Skip to main content
U.S. flag

An official website of the United States government

Publications

These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16780

Summary appraisals of the nation's ground-water resources – Ohio region

Ground water in the Ohio Region is a large, important, and manageable resource that should have a significant role in regional water development. On the basis of a comparison of ground-water withdrawals with estimated ground-water recharge, it appears that the ground-water resources of the Ohio Region probably will not be used at full potential under existing development plans. Annual ground-water
Authors
Richard M. Bloyd

Population ecology of the mallard: III. Bibliography of published research and management findings

No abstract available. 
Authors
David R. Anderson, Patricia Ann Skaptason, Kathleen C. Fahey, Charles J. Henny

Hydrology of the abandoned coal mines in the Wyoming Valley, Pennsylvania

Mine-water discharge, into the Susquehanna River degrades the river's quality during periods of low flow to a point critical for subsistence of aquatic life. To determine what measures are required to provide a better quality mine-water discharge in the Wyoming Valley, mine hydrology and mine-water quality are related to mine-pool management. The addition of mine-pool outlets at several locations
Authors
Jerrald R. Hollowell

Monitoring mourning dove production via wing surveys in southeastern Pennsylvania

No abstract available.
Authors
L.S. Hoffman, D.E. Sheffer, J.S. Lindzey

Some helminth parasites of the American bald eagle

Bald eagles (Haliaeetus leucocephalus) found dead or moribund in the United States and Canada and submitted to Patuxent Wildlife Research Center were examined for helminth parasites. Nine genera of helminths were reported which include new host records for Clinostomum complanatum, Neogogatea pandionis, Centrorhynchus sp., Serratospiculum amaculata, Capillaria contorta, and Habronema americanum.
Authors
A.A. Kocan, L. N. Locke

Seasonal variation of the upper digestive tract yeast flora of feral pigeons

Feral pigeons were sampled over a 16-month period to determine whether their normal yeast flora varied according to season. Candida albicans and Saccharomyces telluris occurred during the entire sampling period, with C. albicans reaching its highest levels between August and January and S. telluris peaking from March through May. Candida krusei was present for 10 months but exhibited no predicta
Authors
R. M. Kocan, H.F. Hasenclever