You asked for it! Crop spraying season in fish producing areas
M. Martin
1982, Aquaculture Magazine (8) 33-33
Anion-exchange separation of Pt and Pd using perchloric and hydrochloric acid solutions
R.K. Petrie, J. W. Morgan
1982, Journal of Radioanalytical Chemistry (74) 15-23
On Biorad Ag-1X8 anion-exchange resin (200-400 mesh), Pd and Pt may be separated from one another by elution with 0.2M HClO4, and 5M HClO4, respectively. If present, Au may be retained by making the elutriants 0.003M in HCl. Alternatively, reduction by H2SO3 enables elution of Pt2+ with 6M HCl before...
Geological interpretation of cone penetrometer tests in Norton Sound, Alaska
M. A. Hampton, H.J. Lee, R.M. Beard
1982, Geo-Marine Letters (2) 223-230
In situ cone-penetrometer tests at 11 stations in Norton Sound, Alaska, complement previous studies of geologic processes and provide geotechnical data for an analysis of sediment response to loading. Assessment of the penetrometer records shows that various geologic factors influence penetration resistance. On the Yukon prodelta, penetration resistance increases with...
Sonographs of submarine sediment failure caused by the 1980 earthquake off northern California
M.E. Field, R. K. Hall
1982, Geo-Marine Letters (2) 135-141
In 1980, a large earthquake caused extensive sediment failure on the shallow continental shelf off the Klamath River in northern California. Side-scan sonography was used to complement detailed geophysical profiling in identifying specific features and resolving modes of failure. The features include a nearly flat failure terrace mantled with sand...
Large sand waves in Navarinsky Canyon head, Bering Sea
Herman A. Karl, P.R. Carlson
1982, Geo-Marine Letters (2) 157-162
Sand waves are present in the heads of large submarine canyons in the northwestern Bering Sea. They vary in height between 2 to 15 m and have wavelengths of 600 m. They are not only expressed on the seafloor, but are also well defined in the subsurface and resemble enormous...
Chemical characterization of gas- and oil-bearing shales by instrumental neutron activation analysis
J.K. Frost, R.F. Koszykowski, R.C. Klemm
1982, Journal of Radioanalytical Chemistry (71) 199-214
The concentration of As, Ba, Ca, Co, Cr, Cs, Dy, Eu, Fe, Ga, Hf, K, La, Lu, Mn, Mo, Na, Ni, Rb, Sb, Sc, Se, Sm, Sr, Ta, Tb, Th, U, Yb, and Zn were determined by instrumental neutron activation analysis in block shale samples of the New Albany Group...
Puzzling mass movement features in the Navarinsky Canyon head, Bering Sea
P.R. Carlson, Herman A. Karl, B. D. Edwards
1982, Geo-Marine Letters (2) 123-127
Two types of morphologic features in the head of Navarinsky Canyon are attributed to mass movement of near-surface sediment. A series of pull-aparts is located downslope of large sand waves. These pull-aparts, possibly induced by liquefaction, affect the upper 5 to 10 m of sandy sediment (water depths 350 to...
Erosional channels on the shoreface of Nauset Beach, Cape Cod, Massachusetts
S. W. Needell, William P. Dillon, H.J. Knebel
1982, Geo-Marine Letters (2) 61-64
Many channels (1 to 3 m relief)_are located offshore of Nauset Beach, Cape Cod, Massachusetts, in water 4 to 18 m deep. The channels are oblique to the shoreline, are spaced approximately 260 m apart, and deepen seaward. The southern flank of each channel is rippled whereas the northern flank...
Channel systems and lobe construction in the Mississippi Fan
L. E. Garrison, Neil H. Kenyon, A.H. Bouma
1982, Geo-Marine Letters (2) 31-39
Morphological features on the Mississippi Fan in the eastern Gulf of Mexico were mapped using GLORIA II, a long-range side-scan sonar system. Prominent is a sinuous channel flanked by well-developed levees and occasional crevasse splays. The channel follows the axis and thickest part of the youngest fan lobe; seismic-reflection profiles...
Mud transportation on a steep shelf, Rio de La Plata shelf, Puerto Rico
K. A. Grove, O. H. Pilkey, J. V. A. Trumbull
1982, Geo-Marine Letters (2) 71-75
Hurricanes David (August 29-30, 1979) and Frederick (September 2-5, 1979) caused major flooding of the Rio de La Plata in northern Puerto Rico. A thin mud layer was deposited across the narrow insular shelf adjacent to the river mouth. Within 5 months, fair-weather shelf-winnowing processes moved the mud layer entirely...
