Age estimation of juvenile stages of Dracaena cinnabari Balf. F., the last stone in the mosaic of knowing its lifespan

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43918001" target="_blank" >RIV/62156489:43410/20:43918001 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s12210-020-00921-x" target="_blank" >https://doi.org/10.1007/s12210-020-00921-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12210-020-00921-x" target="_blank" >10.1007/s12210-020-00921-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Age estimation of juvenile stages of Dracaena cinnabari Balf. F., the last stone in the mosaic of knowing its lifespan

Popis výsledku v původním jazyce

This article presents the methodological approach of age estimation of juvenile Socotra dragon&apos;s blood trees (Dracaena cinnabari Balf. F., DBT) for the first time. To date, only the model for the age estimation of the tree crown after the first flowering event has been published. The DBTs were measured on Socotra Island (Yemen), on the Firmihin Plateau. A set of three indirect growth models was used for the estimation of the juvenile phase duration. The first model shows the relationship between the proportion of stem cavities and diameter at breast height (DBH). The second model describes the relationship between the DBH and stem height of juvenile trees. The third model expresses the radial stem increment with an increasing number of branch orders. The first model estimates the ratio of the stem cavity and secondary vascular tissue. The second model serves to retrospectively estimate the DBH of the tree at the time of the first flowering event according to the height of the stem. Extrapolation of the third model enabled us to estimate the duration of the juvenile phase that corresponds to the thickness of the secondary vascular tissue. A non-destructive methodology for juvenile DBT age estimation was devel-oped, although the calculated absolute values are not precise. The same approach can also be used for the other arborescent dragon tree species. The validity of our assumption should be verified by repeated measurements on trees from different age groups. And thus, more precise model with less uncertainty about the parameter estimates could be obtained in the future.

Název v anglickém jazyce

Age estimation of juvenile stages of Dracaena cinnabari Balf. F., the last stone in the mosaic of knowing its lifespan

Popis výsledku anglicky

This article presents the methodological approach of age estimation of juvenile Socotra dragon&apos;s blood trees (Dracaena cinnabari Balf. F., DBT) for the first time. To date, only the model for the age estimation of the tree crown after the first flowering event has been published. The DBTs were measured on Socotra Island (Yemen), on the Firmihin Plateau. A set of three indirect growth models was used for the estimation of the juvenile phase duration. The first model shows the relationship between the proportion of stem cavities and diameter at breast height (DBH). The second model describes the relationship between the DBH and stem height of juvenile trees. The third model expresses the radial stem increment with an increasing number of branch orders. The first model estimates the ratio of the stem cavity and secondary vascular tissue. The second model serves to retrospectively estimate the DBH of the tree at the time of the first flowering event according to the height of the stem. Extrapolation of the third model enabled us to estimate the duration of the juvenile phase that corresponds to the thickness of the secondary vascular tissue. A non-destructive methodology for juvenile DBT age estimation was devel-oped, although the calculated absolute values are not precise. The same approach can also be used for the other arborescent dragon tree species. The validity of our assumption should be verified by repeated measurements on trees from different age groups. And thus, more precise model with less uncertainty about the parameter estimates could be obtained in the future.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40102 - Forestry

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Rendiconti Lincei. Scienze Fisiche e Naturali

ISSN

2037-4631

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

10

Strana od-do

677-686

Kód UT WoS článku

000541062000001

EID výsledku v databázi Scopus

2-s2.0-85087053828