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The influence of oxygen and methane on nitrogen fixation in subarctic Sphagnum mosses

Overview of attention for article published in AMB Express, May 2018
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  • In the top 25% of all research outputs scored by Altmetric
  • Good Attention Score compared to outputs of the same age (73rd percentile)

Mentioned by

14 tweeters


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46 Mendeley
The influence of oxygen and methane on nitrogen fixation in subarctic Sphagnum mosses
Published in
AMB Express, May 2018
DOI 10.1186/s13568-018-0607-2
Pubmed ID

Martine A. R. Kox, Sanni L. Aalto, Timo Penttilä, Katharina F. Ettwig, Mike S. M. Jetten, Maartje A. H. J. van Kessel


Biological nitrogen fixation is an important source of bioavailable nitrogen in Sphagnum dominated peatlands. Sphagnum mosses harbor a diverse microbiome including nitrogen-fixing and methane (CH4) oxidizing bacteria. The inhibitory effect of oxygen on microbial nitrogen fixation is documented for many bacteria. However, the role of nitrogen-fixing methanotrophs in nitrogen supply to Sphagnum peat mosses is not well explored. Here, we investigated the role of both oxygen and methane on nitrogen fixation in subarctic Sphagnum peat mosses. Five species of Sphagnum mosses were sampled from two mesotrophic and three oligotrophic sites within the Lakkasuo peatland in Orivesi, central Finland. Mosses were incubated under either ambient or low oxygen conditions in the presence or absence of methane. Stable isotope activity assays revealed considerable nitrogen-fixing and methane-assimilating rates at all sites (1.4 ± 0.2 µmol 15N-N2 g-1 DW day-1 and 12.0 ± 1.1 µmol 13C-CH4 g-1 DW day-1, respectively). Addition of methane did not stimulate incorporation of 15N-nitrogen into biomass, whereas oxygen depletion increased the activity of the nitrogen-fixing community. Analysis of the 16S rRNA genes at the bacterial community level showed a very diverse microbiome that was dominated by Alphaproteobacteria in all sites. Bona fide methane-oxidizing taxa were not very abundant (relative abundance less than 0.1%). Based on our results we conclude that methanotrophs did not contribute significantly to nitrogen fixation in the investigated peatlands.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 46 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 46 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 13 28%
Student > Master 6 13%
Student > Ph. D. Student 5 11%
Student > Bachelor 4 9%
Student > Doctoral Student 2 4%
Other 5 11%
Unknown 11 24%
Readers by discipline Count As %
Agricultural and Biological Sciences 13 28%
Environmental Science 9 20%
Chemistry 4 9%
Biochemistry, Genetics and Molecular Biology 3 7%
Nursing and Health Professions 1 2%
Other 4 9%
Unknown 12 26%

Attention Score in Context

This research output has an Altmetric Attention Score of 7. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 17 January 2019.
All research outputs
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Outputs from AMB Express
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Outputs of similar age
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Outputs of similar age from AMB Express
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Altmetric has tracked 18,978,726 research outputs across all sources so far. Compared to these this one has done well and is in the 81st percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,123 research outputs from this source. They receive a mean Attention Score of 2.9. This one has done particularly well, scoring higher than 92% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 289,592 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 73% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them