Puerto Rican parrot recovery program shows progress
J. W. Wiley
1982, Endangered Species Technical Bulletin (7) 5-6
Nesting ecology of roseate spoonbills at Nueces Bay, Texas
Donald H. White, Christine A. Mitchell, E. Cromartie
1982, The Auk (99) 275-284
<span data-sheets-value="{"1":2,"2":"We conducted a study in 1978-1980 of the nesting ecology of Roseate Spoonbills (Ajaia ajaja) in a relatively polluted environment at Nueces Bay, Texas. For 154 marked nests, the average clutch size was 3.0 eggs; 73% of the eggs hatched, and 87% of the nests were successful (hatched...
Optimal stochastic control in natural resource management: Framework and examples
B. Kenneth Williams
1982, Ecological Modelling (16) 275-297
A framework is presented for the application of optimal control methods to natural resource problems. An expression of the optimal control problem appropriate for renewable natural resources is given and its application to Markovian systems is presented in some detail. Three general approaches are outlined for determining optimal...
Diazinon residues in insects from sprayed tobacco
K. L. Stromborg, W. N. Beyer, E. Kolbe
1982, Chemistry in Ecology (1) 93-97
Pooled samples of tobacco hornworms collected from a field sprayed with 0.84 kg/ha of diazinon were analyzed for residues at various intervals after application. No residues of the toxic metabolite diazoxon were detected (sensitivity 0.5 ppm) in any sample. Only one sample exceeded 1.0 ppm of the parent...
Distribution and status of Vicia menziesii Spreng. (Leguminosae): Hawai'i's first officially listed endangered plant species
F. R. Warshauer, J.D. Jacobi
1982, Biological Conservation (23) 111-126
Vicia menziesii Spreng., Hawai'i's first officially listed endangered plant species, formerly occurred across a large area in the upper montane-mesic forest habitat on the windward side of the island of Hawai'i. Until this species was ‘rediscovered’ in 1974, it had last been seen in 1915, and it was presumed to...
The eighty-second Audubon Christmas bird count. 445. Southern Dorchester County, Md
C.S. Robbins
1982, American Birds (36) 512
Parathion poisoning of wild geese in Texas
Donald H. White, C. A. Mitchell, E. J. Kolbe, J. M. Williams
1982, Journal of Wildlife Diseases (18) 389-391
No abstract available....
Arthropod predators of leptodactylid frog foam nests
J. Villa, R.W. McDiarmid, J.M. Gallardo
1982, Brenesia (19/20) 577-589
Medical and husbandry aspects of captive Andean condors: A model for the California condor
J. W. Carpenter
1982, American Association of Zoo Veterinarians, Annual Proceedings (1982) 13-19
The eighty-second Audubon Christmas bird count. North Carolina, South Carolina, Georgia, Florida
P.W. Sykes Jr.
1982, American Birds (36) 384-387
Biology and conservation of the Bahama parrot
N.F.R. Snyder, W.B. King, C. B. Kepler
1982, Living Bird (19) 91-114
Seasonal carcass composition and energy balance of female black ducks in Maine
K. J. Reinecke, T.L. Stone, Ray B. Owen
1982, Condor (84) 420-426
Female Black Ducks (Anas rubripes) collected in Maine during the summer, fall, and winter of 1974-1976 showed significant seasonal variation in body weight, nonfat dry weight, gizzard and pectoral muscle weight, and fat, moisture, and protein content. Variation of body weight within and among seasons was correlated more strongly...
Breeding habitat selection and home range of radio-marked black ducks (Anas rubripes) in Maine
J.K. Ringelman, J. R. Longcore, R.B. Owen Jr.
1982, Canadian Journal of Zoology (60) 241-248
Telemetry techniques were used to monitor the movements and habitat use of 13 female and 7 male black ducks (Anas rubripes) in an inland breeding region of south central Maine in 1977–1980. Black ducks preferred persistent emergent, broad-leaved deciduous forested, and broad-leaved deciduous scrub–shrub wetlands over unconsolidated organic bottom, needle-leaved...
The influence of diet composition upon growth and development of Sandhill Cranes
John A. Serafin
1982, Condor (84) 427-434
Experiments were conducted to evaluate the effect of protein, metabolizable energy, and sulfur amino acid content of five diets upon growth and development of captive Florida Sandhill Crane (Grus canadensis pratensis) and Greater Sandhill Crane (G. c. tabida) chicks raised under controlled conditions. A high protein (32%) diet resulted...
Reduced mortality among young endangered masked bobwhite quail fed oxytetracycline-supplemented diets
John A. Serafin
1982, Avian Diseases (26) 422-425
Two experiments were conducted to examine the effect of oxytetracycline-supplemented diets on mortality of young endangered masked bobwhite quail (Colinus virginianus ridgwayi). Inclusion of oxytetracycline at 200 g per ton in the feed for 6 weeks resulted in a marked, significant reduction in mortality of young masked bobwhite quail raised...