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
Sora rail studies on the Patuxent River, Maryland Sora rail studies on the Patuxent River, Maryland
The freshwater marshes of the tidal Patuxent River are well known for their annual fall concentration of migrant soras (Porzana carolina) and were formerly the most famous rail hunting grounds in the Chesapeake Bay region. Because of concern over the apparent long-term decline in number of soras and the decline in the quality of the Patuxent marshes, especially the loss of wild rice...
Authors
G. Michael Haramis, Gregory D. Kearns
Research: Materials and techniques Research: Materials and techniques
No abstract available.
Authors
R.W. McDiarmid, R. Altig
Historical land cover changes in the Great Lakes Region Historical land cover changes in the Great Lakes Region
Two different methods of reconstructing historical vegetation change, drawing on General Land Office (GLO) surveys and fossil pollen deposits, are demonstrated by using data from the Great Lakes region. Both types of data are incorporated into landscape-scale analyses and presented through geographic information systems. Results from the two methods reinforce each other and allow...
Authors
K.L. Cole, M.B. Davis, F. Stearns, G. Guntenspergen, K. Walker
A spatial and genetic analysis of Cowbird host selection A spatial and genetic analysis of Cowbird host selection
Our study of brood parasitism patterns in forest communities revealed the egg-laying frequency and host selection patterns of female cowbirds. By integrating molecular genetics and spatial data, we have the first published estimate on cowbird laying rates in field studies. The 29 females in the study laid only 1-5 eggs each, much lower than previous estimates from captive cowbirds and
Authors
D.C. Hahn, J.A. Sedgwick, I.S. Painter, N.J. Casna
Demographic parameter estimation for experimental landscape studies on small mammal populations Demographic parameter estimation for experimental landscape studies on small mammal populations
No abstract available.
Authors
J.D. Nichols, C.J. Coffman
A taxonomic study of crested caracaras (Falconidae) A taxonomic study of crested caracaras (Falconidae)
The taxonomic status of the crested caracaras (Caracara spp., Falconidae) has been unsettled for many years. Current sources such as the AOU Check-list recognize a single species that includes three taxa formerly considered distinct, citing observations by Hellmayr and Conover (1949) on two specimens considered to be intermediate. We studied plumage characters and measurements of over...
Authors
C.J. Dove, Richard C. Banks
[Book review] A Neotropical Companion: An Introduction to the Animals, Plants, and Ecosystems of the New World Tropics,. second edition, by John Kricher, Princeton University Press, 1997 [Book review] A Neotropical Companion: An Introduction to the Animals, Plants, and Ecosystems of the New World Tropics,. second edition, by John Kricher, Princeton University Press, 1997
No abstract available.
Authors
C.S. Robbins
Sex determination of the Acadian Flycatcher using discriminant analysis Sex determination of the Acadian Flycatcher using discriminant analysis
I used five morphometric variables from 114 individuals captured in Arkansas to develop a discriminant model to predict the sex of Acadian Flycatchers (Empidonax virescens). Stepwise discriminant function analyses selected wing chord and tail length as the most parsimonious subset of variables for discriminating sex. This two-variable model correctly classified 80% of females and 97% of...
Authors
R.R. Wilson
Birds and the Animal Welfare Act Birds and the Animal Welfare Act
No abstract available.
Authors
Glenn H. Olsen