Publications
These publications showcase the significant science conducted in our Science Centers.
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Toxicity to woodlice of zinc and lead oxides added to soil litter
Previous studies have shown that high concentrations of metals in soil are associated with reductions in decomposer populations. We have here determined the relation between the concentrations of lead and zinc added as oxides to soil litter and the survival and reproduction of a decomposer population under controlled conditions. Laboratory populations of woodlice (Porcellio scaber Latr) were fed s
Authors
W. N. Beyer, A. Anderson
Metal contamination in wildlife living near two zinc smelters
Wildlife in an oak forest on Blue Mountain was studied 10 km upwind (Bake Oven Knob site) and 2 km downwind (Palmerton site) of two zinc smelters in eastern Pennsylvania, USA. Previous studies at sites near these smelters had shown changes in populations of soil microflora, lichens, green plants and litter-inhabiting arthropods. The 02 soil litter horizon at Palmerton was heavily contaminated with
Authors
W. N. Beyer, O. H. Pattee, L. Sileo, D. J. Hoffman, B. M. Mulhern
Reproduction, mortality, and heavy metal concentrations in great blue herons from three colonies in Washington and Idaho
We collected eggs in nests, hatchlings and eggs with advanced embryos on the ground, and prefledgling young of Great Blue Herons (Ardea herodias) at three nesting colonies in Washington and Idaho. Intact fish were also collected on the ground at the Idaho colony. The Ft. Lewis colony near Puget Sound in Washington and the Lake Chatcolet colony in northern Idaho were located near areas extensivel
Authors
L. J. Blus, C. J. Henny, A. Anderson, R. E. Fitzner
The effects of heptachlor and lindane on birds, Columbia Basin, Oregon and Washington, 1976-1981
The effects of heptachlor seed treatments on birds in the vicinity of the Umatilla National Wildlife Refuge, Oregon and Washington, were investigated from 1978 to 1981. An egg was collected from each of 60 nests representing six species. Heptachlor epoxide (HE) residues were detected in 35 eggs and were particularly high (8?13 :g g-1) in a few eggs of the black-billed magpie, mallard, and ring-n
Authors
L. J. Blus, C. J. Henny, A. J. Krynitsky
On condition bias and band-recovery data from large-scale waterfowl banding programs
No abstract available.
Authors
K.P. Burnham, J. D. Nichols
DDE residues and artificial incubation of loggerhead sea turtle eggs
No abstract available.
Authors
D. R. Clark, A. J. Krynitsky
Organochlorine concentrations in prefledging common terns at three Rhode Island colonies
Concentrations of DDE, polychlorinated biphenyls (PCBs), and polychlorinated diphenyl ethers (PCDPEs) in carcasses of prefledging Common Terns (Sterna hirundo) at three Rhode Island colonies support the hypothesis that local contamination is responsible for among-colony differences observed in eggs in an earlier study. The highest concentrations of DDE and PCBs (mean = 0.24 and 2.8 ppm wet weight)
Authors
T. W. Custer, C. M. Bunck, C. J. Stafford
Effects on wildlife of ethyl and methyl parathion applied to California rice fields
Selected rice fields on the Sacramento National Wildlife Refuge Complex were aerially sprayed one time during May or June 1982 with either ethyl (0.11 kg Al/ha) or methyl (0.84 kg AI/ha) parathion for control of tadpole shrimp, Triops longicaudatus. No sick or dead vertebrate wildlife were found or adjacent to the treated rice fields after spraying. Specimens of the following birds and mammals wer
Authors
Thomas W. Custer, Elwood F. Hill, Harry M. Ohlendorf
Organochlorine residues in animals from three Louisiana watersheds in 1978 and 1979
No abstract available.
Authors
P.F. Dowd, G.U. Mayfield, D.P. Coulon, J.B. Graves, J.D. Newson
Differences in the feeding behavior of little egrets (Egretta garzetta) in two habitats in the Camargue, France
No abstract available.
Authors
R.M. Erwin, H. Hafner, P. Dugan
Habitat comparisons and productivity in nesting common terns on the mid-Atlantic coast
Nesting Common Terns (Sterna hirundo) were studied at a number of barrier beaches and small islands of tidal salt marsh in New Jersey and the Eastern Shore of Maryland-Virginina from 1980 through 1982. Data were collected on clutch sizes, nest spacing, and nesting success. The principal null hypothesis tested was that no difference in reproductive success exists between beach and marsh habitats. N
Authors
R.M. Erwin, D. C. Smith
Age of cavity trees and colony stands selected by red-cockaded woodpeckers
No abstract available.
Authors
R. Field, B.K. Williams