Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41778
Delta-aminolevulinic acid dehydratase enzyme activity in blood, brain, and liver of lead-dosed ducks
Mallard ducks were dosed with a single shotgun pellet (ca. 200 mg lead). After 1 month there was about 1 ppm lead in blood, 2.5 in liver, and 0.5 in brain. Lead-induced inhibition of delta-aminolevulinic acid dehydratase enzyme in blood and cerebellum was much greater than in cerebral hemisphere or liver and was strongly correlated with the lead concentration in these tissues. The cerebellar port
Authors
M. P. Dieter, M. T. Finley
White-crowned pigeon: Status rangewide and in the Dominican Republic
No abstract available.
Authors
W.J. Arendt, T.A. Vargas Mora, J. W. Wiley
Hematological values for the Siberian ferret (Mustela eversmanni)
No abstract available.
Authors
J. W. Carpenter, E. F. Hill
Pharmacokinetics of gentamicin in blood plasma of quail, pheasants, and cranes
Rate of appearance, peak concentration, and the biological half-life of gentamicin in the plasma of quail (Coturnix coturnix), pheasants (Phasianus colchicus), and cranes (Grus canadensis tabida) were studied. Gentamicin was given IM in doses of 5, 10, and 20 mg/kg of body weight. Peak plasma concentrations occurred earliest in the quail, latest in the cranes. The peak concentrations varied direct
Authors
R.S. Custer, M. Bush, J. W. Carpenter
Changes in forest bird species composition caused by transmission-line corridor cuts
No abstract available.
Authors
S.H. Anderson
Radio-equipped woodcock traced on fall migration
No abstract available.
Authors
R.A. Coon, J.S. Lindzey
External determination of age of common snipe
No abstract available.
Authors
T.J. Dwyer, J.V. Dobell
Multiple-factor influences upon feeding flight rates at wading bird colonies (Alias: Are flight-line counts useful?)
The temporal patterns of feeding, resting, and reproductive behavior in colonial wading birds have been studied by a number of investigators (Recher and Recher 1972, King 1974, Capen 1978, Custer and Osborn 1978, Kushlan 1978) both on a short-term (daily) and long-term (annual) basis. In coastal marine environments, activities at colonies are influenced by tides (Recher and Recher 1972, Krebs 197
Authors
R. Michael Erwin, John C. Ogden
Recovery of breeding success in a population of brown pelicans
Breeding populations of the brown pelican (Pelecanus occidentalis) declined during the 1960's on both east and west coasts of the United States. In 1969, colonies in South Carolina fledged an average of 0.78 young per nest (Blus et al. 1974b), and those in California only 0.004 (Anderson et al. 1975). The minimum production for population stability has been estimated to be 1.0 to 1.2 fledglings p
Authors
Vivian M. Mendenhall, Richard M. Prouty
Effects of mild cold stress on the survival of seawater-adapted mallard ducks (Anas platyrhynchos) maintained on food contaminated with petroleum
(1) Seawater-adapted Mallard ducks maintained in the laboratory will freely consume food that has been contaminated with either any one of a variety of crude oils or a petroleum derivative such as No. 2 fuel oil. (2) During a 100-day experimental period total masses of petroleum equivalent to 50% of the mean body weight were consumed by some birds and many showed no apparent symptoms of distress.
Authors
W.N. Holmes, J. Gorsline, J. Cronshaw