Seasonal Study of Methane Oxidation in Lake Washington

Lidstrom, Mary E.; Somers, Leslie

doi:10.1128/aem.47.6.1255-1260.1984

Cited by 128 publications

(70 citation statements)

References 9 publications

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“…Methanotrophic bacterial production has rarely been reported, and therefore we rely on total methane-oxidation estimates for comparison with previous studies. Individual measurements of methane oxidation in this study, ranging from 0.01 to 39 mg C·m 3 ·d Ϫ1 , are in line with previously reported estimates of methane oxidation in lakes (0-207 mg C·m 3 ·d Ϫ1 ; Jannasch 1975, Rudd and Hamilton 1975, Harrits and Hanson 1980, Lidstrom and Somers 1984, Bédard and Knowles 1997, Striegl and Michmerhuisen 1998, Utsumi et al 1998). Regarding depth-integrated estimates, Rudd and Taylor (1980) and Striegl and Michmerhuisen (1998) used bottle incubations to monitor methane concentration change over time, and reported lake-area specific methane oxidation to be 10-700 mg C·m Ϫ2 ·d Ϫ1 .…”

Section: Methane Concentrations and Bacterial Activitiessupporting

confidence: 92%

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Methane as a Source of Carbon and Energy for Lake Pelagic Food Webs

Bastviken

Ejlertsson

Sundh

et al. 2003

Ecology

186

167

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Water‐column methane oxidation can represent a substantial carbon transformation pathway in lakes, and circumstantial evidence indicates that methane may be a potentially important source of carbon for pelagic food webs. We estimated methanotrophic bacterial production (MBP), methanotrophic bacterial growth efficiency (MBGE), heterotrophic bacterial production (HBP), primary production (PP), and the relative contribution of methanotrophic bacteria to overall bacterial biomass in three very different lakes during summer and winter. In addition, we measured stable carbon isotope ratios in particulate organic matter (POM), surface sediments, zooplankton, and methane. MBP corresponded to 0.3–7% of the organic C production by primary producers, and 0.5–17% of HBP during summer. During winter, MBP was 3–120% of HBP. MBP generally dominated the heterotrophic bacterial production at greater depths. Methanotrophic biomass was 3–11% of total bacterial biomass on a depth‐integrated basis. Zooplankton were generally more depleted in 13C than POM. If phytoplankton δ13C signatures were −35 to −30‰, such as the POM signals, observed zooplankton signatures could be explained by a fraction of 5–15% methanotrophic bacteria in their diet. The results indicate that methanotrophic bacteria can provide a significant food source for zooplankton, and that methane oxidation represents a potentially important benthic–pelagic carbon and energy link in many lakes, particularly during winter. Corresponding Editor: J. B. Yavitt.

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Section: Methane Concentrations and Bacterial Activitiessupporting

confidence: 92%

“…84,No. 4 M (Rudd and Hamilton 1978, Harrits and Hanson 1980, Lidstrom and Somers 1984, Liu et al 1996, Bédard and Knowles 1997, Striegl and Michmerhuisen 1998, Utsumi et al 1998. Both this range and the methane concentration profiles reported correspond well with our results (Fig.…”

Section: Methane Concentrations and Bacterial Activitiessupporting

confidence: 92%

Methane as a Source of Carbon and Energy for Lake Pelagic Food Webs

Bastviken

Ejlertsson

Sundh

et al. 2003

Ecology

186

167

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“…There are results suggesting the existence of more than one reaction center in particulate MMO [35], yet in both pure cultures and sediment, Michaelis Menten kinetics have been observed [10,36,37]. The Vma x values determined in this study were in the upper range of Vm~ , values reported in the literature [6,37,38]. The S0.…”

supporting

confidence: 50%

“…2). The K m for 0 2 between 20 and 37/zM 0 2 [38,39] allows at least half maximal velocity with respect to oxygen only in the top 1 mm sediment layer. For CH 4 oxidation with respect to both 02 and CH4, the layer with at least half maximal velocity is probably even thinner.…”

mentioning

confidence: 99%

Inhibition of methane oxidation by ammonium in the surface layer of a littoral sediment

