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: 41920
Atlantic Flyway review: Region V: Laurel, Prince Georges County, MD
Robbins Nest is located on the fall line one-half mile below Rocky Gorge Reservoir. During the fall migration, about 8 nets are run on the upper part of the 3 acres (edge of the lawn, the garden, under the Virginia Pines, and the upper edge of the mature oak woods that drop 80 feet to the Patuxent River). Foul weather on weekends, combined with commitments away from home, severely restricted this
Authors
Chandler S. Robbins
Unusual foraging by a fork-tailed storm-petrel
While conducting an offshore bird census from the sea beach at Nelson Lagoon, Alaska Peninsula (56°00'N, 161°10'W) at 1700 on 17 September 1976 1 saw a Fork-tailed Storm Petrel (Oceanodroma f. furcata) feeding on the beached remains of an adult gray whale (Eschrichtius robustus) that had been trapped by ice and died the previous April. I watched it for about 15 min. The sky was overcast with a 25-
Authors
Robert E. Gill
Breeding avifauna of the south San Francisco Bay estuary
San Francisco Bay represents one of the largest estuarine areas on the Pacific Coast of North America. Its open waters, tidal flats, tidal marshes and solar evaporation ponds provide critical foraging, resting and breeding habitat for migratory and resident birds. The avifauna of San Francisco Bay has received considerable attention; however, little of it has been directed toward assessing the ove
Authors
Robert E. Gill
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