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Page 5860, results 146476 - 146500

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Prolonged retention of methyl mercury by mallard drakes
L.F. Stickel, W. H. Stickel, M. Anne Ross McLane, M. Bruns
1977, Bulletin of Environmental Contamination and Toxicology (18) 393-400
Mallard drakes accumulated mercury rapidly from dietary dosage of methylmercury dicyandiamide and eliminated it slowly, retaining approximately one half at the end of 84 days; no measurable loss occurred between the end of the 7th and 56th days, but loss resumed concurrently with new feather growth, and continued through the...
Effects of tide cycles on habitat selection and habitat partitioning by migrating shorebirds
J. Burger, M.A. Howe, D.C. Hahn, J. Chase
1977, The Auk (94) 743-758
We studied assemblages of feeding shorebirds in three intertidal habitats on the coast of New Jersey during August to document how species segregate spatially both among and within habitats and to determine the effects of tidal cycles on these patterns. The habitats were a sandy beach facing the ocean proper...
Residues of environmental pollutants and shell thinning in merganser eggs
Donald H. White, E. Cromartie
1977, The Wilson Bulletin (89) 532-542
Clutches of merganser eggs were collected in 1973 and 1975 to determine whether levels of organochlorines and mercury might be responsible for possible population declines and to compare eggshell measurements with those of early museum collections. One egg per clutch was selected randomly for chemical analysis. Overall, residues of DDE,...
Brain cholinesterase activities of birds from forests sprayed with trichlorfon (Dylox) and carbaryl (Sevin-4-oil)
J.G. Zinkl, Charles J. Henny, L.R. DeWeese
1977, Bulletin of Environmental Contamination and Toxicology (17) 379-386
Brain cholinesterase activities were determined in birds from forests sprayed with Dylox2 at 1.13 kg/hectare (1 1b/acre — active ingredient [a.i.]) or Sevin-4-oil2 at 1.13 kg/hectare (1 1b/acre — a.i.) for up to 5 days postspray. Of ten bird species evaluated from the Dylox spray area, four species...
A comparison of 2 techniques for estimating deer density
G.L. Storm, D.F. Cottam, R.H. Yahner, J.D. Nichols
1977, American Birds (31) 197-203
We applied mark-resight and area-conversion methods to estimate deer abundance at a 2,862-ha area in and surrounding the Gettysburg National Military Park and Eisenhower National Historic Site during 1987-1991. One observer in each of 11 compartments counted marked and unmarked deer during 65-75 minutes at dusk during 3 counts in...
Serum proteins of Canada goose (Branta canadensis) subspecies
R.P. Morgan II, S. T. Sulkin, Charles J. Henny
1977, Condor (79) 275-278
Serum proteins from nine subspecies of Canada Geese (Brunta canadensis) were analyzed through the use of column and slab acrylamide electrophoresis. Variation was minimal within a subspecies, although all the subspecies were closely related. B. c. leucopareia appeared to be the most distinct subspecies, while maxima and moffitti were...
Residues of organochlorine pesticides and polychlorinated biphenyls and autopsy data for bald eagles, 1973-74
R. M. Prouty, W. L. Reichel, L. N. Locke, A. A. Belisle, E. Cromartie, T. E. Kaiser, T. G. Lamont, B.M. Mulhern, D. M. Swineford
1977, Pesticides Monitoring Journal (11) 134-137
Thirty-nine bald eagles found sick or dead in 13 States during 1969 and 1970 were analyzed for pesticide residues. Residues of DDE, dieldrin, polychlorinated biphenyls (PCB's), and mercury were detected in all bald eagle carcasses; DDD residues were detected in 38; DDT, heptachlor epoxide, and dichlorobenzophenone (DCBP) were detected less...