Greenhouse gas (CO2, CH4, N2O) emissions to the atmosphere from a small lowland stream in Czech Republic

Hlaváčová, Eva; Rulı́k, Martin; Čáp, Lubomír; Mach, Václav

doi:10.1127/0003-9136/2006/0165-0339

Cited by 35 publications

(32 citation statements)

References 29 publications

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“…Similar pathway of methane cycling has been observed by Kuivila et al (1988) in well oxygenated sediments of Lake Washington, however, methane oxidation within the sediments would be rather normal in river sediments compared to lakes. All the above mentioned findings support our previous suggestions that coexistence of various metabolic processes in hyporheic sediments is common due to vertical and horizontal mixing of the interstitial water and occurrence of microbial biofilm (Hlaváčová et al 2005(Hlaváčová et al , 2006.…”

Section: Benthic Fluxes and Potential Methane Oxidationsupporting

confidence: 91%

“…Availability of interstitial habitats for bacteria and archaea carrying out anaerobic processes has been confirmed by our previous (Hlaváčová et al 2005(Hlaváčová et al , 2006Cupalová & Rulík 2007) and contemporary findings. During this study we found relatively well developed populations of methanogenic archaea at all localities and that all localities also showed positive methanogenic potential.…”

Section: Occurence Of Methane In Stream Water and Sedimentssupporting

confidence: 75%

“…Emissions of methane from water ecosystems results from complex microbial activity in the carbon cycle (production and consumption processes), which depends upon a large number of environmental parameters such as availability of carbon and terminal electron acceptors, flow velocity and turbulence, water depth. In our previous paper (Hlaváčová et al 2006), we suggested that surface water concentrations, and as a consequence methane gas emissions to the atmosphere would result from downstream transport of gases by stream water (advection in/out), and moreover, from autochthonous microbial metabolism within the hyporheic zone. If so, surface water is continually saturated by gases produced by hyporheic metabolism, leading to supersaturation of surface water and induced diffusion of these gases out of river water (volatizing).…”

Section: Occurence Of Methane In Stream Water and Sedimentsmentioning

confidence: 99%

“…Since a relatively high production of methane has been measured in river sediments (e.g. Schindler & Krabbenhoft 1998, Hlaváčová et al 2005, Sanders et al 2007, Wilcock & Sorrell 2008, Sanz et al 2011, we proposed that river sediments may act as a considerable source of this greenhouse gas which is important in global warming (Hlaváčová et al 2006). …”

Section: Introductionmentioning

confidence: 97%

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Methanogenic System of a Small Lowland Stream Sitka, Czech Republic

Rulk¹,

Bednak²,

Mach³

et al. 2013

Biomass Now - Cultivation and Utilization

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Section: Benthic Fluxes and Potential Methane Oxidationsupporting

confidence: 91%

Section: Occurence Of Methane In Stream Water and Sedimentssupporting

confidence: 75%

Section: Occurence Of Methane In Stream Water and Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Methanogenic System of a Small Lowland Stream Sitka, Czech Republic

Rulk¹,

Bednak²,

Mach³

et al. 2013

Biomass Now - Cultivation and Utilization

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“…The methanogenesis and other degradation processes result in the production of CO 2 , CH 4 , and N 2 O, which then supersaturate the interstitial water and eventually emit them into the atmosphere [20]. Based on previous studies, we suppose that stream sediments are a source of gases that are important in global warming.…”

mentioning

confidence: 99%

Seasonal Measurement of Greenhouse Gas Concentrations and Emissions Along the Longitudinal Profile of a Small Stream

Mach¹,

Bednařík²,

Čáp³

et al. 2016

Pol. J. Environ. Stud.

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IntroductionIn 2011 the global mean concentration of atmospheric CO 2 was 391 ppm [1], and the average rate of increase in the concentration of atmospheric CO 2 over the period spanning from 1960 to 2005 of 1.4 ppm yr -1 is therefore considered to be the main driver of climate change [2]. The global mean concentrations of CH 4 and N 2 O in 2011 were 1,803 ppb and 324 ppb, respectively [1]. The significant ability of CH 4 and N 2 O molecules to absorb Pol. J. Environ. Stud. Vol. 25, No. 5 (2016), 2047-2056 AbstractIn order to find out whether streams might be a major source of greenhouse gases to the atmosphere, our investigation sought to determine the total emissions of CH 4 , CO 2 , and N 2 O from the surface water of a small stream. Over a period of a year we used floating chambers to measure gas emissions along the longitudinal profile of Sitka Stream (Czech Republic). Additionally, we measured gas concentrations of surface and interstitial waters. We found that interstitial and surface waters were supersaturated by all monitored gasesespecially by CH 4 -and that the stream is a significant emitter of these greenhouse gases. The concentrations and the emission rates of all three gases were higher in the downstream part than upstream. In the case of CH 4 the majority of total annual emissions (90%) was released from the most downstream section, representing only 1/5 of the stream's total surface area (0.18 km 2 ). The majority of CH 4 and CO 2 emissions were released during warmer periods of the year and the highest N 2 O emissions from Sitka were recorded during summer and winter. The total annual emissions of CH 4 , CO 2 , and N 2 O into the atmosphere from the water's surface were estimated to be 0.6 t, 210 t, and 0.2 t, respectively. After conversion of the greenhouse gas emissions to CO 2 equivalents using a calculation by IPCC, CO 2 accounts for the majority of total annual emissions of greenhouse gases (70.1%), with the second being N 2 O (22.7%), and the last CH 4 (7.2%) for a 100-year time horizon. This work brings worthwhile data of greenhouse gas emissions and concentrations from a small water stream based on seasonal measurements along the longitudinal profile.

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Contribution of Methane Benthic and Atmospheric Fluxes of an Experimental Area (Sitka Stream)

Bednařík

Čáp

Maier

et al. 2015

CLEAN Soil Air Water

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Contributions of methane benthic fluxes and methane emissions to the total methane amount were studied during the summer season for two consecutive years. Considering the fact that methane is produced in great amount within hyporheic sediments, we have expected that both methane released by the benthic fluxes into the overlying water and methane emitted to the atmosphere should significantly affect the total methane budget of the stream water within the experimental area. In order to asses this assumption, we measured methane concentrations within the vertical sediment profile of a hyporheic zone, direct benthic methane fluxes by static chambers, methane concentrations in the surface water, and methane emissions into the atmosphere simultaneously. The methane concentrations in interstitial water tended sharply to increase with sediment depth (0.54–734.99 μmol L−1) and were strongly correlated with benthic fluxes (r = 0.88, p < 0.05). We also found a considerable variability in the benthic methane fluxes (0–12.59 mmol m−2 day−1) and the spatial variability (0–71.43%) of the experimental area, suggesting that there may be various factors that affect the rate of benthic fluxes including methanotrophy in the top sediment layers. Generally, the contribution of benthic fluxes and methane emissions to the methane budgets of the experimental area was negligible (0.034 (0.45%) and 0.074 mol day−1 (0.98%), respectively).

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Greenhouse gas (CO2, CH4, N2O) emissions to the atmosphere from a small lowland stream in Czech Republic

Cited by 35 publications

References 29 publications

Methanogenic System of a Small Lowland Stream Sitka, Czech Republic

Methanogenic System of a Small Lowland Stream Sitka, Czech Republic

Seasonal Measurement of Greenhouse Gas Concentrations and Emissions Along the Longitudinal Profile of a Small Stream

Contribution of Methane Benthic and Atmospheric Fluxes of an Experimental Area (Sitka Stream)

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