Seasonal variation of delta O-18 and delta H-2 in leaf water of Fagus sylvatica L. and related water compartments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F18%3A50015344" target="_blank" >RIV/62690094:18470/18:50015344 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60077344:_____/18:00495084 RIV/60076658:12310/18:43897539

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jplph.2018.03.009" target="_blank" >http://dx.doi.org/10.1016/j.jplph.2018.03.009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jplph.2018.03.009" target="_blank" >10.1016/j.jplph.2018.03.009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Seasonal variation of delta O-18 and delta H-2 in leaf water of Fagus sylvatica L. and related water compartments

Popis výsledku v původním jazyce

The study aims to assess variability in leaf water isotopic enrichment occurring in the field under natural conditions. We focused on seasonal variation and difference between sun-exposed and shaded leaves. Isotopic composition (delta O-18, delta H-2) of leaf water was monitored in a beech tree (Fagus sylvatica L.) growing in the forest-meadow ecotone together with delta O-18 (H-2) of water compartments which are in close relation to this signal, namely twig and soil water. The sampling was carried out in approximately two-week intervals during five consecutive vegetation seasons. The delta O-18 (H-2) data showed a distinct seasonal pattern and a consistency in relative differences between the seasons and sample categories. Leaf water was the most isotopically enriched water compartment. The leaf water enrichment decreased toward the autumn reflecting the change in delta O-18 (H-2) of source water and evaporative demands. The soil and twig water isotopic signal was depleted against current precipitation as it partly retained the isotopic signature from winter precipitation however the seasonal pattern of soil and twig water followed that of precipitation. No significant differences between sun-exposed and shaded samples were detected. Nevertheless, the observed strong seasonal pattern of isotope composition of leaf, twig and soil water should be taken into account when using leaf water enrichment for further calculations or modeling.

Název v anglickém jazyce

Seasonal variation of delta O-18 and delta H-2 in leaf water of Fagus sylvatica L. and related water compartments

Popis výsledku anglicky

The study aims to assess variability in leaf water isotopic enrichment occurring in the field under natural conditions. We focused on seasonal variation and difference between sun-exposed and shaded leaves. Isotopic composition (delta O-18, delta H-2) of leaf water was monitored in a beech tree (Fagus sylvatica L.) growing in the forest-meadow ecotone together with delta O-18 (H-2) of water compartments which are in close relation to this signal, namely twig and soil water. The sampling was carried out in approximately two-week intervals during five consecutive vegetation seasons. The delta O-18 (H-2) data showed a distinct seasonal pattern and a consistency in relative differences between the seasons and sample categories. Leaf water was the most isotopically enriched water compartment. The leaf water enrichment decreased toward the autumn reflecting the change in delta O-18 (H-2) of source water and evaporative demands. The soil and twig water isotopic signal was depleted against current precipitation as it partly retained the isotopic signature from winter precipitation however the seasonal pattern of soil and twig water followed that of precipitation. No significant differences between sun-exposed and shaded samples were detected. Nevertheless, the observed strong seasonal pattern of isotope composition of leaf, twig and soil water should be taken into account when using leaf water enrichment for further calculations or modeling.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of plant physiology

ISSN

0176-1617

e-ISSN

—

Svazek periodika

227

Číslo periodika v rámci svazku

AUGUST

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

56-65

Kód UT WoS článku

000439100400006

EID výsledku v databázi Scopus

2-s2.0-85044503439