NDLI: Which matters most for the formation of intra-annual density fluctuations in Pinus pinaster: age or size?

Content Provider	Springer Nature Link
Author	Campelo, Filipe Vieira, Joana Battipaglia, Giovanna Luis, Martin Nabais, Cristina Freitas, Helena Cherubini, Paolo
Copyright Year	2014
Abstract	A new method is pro posed to standardize chronologies of intra-annual density fluctuations to improve their intra-annual climatic signal. In the Mediterranean area, intra-annual density fluctuations (IADFs) are triggered by short-term climatic variations during the growing season. It is known that the formation of these anatomical structures is dependent on age and size, which can represent a problem during the extraction of the environmental signal from IADF chronologies. We present a new method using a two-step approach to remove the effect of tree-ring width from IADF chronologies. The climatic signal of IADF chronologies obtained by the proposed method was compared with previous methods, using 160 Pinus pinaster tree cores from an even-aged stand on the west coast of Portugal. Our results show that the climatic signal of IADF chronologies was strongly affected by the standardization method used, and that it could be improved by removing the effect of the predisposing factors (cambial age and tree-ring width) on IADF formation. Moreover, additional climatic information (previous winter precipitation) was only revealed when the effect of tree-ring width was removed from IADF series. Finally, we propose that this new method should be tested for other species and across larger geographical areas to confirm its capacity to remove noise from IADF chronologies and to improve their intra-annual climatic signal.
Starting Page	237
Ending Page	245
Page Count	9
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	29
Issue Number	1
e-ISSN	14322285
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-31
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecological wood anatomy Intra-annual density fluctuation Maritime pine Mediterranean climate Standardization Forestry Plant Sciences Agriculture Plant Anatomy/Development Plant Pathology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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