Search Results for the EPA National Library Catalog

Items Found: 449

Showing: Items 401 - 449

Your Search: (SUBJECT=Biological productivity)

 
 
 

PREV 1 2 3 4 5 6 7 8 9
Select Item Title Year Published
Structure and Function of Copper-Stressed Aquatic Microcosms. 1984
Studies of circulation and primary production in deep inlet environments / 1977
Studies on lake restoration by phosphorus inactivation / 1976
Study of Phytoplankton Dynamics in Lake Fayetteville as a Means of Assessing Water Quality. 1971
Summary analysis of the North American (US portion) OECD eutrophication project : nutrient loading--lake response relationships and trophic state indices / 1978
Summer Internal Phosphorus Supplies in Shagawa Lake, Minnesota. 1981
Survey of Lake Rehabilitation Techniques and Experiences. 1974
Swan Lake, Columbia County, Wisconsin. 1974
Swan Lake, Itasca County, Minnesota. 1974
Swan Lake, Sullivan County, New York. 1974
Systems Simulation of the Effects of Tertiary Treatment for Carbon, Nitrogen, and Phosphorus Removal Upon Primary Productivity, Standing Crop and Community Structure of Autotrophic and Metertrophic Communities in Receiv ing Model Streams. 1973
Tainter Lake, Dunn County, Wisconsin. 1974
Technical Analysis of Response of Chesapeake Bay Water Quality Model to Loading Scenarios (A Report of the Modeling Subcommittee Chesapeake Bay Program Office, Annapolis, MD). 1994
Temperature. 1971
The dynamics of an estuary as a natural ecosystem / 1977
The Dynamics of an estuary as a natural ecosystem, II / 1978
The production ecology of wetlands : the IBP synthesis / 2009
The role of trace elements in management of nuisance growths, 1975
The Selenastrum capricornutum printz algal assay bottle test : experimental design, application, and data interpretation protocol / 1978
The Trophic cascade in lakes / 1993
Thermal Effects on Biological Production in a Pond. 1973
Towline Lake, Oneida County, Wisconsin. 1974
Trace element research using coniferous forest soil/litter microcosms / 1977
Trace Lake, Todd County, Minnesota. 1974
Trout Lake, Itasca County, Minnesota. 1974
Trout Lake, Vilas County, Wisconsin. 1975
Tundra biome : proceedings / 1972
Turner Reservoir and Central Pond, Providence County, Rhode Island, and Bristol County, Massachusetts. 1974
Wagonga Lake, Kandiyohi County, Minnesota. 1974
Wallmark (Mud) Lake, Chisago County, Minnesota. 1975
Wapogasset Lake, Polk County, Wisconsin. 1974
Wastewater treatment by natural and artificial marshes / 1976
Water Pollution Investigation: Detroit and St. Clair Rivers. 1974
Water Pollution Investigation: Genesee River and Rochester Area. 1975
Water Quality in Agricultural Watersheds: Impact of Riparian Vegetation during Base Flow. 1981
Water Resources Research in Virginia. 1969-1971. 1972
Waterbury Reservoir Washington and Lamoille Counties Vermont. 1974
Waterford Inpoundment-Tichigan Lake, Racine County, Wisconsin. 1974
Watershed and point source enrichment and lake trophic state index / 1979
Weed Harvest and Lake Nutrient Dynamics. 1973
Weiser-Lower Payette water quality surveys ... August 1975 and December 1975 1976
What are the Effects of UV-B Radiation on Marine Organisms. 1988
What controls phytoplankton production in nutrient-rich areas of the open sea? / 1991
White Bear Lake, Ramsey and Washington Counties, Minnesota. 1974
Willow Reservoir, Oneida County, Wisconsin. 1974
Winter Field Use of CO2 Freezing to Obtain Core Samples of Stream Sediments. 1974
Wolf Lake, Beltrami and Hubbard Counties, Minnesota. 1974
Yellow Lake, Burnett County, Wisconsin. 1975
Zooplankton grazing and population dynamics relative to water quality in southern Lake Huron / 1980
PREV 1 2 3 4 5 6 7 8 9

Save, Print or Email Selected Records