R. Karl, Jesslyn F. Brown, J. J. Hood, J.D. Tarpley
1993, International Journal of Remote Sensing (14) 2223-2230
A vegetation index and radiative surface temperature were derived from NOAA-11 Advanced Very High Resolution Radiometer (AVHRR) data for the Seattle, WA region from 28 June through 4 July 1991. The vegetation index and surface temperature values were computed for locations of weather observation stations within the region and compared...
Family stability in greater white-fronted geese
Craig R. Ely
1993, The Auk (110) 425-235
I investigated the stability of parent-offspring bonds, and sibling-sibling bonds of neck-banded Greater White-fronted Geese (Anser albifrons frontalis) during winters (September-May) in California and southern Oregon from 1979 to 1989. Geese captured at feeding sites were more likely to be in social groups than those captured at roosting sites. Offspring...
Volcanic activity in Alaska: September 1991-September 1992
Game McGimsey
1993, Earthquakes & Volcanoes (USGS) (24) 60-73
More than 40 historically active volcanic centers, each consisting of one or more volcanoes, are located on the Alaska Peninsula and Aleutian Islands (see map on next page). On average, at least one of these volcanoes erupts each year....
Advection and diffusion in a variable-salinity confining layer
Leonard F. Konikow, Javier Rodriguez Arevalo
1993, Water Resources Research (29) 2747-2761
A numerical model that simulates groundwater flow and solute transport for cases in which fluid properties are variable was applied in one dimension (vertical) to the shallow, low-permeability, clayey, confining layer in Doñana National Park in southwestern Spain. The salinity in the 80-m-thick confining layer decreases from a brine near...
Nonlinear growth dynamics and the origin of fluctuating asymmetry
J.M. Emlen, D.C. Freeman, J.H. Graham
1993, Genetica (89) 77-96
The nonlinear, complex nature of biosynthesis magnifies the impacts of small, random perturbations on organism growth, leading to distortions in adaptive allometries and, in particular, to fluctuating asymmetry. These distortions can be partly checked by cell-cell and inter-body part feedback during growth and development, though the latter mechanism also...
Sea-cave temperature measurements and amino acid geochronology of British Late Pleistocene Sea stands
John T. Hollin, Franklin L. Smith, John T. Renouf, D. Graham Jenkins
1993, Journal of Quaternary Science (8) 359-364
‘Calibrating’ amino acid ratios with uranium-series dates requires an accurate knowledge of current mean annual temperatures (CMATs) over the region studied. To measure these, test-tube sized ‘diffusion sensors’ were emplaced for 1 year (in 1984, 1985 and 1986), both outside and inside Minchin Hole sea-cave in South Wales and Belle...
40Ar-39Ar ages of bentonite beds in the upper part of the Yazoo Formation (Upper Eocene), west-central Mississippi
J. D. Obradovich, D. T. Dockery III, C. C. Swisher III
1993, Mississippi Geology (14) 1-9
Bentonite beds recorded from both outcrops and cores in the upper Eocene Yazoo Formation offer opportunities to date the uppermost Eocene of this region and to provide information on the age of the Eocene/Oligocene boundary. This report gives radiometric age dates for three bentonites sampled from the upper Yazoo Formation....
Sensitivity of crustal deformation instruments to changes insecular rate
John O. Langbein, Eddie Quilty, Katherine Breckenridge
1993, Geophysical Research Letters (20) 85-88
A variety of instruments (including borehole strainmeters, water wells, creepmeters, laser ranging and differential magnetometers) are used to monitor crustal deformation in areas that are prone to geologic hazards such as earthquakes and volcanic eruptions. In monitoring the deformation, one typically examines the data for either a change in rate,...
Chapter 4: Cretaceous thrusting and Neogene block rotation in the northern Portneuf Range region, southeastern Idaho
Karl S. Kellogg
1992, Memoir of the Geological Society of America (179) 95-113
The Putnam thrust has long been recognized as an important Mesozoic structure in the northern Portneuf Range, southeastern Idaho. At most localities, the thrust places Ordovician rocks above Permian and Pennsylvanian rocks, although near its southeastern extent, it ramps laterally downsection to the southeast. At its southeasternmost exposures, Cambrian rocks...
