Fitting and Calibrating a Multilevel Mixed-Effects Stem Taper Model for Maritime Pine in NW Spain.
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ABSTRACT:
SUBMITTER: Arias-Rodil M
PROVIDER: S-EPMC4668033 | biostudies-literature | 2015
REPOSITORIES: biostudies-literature
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Fitting and Calibrating a Multilevel Mixed-Effects Stem Taper Model for Maritime Pine in NW Spain.
Arias-Rodil Manuel M Castedo-Dorado Fernando F Cámara-Obregón Asunción A Diéguez-Aranda Ulises U
PloS one 20151202 12
Stem taper data are usually hierarchical (several measurements per tree, and several trees per plot), making application of a multilevel mixed-effects modelling approach essential. However, correlation between trees in the same plot/stand has often been ignored in previous studies. Fitting and calibration of a variable-exponent stem taper function were conducted using data from 420 trees felled in even-aged maritime pine (Pinus pinaster Ait.) stands in NW Spain. In the fitting step, the tree lev ...[more]
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