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United States Environmental Protection Agency
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Search Results for the EPA National Library Catalog
Items Found: 449
Showing: Items 351 - 400
Your Search: (SUBJECT=Biological productivity)
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Report on Silver Lake, New Castle County, Delaware : EPA Region III /
Report on Sinclair Lake, Baldwin, Hancock, and Putnam Counties, Georgia : EPA Region IV /
Report on Swinging Bridge Reservoir, Sullivan County, New York : EPA Region II /
Report on Thompson Lake, Livingston County, Michigan : EPA Region V /
Report on Williams Pond, Sussex County, Delaware : EPA Region III /
Report to Congress on implementation section 403(c) of the Federal Water Pollution Control Act /
Respiration of Aquatic Macrophytes in Eutrophic Ecosystems.
Response of a salt marsh to oil spill and cleanup : biotic and erosional effects in the Hackensack Meadowlands, New Jersey /
Response of an Alaskan Wetland to Nutrient Enrichment.
Response of Estuarine Diatom Assemblages to Ultraviolet-B Radiation (290-320 nm).
Rock Lake, Jefferson County, Wisconsin.
Role of Aquatic Vascular Plants in the Eutrophication of Selected Lakes in Western Massachusetts.
Role of Organic Debris and Associated Micro-Organisms in Pelagic Estuarine Food Chains.
Role of Sediments in Eutrophication - A Preliminary Study.
Rome Pond, Jefferson County, Wisconsin.
Round Lake, Saratoga County, New York.
Sacandaga Reservoir, Fulton and Saratoga Counties, New York.
Saginaw Bay: An Evaluation of Existing and Historical Conditions.
Saint Clair River and Lake Saint Clair, Michigan: An Ecological Profile.
Salton Sea, California. Water Quality and Ecological Management Considerations.
Santeetlah Lake, Graham County, North Carolina.
Saratoga Lake, Saratoga County, New York.
Schroon Lake, Essex and Warren Counties, New York.
Seasonal Changes in Water Quality and Primary Productivity in Doe Valley Lake.
Seasonal fluctuations of major diatom species at five stations across Lake Michigan : May 1970-October 1972 /
Seasonal Variation of Potential Nutrient Limitation to Chlorophyll Production in Southern Lake Huron.
Sebasticook Lake, Penobscot County, Maine.
Section 74 seafood processing study : executive summary. Appendix, volume II : a report to the congress of the United States /
Seneca Lake, Schuyler County, New York.
Shawano Lake, Shawano County, Wisconsin.
Shelbyville Reservoir, Moultrie and Shelby Counties, Illinois.
Shenango River Reservoir, Mercer County, Pennsylvania. EPA Region III.
Significance of Cellulose Production by Planktonic Algae in Lacustrine Environments.
Sinissippi Lake, Dodge County, Wisconsin.
Six Mile Lake, St. Louis County, Minnesota.
Slatersville Reservoirs, Providence County, Rhode Island.
Soil Biology and Ecology.
Some Effects of Cadmium on Coniferous Forest Soil and Litter Microcosms.
Specific production of aquatic invertebrates
Spring Lake, Washington and Dakota Counties, Minnesota.
St. Louis Bay, St. Louis County, Minnesota, and Douglas County, Wisconsin.
St. Marys River, Michigan: An Ecological Profile.
Statement of Concerns and Suggested Ecological Research.
Steady state modeling program : application manual /
Stream Productivity Analysis with DORM (Dissolved Oxygen Routing Model) - 1: Development of Computational Model.
Stream Productivity Analysis with DORM (Dissolved Oxygen Routing Model) - 2: Parameter Estimation and Sensitivity.
Stream Productivity Analysis with DORM (Dissolved Oxygen Routing Model) - 3: Productivity of Experimental Streams.
Streamside Effect in a 'Carex lyngbyei' Estuarine Marsh: The Possible Role of Recoverable Underground Reserves.
Structural and Functional Aspects of the Ecology of Submerged Aquatic Macrophyte Communities in the Lower Chesapeake Bay. Volume 1. Studies on Structure and Function of a Temperate, Estuarine Seagrass Community: Vaucluse Shores, Lower Chesapeake Bay, Virginia, USA.
Structural and Functional Aspects of the Ecology of Submerged Aquatic Macrophyte Communities in the Lower Chesapeake Bay. Volume 2: Submarine Light Quantity and Quality in the Lower Chesapeake Bay and Its Potential Role in the Ecology of Submerged Seagrass Communities.
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