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Rotation Measures of Extragalactic Sources Behind the Southern Galactic Plane: New Insights into the Large-scale Magnetic Field of the Inner Milky Way

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Brown, JC and Haverkorn, M and Gaensler, BM and Taylor, AR and Bizunok, NS and McClure-Griffiths, NM and Dickey, JM and Green, AJ (2007) Rotation Measures of Extragalactic Sources Behind the Southern Galactic Plane: New Insights into the Large-scale Magnetic Field of the Inner Milky Way. The Astrophysical Journal, 663 (1). pp. 258-266. ISSN 0004-637X

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Abstract

Wood discs were sampled from 6 heights up the stem of 248 trees representing 10 subraces and 116 families grown in an E. globulus
base-population progeny trial. The lower stem had the least favourable wood properties for kraft pulpwood and most solidwood applications: bark was
thickest, basic density was lowest and kino, decay and shrinkage traits were greatest at or below 12% of tree height. Significant genetic differences at
the subrace level were revealed in diameter, bark thickness, basic density, decay and gross shrinkage and at the family within subrace level in diameter,
basic density and decay. However, subrace-by-height-category interactions in bark thickness, basic density, decay and gross shrinkage indicated that
differences among subraces were dependent on height in these traits. Examination of longitudinal trends revealed some evidence that the zone of thick
basal bark extended further up the stem in thicker-barked subraces and that the Southern Tasmania subrace might be less effective than other subraces
in restricting the longitudinal spread of decay after infection.

Item Type: Article
Keywords: wood properties / Eucalyptus globulus / longitudinal variation / within-tree variation / genetic variation
Journal or Publication Title: The Astrophysical Journal
Publisher: University of Chicago Press
Page Range: pp. 258-266
ISSN: 0004-637X
Identification Number - DOI: 10.1051/forest:2007064
Date Deposited: 07 Apr 2008 14:44
Last Modified: 18 Nov 2014 03:36
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