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
Organochlorine contaminants in eggs of common terns from the Canadian Great Lakes, 1981 Organochlorine contaminants in eggs of common terns from the Canadian Great Lakes, 1981
To determine if contaminant levels in Common Terns had changed over the last decade, we collected and analyzed eggs from four nesting colonies on the three lower Great Lakes during 1981. DDE and PCBs were detected in every egg from the four colonies. Dieldrin, mirex and trans-nonachlor were detected in more than 45% of the eggs. Seven other organochlorine contaminants (DDD, DDT...
Authors
C.S. Robbins
Management of wetlands and beaches: Colonial waterbirds Management of wetlands and beaches: Colonial waterbirds
No abstract available.
Authors
R.M. Erwin
Inventory and management of trespass recreation use at Upper Delaware and Scenic and Recreational River Inventory and management of trespass recreation use at Upper Delaware and Scenic and Recreational River
Recreational trespass on private lands within the Upper Delaware Scenic and Recreational River, located along the eastern border between Pennsylvania and New York, prompted this survey of recreational trespass sites. The National Park Service has been mandated to manage river recreational use within its boundaries but land ownership shall remain predominantly private. This survey was...
Authors
J. L. Marion
Waterfowl mortality factors Waterfowl mortality factors
The objectives of waterfowl management in North America involve population size and harvest. Any management action intended to influence population size must do so through one of four demographic variables: reproduction, mortality, immigration, and emigration. Mortality is especially important because hunting can be strongly influenced by management.
Authors
J.D. Nichols
Evaluating recreation impacts: A multi-faceted research design Evaluating recreation impacts: A multi-faceted research design
No abstract available.
Authors
J. L. Marion, D.N. Cole
Two new species of South American Centrorlenella (Anura: Centrolenidae) related to C. Mariae Two new species of South American Centrorlenella (Anura: Centrolenidae) related to C. Mariae
Two new Centrolenella are described, C. azulae from the Cordillera Azul of Peru, and C. puyoensis from the Amazonian slopes of the Ecuadorian Andes. Centrolenella azulae is distinguished by its moderately large size, the presence of vomerine teeth, a snout truncate in dorsal view and slightly protruding in profile, a color pattern in preservative of very diffuse lavender with small...
Authors
G. Flores, R.W. McDiarmid
Impacts of brown tree snake on the native birds of Guam Impacts of brown tree snake on the native birds of Guam
No abstract available.
Authors
T. H. Fritts, G.H. Rodda
Monitoring contaminant exposure: Relative concentrations of organochlorines in three tissues of American black ducks Monitoring contaminant exposure: Relative concentrations of organochlorines in three tissues of American black ducks
Comparison of organochlorine residues in wildlife must often be made to regulatory standards or to values of known biological significance; this is difficult when dissimilar tissues are analyzed and results are expressed on different bases. To relate levels in the different tissues used for regulatory and monitoring purposes and for biological assessments, we exposed American black ducks...
Authors
Susan D. Haseltine, Russell James Hall, Paul H. Geissler
Recruitment failure in American avocets and black-necked stilts nesting at Kesterson Reservoir, California, 1984-1985 Recruitment failure in American avocets and black-necked stilts nesting at Kesterson Reservoir, California, 1984-1985
There was a high incidence of embryo mortality and deformities in black-necked stilts nesting at Kesterson Reservoir during both years of this study and in American avocets during 1985. The concentrations of selenium in eggs at Kesterson Reservoir were sufficiently elevated to have caused the reproductive problems observed. Selenium appears to be the primary cause of the recruitment...
Authors
M.L. Williams, R. L. Hothem, H. M. Ohlendorf
Accumulation of lead and organochlorine residues in captive American kestrels fed pine voles from apple orchards Accumulation of lead and organochlorine residues in captive American kestrels fed pine voles from apple orchards
Pine voles (Microtus pinetorum) were collected from pesticide-treated orchards in New York and fed to 3 captive American kestrels (Falco sparverius) for 60 days to evaluate potential hazards from soil-borne persistent insecticides. Three control kestrels were fed uncontaminated laboratory mice (Mus musculus). The pine voles contained an average of 38 ppm lead, 48 ppm DDE and 1.2 ppm...
Authors
Rey C. Stendell, W. Nelson Beyer, Robert A. Stehn
Annual survival rates of breeding adult roseate terns Annual survival rates of breeding adult roseate terns
Analyses of the capture-recapture data on 910 individual Roseate Terns (Sterna dougallii) trapped from 1978-1987 as breeding adults on nests on Falkner Island, Connecticut, estimate the average annual minimum adult survival rate to be 0.74-0.75. There was weak evidence of year-to-year variation in annual survival rates during the study period. The Jolly-Seber models used to estimate...
Authors
Jeffrey A. Spendelow, James D. Nichols