Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41778
The effects of changes in habitat on northern hardwood forest bird communities
No abstract available.
Authors
B.R. Noon, V.P. Bingham, J.P. Noon
Assessment and population management of North American migratory birds
No abstract available.
Authors
F.W. Martin, R.S. Pospahala, J. D. Nichols
Effect of forest fragmentation on bird populations
Many of the insectivorous songbird species that winter in the tropics are dependent on large unbroken tracts of forest during the breeding season. These species are disappearing from localities where forests are becoming fragmented. By long-range planning, managers can prevent local extinctions of these area-sensitive birds through use of such techniques as management in large units, retention o
Authors
C.S. Robbins
Environmental contaminant studies by the Patuxent Wildlife Research Center
Evaluation of the effects of environmental contaminants on wildlife is geared to interpreting events in the field, especially population effects, and both field and laboratory studies are planned for this purpose; procedures are adapted to specific problems and therefore do not include strict protocols or routine testing. Field evaluations include measurements of cholinesterase inhibition in brain
Authors
G. H. Heinz, E. F. Hill, W. H. Stickel, L. F. Stickel
Endrin versus 12-ketoendrin in birds and rodents
British workers showed that in rats the endrin metabolite, 12-ketoendrin, was five times as toxic as endrin, was probably the ultimate cause of death, and was the main form of endrin in the brain at death. In cows and rabbits, however, they detected little of this metabolite. They found none in hens. We found no 12-ketoendrin in birds of four orders that had been heavily exposed to or killed by
Authors
W. H. Stickel, T. E. Kaiser, W. L. Reichel
Canada geese of the Patuxent Wildlife Research Center: family relationships, behavior and productivity
Geese described are non-migratory, free-flying Todd's Canada geese (Branta canadensis interior). The genealogy of 261 of these geese was traced by archival research and three years of field observations. Nest locations and densities, preferences for various types of artificial nest structures, clutch sizes, hatching success, brood survival to flight stage, and food habits were recorded. Resu
Authors
L.H. Rummel
Vegetation and vertebrates of the Patuxent Wildlife Research Center: outline of ecology and annotated lists. A reprint, with new supplements, of 'Vegetation of the Patuxent Research Refuge, Maryland'
No abstract available.
Authors
N. Hotchkiss, R. E. Stewart
Monitoring fish and wildlife for environmental pollutants
No abstract available.
Authors
Thomas J. O'Shea, Bob Hines, J. Larry Ludke
Survival of one- and two-year-old monosex grass carp in small ponds
Limited information has become available on the survival of monosex (female) grass carp (Ctenopharyngodon idella) reared in earthen ponds. Monosex fish produced in 1975 (Stanley 1976) were reared 27 months in earthen ponds at the Fish Farming Experimental Station, Stuttgart, Arkansas. Periodic transfers of these fish to different ponds afforded the opportunity to obtain survival information. Thoma
Authors
A.E. Thomas, R.R. Carter, D.C. Greenland
Toxicity of fishery chemicals to the asiatic clam, Corbicula manilensis
The Asiatic clam (Corbicula manilensis), a species introduced into U. S. waters, has spread rapidly, and its ability to survive, reproduce, and spread has caused concern. Aquatic biologists suspect that the clams may crowd out indigenous mollusks, and the animals sometimes plug water intakes and leave shell deposits that interfere with sand and gravel operations. The toxicity of 20 commonly used f
Authors
Jack H. Chandler, L. L. Marking