Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Site Selection Procedures for Temporally Integrated Monitoring of Ecosystems (Time).
Author Young, T. C. ; Ford, J. ;
CORP Author National Research Council, Washington, DC. ;National Council for Air and Stream Improvement, Corvallis, OR.;Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div.
Publisher Sep 89
Year Published 1989
Report Number EPA/600/D-89/226;
Stock Number PB90-134339
Additional Subjects Acidification ; Ecology ; Lakes ; Water pollution ; Monitoring ; Sites ; Atmospheric composition ; Watersheds ; Periodic variations ; Surface waters ;
Library Call Number Additional Info Location Last
NTIS  PB90-134339 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/15/1990
Collation 23p
A long-term program to monitor aquatic ecosystems requires a long-term commitment of significant resources. To maximize the effectiveness of such a program, monitoring sites must be carefully selected, addressing a complex array of relevant concerns in the process. Monitoring sites for the TIME Project (Temporally Integrated Monitoring of Ecosystems), scheduled to begin in 1991, will be selected for chemical and biological sampling in order to meet several distinct objectives including (1) establishing an 'early warning' network to detect changes in aquatic resource acidification or recovery, (2) providing periodic regional assessments of surface water acidification status, (3) providing data for validation of watershed models, and (4) relating surface water responses to atmospheric deposition. The paper focuses on a method for selecting sites to meet the first objective for lakes. The approach involves a cluster analysis to stratify the NSWS sample and ordination to identify lakes that are likely to respond to changes in acid inputs.