Anatomy of Pinus mugo var. mugo as a fundament for annual-ring-based dating of debris flows in the alpine zone

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F22%3A50019437" target="_blank" >RIV/62690094:18470/22:50019437 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0341816222004908" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0341816222004908</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.catena.2022.106504" target="_blank" >10.1016/j.catena.2022.106504</a>

Result language

angličtina

Original language name

Anatomy of Pinus mugo var. mugo as a fundament for annual-ring-based dating of debris flows in the alpine zone

Original language description

Dendrogemorphic methods are a very accurate tool for dating past debris flows. Chronological data are very valuable, especially in the alpine zone, because climate change has a very intense impact on the frequency of debris flows here. However, at the same time, the applicability of dendrogeomorphic methods in this environment is limited by the lack of suitable trees. Shrub-like mountain pine (Pinus mugo var. mugo) is often the only tree species in this environment, however, dating using a classical macroscopic approach including the analysis of annual-ring series is frequently challenging due to difficulties with detection of increment growth disturbances. Thus, this study focuses on the possibility of detecting growth responses of P. mugo to debris flow exposure at the anatomical level.A total of 14 P. mugo specimens were sampled using discs through stem scars. Anatomical analysis was performed on microsections realized in two radial segments on each stem disc (one as a control). In each segment, five consecutive annual rings (two before damage, one damaged and two after damage) were analyzed each divided into early and late wood zones. The results showed a significant reduction in tracheid parameters (crosssectional area, radial width, and tangential width) in the early wood zone. Another significant anatomical response was found as an increase in the number of radial rays. Possible effects of scar size and shrub age on the intensity of the anatomical response are also discussed. Thus, this study demonstrated the potential applications of anatomical analyses of P. mugo and suggested new possibilities for dating debris flows within the limit zone of applicability of dendrogeomorphological methods.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10508 - Physical geography

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Catena

ISSN

0341-8162

e-ISSN

1872-6887

Volume of the periodical

217

Issue of the periodical within the volume

říjen

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

"Article Number: 106504"

UT code for WoS article

000850861800002

EID of the result in the Scopus database

2-s2.0-85133270913