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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 passion for wildlife: The history of the Canadian Wildlife Service A passion for wildlife: The history of the Canadian Wildlife Service

This intimate historical account was contracted in 1996 by Environment Canada to naturalist-writer Burnett, who interviewed more than 120 present and former Canadian Wildlife Service (CWS) employees of the 1947–1997 period. Each of the 10 chapters addresses a major topic, followed by a brief account of the chief activities of a five-year period. For example, chapter 1 is on “The Genesis...
Authors
Chandler S. Robbins

Generalized estimators of avian abundance from count survey data Generalized estimators of avian abundance from count survey data

I consider modeling avian abundance from spatially referenced bird count data collected according to common protocols such as capture?recapture, multiple observer, removal sampling and simple point counts. Small sample sizes and large numbers of parameters have motivated many analyses that disregard the spatial indexing of the data, and thus do not provide an adequate treatment of...
Authors
J. Andrew Royle

Zinc toxicosis in a free-flying trumpeter swan (Cygnus buccinator) Zinc toxicosis in a free-flying trumpeter swan (Cygnus buccinator)

A trumpeter swan (Cygnus buccinator) was observed near it mill pond in Picher, Oklahoma. USA. It became weakened and emaciated after about 1 mo, was captured with little resistance, and taken into captivity for medical care. Serum chemistry results were consistent with hepatic, renal, and muscular damage. Serum zinc concentration was elevated at 11.2 parts per million (ppm). The swan was
Authors
J. W. Carpenter, G.A. Andrews, W. N. Beyer

Evaluating mallard adaptive management models with time series Evaluating mallard adaptive management models with time series

Wildlife practitioners concerned with midcontinent mallard (Anas platyrhynchos) management in the United States have instituted a system of adaptive harvest management (AHM) as an objective format for setting harvest regulations. Under the AHM paradigm, predictions from a set of models that reflect key uncertainties about processes underlying population dynamics are used in coordination...
Authors
P.B. Conn, W. L. Kendall

Cyanide hazards to plants and animals from gold mining and related water issues Cyanide hazards to plants and animals from gold mining and related water issues

Highly toxic sodium cyanide (NaCN) is used by the international mining community to extract gold and other precious metals through milling of high-grade ores and heap leaching of low-grade ores (Korte et al. 2000). The process to concentrate gold using cyanide was developed in Scotland in 1887 and was used almost immediately in the Witwatersrand gold fields of the Republic of South...
Authors
R. Eisler, Stanley N. Wiemeyer

DENSITY: software for analysing capture-recapture data from passive detector arrays DENSITY: software for analysing capture-recapture data from passive detector arrays

A general computer-intensive method is described for fitting spatial detection functions to capture-recapture data from arrays of passive detectors such as live traps and mist nets. The method is used to estimate the population density of 10 species of breeding birds sampled by mist-netting in deciduous forest at Patuxent Research Refuge, Laurel, Maryland, U.S.A., from 1961 to 1972...
Authors
M.G. Efford, D.K. Dawson, C.S. Robbins

Demographic analysis of dormancy and survival in the terrestrial orchid Cypripedium reginae Demographic analysis of dormancy and survival in the terrestrial orchid Cypripedium reginae

1. We use capture-recapture models to estimate the fraction of dormant ramets, survival and state transition rates, and to identify factors affecting these rates, for the terrestrial orchid Cypripedium reginae. We studied two populations in West Virginia, USA, for 11 years and investigated relationships between grazing and demography. Abe Run's population was small, with moderate...
Authors
Marc Kery, Katharine B. Gregg

Assessing the fit of site-occupancy models Assessing the fit of site-occupancy models

Few species are likely to be so evident that they will always be detected at a site when present. Recently a model has been developed that enables estimation of the proportion of area occupied, when the target species is not detected with certainty. Here we apply this modeling approach to data collected on terrestrial salamanders in the Plethodon glutinosus complex in the Great Smoky...
Authors
D.I. MacKenzie, L.L. Bailey
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