NDLI: Discrete versus continuous analysis of anatomical and δ13C variability in tree rings with intra-annual density fluctuations

Content Provider	Springer Nature Link
Author	Micco, Veronica Battipaglia, Giovanna Brand, Willi A. Linke, Petra Saurer, Matthias Aronne, Giovanna Cherubini, Paolo
Copyright Year	2011
Abstract	Intra-annual density fluctuations (IADFs) are anomalies of tree rings where wood density is abruptly altered after sudden changes in environmental conditions. Their characterisation can provide information about the relationship between environmental factors and eco-physiological processes during tree growth. This paper reports about the variability of anatomical traits and stable carbon isotopic composition along tree rings as resulting from the application of two different methodological approaches: (a) the separation of each ring into different regions (earlywood, latewood and IADF) and the comparison of anatomical and isotopic parameters measured in those specific sectors and (b) the analysis of such features in continuum along ring width. Moreover, different parameters of vessels (i.e. ecd—equivalent circle diameter, elongation, sphericity and convexity of vessel lumen) were considered to identify those more appropriate for the representation of intra-annual anatomical variations. The analysis was conducted on Arbutus unedo L. growing on the Elba Island (Italy); tree rings of this species form IADFs with features clearly responsive to the environmental conditions experienced during plant growth. Results showed that the first approach, although more suitable to obtain data for subsequent statistical comparisons and for the calculation of correlations with environmental parameters, suffers from elements of subjectivity due to the size and position of the selected tree-ring regions. The in continuum method allows a clearer identification of the variation of tree-ring properties along ring width. Regarding anatomical parameters, shape indexes were not suitable indicators of intra-annual variability. The overall analysis suggested that using both methodologies in synergy helps to gain complete information and avoid misleading interpretations of IADFs in tree rings.
Starting Page	513
Ending Page	524
Page Count	12
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	26
Issue Number	2
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-09-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arbutus unedo L. Carbon isotopes Elba island Intra-annual density fluctuations (IADFs) Mediterranean ecosystems Quantitative wood anatomy Plant Pathology Plant Anatomy/Development Plant Physiology Plant Sciences Agriculture Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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