Sources of nitrogen and phosphorous to northern San Francisco Bay
Stephen W. Hager, Laurence E. Schemel
1992, Estuaries and Coasts (15) 40-52
We studied nutrient sources to the Sacramento River and Suisun Bay (northern San Francisco Bay) and the influence which these sources have on the distributions of dissolved inorganic nitrogen (DIN) and dissolved reactive phosphorus (DRP) in the river and bay. We...
Rediscovery of the Central American Colubrid snake, Sibon argus, with comments on related species from the region
J.M. Savage, R.W. McDiarmid
1992, Copeia (1992) 421-432
Sibon argus Cope, 1875, long known only from the holotype, is redescribed based on material from Costa Rica and Panama. It differs from the only other member of the genus having an ocellate dorsal pattern (S. longifrenis) in its attenuate habitus, enlarged blunt head, protuberant eyes, and high segmental counts...
Four new species of frogs and one new species of snake from the Chapare region of Bolivia, with notes on other species
R.P. Reynolds, M.S. Foster
1992, Herpetological Monographs (6) 83-104
We report on a collection of 74 frogs, 11 lots of frog eggs or tadpoles, and two snakes collected from the Chapare Region in the yungas of the eastern Andean Cordillera de Cochabamba, Bolivia. Collecting localities range from approximately 300 m to >3200 m in elevation. The specimens pertain...
Assessing effects of pesticides on amphibians and reptiles: status and needs
R.J. Hall, P.F.P. Henry
1992, Herpetological Journal (2) 65-71
Growing concern about the decline of certain amphibian populations and for conservation of amphibians and reptiles has led to renewed awareness of problems from pesticides. Testing amphibians and reptiles as a requirement for chemical registration has been proposed but is difficult because of the phylogenetic diversity of these groups....
Robustness of survival estimates for radio-marked animals
C.M. Bunck, Chiu-Lan Chen
1992, Biometric Bulletin (9) 8 (Abstrac
Telemetry techniques are often used to study the survival of birds and mammals; particularly whcn mark-recapture approaches are unsuitable. Both parametric and nonparametric methods to estimate survival have becn developed or modified from other applications. An implicit assumption in these approaches is that the probability of re-locating an animal with...
Fifty-fifth Christmas Bird Count. 159. Ocean City, Md
C.J. Pennycuick, C.E. Heine, S.J. Kirkpatrick, M.R. Fuller
1992, Journal of Experimental Biology (165) 1-19
The distribution of dynamic pressure behind a Harris' hawk's wing was sampled using a wake rake consisting of 15 pitot tubes and one static tube. The hawk was holding on to a perch, but at an air speed and gliding angle at which it was capable of gliding. The perch...
Dolomitization of Quaternary reef limestones, Aitutaki, Cook Islands
James R. Hein, S.C. Gray, B. M. Richmond, L. D. White
1992, Sedimentology (39) 645-661
Six holes were drilled to depths of 30–69 m in the shallow lagoon of Aitutaki in the southern Cook Islands. One hole encountered pervasively dolomitized reef limestones at 36 m subbottom depth, which extended to the base of the drilled section at 69·3 m. This hole was drilled near the...
Theoretical and measured aeolian sand transport on a barrier island, Louisiana, USA
John R. Dingman, S.A. Hsu, Thomas E. Reiss
1992, Sedimentology (39) 1031-1043
Over the past 100 years, the Isles Dernieres, a low lying barrier island chain along the coast of central Louisiana, Usa, has undergone more than 1 km of northward beach face retreat with the loss of 70% of its surface area. The erosion results from a long term relative...
Controls on the accumulation of coal and on the development of anastomosed fluvial systems in the Cretaceous Dakota Formation of southern Utah
M.A. Kirschbaum, P.J. McCabe
1992, Sedimentology (39) 581-598
Alluvial strata of the Cretaceous Dakota Formation of southern Utah are part of a transgressive systems tract associated with a foreland basin developed adjacent to the Sevier orogenic belt. These strata contain valley fill deposits, anastomosed channel systems and widespread coals. The coals constitute a relatively minor part of the...
