CO2 and CH4 fluxes from inundated floodplain ponds: role of diel variability and duration of inundation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73623065" target="_blank" >RIV/61989592:15310/23:73623065 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.frontiersin.org/articles/10.3389/fenvs.2023.1006988/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fenvs.2023.1006988/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fenvs.2023.1006988" target="_blank" >10.3389/fenvs.2023.1006988</a>

Jazyk výsledku

angličtina

Název v původním jazyce

CO2 and CH4 fluxes from inundated floodplain ponds: role of diel variability and duration of inundation

Popis výsledku v původním jazyce

Small waterbodies like floodplain ponds are considered to be an important component of the global carbon budget. Although they are found in large numbers worldwide and their numbers are increasing every year due to the creation of new ponds, we do not have sufficient data on direct estimates of emission fluxes from these waterbodies yet. Herein, we present results from a set of 24 ponds located in the Morava River floodplain, Czech Republic. The ponds varied in their origin (man-made vs. natural), size, depth, sediment organic matter content, and macrophyte growth. Water chemistry parameters, concentrations, and exchange of CO2 and CH4 with the atmosphere were directly measured during the day and night from spring to summer 2020. The ponds emitted more CO2 and CH4 during nighttime, and both CO2 and, in particular, CH4 emissions tend to increase with the duration of pond inundation. Total diffusive fluxes of CO2 and CH4 into the atmosphere ranged from -37072.9 to 432683.3 mu mol m(-2) d(-1), and -11485.3 to 95,889.6 mu mol m(-2) day(-1), respectively. Generally, all ponds were found to be a net source of CO2 and CH4 to the atmosphere. In average, ponds emitted 7.64 g CO2-equivalent m(-2) d(-1). Thus, our results indicate that floodplain ponds are an important source of both CO2 and CH4 to the atmosphere and they should not be omitted in a regional carbon budget.

Název v anglickém jazyce

CO2 and CH4 fluxes from inundated floodplain ponds: role of diel variability and duration of inundation

Popis výsledku anglicky

Small waterbodies like floodplain ponds are considered to be an important component of the global carbon budget. Although they are found in large numbers worldwide and their numbers are increasing every year due to the creation of new ponds, we do not have sufficient data on direct estimates of emission fluxes from these waterbodies yet. Herein, we present results from a set of 24 ponds located in the Morava River floodplain, Czech Republic. The ponds varied in their origin (man-made vs. natural), size, depth, sediment organic matter content, and macrophyte growth. Water chemistry parameters, concentrations, and exchange of CO2 and CH4 with the atmosphere were directly measured during the day and night from spring to summer 2020. The ponds emitted more CO2 and CH4 during nighttime, and both CO2 and, in particular, CH4 emissions tend to increase with the duration of pond inundation. Total diffusive fluxes of CO2 and CH4 into the atmosphere ranged from -37072.9 to 432683.3 mu mol m(-2) d(-1), and -11485.3 to 95,889.6 mu mol m(-2) day(-1), respectively. Generally, all ponds were found to be a net source of CO2 and CH4 to the atmosphere. In average, ponds emitted 7.64 g CO2-equivalent m(-2) d(-1). Thus, our results indicate that floodplain ponds are an important source of both CO2 and CH4 to the atmosphere and they should not be omitted in a regional carbon budget.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Frontiers in Environmental Science

ISSN

2296-665X

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

16

Strana od-do

"1006988-1"-"1006988-16"

Kód UT WoS článku

001036921600001

EID výsledku v databázi Scopus

2-s2.0-85165987298