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RECORD NUMBER: 250 OF 713

OLS Field Name OLS Field Data
Main Title Ecoregional Biological Criteria.
Author Hughes, R. M. ;
CORP Author NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
Publisher 1989
Year Published 1989
Report Number EPA-68-C8-0006; EPA/600/D-89/167;
Stock Number PB90-116609
Additional Subjects Aquatic biology ; Environmental monitoring ; Criteria ; Measurement ; Numerical analysis ; Assessments ; Toxicology ; Aquatic animals ; Regions ; Aquatic ecosystems ; Water pollution effects(Animals) ; Oil spills
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB90-116609 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/10/1990
Collation 8p
Abstract For the purposes of the paper, biocriteria are defined as numerical values that describe the biological health of aquatic communities for a designated aquatic life use. Regardless of whether they are implemented regionally or site specifically, biocriteria (ambient, community-based) have the following advantages compared to chemical and toxicological criteria: biocriteria facilitate direct assessment of designated aquatic life uses, are applicable to a wide range of stressors (physical, chemical, biological, point, nonpoint, toxic, nontoxic), and provide a firm basis for regulating nonchemical degradation and antidegradation. They offer a mechanism for evaluating long-term effects of spills, process changes, and illegal dumping; for assessing cumulative effects of multiple dischargers and stressors; and for estimating bioaccumulation and indirect effects (food chain, competition, predation, migration, life history).
Supplementary Notes Proceedings of an EPA conference, Water Quality Standards for the 21st Century, p147-151 Mar 89. Sponsored by Corvallis Environmental Research Lab., OR.
Category Codes 47D; 57H
NTIS Prices PC A02/MF A01
Primary Description 600/02
Document Type NT
Cataloging Source NTIS/MT
Control Number 935222615
Origin NTIS
Type CAT