Sap flux - a real time assessment of health status in Norway spruce

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F16%3A43908332" target="_blank" >RIV/62156489:43410/16:43908332 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/02827581.2015.1130851" target="_blank" >http://dx.doi.org/10.1080/02827581.2015.1130851</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/02827581.2015.1130851" target="_blank" >10.1080/02827581.2015.1130851</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sap flux - a real time assessment of health status in Norway spruce

Popis výsledku v původním jazyce

Top dieback of Norway spruce (Picea abies), triggered by drought in 2004-2006, has been observed in Southeast Norway and trees died within four years after appearance of the first symptoms. The aim of our study was to use sap flux measurements as a diagnostic method for assessment of tree vitality. We used the heat field deformation method to monitor the sap flux density (SFD) in four pairs of healthy and declining trees in situ. To provide retrospective information on hydraulic performance of the trees we took samples for wood anatomical analysis. After felling the trees we used the modified differential translucence method (MDT) as a proxy for the SFD measurements. Healthy trees had three times higher SFD values as declining trees. In some healthy trees we detected decreasing SFD with time. The MDT method agreed with the SFD measurements. In conclusion, we detected sap flux dysfunction in declining trees and showed that the SFD reduction may occur during a short period, prior to occurrence of any visual symptoms. We suggest incorporating the SFD measurements into the repertoire of diagnostic tools in forest pathology.

Název v anglickém jazyce

Sap flux - a real time assessment of health status in Norway spruce

Popis výsledku anglicky

Top dieback of Norway spruce (Picea abies), triggered by drought in 2004-2006, has been observed in Southeast Norway and trees died within four years after appearance of the first symptoms. The aim of our study was to use sap flux measurements as a diagnostic method for assessment of tree vitality. We used the heat field deformation method to monitor the sap flux density (SFD) in four pairs of healthy and declining trees in situ. To provide retrospective information on hydraulic performance of the trees we took samples for wood anatomical analysis. After felling the trees we used the modified differential translucence method (MDT) as a proxy for the SFD measurements. Healthy trees had three times higher SFD values as declining trees. In some healthy trees we detected decreasing SFD with time. The MDT method agreed with the SFD measurements. In conclusion, we detected sap flux dysfunction in declining trees and showed that the SFD reduction may occur during a short period, prior to occurrence of any visual symptoms. We suggest incorporating the SFD measurements into the repertoire of diagnostic tools in forest pathology.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GK - Lesnictví

OECD FORD obor

—

Projekt

<a href="/cs/project/EE2.3.20.0265" target="_blank" >EE2.3.20.0265: Indikátory vitality dřevin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Scandinavian Journal of Forest Research

ISSN

0282-7581

e-ISSN

—

Svazek periodika

31

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

SE - Švédské království

Počet stran výsledku

8

Strana od-do

450-457

Kód UT WoS článku

000378019400002

EID výsledku v databázi Scopus

2-s2.0-84954472435