Publications
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Cretaceous paleoceanography of the western North Atlantic Ocean
In this paper we summarize available information on the Cretaceous lithostratigraphy and paleoceanography of the western North Atlantic. The data and some of our interpretations draw in large part on papers published in the Deep Sea Drilling Project (DSDP) volumes. We have attempted to cite relevant references when possible, but space limitations make it difficult to give proper credit to all sour
Authors
Michael A. Arthur, Walter E. Dean
Resource potential of the western North Atlantic Basin
We here consider the petroleum resources only of the off shelf portion of the western North Atlantic Ocean. Very little information is available for this region; off the eastern United States, only four petroleum exploration holes have been drilled in one restricted area seaward of the shelf, off the Baltimore Canyon trough. However, by interpreting seismic reflection profiles and Stratigraphie da
Authors
William P. Dillon, Frank T. Manheim, L.F. Jansa, Gudmundur Palmason, Brian E. Tucholke, Richard S. Landrum
Mortality of captive whooping cranes caused by eastern equine encephalitis virus
Of 39 captive whooping cranes (Grus americana), 7 died during a 7-week period (Sept 17 through Nov 4, 1984) at the Patuxent Wildlife Research Center, Laurel, Md. Before their deaths, 4 cranes did not develop clinical signs, whereas the other 3 cranes were lethargic and ataxic, with high aspartate transaminase, gamma-glutamyl transferase, and lactic acid dehydrogenase activities, and high uric acid
Authors
F. J. Dein, J. W. Carpenter, G.G. Clark, R.J. Montali, C.L. Crabbs, T.F. Tsai, D. E. Docherty
Population trends, reproductive success, and organochlorine chemical contaminants in waterbirds nesting in Galveston Bay, Texas
The effects of environmental contaminants on the reproductive success of olivaceous cormorants (Phalacrocorax olivaceus), laughing gulls (Larus atricilla), and black skimmers (Rhynchops niger) nesting in Galveston Bay, Texas were investigated from 1980 through 1982. Populations of cormorants and gulls have remained stable in recent years, but skimmer numbers may have declined. Cormorants produced
Authors
Kirke A. King, Alexander J. Krynitsky
Organochlorine residues in adult mallard and black duck wings, 1981-1982
Ten organochlorine compounds were identified in pools of black duck (Anas rubripes) and mallard (A. platyrhynchos) wings from the 1981–82 hunting season. Most organochlorine compounds occurred very infrequently. Among those compounds positively identified by mass spectrometry, DDE and, secondarily, PCB had the highest frequencies of occurrence. Other compounds, positively identified and occurring
Authors
R. M. Prouty, C. M. Bunck
Survival estimates for North American Atlantic brant, 1956-75
The entire banding and recovery record for Atlantic brant (Branta bernicla hrota) was analyzed to determine recovery and survival rates for 1956-75. Composite survival rates for all adults (sex of banded birds was not recorded) during the 19-year period ranged from 0.984 to 0.591 (x = 0.785). Survival rates for Atlantic brant are relatively high among all geese but at the low end of the range for
Authors
R.E. Kirby, M.J. Conroy, T.W. Barry, R.H. Kerbes
Parasitization of meadow voles, Microtus pennsylvanicus (ORD), by American dog ticks, Dermacentor variabilis (Say), and adult tick movement during high host density
The numbers of host-seeking adult American dog ticks, Dermacentor variabilis (Say), in a sweet gum field in Maryland reflected changes in the population density of a host species, the meadow vole, Microtus pennsylvanicus (Ord), which within 1.5 yr fell from an estimated 157 to 8 voles on a 0.8 ha grid. During high vole density, there was no significant difference (P > 0.05) in tick burdens between
Authors
J. F. Carroll, J. D. Nichols
Comment and Reply on “Ouachita trough: Part of a Cambrian failed rift system”: COMMENT
No abstract available.
Authors
Keith B. Ketner, R. L. Ethington, John E. Repetski, Reuben James
Ross, C. G. Stone
Ross, C. G. Stone
Wildlife in some areas of New Mexico and Texas accumulate elevated DDE residues, 1983
Over the last decade, data gathered by the U.S. Fish & Wildlife Service's National Contaminant Biomonitoring Program have identified an area of elevated DDE contamination in portions of New Mexico and Texas. Extensive wildlife sampling in 1983 confirmed that DDE, the major metabolite of the insecticide DDT, was present at high concentrations in wildlife at selected sites in the Rio Grande and Peco
Authors
Donald H. White, Alexander J. Krynitsky
Reproduction of bobwhites fed different dietary concentrations of an organophosphate insecticide, methamidophos
Pairs of first-year breeding bobwhites were fed constant or variable concentrations of methamidophos for 15 days, or a control diet in a pair-fed design in which they were matched by body weights to pairs in the constant group. Treatments for the constant group were 5.0, 7.8, 12.3, 19.2, and 30.0 ppm for 5 pairs at each concentration. The number of pairs per concentration and peak concentrations f
Authors
K. L. Stromborg
Bird predation on cutworms (Lepidoptera: Noctuidae) in wheat fields and chlorpyrifos effects on brain cholinesterase activity
Horned larks, Eremophila alpestris (L.), and McCown's longspurs, Calcarius mccownii (Lawrence), were collected at intervals from two winter wheat fields in Montana after aerial application of chlorpyrifos to control cutworms. Both bird species had a high (95–100%) incidence of Lepidoptera, mostly pale western cutworms, Agrotis orthogonia Morrison, in their stomachs at 3 days postspray. Incidence o
Authors
L. C. McEwen, Lawrence R. DeWeese, P. Schladweiler
Cholinesterase activity in black-crowned night-herons exposed to fenthion-treated water
Fenthion, (0,0-Dimethyl0-[3-methyl-4-(methylthio)phenyl] phosphorothioate), a widely used mosquito control agent, has caused wildlife mortality. To simulate a shallow wetland environment, an exposure chamber was used containing water treated with fenthion at 1 and 10 times the field application rate of 112 g active ingredient (AI)/ ha. This system permitted an evaluation of exposure routes and the
Authors
Gregory J. Smith, James W. Spann, Elwood F. Hill