About: Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Characteristics of CO2–C exchange were studied in a temperate herbaceous wetland in 2006 and 2007, years with contrasting hydrological regimes. Net ecosystem production (NEP) was calculated from the CO2 fluxes measured by the eddy-covariance technique and was compared with the seasonal course of plant live aboveground biomass. The results show that: (1) the annual net uptake of CO2–C was 199 and 220 g C m1 yr1 in 2006 and 2007, respectively. The daily net CO2–C uptake reached 12–20 g C m2 day1 in sunny summer days. (2) Although the observed wetland is adapted to floods, the summer flood substantially reduced its net CO2–C uptake. The daily courses of net CO2–C uptake point to reduced rates of CO2–C fixation by the vegetation cover. (3) A recovery growth of plant biomass was associated with a second peak of NEP in September 2006. (4) Lack of knowledge on the dynamics of methane emissions presently limits deeper understanding of the effect of floods on carbon balance in wetlands. Characteristics of CO2–C exchange were studied in a temperate herbaceous wetland in 2006 and 2007, years with contrasting hydrological regimes. Net ecosystem production (NEP) was calculated from the CO2 fluxes measured by the eddy-covariance technique and was compared with the seasonal course of plant live aboveground biomass. The results show that: (1) the annual net uptake of CO2–C was 199 and 220 g C m1 yr1 in 2006 and 2007, respectively. The daily net CO2–C uptake reached 12–20 g C m2 day1 in sunny summer days. (2) Although the observed wetland is adapted to floods, the summer flood substantially reduced its net CO2–C uptake. The daily courses of net CO2–C uptake point to reduced rates of CO2–C fixation by the vegetation cover. (3) A recovery growth of plant biomass was associated with a second peak of NEP in September 2006. (4) Lack of knowledge on the dynamics of methane emissions presently limits deeper understanding of the effect of floods on carbon balance in wetlands. (en)
Title	Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh (en)
skos:prefLabel	Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh Influence of summer flood on the net ecosystem exchange of CO2 in a temperate sedge-grass marsh (en)
skos:notation	RIV/67179843:_____/09:00342873!RIV11-MZP-67179843
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(SP/2D1/93/07), Z(AV0Z60870520)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Janouš, Dalibor Čížková, Hana Czerný, Radek Dušek, Jiří Taufarová, Klára
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Centrum výzkumu globální změny AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	319355
http://linked.open...ai/riv/idVysledku	RIV/67179843:_____/09:00342873
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Wetland; Carbon; Water level; Eddy covariance; Carex acuta L. (en)
http://linked.open.../riv/klicoveSlovo	Carbon Water level Carex acuta L. Eddy covariance Wetland
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[130CA7718E45]
http://linked.open...i/riv/nazevZdroje	Agricultural and Forest Meteorology
http://linked.open...in/vavai/riv/obor	ED
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Czech Terra - adaptation of lanscape carbon sinks in the context of global change
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	149
http://linked.open...iv/tvurceVysledku	Dušek, Jiří Janouš, Dalibor Taufarová, Klára Czerný, Radek Čížková, Hana Šmídová, M.
http://linked.open...ain/vavai/riv/wos	000267626300013
http://linked.open...n/vavai/riv/zamer	Spatial and functional dynamics of biological, ecological and socio-economic systems interacting with global climatic change
issn	0168-1923
number of pages	7 (xsd:int)

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