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
Seasonal distribution of bird populations at the Patuxent Research Refuge Seasonal distribution of bird populations at the Patuxent Research Refuge
High concentrations of mercury from past mining activities have accumulated in the food chain of fish-eating birds nesting along the mid to lower Carson River. Activities of nine plasma and tissue enzymes, and concentrations of other plasma and tissue constituents were measured for black-crowned night-heron, Nycticorax nycticorax, (BCNH) and snowy egret, Egretta thula, (SE) nestlings...
Authors
D. J. Hoffman, Charles J. Henny, E. F. Hill, J.A. Keith, R. A. Grove
Wildlife in a chemical world Wildlife in a chemical world
Snapping turtles were collected by the Ohio State EPA from six locations in Ohio believed to have different contaminant concentrations. Previously we reported significant correlations among four hepatic microsomal dealkylases and CYP1A in these turtles. Herein we compare ethoxyresorufin-O-dealkylase (EROD) and methoxyROD (MROD) to tissue contaminant concentrations. For Fifty-four of...
Authors
J.P. Linduska
Gray-backed tern: Sterna lunata Gray-backed tern: Sterna lunata
No abstract available.
Authors
C.S. Mostello, N.A. Palaia, R. B. Clapp
Ecotoxicology of Amphibians and Reptiles Ecotoxicology of Amphibians and Reptiles
For many years, ecological research on amphibians and reptiles has lagged behind that of other vertebrates such as fishes, birds, and mammals, despite the known importance of these animals in their environments. The lack of study has been particularly acute in the he area of ecotoxicology where the number of published scientific papers is a fraction of that found for the other vertebrate...
Roadside versus remote: Is the habitat sampled by the Breeding Bird Survey in Maryland representative of statewide conditions? Roadside versus remote: Is the habitat sampled by the Breeding Bird Survey in Maryland representative of statewide conditions?
The North American Breeding Bird Survey (BBS) has received criticism that the bird habitat sampled along the 24.5 mile long roadside transects may not be proportional to regional totals. If true, trends in bird populations recorded by the BBS may not be sensitive predictors of regional or continental change in songbird abundance. To test whether the approximately 60 BBS routes in...
Authors
D.D. Boone, J.R. Sauer, I. Thomas
A removal model for estimating detection probabilities from point-count surveys A removal model for estimating detection probabilities from point-count surveys
We adapted a removal model to estimate detection probability during point count surveys. The model assumes one factor influencing detection during point counts is the singing frequency of birds. This may be true for surveys recording forest songbirds when most detections are by sound. The model requires counts to be divided into several time intervals. We used time intervals of 2, 5, and...
Authors
G.L. Farnsworth, K. H. Pollock, J.D. Nichols, T.R. Simons, J.E. Hines, J.R. Sauer
Series forward Series forward
No abstract available.
Authors
J.M. Weeks, S. O’Hare, Barnett A. Rattner
Sources of variation in survival and recovery rates of American Woodcock Sources of variation in survival and recovery rates of American Woodcock
All bandings and recoveries of American woodcock (Scolopax minor) since the last similar investigation of survival and recovery rates were examined for this study. The previous parameter estimates from the Eastern Region were augmented with 4 years of bandings. Banding effort in the Central Region was sufficient to conduct analyses for the 5 years after the previous analyses. Females...
Authors
D.G. Krementz, J.G. Bruggink
New Jersey Bird Records Committee - Annual Report, 2000 New Jersey Bird Records Committee - Annual Report, 2000
No abstract available.
Authors
L. Larson, P. Lehman, P. A. Buckley, J. Burgiel, M. O'Brien
Piping Plover brood foraging ecology on New York barrier islands Piping Plover brood foraging ecology on New York barrier islands
Effective management of piping plover (Charadrius melodus) populations requires knowledge of the habitats that foster successful reproduction. We studied piping plover chick foraging ecology and survival on the central barrier islands of Long Island, New York, 1992 and 1993. Within the 90-km study area, all 1-km beach segments with ephemeral pools or bay tidal flats were used for nesting...
Authors
S.P. Elias, J.D. Fraser, P. A. Buckley
Influence of inner-continental shelf geologic framework on the evolution and behavior of the barrier-island system between Fire Island Inlet and Shinnecock Inlet, Long Island, New York Influence of inner-continental shelf geologic framework on the evolution and behavior of the barrier-island system between Fire Island Inlet and Shinnecock Inlet, Long Island, New York
High-resolution, sea-floor mapping techniques, including sidescan-sonar and subbottom profiling, were used to investigate how the geologic framework of the inner-continental shelf influenced the Holocene evolution and modern behavior of the Fire Island barrier-island system, Long Island, New York. The inner-continental shelf off Long Island is divided into two physiographic provinces by...
Authors
W. C. Schwab, E.R. Thieler, J.R. Allen, D.S. Foster, B.A. Swift, J. F. Denny