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
Population modeling and its role in toxicological studies Population modeling and its role in toxicological studies
A model could be defined as any abstraction from reality that is used to provide some insight into the real system. In this discussion, we will use a more specific definition that a model is a set of rules or assumptions, expressed as mathematical equations, that describe how animals survive and reproduce, including the external factors that affect these characteristics. A model...
Authors
John R. Sauer, Grey W. Pendleton
Oil, biological communities and contingency planning Oil, biological communities and contingency planning
The Oil Pollution Act of 1990 mandates the inclusion of a fish and wildlife response plan in the National Contingency Plan (NCP) and the creation of Area Committees that must develop an Area Contingency Plan (ACP). Area Contingency Plans must include a detailed annex containing a Fish and Wildlife and Sensitive Environments Plan. Tank vessels, offshore facilities, and certain onshore...
Authors
P.H. Albers
Managing and monitoring birds using point counts: Standards and applications Managing and monitoring birds using point counts: Standards and applications
No abstract available.
Authors
C.J. Ralph, Sam Droege, J.R. Sauer
Avian reproductive physiology Avian reproductive physiology
Knowledge of the many physiological factors associated with egg production , fertility, incubation, and brooding in nondomestic birds is limited. Science knows even less about reproduction in most of the 238 endangered or threatened birds. This discussion uses studies of nondomestic and, when necessary, domestic birds to describe physiological control of reproduction. Studies of the few
Authors
G.F. Gee
Wolves and caribou in Denali National Park, Alaska Wolves and caribou in Denali National Park, Alaska
Management of gray wolves (Canis lupus) and their prey in interior Alaska has been controversial for three decades (Harbo and Dean 1983). Recently, debate was rekindled with renewed interest in wolf control to bolster two populations of caribou (Rangifer tarandus). Our research in Denali National Park provides insights into the declines in caribou numbers over the last few years that are...
Authors
Layne G. Adams, L. David Mech
Canvasback ducks Canvasback ducks
Canvasbacks (Aythya valisineria) are unique to North America and are one of our most widely recognized waterfowl species. Unlike other ducks that nest and feed in uplands, diving ducks such as canvasbacks are totally dependent on aquatic habitats throughout their life cycle. Canvasbacks nest in prairie, parkland, subarctic, and Great Basin wetlands; stage during spring and fall on...
Authors
William L. Hohman, G.Michael Haramis, Dennis G. Jorde, Carl E. Korschgen, John Y. Takekawa
Habitat use at night by wintering American woodcock in coastal Georgia and Virginia Habitat use at night by wintering American woodcock in coastal Georgia and Virginia
Nocturnal habitats used by American woodcock (Scolopux minor) were studied using radio telemetry at two coastal wintering sites in Georgia (1982-84) and Virginia (1991-92). In Georgia, use of forested habitats at night was extensive while use of fields at night varied between years but generally was low. We found no difference in the probability of moving to a field at night among the...
Authors
David G. Krementz, John T. Seginak, Grey W. Pendleton
Spruce grouse on Mount Desert Island: fragmented habitat complicates species management Spruce grouse on Mount Desert Island: fragmented habitat complicates species management
No abstract available.
Authors
A.F. O'Connell, F. A. Servello, S.D. Whitcomb
Hydrologic modeling as a predictive basis for ecological restoration of salt marshes Hydrologic modeling as a predictive basis for ecological restoration of salt marshes
Roads, bridges, causeways, impoundments, and dikes in the coastal zone often restrict tidal flow to salt marsh ecosystems. A dike with tide control structures, located at the mouth of the Herring River salt marsh estuarine system (Wellfleet, Massachusetts) since 1908, has effectively restricted tidal exchange, causing changes in marsh vegetation composition, degraded water quality, and...
Authors
C. T. Roman, R.W. Garvine, J. W. Portnoy
Accumulation and loss of arsenic and boron, alone and in combination, in mallard ducks Accumulation and loss of arsenic and boron, alone and in combination, in mallard ducks
Arsenic and boron are common in the environment, and wildlife can be exposed to toxic concentrations through both natural and human-influenced processes. We exposed adult male mallard ducks to dietary concentrations of 300 ppm arsenic as sodium arsenate, 1,600 ppm boron as boric acid, or both and estimated the tissue accumulation and loss rates when the ducks were returned to...
Authors
G.W. Pendleton, M.R. Whitworth, Glenn H. Olsen
Partnerships: Innovative strategies for wildlife conservation Partnerships: Innovative strategies for wildlife conservation
No abstract available.
Authors
D.L. Trauger, W.C. Tilt, C.B. Hatcher