Effect of repeated spring drought and summer heavy rain on managed grassland biomass production and CO2 efflux

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F17%3A00463993" target="_blank" >RIV/86652079:_____/17:00463993 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1093/jpe/rtw058" target="_blank" >http://dx.doi.org/10.1093/jpe/rtw058</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/jpe/rtw058" target="_blank" >10.1093/jpe/rtw058</a>

Result language

angličtina

Original language name

Effect of repeated spring drought and summer heavy rain on managed grassland biomass production and CO2 efflux

Original language description

Aims Ecosystem respiration represents an important component of the carbon cycle. The response of respiration to climate change can have a significant effect on carbon sequestration in terrestrial ecosystems in the future when, according to climate scenarios, spring drought and consequent summer heavy rains are expected. Aims of our study were to determine the effect of repeated spring drought on biomass production and CO2 efflux from a mountain grassland in Beskydy Mountains in the Czech Republic and to evaluate factors driving the differences among the study years.nMethods CO2 efflux was measured on plots with ambient precipitation conditions (AMB) and on plots where drought conditions (DRY) in the first half of the growing seasons and consequent heavy rain were simulated in 2011–14. Important Findings The spring drought significantly decreased the amount of above-ground biomass sampled just after the simulated drought in all years except for 2014. On the contrary, the spring drought stimulated root production. The drought also resulted in a rapid decrease in CO2 efflux. It was lower by up to 46% for the DRY treatment compared to AMB treatment. After the simulated drought period, differences in CO2 efflux between the treatments gradually decreased. Simulated heavy rains in DRY resulted in fast but temporary increase in CO2 efflux. We can assume that the future spring drought will have a significant effect on carbon balance of grassland ecosystems. The impact will depend on the length of the dry period and the time between the beginning of the growing season and the dry period.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/LO1415" target="_blank" >LO1415: CzechGlobe 2020 – Development of the Centre of Global Climate Change Impacts Studies</a><br>

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

Name of the periodical

Journal of Plant Ecology

ISSN

1752-9921

e-ISSN

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Volume of the periodical

10

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

475-485

UT code for WoS article

000407260100006

EID of the result in the Scopus database

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