2020
DOI: 10.5194/bg-2019-482
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Lake mixing regime selects methane-oxidation kinetics of the methanotroph assemblage

Abstract: <p><strong>Abstract.</strong> In freshwater lakes, large amounts of methane are produced in anoxic sediments. Methane-oxidizing bacteria effectively convert this potent greenhouse gas into biomass and carbon dioxide. These bacteria are present throughout the water column where methane concentrations can range from nanomolar to millimolar concentrations. In this study, we tested the hypothesis that methanotroph assemblages in seasonally stratified lakes are adapted to t… Show more

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Cited by 7 publications
(9 citation statements)
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“…CH 4 emissions from lakes are a net balance between methane production by methanogens and consumption by methane oxidizers [methanotrophs (MO)]. According to the estimates, MO can consume between 30 and 99% of CH 4 produced in the sediments and the water column before it reaches the atmosphere (Frenzel et al, 1990;Kankaala et al, 2006;Bastviken et al, 2008;Mayr et al, 2020b). The extent of emissions depends on the efficiency of the methanotrophic biofilter and environmental conditions, such as mixing patterns, ebullition, and trophic state of the lakes (Kankaala et al, 2007;Bellido et al, 2009;Yang et al, 2019).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…CH 4 emissions from lakes are a net balance between methane production by methanogens and consumption by methane oxidizers [methanotrophs (MO)]. According to the estimates, MO can consume between 30 and 99% of CH 4 produced in the sediments and the water column before it reaches the atmosphere (Frenzel et al, 1990;Kankaala et al, 2006;Bastviken et al, 2008;Mayr et al, 2020b). The extent of emissions depends on the efficiency of the methanotrophic biofilter and environmental conditions, such as mixing patterns, ebullition, and trophic state of the lakes (Kankaala et al, 2007;Bellido et al, 2009;Yang et al, 2019).…”
Section: Introductionmentioning
confidence: 99%
“…So far, the abundance of rare MO has been associated with the expression and detection of the genes associated with the CH 4 oxidation (Crevecoeur et al, 2017), while the diversity of the MO communities may be correlated with oxidation rates (Bodelier et al, 2013). Rare taxa can also serve as a seed for when conditions change (Graf et al, 2018;Mayr et al, 2020b) and should therefore be considered. Also, methodological issues should be taken into account as most previous studies on methanotrophs have been done using PCR-based methods looking into the diversity of 16S rRNA or pmoA genes (Crevecoeur et al, 2017(Crevecoeur et al, , 2019Rissanen et al, 2018;Mayr et al, 2020c).…”
Section: Introductionmentioning
confidence: 99%
“…Answer: We have provided evidence for the dynamic adaptation in (Mayr et al 2020), but the reviewer is correct that the phrasing here is misleading and while our data here is in line with the previous investigation the conclusion cannot be made from the data in this paper. We will remove or rephrase this sentence in the revised manuscript.…”
Section: Interactive Commentmentioning
confidence: 68%
“…To investigate the gene expression of pmoC-phages in situ , we analyzed a set of metagenomic and metatranscriptomic datasets made public very recently 34 , and obtained another 6 complete genomes of pmoC-phages that are phylogenetically related to those from our other study systems ( Table 1, Supplementary Fig. 17 ).…”
Section: Metabolic Potentials Of Pmoc-phages and Their Relativesmentioning
confidence: 99%