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Seasonal and altitudinal variation of ericoid shrub freezing resistance in temperate bogs

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10337348" target="_blank" >RIV/00216208:11310/16:10337348 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/67985939:_____/16:00503116 RIV/61389030:_____/16:00503116

  • Výsledek na webu

    <a href="http://www.npsumava.cz/gallery/34/10345-sg_22_daneketal.pdf" target="_blank" >http://www.npsumava.cz/gallery/34/10345-sg_22_daneketal.pdf</a>

  • DOI - Digital Object Identifier

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Seasonal and altitudinal variation of ericoid shrub freezing resistance in temperate bogs

  • Popis výsledku v původním jazyce

    Changes in freezing resistance and its mechanisms (i.e., avoidance by supercooling or tolerance of ice formation) were studied in two deciduous (Vaccinium myrtillus, V. uliginosum) and two evergreen (V. vitis-idaea, Oxycoccus palustris) ericoid shrubs at two elevations (470 m and 1070 m a.s.l.) throughout the growing season. The temperature causing 50% damage (i.e. Lt50) and nucleation temperature at which ice was formed in the tissues (i.e. exotherm) were measured. The aim was to investigate whether the freezing resistance varied during the growing season and whether the changes were determined by elevation. Freezing resistance declined from the spring to the summer (late May to August) and then it increased toward the end of the season. In half of the cases the resistance remained comparable between the summer (August) and the early autumn (September). The majority of plants were tolerant during most of the season and avoidance occurred only in early or late May. There was no distinct elevational difference in plant freezing resistance between the localities, since the plants from higher elevation were more resistant only in September. Hence, the greatest risk of frost injury was found during the early weeks of the growing season when the ericoid shrubs develop new leaves.

  • Název v anglickém jazyce

    Seasonal and altitudinal variation of ericoid shrub freezing resistance in temperate bogs

  • Popis výsledku anglicky

    Changes in freezing resistance and its mechanisms (i.e., avoidance by supercooling or tolerance of ice formation) were studied in two deciduous (Vaccinium myrtillus, V. uliginosum) and two evergreen (V. vitis-idaea, Oxycoccus palustris) ericoid shrubs at two elevations (470 m and 1070 m a.s.l.) throughout the growing season. The temperature causing 50% damage (i.e. Lt50) and nucleation temperature at which ice was formed in the tissues (i.e. exotherm) were measured. The aim was to investigate whether the freezing resistance varied during the growing season and whether the changes were determined by elevation. Freezing resistance declined from the spring to the summer (late May to August) and then it increased toward the end of the season. In half of the cases the resistance remained comparable between the summer (August) and the early autumn (September). The majority of plants were tolerant during most of the season and avoidance occurred only in early or late May. There was no distinct elevational difference in plant freezing resistance between the localities, since the plants from higher elevation were more resistant only in September. Hence, the greatest risk of frost injury was found during the early weeks of the growing season when the ericoid shrubs develop new leaves.

Klasifikace

  • Druh

    J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

  • CEP obor

    EF - Botanika

  • OECD FORD obor

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2016

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Silva Gabreta

  • ISSN

    1211-7420

  • e-ISSN

  • Svazek periodika

    22

  • Číslo periodika v rámci svazku

    podzim 2016

  • Stát vydavatele periodika

    CZ - Česká republika

  • Počet stran výsledku

    11

  • Strana od-do

    63-73

  • Kód UT WoS článku

  • EID výsledku v databázi Scopus