Chronology of hydraulic vulnerability in trunk wood of conifer trees with and without symptoms of top dieback

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F16%3A43908334" target="_blank" >RIV/62156489:43410/16:43908334 - isvavai.cz</a>

Výsledek na webu

<a href="https://hal.archives-ouvertes.fr/hal-01256362/document" target="_blank" >https://hal.archives-ouvertes.fr/hal-01256362/document</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Chronology of hydraulic vulnerability in trunk wood of conifer trees with and without symptoms of top dieback

Popis výsledku v původním jazyce

There is evidence that recently occurring top dieback of Norway spruce (Picea abies (L.) Karst.) trees in southern Norway is associated with drought stress. We compared functional wood traits of 20 healthy looking trees and 20 trees with visual signs of top dieback. SilviScan technology was applied to measure cell dimensions (lumen and cell wall thickness) in a selected set of trunk wood specimens where vulnerability to cavitation (P50) data were available. The conduit wall reinforcement ((t/b)2) was a good proxy for P50. Cell dimensions were measured on wood cores of all 40 trees; theoretical vulnerability of single annual rings could be thus estimated. Declining trees tended to have lower (t/b)2 before and during a period of water deficit (difference between precipitation and potential evapotranspiration) that lasted from 2004 to 2006. The results are discussed with respect to genetic predisposition.

Název v anglickém jazyce

Chronology of hydraulic vulnerability in trunk wood of conifer trees with and without symptoms of top dieback

Popis výsledku anglicky

There is evidence that recently occurring top dieback of Norway spruce (Picea abies (L.) Karst.) trees in southern Norway is associated with drought stress. We compared functional wood traits of 20 healthy looking trees and 20 trees with visual signs of top dieback. SilviScan technology was applied to measure cell dimensions (lumen and cell wall thickness) in a selected set of trunk wood specimens where vulnerability to cavitation (P50) data were available. The conduit wall reinforcement ((t/b)2) was a good proxy for P50. Cell dimensions were measured on wood cores of all 40 trees; theoretical vulnerability of single annual rings could be thus estimated. Declining trees tended to have lower (t/b)2 before and during a period of water deficit (difference between precipitation and potential evapotranspiration) that lasted from 2004 to 2006. The results are discussed with respect to genetic predisposition.

Druh

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

CEP obor

GK - Lesnictví

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Plant Hydraulics

ISSN

2426-413X

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

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EID výsledku v databázi Scopus

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