Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16746
Fish losses to double-crested cormorant predation in Eastern Lake Ontario, 1992-97 Fish losses to double-crested cormorant predation in Eastern Lake Ontario, 1992-97
We examined 4,848 regurgitated digestive pellets of double-crested cormorants (Phalacrocorax auritus) over a 6-year period (1992–97) to estimate annual predation on sport and other fishes in the eastern basin of Lake Ontario. We found more than 51,000 fish of 28 species. Using a model that incorporates annual colony nest counts; fledgling production rates; adult, immature, and young-of...
Authors
Robert M. Ross, James H. Johnson
Predicting chick survival and productivity of Roseate Terns from data on early growth Predicting chick survival and productivity of Roseate Terns from data on early growth
Early growth of Roseate Tern (Sterna dougallii) chicks is a strong predictor of chick survival and hence of productivity. We developed discriminant functions to predict chick survival from body-masses measured during the first 3 days of life. Productivity is estimated by assuming that almost all A-chicks (first-hatched in each brood) survive to fledging, and using the discriminant...
Authors
C.S. Robbins
Hydrogeologic investigations by the U.S. Geological Survey at the former Fort Benjamin Harrison, Marion County, Indiana Hydrogeologic investigations by the U.S. Geological Survey at the former Fort Benjamin Harrison, Marion County, Indiana
As part of the U.S. Department of Defense Base Realignment and Closure process, the former Fort Benjamin Harrison in Marion County, Indiana (called 'Fort Harrison' in this fact sheet), was placed on the Base Closure List in 1991. Property disposal and reuse activities began when Fort Harrison was decommissioned in 1995; work continues through 1999. Fort Harrison was located on...
Authors
Martin R. Risch
Record Extension and Streamflow Statistics for the Pleasant River, Maine Record Extension and Streamflow Statistics for the Pleasant River, Maine
Historical streamflow data for the Pleasant River are limited to 11 years (from 1980 to 1991) at the U.S. Geological Survey streamgaging station near Epping. Analysis of these data in conjunction with flow data from other nearby stations indicates that the 11 years of record for the Pleasant River may not be representative of longer-term conditions in the basin. A correlation between the
Authors
Joseph P. Nielsen
Cumulative Index to Chemicals and to Common and Scientific Names of Species Listed in Contaminant Hazard Reviews 1 through 34 Cumulative Index to Chemicals and to Common and Scientific Names of Species Listed in Contaminant Hazard Reviews 1 through 34
The Patuxent Wildlife Research Center Contaminant Hazard Reviews (CHR) series synthesizes ecotoxicological data of selected environmental contaminants, with emphasis on hazards to native species of flora and fauna. From 1985 through 1998 a total of 34 reviews were published in various Reports series of the U.S. Department of the Interior on agricultural pesticides (carbofuran, chlordane
Authors
R. Eisler
Adaptive harvest management of waterfowl: implementation and evolution Adaptive harvest management of waterfowl: implementation and evolution
No abstract available.
Authors
W. L. Kendall
Analysis of geophysical logs, at North Penn Area 6 Superfund Site, Lansdale, Montgomery County, Pennsylvania Analysis of geophysical logs, at North Penn Area 6 Superfund Site, Lansdale, Montgomery County, Pennsylvania
The U.S. Geological Survey (USGS), as part of technical assistance to the U.S. Environmental Protection Agency (USEPA), collected borehole geophysical log data in 34 industrial, commercial, and public supply wells and 28 monitor wells at the North Penn Area 6 Superfund Site, in Lansdale, Pa., from August 22, 1995, through August 29, 1997. The wells range in depth from 50 to 1,027 feet...
Authors
Randall W. Conger
Clathrate eustasy: Methane hydrate melting as a mechanism for geologically rapid sea-level fall Clathrate eustasy: Methane hydrate melting as a mechanism for geologically rapid sea-level fall
Although submarine methane hydrates or clathrates have been highlighted as potential amplifiers of modern global climate change and associated glacio-eustatic sea-level rise, their potential role in sea-level fall has not been appreciated. Recent estimates of the total volume occupied by gas hydrates in marine sediments vary 20-fold, from 1.2 × 1014 to 2.4 × 1015 m3. Using a specific...
Authors
J.F. Bratton
Breeding plan to preserve the genetic variability of the Kootenai River white sturgeon: Appendix D Breeding plan to preserve the genetic variability of the Kootenai River white sturgeon: Appendix D
No abstract available at this time
Authors
H. L. Kincaid