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
A new species of Percina (Perciformes: Percidae) from the Apalachicola River drainage, southeastern United States A new species of Percina (Perciformes: Percidae) from the Apalachicola River drainage, southeastern United States
Percina crypta, the Halloween Darter, is described as a new species endemic to the Chattahoochee and Flint River systems in Georgia and Alabama. Percina crypta differs from sympatric Percina nigrofasciata in having narrowly separated dorsal saddles (inter-saddle spaces typically less than or equal to saddle width, compared to frequently wider than saddle width in P. nigrofasciata), in...
Authors
Mary C. Freeman, B. J. Freeman, N.M. Burkhead, C.A. Straight
History of 'computerization' of bird-banding records History of 'computerization' of bird-banding records
No abstract available.
Authors
C.S. Houston, M. K. Klimkiewicz, C.S. Robbins
Tidal marshes as disequilibrium landscapes? Lags between morphology and Holocene sea level change Tidal marshes as disequilibrium landscapes? Lags between morphology and Holocene sea level change
Historical acceleration in the rate of global sea level rise and recent observations of marsh degradation highlight the importance of understanding how marshes respond to sea level change. Here, we use an existing numerical model to demonstrate that marsh morphology, and its effect on biological productivity and vertical accretion, could lag century-scale sea level rise rate oscillations...
Authors
M. L. Kirwan, A.B. Murray
Effects of human activity of breeding American Oystercatchers, Cumberland Island National Seashore, Georgia, USA Effects of human activity of breeding American Oystercatchers, Cumberland Island National Seashore, Georgia, USA
Abstract.-Increased human use of coastal areas threatens the United States population of American Oystercatchers (Haematopus palliatus), a species of special concern. Biologists often attribute its low numbers and reproductive success to human disturbance, but the mechanism by which human presence reduces reproductive success is not well understood. During the 2003 and 2004 breeding...
Authors
J. B. Sabine, J.M. Meyers, C. T. Moore, Sara H. Schweitzer
A double-observer method to estimate detection rate during aerial waterfowl surveys A double-observer method to estimate detection rate during aerial waterfowl surveys
We evaluated double-observer methods for aerial surveys as a means to adjust counts of waterfowl for incomplete detection. We conducted our study in eastern Canada and the northeast United States utilizing 3 aerial-survey crews flying 3 different types of fixed-wing aircraft. We reconciled counts of front- and rear-seat observers immediately following an observation by the rear-seat...
Authors
M.D. Koneff, J. Andrew Royle, M.C. Otto, J.S. Wortham, J.K. Bidwell
Juvenile survival in a tropical population of roseate terns: Interannual variation and effect of tick parasitism Juvenile survival in a tropical population of roseate terns: Interannual variation and effect of tick parasitism
Many demographic studies on long-lived seabirds have focused on the estimation of adult survival, but much less is known about survival during the early years of life, especially in tropical species. We report analyses of a capture–recapture dataset of 685 roseate terns ringed as fledglings and adults between 1998 and 2005 on Aride Island, Seychelles, and recaptured/resighted at the same...
Authors
David Monticelli, Jaime A. Ramos, James E. Hines, James D. Nichols, Jeffrey A. Spendelow
Effects of methylmercury exposure on glutathione metabolism, oxidative stress, and chromosomal damage in captive-reared common loon (Gavia immer) chicks Effects of methylmercury exposure on glutathione metabolism, oxidative stress, and chromosomal damage in captive-reared common loon (Gavia immer) chicks
We quantified the level of dietary mercury (Hg), delivered as methylmercury chloride (CH3HgCl), associated with negative effects on organ and plasma biochemistries related to glutathione (GSH) metabolism and oxidative stress, and chromosomal damage in captive-reared common loon (Gavia immer) chicks reared from hatch to 105 days. Mercury-associated effects related to oxidative stress and...
Authors
K.P. Kenow, D. J. Hoffman, R. K. Hines, M.W. Meyer, J. W. Bickham, C. W. Matson, K.R. Stebbins, P. Montagna, A. Elfessi
Endocrine effects of the herbicide linuron on the American Goldfinch (Carduelis tristis) Endocrine effects of the herbicide linuron on the American Goldfinch (Carduelis tristis)
Certain contaminants alter normal physiological function, morphology, and behavior of exposed organisms through an endocrine mechanism. We evaluated how the herbicide linuron, an endocrine-active compound, affects physiological parameters and secondary sex characteristics of the American Goldfinch (Carduelis tristis). When administered at relatively low doses (control, 1.0, 4.0, and 16.0...
Authors
K.M. Sughrue, M.C. Brittingham, J.B. French
Visual implant elastomer mark retention through metamorphosis in amphibian larvae Visual implant elastomer mark retention through metamorphosis in amphibian larvae
Questions in population ecology require the study of marked animals, and marks are assumed to be permanent and not overlooked by observers. I evaluated retention through metamorphosis of visual implant elastomer marks in larval salamanders and frogs and assessed error in observer identification of these marks. I found 1) individual marks were not retained in larval wood frogs (Rana...
Authors
Evan H. Campbell Grant