Age, climate and intra-annual density fluctuations in Pinus halepensis in Spain

Klemen Novak (Author), Miguel Angel Saz (Author), Katarina Čufar (Author), Jose Raventós Bonvehi (Author), Martin De Luis (Author)

Abstract

Intra-annual density fluctuations (IADFs) in tree rings of Aleppo pine (Pinus halepensis) are considered to be among the most promising wood anatomical features in dendrochronological studies. They provide environmental information in addition to those obtained from tree-ring widths. We used a network of 35 sites in Spain, ranging from nearly desert to temperate climate. We analysed tree-ring series of 529 trees to study IADF frequencies, and their dependence on climatic factors and cambial age. The results showed that IADF frequency is age dependent, with its maximum at the cambial age of 27 years (evaluated at breast height). The frequencies varied across the network and at different sites we recorded that 0.3% to 33% of the analysed tree rings contained IADFs. They were more frequent where and when the temperatures were higher, summer drought was intense and autumn was the main precipitation season. IADF formation was particularly related to high minimum temperatures and wet conditions in late summer and autumn. These results suggest that IADF formation is not related to stressful conditions during summer but to favourable conditions during autumn. These conditions promote cambial reactivation and consequently formation of wider tree rings.

Keywords

alepski bor;struktura lesa;branike;

Data

Language:	English
Year of publishing:	2013
Typology:	1.01 - Original Scientific Article
Organization:	UL BF - Biotechnical Faculty
Publisher:	Rijksherbarium/Hortus botanicus
UDC:	630*1
COBISS:	2159241
ISSN:	0928-1541
Views:	962
Downloads:	648
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Unknown
File type:	application/pdf
Type (COBISS):	Not categorized
Pages:	str. 459-474
Volume:	ǂVol. ǂ34
Issue:	ǂno. ǂ4
Chronology:	2013
DOI:	10.1163/22941932-00000037
ID:	8631613