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RECORD NUMBER: 30 OF 36

OLS Field Name OLS Field Data
Main Title Some Novel Statistical Analyses Relevant to the Reported Growth Decline of Pine Species in the Southeast.
Author Warren, W. G. ;
CORP Author Corvallis Environmental Research Lab., OR.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/404;
Stock Number PB91-171603
Additional Subjects Pine trees ; Statistical analysis ; Plant growth ; Growth rate ; Forests ; Study estimates ; Graphs(Charts) ; Mathematical models ; Air pollution effects(Plants) ; Deposition ; Data processing ; Species diversity ; Baseline ecology ; Reprints ; Southeast Region(United States)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB91-171603 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 18p
Abstract
Existing statistical methodology has been adapted to give additional insight into the data on pine-growth reduction in the Southeast as presented by Sheffield et al. (1985). Specifically the generation of confidence intervals for the percentage growth reduction is illustrated. The probability integral transformation and cumulative sum techniques are employed as a meta-analytic approach to testing the significance of the growth reduction. While these methods are suggested as a means of obtaining a quantitative overview of these particular data, the potential for wider application exists. It is also shown how the observed pattern of reduction and most, if not all, of its magnitude can be explained by a simple conceptual model for hardwood competition. Verification of the approach is, however, not possible with the data as provided by Sheffield et al. (Copyright (c) 1990 by the Society of American Foresters.)