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OLS Field Name OLS Field Data
Main Title Comparing Sampling Designs for Monitoring Ecological Status and Trends: Impact of Temporal Patterns (Chapter 3).
Author Urquhart, N. S. ; Overton, W. S. ; Birkes, D. S. ;
CORP Author Oregon State Univ., Corvallis.;Corvallis Environmental Research Lab., OR.
Publisher c1993
Year Published 1993
Report Number EPA/600/A-93/196;
Stock Number PB93-222289
Additional Subjects Environmental monitoring ; Biological indicators ; Statistical analysis ; Sampling ; Design criteria ; Environmental surveys ; Ecology ; Environment pollution ; Long term effects ; Reprints ; Status and trends
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB93-222289 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/22/1993
Collation 18p
Abstract The paper presents a comparison of two classes of sampling designs suggested for long-term environmental monitoring. One class is based on a rotating panel design that prescribes visiting a panel of sites for several consecutive years with partial replacement of sites each year; the other class is based on a serially alternating design which prescribes returning to sampling sites every four years. A random effects linear model is used to investigate and compare the proposed sampling designs because the sites to be visited and the years of visits may manifest substantial random contributions. The class of designs based on the serially alternating design lead to more precise estimates of current status and of trends in the ecological resource when the site components of variance is substantially greater than the year component and/or when the sample sizes are smaller.
Supplementary Notes Pub. in Statistics for the Environment, Chapter 3, p71-85 1993. See also PB92-103449. Sponsored by Corvallis Environmental Research Lab., OR.
NTIS Title Notes Book chapter.
Title Annotations Reprint: Comparing Sampling Designs for Monitoring Ecological Status and Trends: Impact of Temporal Patterns (Chapter 3).
Category Codes 68; 57H
NTIS Prices PC A03/MF A01
Primary Description 600/02
Document Type NT
Cataloging Source NTIS/MT
Control Number 328019638
Origin NTIS
Type CAT