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
Federal research on the conservation of migratory nongame birds in the United States Federal research on the conservation of migratory nongame birds in the United States
In the United States, the term 'nongame birds' applies to all bird species that are neither hunted nor legalIy endangered or threatened. Although ultimate responsibility for protection of migratory nongame birds lies with the federal government, research and management efforts by the key federal landholding agencies have historically emphasized species of economic importance, game birds...
Authors
M.A. Howe
Ecological impacts of nature-dependent tourism Ecological impacts of nature-dependent tourism
No abstract available.
Authors
J. L. Marion
Canvasback Aythya valisineria Canvasback Aythya valisineria
No abstract available.
Authors
G.M. Haramis
Increased population densities of Amblyomma americanum (Acari: Ixodidae) on Long Island, New York Increased population densities of Amblyomma americanum (Acari: Ixodidae) on Long Island, New York
Lone star ticks, Amblyomma americanum comprised a significantly greater proportion of total ticks flagged on eastern Long Island and Fire Island, New York, in 1986 and 1990 than in samples reported by other authors from the 1940s (when A. americanum was not collected by flagging or from hosts) and the 1970s. Therefore, population densities of A. americanum apparently have increased in...
Authors
H. S. Ginsberg, C.P. Ewing, A.F. O'Connell, E.M. Bosler, James G. Daley, M. W. Sayre
Contaminant accumulation in marine birds wintering in Puget Sound Contaminant accumulation in marine birds wintering in Puget Sound
No abstract available.
Authors
Charles J. Henny, L. J. Blus, R. A. Grove
Satellite monitors cranes migrating from Siberia Satellite monitors cranes migrating from Siberia
No abstract available.
Authors
D. H. Ellis, Y. Markin
Effects of submersed macrophytes on dissolved oxygen, pH and temperature under different conditions of wind, tide and bed structure Effects of submersed macrophytes on dissolved oxygen, pH and temperature under different conditions of wind, tide and bed structure
Seasonal data on diurnal dissolved-oxygen concentration (DO), pH, temperature and chlorophyll-a were collected and species composition and vertical structure of macrophyte beds were analyzed in the tidal Potomac River during the 1987 growing season. The relationships among these variables and physical and climatic factors were analyzed. Elevated surface temperatures, DO and pH were found...
Authors
V. Carter, N. B. Rybicki, R.S. Hammerschlag
Indicators of severe undernutrition in urine of free-ranging elk during winter Indicators of severe undernutrition in urine of free-ranging elk during winter
No abstract available.
Authors
G. D. DelGiudice, U.S. Seal, L.D. Mech
Multifragment alleles in DNA fingerprints of the parrot, Amazona ventralis Multifragment alleles in DNA fingerprints of the parrot, Amazona ventralis
Human DNA probes that identify variable numbers of tandem repeat loci are being used to generate DNA fingerprints in many animal and plant species. In most species the majority of the sc rable autoradiographic bands of the DNA fingerprint represent alleles from numerous unlinked loci. This study was initiated to use DNA fingerprints to determine the amount of band-sharing among captive...
Authors
M.K. Brock, B.N. White
Trends in North American small mammals found in common barn-owl (Tyto alba) dietary studies Trends in North American small mammals found in common barn-owl (Tyto alba) dietary studies
Data on mammals were compiled from published studies of common barn-owl (Tyto alba) pellets. Mammalian composition of pellet samples was analyzed within geographic regions in regard to year, mean annual precipitation, latitude, and number of individual mammals in the sample. Percentages of individuals in pellets that were shrews increased whereas the percentages of rodents decreased with...
Authors
D. R. Clark, C.M. Bunck
Reproductive vulnerability: Parental attendance around hatching in roseate (Sterna dougallii) and common (S. hirundo) terns Reproductive vulnerability: Parental attendance around hatching in roseate (Sterna dougallii) and common (S. hirundo) terns
Presence of one or both members of a pair at the nest site during the incubation and early chick stage reduces reproductive losses due to predation and weather stresses. The authors monitored the presence of pair members by the temporary removal of one member of several pairs of Roseate (Sterna dougallii ) and Common (Sterna hirundo ) Terns at nests at Cedar Beach, New York, to determine...
Authors
J. Burger, M. Gochfeld
Mammal mortality at Arizona, California, and Nevada gold mines using cyanide extraction Mammal mortality at Arizona, California, and Nevada gold mines using cyanide extraction
Five-hundred nineteen mammals were reported dead at cyanide-extraction gold mines in Arizona [USA], California, and Nevada from 1984 through 1989. Most numerous were rodents (34.9%) and bats (33.7%); 'bat' was the most often reported category among 24 species or species groups. There are an estimated 160 cyanide-extraction gold mines in these three states, and the number is increasing...
Authors
D. R. Clark, R. L. Hothem