Record Display for the EPA National Library Catalog

RECORD NUMBER: 706 OF 723

OLS Field Name OLS Field Data
Main Title Watershed Nitrogen Management: Upper Potomac River Basin Case Study.
Author Groffman, P. M. ; Jaworski, N. A. ;
CORP Author Environmental Research Lab., Narragansett, RI. ;Rhode Island Univ., Narragansett. ;Chesapeake Research Consortium, Inc., Baltimore, MD.
Publisher c1990
Year Published 1990
Report Number EPA/600/D-91/233 ;ERLN-1255;
Stock Number PB92-108083
Additional Subjects Watersheds ; Nitrogen ; Potomac River Basin ; Water pollution control ; Nitrification ; Nutrients ; Best technology ; Forestry ; Industrial wastes ; Fertilizers ; Urbanization ; Population growth ; Environmental transport ; Water management(Applied) ; Animal wastes ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB92-108083 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/24/1992
Collation 14p
Abstract
Are watershed processes controlling the yield, transport, and transformation of carbon, nitrogen, and phosphorus scientifically understood and amenable to man's control in an ecological management framework. For many large estuarine ecosystems such as the Hudson, Chesapeake Bay, and Pamlico Sound, the major contribution of nutrients is from numerous sources within the terrestrial portion of the estuarine watershed. The watershed's topography, geology and hydrology along with land use greatly influences the nutrients yield, transport and transformation. The yield and flux rates can often vary by two orders of magnitude among sub basins within a watershed. The large variability observed in nitrification rates, denitrification rates, carbon yield, etc. suggest possible mechanics for management if one can determine controlling factors and if man can target practices based on optimal use of natural processes to manage nutrients on watershed bases. Presented in the paper are some suggested concepts and insights which could possibly enhance the selection and evaluation of best management practices, forestry practices, urbanization practices, etc., leading to total watershed nutrient management.