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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Article name in the collection

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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Number of pages

5

Pages from-to

38-41

Publisher name

Global change research institute

Place of publication

Brno

Event location

Velké Karlovice

Event date

Oct 2, 2017

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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