Publications
This is a list of publications written by Patuxent employees since Patuxent opened in 1939. To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.
Filter Total Items: 8128
Conservation reserve program: benefit for grassland birds in the northern plains Conservation reserve program: benefit for grassland birds in the northern plains
During the past few decades numbers of some species of upland-nesting birds in North America have declined. Duck species such as mallard (Anas platyrhynchos), northern pintail (A. acuta) and blue-winged teal (A. discors) have declined since the early 1970s and have remained low since 1985 (Caithamer et al. 1993). Some grassland-dependent nonwaterfowl species also have declined since 1966...
Authors
R. E. Reynolds, T.L. Shaffer, J.R. Sauer, B.G. Peterjohn
Wildlife radiotelemetry Wildlife radiotelemetry
No abstract available.
Authors
M.D. Samuel, M.R. Fuller
Herbivory on shoalgrass by wintering redheads in Texas Herbivory on shoalgrass by wintering redheads in Texas
An estimated 80% of redheads (Aythya americana) winter on the Laguna Madre of south Texas and Mexico and feed almost exclusively on shoalgrass (Halodule wrightii) rhizomes. Shoalgrass abundance has decreased by 60% over the past 30 years, and because the effects of shoalgrass loss on wintering redheads are unknown, we initiated a study to define habitat selection criteria and document...
Authors
Christine A. Mitchell, Thomas W. Custer, Phillip J. Zwank
Flock sizes and sex ratios of canvasbacks in Chesapeake Bay and North Carolina Flock sizes and sex ratios of canvasbacks in Chesapeake Bay and North Carolina
Knowledge of the distribution, size, and sex ratios of flocks of wintering canvasbacks (Aythya valisineria) is fundamental to understanding the species' winter ecology and providing guidelines for management. Consequently, in winter 1986-87, we conducted 4 monthly aerial photographic surveys to investigate temporal changes in distribution, size, and sex ratios of canvasback flocks in...
Authors
G. Michael Haramis, Eric L. Derleth, William A. Link
Main and interactive effects of arsenic and selenium on mallard reproduction and duckling growth and survival Main and interactive effects of arsenic and selenium on mallard reproduction and duckling growth and survival
Arsenic (As) and selenium (Se) occur together in high concentrations in the environment and can accumulate in aquatic plants and invertebrates consumed by waterfowl. Ninety-nine pairs of breeding mallards (Anas platyrhynchos) were fed diets supplemented with As (sodium arsenate) at 0, 25, 100, or 400 μg/g, in combination with Se (seleno-DL-methionine) at 0 or 10 μg/g, in a replicated...
Authors
T.R. Stanley, J. W. Spann, G. J. Smith, R. Rosscoe
Orthopedics in cranes: pediatrics and adults Orthopedics in cranes: pediatrics and adults
No abstract available.
Authors
Glenn H. Olsen
A social science research plan for the Mid-Atlantic Region A social science research plan for the Mid-Atlantic Region
No abstract available.
Authors
J. L. Marion
Amphibian diversity and natural history: An overview Amphibian diversity and natural history: An overview
No abstract available.
Authors
R.W. McDiarmid
Northern mockingbird Mimus polyglottos Northern mockingbird Mimus polyglottos
No abstract available.
Authors
C.S. Robbins
Brown thrasher Toxostoma rufum Brown thrasher Toxostoma rufum
No abstract available.
Authors
C.S. Robbins
Gray catbird Dumetella carolinensis Gray catbird Dumetella carolinensis
No abstract available.
Authors
C.S. Robbins
An assessment of trail conditions in Great Smoky Mountains National Park: National Park Service-Southeast Region, final research report An assessment of trail conditions in Great Smoky Mountains National Park: National Park Service-Southeast Region, final research report
No abstract available.
Authors
J. L. Marion