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
Estimation of population trajectories from count data Estimation of population trajectories from count data
Monitoring of changes in animal population size is rarely possible through complete censuses; frequently, the only feasible means of monitoring changes in population size is to use counts of animals obtained by skilled observers as indices to abundance. Analysis of changes in population size can be severely biased if factors related to the acquisition of data are not adequately...
Authors
W.A. Link, J.R. Sauer
An adaptive management approach to controlling suburban deer An adaptive management approach to controlling suburban deer
Distance sight-resight sampling has particular relevance to aerial surveys, in which height above ground and aircraft speed make the critical assumption of certain detection on the track-line unrealistic. Recent developments in distance sight-resight theory have left practical issues related to data collection as the major impediment to widespread use of distance sight-resight sampling...
Authors
C.K. Nielson, W.F. Porter, H.B. Underwood
Reproductive biology of the green turtle (Chelonia mydas) at Tern Island, French Frigate Shoals, Hawai`i Reproductive biology of the green turtle (Chelonia mydas) at Tern Island, French Frigate Shoals, Hawai`i
We monitored nesting of the green turtle (Chelonia mydas Linnaeus) on Tern Island, French Frigate Shoals, in the Northwestern Hawaiian Islands from 1986 through 1991. Egg oviposition occurred between 26 April and 20 October. Nesting peaked between mid-June and early August. Hatchlings emerged between mid-August and early October. Mean incubation period was 66.0 (range 53-97) days. Mean...
Authors
K. R. Niethammer, G.H. Balazs, Jeff S. Hatfield, G.L. Nakai, J.L. Megyesi
An assessment of campsite conditions in Great Smoky Mountains National Park An assessment of campsite conditions in Great Smoky Mountains National Park
This research effort designed and implemented a backcountry campsite monitoring program for Great Smoky Mountains National Park (GSMNP). This report reviews the need for visitor impact monitoring programs, describes monitoring procedures developed and applied at GSMNP, presents results from the first monitoring cycle, evaluates current park camping management policies, and provides
Authors
J. L. Marion, Y-L Leung
Population trends of black ducks and mallards from the North American Breeding Bird Survey: Are increases in mallards associated with declines in black ducks? Population trends of black ducks and mallards from the North American Breeding Bird Survey: Are increases in mallards associated with declines in black ducks?
No abstract available.
Authors
J.R. Sauer, Sam Droege
Comparative productivity of American black ducks and mallards breedings on the Chesapeake Bay Comparative productivity of American black ducks and mallards breedings on the Chesapeake Bay
No abstract available.
Authors
D.G. Krementz, Daniel B. Stotts, Vernon D. Stotts, G.W. Pendleton
Reproductive strategies for coping with poor conditions: responses of roseate terns to low food availability during the egg-laying period at Falkner Island, Connecticut Reproductive strategies for coping with poor conditions: responses of roseate terns to low food availability during the egg-laying period at Falkner Island, Connecticut
No abstract available.
Authors
J. A. Spendelow, James M. Zingo, Jeff S. Hatfield
Food consumption and retention time in captive whooping cranes (Grus americana) Food consumption and retention time in captive whooping cranes (Grus americana)
Food consumption, digesta retention time, and food preference were measured for captive whooping cranes fed pelleted diets. The basal commercial diet was compared to four mixtures containing 70% basal and 30% of one of four important winter foods for the whooping crane: blue crab (Callinectes sapidus), wolfberry fruit (Lycium carolinianum), live oak acorn (Quercus virginiana), or common...
Authors
J.T. Nelson, G.F. Gee, R.D. Slack
A closer look: Kirtland's warbler A closer look: Kirtland's warbler
No abstract available.
Authors
P.W. Sykes
An example of endurance in an old wolf, Canis lupus An example of endurance in an old wolf, Canis lupus
An 11 to 13-year-old Arctic Wolf (Canis lupus arctos) was observed chasing a young Arctic Hare (Lepus arcticus) for 6 to 7 minutes and catching it. This provides an example of the degree of endurance of which an old wolf is capable.
Authors
L.D. Mech
The potential of fruiting trees for habitat enhancement The potential of fruiting trees for habitat enhancement
No abstract available.
Authors
M.S. Foster