Bosse¹

1993

FEMS Microbiology Ecology

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The diffusive flux of CH 4 from the sediment into the water was measured in intact sediment cores taken from the littoral of Lake Constance. CH 4 fluxes were measured under oxic and anoxic conditions. Emissions under anoxic conditions were used to estimate the potential diffusive flux. The results showed that about 79% of the CH 4 diffusing upwards was oxidized at the sediment surface. Kinetic measurements of CH 4 oxidation in diluted surface sediment gave Vm~ x = 1.2/zmol CH4 ml~ h -1. This was high enough to explain the oxidation rates calculated from the flux measurements. NH~-was added to the water overlaying the sediment cores to measure its influence on CH4 oxidation. This treatment resulted in increased concentrations of pore water NH~which were measured with a NH~-microelectrode. Pore water NH~-concentrations of < 4 mM had no effect on CH 4 oxidation while concentrations between 4 and 10 mM NH~-reduced the CH 4 oxidation rates by about 30%. Measurement of CH 4 oxidation rates in diluted surface sediment gave similar results. At CH 4 concentrations of 21/zM, the CH 4 oxidation rate decreased at NH~concentrations > 4 mM, and was completely inhibited at NH~-concentrations > 20 mM. Measurements of potential NH~oxidation rates were below the detection limit of 0.5 nmol NO~ produced ml~ h-1. Thus, the NH~" oxidizing activity was about 3 magnitudes lower than the CH 4 oxidizing activity, and it is unlikely that NH~ oxidizers are important for CH 4 oxidation in this littoral sediment.

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“…The K, value for methane uptake (1.6 PM) is slightly lower than previously reported values. K, values reported for methane consumption by soils and sediments range from 2.5 for a landfill cover soil [ 151 and 2.2 to 3.7 for a Danish Wetland [ 131 to 8.3 to 10.7 for Lake Washington sediments [33]. Yavitt et al [3] reported K, = 3.7 to 42.0 pmol I_ , peat from intact peat cores of a West Virginia bog.…”

Section: Discussionmentioning

confidence: 99%

Methanogenesis and methanotrophy within a Sphagnum peatland

Krumholz¹,

Hollenback²,

Roskes³

et al. 1995

FEMS Microbiology Ecology

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Methane production and consumption activities were examined in a Massachusetts peatland. Peat from depths of 5-35 cm incubated under anaerobic conditions, produced an average of 2 nmol CH, g-' hK' with highest rates for peat fractions between 25-30 cm depth. Extracted microbial nucleic acids showed the strongest relative hybridization with a 16s rRNA oligonucleotide probe specific for Archaea with samples from the 25-30 cm depth. In aerobic laboratory incubations, the peat consumed methane with a maximum velocity of 67 nmol CH, g-' h-' and a K, of 1.6 FM. Methane consumption activity was concentrated 4-9 cm below the peat surface, which corresponds to the aerobic, partially decomposed region in this peatland. Phospholipid fatty acid analysis of peat fractions demonstrated an abundance of methanotrophic bacteria within the region of methane consumption activity. Increases in temperature up to 30°C produced an increase in methane consumption rates for shallow samples, but not for samples taken from depths greater than 9 cm. Nitrogen fixation experiments were carried out using 15Nz uptake in order to avoid problems associated with inhibition of methanotrophy.These experiments demonstrated that methane in peat samples did not stimulate nitrogen fixation activity, nor could activity be correlated with the presence of methanotrophic bacteria in peat fractions.

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Seasonal Study of Methane Oxidation in Lake Washington

Cited by 128 publications

References 9 publications

Methane as a Source of Carbon and Energy for Lake Pelagic Food Webs

Methane as a Source of Carbon and Energy for Lake Pelagic Food Webs

Inhibition of methane oxidation by ammonium in the surface layer of a littoral sediment

Methanogenesis and methanotrophy within a Sphagnum peatland

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