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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F13%3A33148283%21RIV14-GA0-15310___
rdf:type
skos:Concept n5:Vysledek
rdfs:seeAlso
http://www.intechopen.com/books/biomass-now-cultivation-and-utilization/methanogenic-system-of-a-small-lowland-stream-sitka-czech-republic
dcterms:description
Paper summarizes results of a longterm study on methanogen dynamics in hyporheic sediments of a small lowland stream Sitka. By use of various molecular methods we have shown that both methanogenic archaea and aerobic methanotrophs can be quantitatively dominant components of hyporheic biofilm community and may affect CH4 cycling in river sediments. Fluxes of CH4 from supersaturated interstitial sediments appear to be a main CH4 source toward the water column. Compared with CH4 production rates, the diffusive fluxes are very low due to efficient aerobic oxidation by methanotrophic bacteria, especially during higher flow discharges. Although fluxes to the atmosphere from the Sitka stream seems to be insignificant, they are comparable or higher in comparison with fluxes from other aquatic ecosystems, especially those measured in running waters. Finally, our results suggest that the Sitka Stream is a source of methane into the atmosphere, and loss of carbon via the fluxes of this greenhouse gas out into the ecosystem can participate significantly in river self-purification. Paper summarizes results of a longterm study on methanogen dynamics in hyporheic sediments of a small lowland stream Sitka. By use of various molecular methods we have shown that both methanogenic archaea and aerobic methanotrophs can be quantitatively dominant components of hyporheic biofilm community and may affect CH4 cycling in river sediments. Fluxes of CH4 from supersaturated interstitial sediments appear to be a main CH4 source toward the water column. Compared with CH4 production rates, the diffusive fluxes are very low due to efficient aerobic oxidation by methanotrophic bacteria, especially during higher flow discharges. Although fluxes to the atmosphere from the Sitka stream seems to be insignificant, they are comparable or higher in comparison with fluxes from other aquatic ecosystems, especially those measured in running waters. Finally, our results suggest that the Sitka Stream is a source of methane into the atmosphere, and loss of carbon via the fluxes of this greenhouse gas out into the ecosystem can participate significantly in river self-purification.
dcterms:title
Methanogenic system of a small lowland stream Sitka, Czech Republic Methanogenic system of a small lowland stream Sitka, Czech Republic
skos:prefLabel
Methanogenic system of a small lowland stream Sitka, Czech Republic Methanogenic system of a small lowland stream Sitka, Czech Republic
skos:notation
RIV/61989592:15310/13:33148283!RIV14-GA0-15310___
n5:predkladatel
n6:orjk%3A15310
n4:aktivita
n9:P
n4:aktivity
P(GA526/09/1639)
n4:dodaniDat
n18:2014
n4:domaciTvurceVysledku
n7:7304609 n7:2756765 n7:6531660 n7:8754179 n7:8702101 n7:7130139
n4:druhVysledku
n14:C
n4:duvernostUdaju
n21:S
n4:entitaPredkladatele
n11:predkladatel
n4:idSjednocenehoVysledku
87537
n4:idVysledku
RIV/61989592:15310/13:33148283
n4:jazykVysledku
n13:eng
n4:klicovaSlova
methanogenesis, methane, river sediments, methanogens methanotrophy
n4:klicoveSlovo
n8:methanogenesis n8:river%20sediments n8:methanogens%20methanotrophy n8:methane
n4:kontrolniKodProRIV
[D9C32C839BE7]
n4:mistoVydani
Rijeka
n4:nazevZdroje
Biomass now - cultivation and utilization
n4:obor
n15:EH
n4:pocetDomacichTvurcuVysledku
6
n4:pocetStranKnihy
448
n4:pocetTvurcuVysledku
7
n4:projekt
n20:GA526%2F09%2F1639
n4:rokUplatneniVysledku
n18:2013
n4:tvurceVysledku
Bednařík, Adam Badurová, Pavlína Brablcová, Lenka Gratzová, Kristýna Buriánková, Iva Mach, Václav Rulík, Martin
s:numberOfPages
31
n16:doi
10.5772/3437
n22:hasPublisher
InTech
n23:isbn
978-953-51-1106-1
n19:organizacniJednotka
15310