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: 41772
Effects of dietary vanadium in mallard ducks
Adult mallard ducks fed 0, 1, 10, or 100 ppm vanadyl sulfate in the diet were sacrificed after 12 wk on treatment; tissues were analyzed for vanadium. No birds died during the study and body weights did not change. Vanadium accumulated to higher concentrations in the bone and liver than in other tissues. Concentrations in bones of hens were five times those in bones of drakes, suggesting an intera
Authors
D. H. White, M. P. Dieter
Texas colonial waterbird census, 1973-1976
No abstract available.
Authors
Gene W. Blacklock, D.R. Blankinship, S. Kennedy, K. A. King, R.T. Paul, R.D. Slack, J.C. Smith, R.C. Telfair
Herons and their allies: Atlas of Atlantic Coast colonies, 1975 and 1976
No abstract available.
Authors
R. G. Osborn, T. W. Custer
Use of circular plot surveys in estimating the density of a population with poisson scattering
No abstract available.
Authors
F.L. Ramsey, J. M. Scott
Newsletter for the Accelerated Research Program for migratory shore and upland game birds
No abstract available.
Authors
R.A. Coon
The California condor, 1966-1976: A Look at its Past and Future
The California condor (Gymnogyps californianus) was studied on about 900 field days between 1966 and 1976. In addition, some 1,000 items of literature, specimen records from 56 museums, and 3,500 reports of condor sitings by cooperators were analyzed. Distribution does not appear to have changed significantly since the 1930's, although there are some areas within the. species' range that have be
Authors
S.R. Wilbur
Some limiting factors and research needs of endangered Hawaiian forest birds
No abstract available.
Authors
W.E. Banko