Search Results for the EPA National Library Catalog

Items Found: 1988
Showing: Items 1701 - 1750
Your Search: (SUBJECT=Ecosystems)


 
 
 
PREV 1 ... 29 30 31 32 33 34 35 36 37 38 39 40 NEXT
Select Item Title Year Published
Statistical Analysis of the Extensive Component of the Maryland Department of the Environment Stream Acidification Monitoring Program. 1996
Statistical Analysis of the Tampa Bay National Estuary Program 1993 Benthic Survey. 1996
Statistical Approach to Predicting Chronic Toxicity of Chemicals to Fishes from Acute Toxicity Test Data (for Microcomputers). 1992
Statistical Evaluation of the EMAP-Wetlands Classification. 1993
Status and Trends of Selected Living Resources in the Galveston Bay System. 1992
Status of development of water quality criteria and advisories / 1989
Status of efforts to control aquatic debris / 1994
Status of Research to Develop Acidic Dry Deposition Monitoring Capability. 1983
Status of Restoration Science: Wetlands Ecosystems. 1993
Status of the Sierra Nevada summary of the Sierra Nevada Ecosystem Project report. 1996
Stony coral rapid bioassessment protocol / 2007
Strategic Management of Marine Ecosystems Proceedings of the NATO Advanced Study Institute on Strategic Management of Marine Ecosystems Nice, France 1-11 October 2003 / [electronic resource] : 2005
Strategies for Assessing the Cumulative Effects of Wetland Alteration on Water Quality. 1988
Strategy for Protecting and Restoring the Chesapeake Bay Watershed. Executive Order 13508. 2010
Strategy for Protecting and Restoring the Chesapeake Bay Watershed. Executive Order 13508. Executive Summary. 2010
Stratospheric ozone depletion : a focus on EPA's research / 1995
Stream Ecology Structure and function of running waters / [electronic resource] : 2007
Stream Indicator and Design Workshop / 1993
Stream Indicator and Design Workshop / 1993
Stressor Identification (SI) at Contaminated Sites: Upper Arkansas River, Colorado. 2011
Stressor identification guidance document. 2000
Structural properties for determining mechanisms of toxic action / 1989
Studies on the Effect of Forest Insect Control with Ethylene Dibromide on Water Quality. 1963
Study on Integrating Surveys of Terrestrial Natural Resources: The Oregon Demonstration Project. 1998
Submerged Aquatic Vegetation Distribution in Tributaries of Tampa Bay. 1995
Submerged Aquatic Vegetation in the Albemarle-Pamlico Estuarine System. 1989
Substitute chemical program, the first year of progress : proceedings of a symposium / 1975
Sulfur Dynamics in Mineral Horizons of Two Northern Hardwood Soils. A Column Study with (35)S. 1990
Sulfur Dynamics of Forest Ecosystems. 1989
Summary of biological assessment programs and biocriteria development for states, tribes, territories, and interstate commissions : streams and wadeable rivers / 2002
Summary of fish habitat/water quality since the Silver fire of 1987 / 1996
Summary Report of the Atmospheric Modeling and Analysis Division's Research Activities for 2009. 2010
Summary Report of the Atmospheric Modeling and Analysis Division's Research Activities for 2010. 2011
Summary report on issues in ecological risk assessment / 1991
Superfund Chemical Data Matrix (SCDM) - Database Manager (Read-Only Version) (for Microcomputers). 1997
Superfund chemical data matrix. 1996
Surface Waters Component of the Environmental Monitoring and Assessment Program (EMAP): An Overview. 1992
Surveillance and analysis: A summary of the water quality data record for South Puget Sound 1934 to 1967 / 1975
Surveillance Issue: Contaminants 1985
Survey of Interstate Pollution of the Bear River and Tributaries, Idaho-Utah, 1972. 1963
Survey of the toxicity and chemical composition of used drilling muds 1984
Survival and Effects of Wild-Type, Mutant, and Recombinant 'Streptomyces' in a Soil Ecosystem. 1989
Survival and Recovery of Microorganisms from Environmental Samples. 1989
Survival of Brook Trout Embryos in Three Episodically Acidified Streams. 1993
Survival of Genetically Engineered Microbes in the Environment: Effect of Host/Vector Relationship. 1988
Survival of the Fattest: Implications for Acute Effects of Lipophilic Chemicals on Aquatic Populations. 1990
Survival, Blood Osmolality, and Gill Morphology of Juvenile Yellow Perch, Rock Bass, Black Crappie, and Largemouth Bass Exposed to Acidified Soft Water. 1989
Suspension Feeders: A Workshop to Assess What We Know, Don't Know, and Need to Know to Determine Their Effects on Water Quality. Held in Hanover, Maryland on March 18-19, 2002. 2002
Sustainability and Diversity of Forest Ecosystems An Interdisciplinary Approach / [electronic resource] : 2007
Sustainable Agriculture [electronic resource] / 2009
PREV 1 ... 29 30 31 32 33 34 35 36 37 38 39 40 NEXT

Save, Print or Email Selected Records