Search Results for the EPA National Library Catalog

Items Found: 83

Showing: Items 1 - 50

Your Search: (SUBJECT=Nitrogen cycle.)

 
 
 

1 2 NEXT
Select Item Title Year Published
Acid soil and acid rain the impact on the environment of nitrogen and sulphur cycling / 1986
Agriculture and the nitrogen cycle : assessing the impacts of fertilizer use on food production and the environment / 2004
Air quality criteria for oxides of nitrogen / 1991
Air quality criteria for oxides of nitrogen : final report. 1982
Air quality criteria for oxides of nitrogen. Volume 1. / 1991
Air quality criteria for oxides of nitrogen. Volume 2. / 1991
Animo Acid Composition of Suspended Particles, Sediment-Trap Material, and Benthic Sediment in the Potomac Estuary. 1993
Atmospheric nitrogen deposition loadings to the Chesapeake Bay : an initial analysis of the cost effectiveness of control options / 1996
Basic Research in the Aquatic Environment: Effects of Eutrophication on Phytoplankton Populations and Selected Species of Aquatic Vascular Plants. 1973
Baywide Nutrient Cycling (Denitrification) Monitoring Program-In situ loggers : progress report no. 38 (October-December 2011) / 2012
Biogeochemical cycling of carbon, nitrogen, and phosphorus in saltwater marshes of Lavaca Bay, Texas. 1975
Biology of the nitrogen cycle 2007
Carbon nitrogen sulfur : human interference in grand biospheric cycles 1985
Denitrification as affected by irrigation frequency of a field soil / 1980
Descriptive Basis for a Model of Soils Biogeochemistry (Chapter 12). 1994
Dynamics of the nitrogen cycle in lakes 1970
Dynamics of the Nitrogen Cycle in Lakes. 1970
Ecology of the nitrogen cycle 1987
Ecosystem stress from chronic exposure to low levels of nitrate / 2005
Effect of Unlined Treated Sewage Storage Ponds on Water Quality in the Ogallala Formation. 1971
Emission rates for biogenic NOx 1978
Environmental Control of Nitrogen Fixation in Lakes: I. In situ Nitrogen Fixation by Free Living Blue-Green Algae. II. Nitrogen Fixation by the Duck-Weed-Algal Association. 1974
Evaluation of pollution control processes : Upper Thompson Sanitation District / 1980
Experimental Inducement of Nitrogen Saturation at the Watershed Scale. 1993
Factors influencing the redistribution of nitrogen by cattle / 1980
Fate of Nitrogen in Aquatic Ecosystems. 1972
Feasibility of overland flow for treatment of raw domestic wastewater / 1974
Feasibility of overland-flow treatment of feedlot runoff / 1974
Field measurement of denitrification / 1977
Function of Marshes in Reducing Eutrophication of Estuaries of the Middle Atlantic Region. 1974
Human alteration of the global nitrogen cycle : causes and consequences / 1997
Hydrology and cycling of nitrogen and phosphorus in Little Bean Marsh : a remnant riparian wetland along the Missouri River in Platte County, Missouri, 1996-97 / 2004
Impact of Intensive Application of Pesticides and Fertilizers on Underground Water Recharge Areas Which May Contribute to Drinking Water Supplies. A Preliminary Review. 1975
Interactive Effects of O3 and CO2: Implications for Terrestrial Ecosystems. 1997
Kinetics of Algal Systems in Waste Treatment. Light Intensity and Nitrogen Concentration as Growth-Limiting Factors. 1968
Modeling dynamics of biological and chemical components of aquatic ecosystems / 1975
Modeling nitrogen cycling and export in forested watersheds using HSPF 1996
Nitrogen Budget of a North Carolina Estuary. 1974
Nitrogen cycle in surface and subsurface waters : technical completion report / 1968
Nitrogen cycling and assimilative capacity of nitrogen and phosphorus by riverine wetland forests 1981
Nitrogen cycling and phytoplankton growth in the Neuse River, North Carolina 1983
Nitrogen cycling dynamics in agricultural fields fertilized with liquid swine waste-- microbial nitrification and denitrification 2004
Nitrogen cycling in coastal marine environments 1988
Nitrogen cycling in microcosms and application to the biology of the northern arm of the Great Salt Lake 1976
Nitrogen cycling in the Americas : natural and anthropogenic influences and controls / 2006
Nitrogen cycling in the North Atlantic Ocean and its watersheds / 1996
Nitrogen dynamics in forested watersheds of the Chesapeake Bay : 17-19 June 1997, Frostburg, MD / 1997
Nitrogen in the environment : sources, impacts, management / 1993
Nitrogen in the marine environment / 1983
Nitrogen isotope techniques 1992
1 2 NEXT

Save, Print or Email Selected Records