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
Effect of rising sea level on runoff and groundwater discharge to coastal ecosystems Effect of rising sea level on runoff and groundwater discharge to coastal ecosystems
Rising sea level can cause an increase in surface runoff from coastal areas by raising the watertable and thus increasing the incidence of saturated soil conditions in low-lying areas. As surface runoff increases, less rainfall will infiltrate into the ground and groundwater discharge to the coast will decrease. The link between sea level rise and runoff is critically dependent on the
Authors
W.K. Nuttle, J. W. Portnoy
Weaning in an Arctic wolf pack: Behavioral mechanisms Weaning in an Arctic wolf pack: Behavioral mechanisms
If behavioral mechanisms controlling suckling have been shaped by parent-offspring conflict in the ultimate sense, then proximate behavioral determinants of conflict should occur throughout lactation, with greatest intensity in the terminal phase, and offspring should have tactics for overcoming parental resistance. We observed the weaning process in a habituated wild wolf pack (Canis...
Authors
J.M. Packard, L.D. Mech, R.R. Ream
Dispersal in female white-tailed deer Dispersal in female white-tailed deer
Seven of 35 yearling female white-tailed deer (Odocoileus virginianus) in a migratory herd in northeastern Minnesota dispersed 18–168 km from natal ranges during late May through June. Dispersal as a proximate event appears voluntary and independent of deer density.
Authors
M.E. Nelson, L.D. Mech
Application of DNA fingerprinting to the recovery program of the endangered Puerto Rican parrot Application of DNA fingerprinting to the recovery program of the endangered Puerto Rican parrot
The Puerto Rican parrot was reduced to 13 animals in 1975 and as a conservation measure, a captive population was established from a few founders taken from the wild between 1973 and 1983. The number of successful breeding pairs in captivity has been !ow, and the captive breeding program has not been as productive as that of the closely related Hispaniolan parrot. Therefore, a genetic...
Authors
M.K. Brock, B.N. White
Determination of hatching date for eggs of black-crowned night-herons, snowy egrets and great egrets Determination of hatching date for eggs of black-crowned night-herons, snowy egrets and great egrets
Flotation of eggs in water and specific gravity of eggs of Black-crowned Night-Herons (Nycticorax nycticorax), Snowy Egrets (Egretta thula) and Great Egrets (Casmerodius albus) were evaluated as methods to determine date of hatching. Length of incubation and duration of hatching period were also documented for each species. Although species gravity was a better predictor of hatching date...
Authors
T. W. Custer, G.W. Pendleton, R.W. Roach
A new lizard of the genus Arthrosaura (Teiidae) from southern Venezuela A new lizard of the genus Arthrosaura (Teiidae) from southern Venezuela
No abstract available.
Authors
M.A. Donnelly, R.W. McDiarmid, C.W. Myers
Winter habitat occurrence patterns of temperate migrant birds in Belize Winter habitat occurrence patterns of temperate migrant birds in Belize
We used mist nets and point counts to sample bird populations in 61 sites in Belize during January-March of 1987-1991. Sites were classified as forest, second growth, woody agricultural crops (citrus, mango, cacao, and cashew), or non-woody agricultural crops (rice and sugar cane). We evaluated patterns of occurrence of wintering temperate migrant bird species in these habitats. Mist net...
Authors
D.K. Dawson, C.S. Robbins, J.R. Sauer
The shiny cowbird in the West Indian region--a future threat for Jamaica and the Cayman Islands? The shiny cowbird in the West Indian region--a future threat for Jamaica and the Cayman Islands?
No abstract available.
Authors
A. Cruz, J. W. Wiley, T.K. Nokamura, W. Post
DUCKDATA; A Bibliographic Data Base for North American Waterfowl (Anatidae) and their Wetland Habitats DUCKDATA; A Bibliographic Data Base for North American Waterfowl (Anatidae) and their Wetland Habitats
No abstract available.
Authors
K. J. Reinecke, Don Delnicki
Majestic Molokai: A nature lover's guide Majestic Molokai: A nature lover's guide
No abstract available.
Authors
A.K. Kepler, C. B. Kepler
A warbler in trouble: Dendroica cerulea A warbler in trouble: Dendroica cerulea
The Cerulean Warbler, like other Neotropical migrants, has suffered extensive loss of breeding habitat during the past century. It differs from many other migrants in its preference for mature floodplain forest with tall trees, a habitat that has become scarce over much of the warbler's original nesting range. Sensitivity to fragmentation within remaining suitable tracts places this...
Authors
C.S. Robbins, J.W. Fitzpatrick, P.B. Hamel