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Oak sprouts grow better than seedlings under drought stress

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F16%3A00464473" target="_blank" >RIV/86652079:_____/16:00464473 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/62156489:43410/16:43909824

  • Výsledek na webu

    <a href="http://dx.doi.org/10.3832/ifor1823-009" target="_blank" >http://dx.doi.org/10.3832/ifor1823-009</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3832/ifor1823-009" target="_blank" >10.3832/ifor1823-009</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Oak sprouts grow better than seedlings under drought stress

  • Popis výsledku v původním jazyce

    This study focused on the comparison of two contrasting forest regeneration types and their susceptibility to drought stress. Transpiration and biomass production were studied on young sessile oak trees Quercus petraea (Matt.) Liebl. regenerated as sprouts and seedlings, and grown in a coppice experimental site in the Czech Republic. Biomass production was estimated using destructive methods, while transpiration was derived from sap flow measurements and assessed according to the plant biometry and microclimatic conditions. Sprouts were characterized by a significantly higher diameter, height, leaf area and above-ground biomass and by a lower wood density as compared with seedlings of the same age. Moreover, the sap flow of sprouts was higher than that of seedlings, which was explained by the plant dimension. Transpiration, expressed as sap flow scaled to plant leaf area, did not differ between seedlings and sprouts when soil water was not limiting. However, during drought periods, when soil water potential dropped below -1.4 MPa, sprouts transpired significantly more than seedlings. Our results confirm that sprouts have access to a larger water pool via the old stump root system and are able to draw more water under drought. Moreover, sprouts seemed to be less susceptible to water limitations than seedlings of similar age. Less influence of drought on sprouts may partially explain their higher above-ground biomass production. Based on our results, coppice could be an appropriate management system to be adopted in sites characterized by frequent or extreme drought periods.

  • Název v anglickém jazyce

    Oak sprouts grow better than seedlings under drought stress

  • Popis výsledku anglicky

    This study focused on the comparison of two contrasting forest regeneration types and their susceptibility to drought stress. Transpiration and biomass production were studied on young sessile oak trees Quercus petraea (Matt.) Liebl. regenerated as sprouts and seedlings, and grown in a coppice experimental site in the Czech Republic. Biomass production was estimated using destructive methods, while transpiration was derived from sap flow measurements and assessed according to the plant biometry and microclimatic conditions. Sprouts were characterized by a significantly higher diameter, height, leaf area and above-ground biomass and by a lower wood density as compared with seedlings of the same age. Moreover, the sap flow of sprouts was higher than that of seedlings, which was explained by the plant dimension. Transpiration, expressed as sap flow scaled to plant leaf area, did not differ between seedlings and sprouts when soil water was not limiting. However, during drought periods, when soil water potential dropped below -1.4 MPa, sprouts transpired significantly more than seedlings. Our results confirm that sprouts have access to a larger water pool via the old stump root system and are able to draw more water under drought. Moreover, sprouts seemed to be less susceptible to water limitations than seedlings of similar age. Less influence of drought on sprouts may partially explain their higher above-ground biomass production. Based on our results, coppice could be an appropriate management system to be adopted in sites characterized by frequent or extreme drought periods.

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

    <a href="/cs/project/EE2.3.20.0267" target="_blank" >EE2.3.20.0267: Výmladkové lesy jako produkční a biologická alternativa budoucnosti</a><br>

  • 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

    iForest – Biogeosciences and Forestry

  • ISSN

    1971-7458

  • e-ISSN

  • Svazek periodika

    9

  • Číslo periodika v rámci svazku

    4

  • Stát vydavatele periodika

    IT - Italská republika

  • Počet stran výsledku

    7

  • Strana od-do

    529-535

  • Kód UT WoS článku

    000384724700003

  • EID výsledku v databázi Scopus

    2-s2.0-84991380537