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
The ecology of cormorants: some research needs and recommendations The ecology of cormorants: some research needs and recommendations
Concerns about Double-crested Cormorants (Phalacrocorax auritus) have arisen because of their rapid population increase across North America and their economic impact on several aquaculture and commercial fish industries. In spite of the concern for cormorants, little published research is available that addresses either basic population biology questions or management issues. Based on a
Authors
R.M. Erwin
Wildlife toxicity testing Wildlife toxicity testing
Reports of anthropogenic environmental contaminants affecting free-ranging wildlife first began to accumulate during the Industrial Revolution of the 1850s. early reports included cases of arsenic and lead shot ingestion, and industrial smokestack emission toxicity. One early report described the death of fallow deer (Dama dama) due to arsenic emissions from a silver foundry in Germany...
Authors
David J. Hoffman
Habitat use at night by wintering American woodcock in coastal Georgia and Virginia Habitat use at night by wintering American woodcock in coastal Georgia and Virginia
Nocturnal habitats used by American woodcock (Scolopux minor) were studied using radio telemetry at two coastal wintering sites in Georgia (1982-84) and Virginia (1991-92). In Georgia, use of forested habitats at night was extensive while use of fields at night varied between years but generally was low. We found no difference in the probability of moving to a field at night among the...
Authors
David G. Krementz, John T. Seginak, Grey W. Pendleton
Accumulation and loss of arsenic and boron, alone and in combination, in mallard ducks Accumulation and loss of arsenic and boron, alone and in combination, in mallard ducks
Arsenic and boron are common in the environment, and wildlife can be exposed to toxic concentrations through both natural and human-influenced processes. We exposed adult male mallard ducks to dietary concentrations of 300 ppm arsenic as sodium arsenate, 1,600 ppm boron as boric acid, or both and estimated the tissue accumulation and loss rates when the ducks were returned to...
Authors
G.W. Pendleton, M.R. Whitworth, Glenn H. Olsen
Spruce grouse on Mount Desert Island: fragmented habitat complicates species management Spruce grouse on Mount Desert Island: fragmented habitat complicates species management
No abstract available.
Authors
A.F. O'Connell, F. A. Servello, S.D. Whitcomb
Hydrologic modeling as a predictive basis for ecological restoration of salt marshes Hydrologic modeling as a predictive basis for ecological restoration of salt marshes
Roads, bridges, causeways, impoundments, and dikes in the coastal zone often restrict tidal flow to salt marsh ecosystems. A dike with tide control structures, located at the mouth of the Herring River salt marsh estuarine system (Wellfleet, Massachusetts) since 1908, has effectively restricted tidal exchange, causing changes in marsh vegetation composition, degraded water quality, and...
Authors
C. T. Roman, R.W. Garvine, J. W. Portnoy
Partnerships: Innovative strategies for wildlife conservation Partnerships: Innovative strategies for wildlife conservation
No abstract available.
Authors
D.L. Trauger, W.C. Tilt, C.B. Hatcher
Estimation and confidence intervals for empirical mixing distributions Estimation and confidence intervals for empirical mixing distributions
Questions regarding collections of parameter estimates can frequently be expressed in terms of an empirical mixing distribution (EMD). This report discusses empirical Bayes estimation of an EMD, with emphasis on the construction of interval estimates. Estimation of the EMD is accomplished by substitution of estimates of prior parameters in the posterior mean of the EMD. This procedure is
Authors
W.A. Link, J.R. Sauer
Toxicity and bioaccumulation of sediment-associated contaminants using freshwater invertebrates: A review of methods and applications Toxicity and bioaccumulation of sediment-associated contaminants using freshwater invertebrates: A review of methods and applications
This paper reviews recent developments in methods for evaluating the toxicity and bioaccumulation of contaminants associated with freshwater sediments and summarizes example case studies demonstrating the application of these methods. Over the past decade, research has emphasized development of more specific testing procedures for conducting 10-d toxicity tests with the amphipod Hyalella...
Authors
C.G. Ingersoll, G.T. Ankley, D.A. Benoit, E.L. Brunson, G.A. Burton, F.J. Dwyer, R.A. Hoke, P.F. Landrum, T. J. Norberg-King, P. V. Winger
The value and vulnerability of small estuarine islands for conserving metapopulations of breeding waterbirds The value and vulnerability of small estuarine islands for conserving metapopulations of breeding waterbirds
Compelling arguments for preserving large habitat ‘islands’ have been made for a number of animal groups, but most commonly for terrestrial birds. We argue that, for many species of waterbirds nesting in coastal estuaries, maintaining numerous small islands may be a more effective management strategy than maintaining larger islands or reserves. In this study, the number of great white...
Authors
R.M. Erwin, Jeff S. Hatfield, T.J. Wilmers
Conservation partnerships in the lower Mississippi Alluvial Valley Conservation partnerships in the lower Mississippi Alluvial Valley
No abstract available.
Authors
D.R. Loesch, D.J. Twedt, K. J. Reinecke
Evaluation of an extendable pole-net to collect heron eggs in the canopy of tall trees Evaluation of an extendable pole-net to collect heron eggs in the canopy of tall trees
A pole, extendable from 2 to 8 m, with a nylon-mesh collecting net, was used to retrieve eggs from nests of Great Blue Herons (Ardea herodias) in the canopy of floodplain forests. A total of 200 eggs was collected for contaminant analysis from ten colonies along the upper Mississippi River during the spring of 1993. Low egg breakage (1%) and acceptable survival of embryos in an incubator...
Authors
R. K. Hines, T. W. Custer