Effect of elevated CO2 on morphological and photosynthetic parameters in two understory grass species in Beskydy Mountains

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F17%3A00485206" target="_blank" >RIV/86652079:_____/17:00485206 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of elevated CO2 on morphological and photosynthetic parameters in two understory grass species in Beskydy Mountains

Popis výsledku v původním jazyce

We transplanted two grass species, Calamagrostis arundinacea and Luzula sylvatica, to the understory ofna 10-year-old experimental mixed forest exposed to ambient (385 μmol CO2 mol–1, AC) and elevated (700nμmol CO2 mol–1, EC) atmospheric CO2 concentration using a glass dome facility. Effects of EC on plantnmorphology and photosynthesis were examined after three years of treatment. We tested the hypothesesnthat shade-tolerant species can profit from EC even at low light conditions and that relatively low accumulationnof assimilates at such light conditions will not cause CO2-induced down-regulation of photosynthesis.nWe expected that EC can substitute insufficient light intensities under the tree canopy and lead to bothnhigher biomass production and survival of plants in deep forest understories. The typical shade-tolerantnspecies L. sylvatica exhibited positive acclimation under EC allowing higher light use efficiency under subsaturatingnlight intensities as compared to plants grown under AC. In contrast, C. arundinacea showednhigher stimulation of growth and photosynthetic rates by EC mainly under saturating light intensities atnthe beginning of the growing season, when the forest leaf area is not fully developed and the open canopynallows a greater proportion of incident light to reach the understory. Our data indicate that growth andnphysiological responses of EC plants in forest understories are species specific, differ from responses ofnsun-exposed plants, and depend on degree of shading.

Název v anglickém jazyce

Effect of elevated CO2 on morphological and photosynthetic parameters in two understory grass species in Beskydy Mountains

Popis výsledku anglicky

We transplanted two grass species, Calamagrostis arundinacea and Luzula sylvatica, to the understory ofna 10-year-old experimental mixed forest exposed to ambient (385 μmol CO2 mol–1, AC) and elevated (700nμmol CO2 mol–1, EC) atmospheric CO2 concentration using a glass dome facility. Effects of EC on plantnmorphology and photosynthesis were examined after three years of treatment. We tested the hypothesesnthat shade-tolerant species can profit from EC even at low light conditions and that relatively low accumulationnof assimilates at such light conditions will not cause CO2-induced down-regulation of photosynthesis.nWe expected that EC can substitute insufficient light intensities under the tree canopy and lead to bothnhigher biomass production and survival of plants in deep forest understories. The typical shade-tolerantnspecies L. sylvatica exhibited positive acclimation under EC allowing higher light use efficiency under subsaturatingnlight intensities as compared to plants grown under AC. In contrast, C. arundinacea showednhigher stimulation of growth and photosynthetic rates by EC mainly under saturating light intensities atnthe beginning of the growing season, when the forest leaf area is not fully developed and the open canopynallows a greater proportion of incident light to reach the understory. Our data indicate that growth andnphysiological responses of EC plants in forest understories are species specific, differ from responses ofnsun-exposed plants, and depend on degree of shading.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Quo vaditis agriculture, forestry and society under global change? Conference proceeding

ISBN

978-80-87902-22-6

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

38-41

Název nakladatele

Global change research institute

Místo vydání

Brno

Místo konání akce

Velké Karlovice

Datum konání akce

2. 10. 2017

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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