Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16912
Special techniques, part D: Reintroduction techniques Special techniques, part D: Reintroduction techniques
No abstract available.
Authors
Meenakshi Nagendran, R.P. Urbanek, D. H. Ellis
Records Records
No abstract available.
Authors
D. H. Ellis, J.A. Taylor, C.M. Mirande, J.A. Langenberg, M. Wellington, B.H. Powell, J.L. McMillen
Measuring and monitoring biological diversity: Standard methods for mammals Measuring and monitoring biological diversity: Standard methods for mammals
Measuring and Monitoring Biological Diversity: Standard Methods for Mammals provides a comprehensive manual for designing and implementing inventories of mammalian biodiversity anywhere in the world and for any group, from rodents to open-country grazers. The book emphasizes formal estimation approaches, which supply data that can be compared across habitats and over time. Beginning with...
Egg and semen production Egg and semen production
No abstract available.
Authors
C.M. Mirande, G.F. Gee, A. Burke, P. Whitlock
Hydrogeologic framework of the diabase aquifer at the Boarhead Farms Superfund site, Bridgeton Township, Bucks County, Pennsylvania Hydrogeologic framework of the diabase aquifer at the Boarhead Farms Superfund site, Bridgeton Township, Bucks County, Pennsylvania
The hydrogeologic investigation at the Boarhead Farms Superfund site was done to characterize the framework of the diabase aquifer underlying the site. The primary water-producing fracture system is less than 30 feet below land surface. Water-bearing fractures were not found deeper than 50 feet below land surface. The overburden soil is thin and ranges from 4 to 14 feet thick. The...
Authors
Curtis L. Schreffler
U. S. Geological Survey programs in Pennsylvania U. S. Geological Survey programs in Pennsylvania
The U.S. Geological Survey (USGS) is involved in mapping and studying land, mineral, biological, and water resources and determining the risk from earthquakes and other natural hazards, which are of importance to the citizens of Pennsylvania. This Fact Sheet describes how the USGS is addressing some of the major environmental issues in Pennsylvania, which include availability of mineral...
Authors
Water Resources Division U.S. Geological Survey
National water summary on wetland resources National water summary on wetland resources
This National Water Summary on Wetland Resources documents wetland resources in the United States. It presents an overview of the status of knowledge of wetlands at the present time-what they are, where they are found, why they are important, and the controversies surrounding them, with an emphasis on their hydrology. Wetland resources in each State, the District of Columbia (combined...
Drought-trigger ground-water levels and analysis of historical water-level trends in Chester County, Pennsylvania Drought-trigger ground-water levels and analysis of historical water-level trends in Chester County, Pennsylvania
The Chester County observation-well network was established in 1973 through a cooperative agreement between the Chester County Water Resources Authority (CCWRA) and the U.S. Geological Survey. The network was established to monitor local ground-water levels, to determine drought conditions, and to monitor ground-water-level trends. Drought-warning and drought-emergency water-level...
Authors
Curtis L. Schreffler