Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
Subchronic hepatotoxicity of selenomethionine ingestion in mallard ducks
Twoyearold male mallards (Anas platyrhynchos) received a control diet (0.2 ppm Se) or diets containing 1, 2, 4, 8, 16, or 32 ppm Se as selenomethionine for 14 wk. Se accumulated readily in the liver in a dosedependent manner, reaching a mean concentration of 29 ppm (wet weight) in the 32 ppm group. Dietary Se of 2 ppm or greater increased plasma glutathione peroxidase activity. Mortality (10%) and
Authors
D. J. Hoffman, G. H. Heinz, L. J. LeCaptain, C. M. Bunck, D. E. Green
Demography and natural history of the common fruit bat, Artibeus jamaicensis, on Barro Colorado Island, Panama
Bats were marked and monitored on Barro Colorado Island, Panama, to study seasonal and annual variation in distribution, abundance, and natural history from 1975 through 1980. Data gathered advances our knowledge about flocking; abundance; feeding strategies; social behavior; species richness; population structure and stability; age and sex ratios; life expectancy and longevity; nightly, seasonal,
Use of Wetland Habitats by Selected Nongame Water Birds in Maine
We examined the use of 87 palustrine and lacustrine wetlands by nongame water birds in central and eastern Maine using 3,527 h of observation (1,501 visits) made during April-August, 1977-85. Wetlands used by 15 species of water birds were distinguished from those not used, according to 20 habitat features. The species were the common loon (Gavia immer) , pied-billed grebe (Podilymbus podiceps), d
Authors
J.P. Gibbs, J. R. Longcore, D.G. McAuley, J.K. Ringelman
Cyanide Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review
No abstract available.
Authors
R. Eisler
Restoration of Wolves in North America
No abstract available.
Authors
J.M. Peek, D.E. Brown, S.R. Kellert, L. D. Mech, J.H. Shaw, V. Van Ballenberghe
Winter nutrition and population ecology of white-tailed deer in the central Superior National Forest
No abstract available.
Authors
G. D. DelGiudice, M.E. Nelson, L. D. Mech
The birds of Cerro de la Neblina, Territorio Federal Amazonas, Venezuela
No abstract available.
Authors
D.E. Willard, M.S. Foster, G.F. Barrowclough, R.W. Dickerman, P.F. Cannell, S.L. Coats, J.L. Cracraft, J.P. O'Neill
Results from the application of a campsite inventory and impact monitoring system in eleven wilderness areas of the Jefferson National Forest
No abstract available.
Authors
J. L. Marion
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 and endan
Authors
M.A. Howe
Organochlorines accumulate in heron and egret chicks sampled in the Houston Ship Channel
The National Contaminant Monitoring Program (NCBP) is an effort of the U.S. Fish and Wildlife Service to measure concentrations of DDT and other persistent chemicals in the environment and to quantify changes in these levels. The NCBP has established a network of sampling stations in segments of the environment for which Federal agencies have authority. The wildlife component of this program, ad
Authors
T. W. Custer
The occurrence of chlorostyrenes in egrets and herons collected in Galveston Bay
No abstract available.
Authors
C.P. Rice, T. W. Custer