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: 41771
Impact of red fox predation on the sex ratio of prairie mallards
No abstract available.
Authors
Douglas H. Johnson, Alan B. Sargeant
Abundance, composition, and distribution of crustacean zooplankton in relation to hypolimnetic oxygen depletion in west-central Lake Erie
Samples of crustacean zooplankton were collected monthly in west-central Lake Erie in April and June to October 1968, and in July and August 1970, before and during periods of hypolimnetic dissolved oxygen (DO) depletion. The water column at offshore stations was thermally stratified from June through September 1968, and the hypolimnion contained no DO in mid-August of 1968 or 1970. Composition, a
Authors
Roy F. Heberger, James B. Reynolds
A bibliography of references to avian botulism
This bibliography, first compiled in 1970 in response to many requests for information on avian botulism, has been updated to include the literature published through 1975.In general, only articles dealing primarily with the avian disease are included, as opposed to those concerned with various aspects of the biology of Clostridium botulinum, either type C or type E. A few exceptions, such as Beng
Authors
Jack E. Allen, Sonoma S. Wilson
Some Bayesian statistical techniques useful in estimating frequency and density
No abstract available.
Authors
Douglas H. Johnson
Wading birds as biological indicators: 1975 colony survey
No abstract available.
Authors
Thomas W. Custer, Ronald G. Osborn
Analysis and machine mapping of the distribution of band recoveries.
No abstract available.
Authors
Lewis M. Cowardin
Population ecology of the mallard: IV. A review of duck hunting regulations, activity, and success, with special reference to the mallard
This, the fourth in a series of reports on the mallard, (Anas platyrhynchos), deals at length with the harvest of mallards by waterfowl hunters. Long-term summaries of duck hunting regulations (1948- 1974), Migratory Bird Hunting Stamp sales (1934-1974), Hunter Questionnaire (1952-1974), Duck Wing Collection (1960-1974), and Hunter Performance (1965-1972) Survey data for the United States are pres
Authors
Elwood M. Martin, Samuel M. Carney
The decline of brown pelicans on the Louisiana and Texas Gulf Coast
Before 1920, native populations of brown pelicans (Pelecanus occidentalis carolinensis) were estimated at 50,000 to 85,000 birds in Louisiana and 5,000 in Texas. By 1958, brown pelicans had vanished from two wintering areas in each state, and wintering and breeding birds disappeared from additional areas between 1959 and 1961. By 1963, the disappearance of the brown pelican from Louisiana was comp
Authors
K. A. King, Edward L. Flickinger, H. H. Hildebrand
Upland nesting of American bitterns, marsh hawks, and short-eared owls
No abstract available.
Authors
H. F. Duebbert, J. T. Lokemoen
Nationwide residues of mercury, lead, cadmium, arsenic, and selenium in starlings, 1973
Starlings (Sturnus vulgaris) collected in 1973 at 51 sites throughout the continental United States were analyzed for mercury, lead, cadmium, arsenic, and selenium. All samples contained detectable levels of these elements. In general, residues were low: mercury residues ranged from <0.01 to 0.20 ppm: lead, from <0.10 10 3.20 ppm: cadmium, from <0.05 to 0.20 ppm: arsenic, from <0.05 to 1.40 ppm: a
Authors
D. H. White, J. R. Bean, J. R. Longcore
Organochlorine pesticide residues associated with mortality: Addivity of chlordane and endrin
No abstract available.
Authors
J. Larry Ludke
Residues of DDT and DDE in livers of waterfowl, northeastern Louisiana--1970-71
A study was conducted to determine the levels of DDT and DDE in the livers of 10 species of waterfowl collected in Louisiana from 1970 to 1971. Livers of 48 of 50 specimens contained detectable levels of DDT and/or DDE. DDT residues ranged from 0.01 to 10.90 ppm; DDE levels ranged from 0.02 to 38.69 ppm.
Authors
Donald H. White