Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments
Summary Arctic permafrost soils store large amounts of organic matter that is sensitive to temperature increases and subsequent microbial degradation to methane (CH 4 ) and carbon dioxide (CO 2 ). Here, we studied methanogenic and methanotrophic activity and community composition in thermokarst lake...
Published in: | Environmental Microbiology |
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Online Access: | http://dx.doi.org/10.1111/1462-2920.14345 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.14345 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.14345 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.14345 |
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crwiley:10.1111/1462-2920.14345 2024-09-09T19:21:08+00:00 Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments de Jong, Anniek E. E. in ’t Zandt, Michiel H. Meisel, Ove H. Jetten, Mike S. M. Dean, Joshua F. Rasigraf, Olivia Welte, Cornelia U. H2020 European Research Council Nederlandse Organisatie voor Wetenschappelijk Onderzoek 2018 http://dx.doi.org/10.1111/1462-2920.14345 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.14345 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.14345 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.14345 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Environmental Microbiology volume 20, issue 12, page 4314-4327 ISSN 1462-2912 1462-2920 journal-article 2018 crwiley https://doi.org/10.1111/1462-2920.14345 2024-08-13T04:12:28Z Summary Arctic permafrost soils store large amounts of organic matter that is sensitive to temperature increases and subsequent microbial degradation to methane (CH 4 ) and carbon dioxide (CO 2 ). Here, we studied methanogenic and methanotrophic activity and community composition in thermokarst lake sediments from Utqiag˙vik (formerly Barrow), Alaska. This experiment was carried out under in situ temperature conditions (4°C) and the IPCC 2013 Arctic climate change scenario (10°C) after addition of methanogenic and methanotrophic substrates for nearly a year. Trimethylamine (TMA) amendment with warming showed highest maximum CH 4 production rates, being 30% higher at 10°C than at 4°C. Maximum methanotrophic rates increased by up to 57% at 10°C compared to 4°C. 16S rRNA gene sequencing indicated high relative abundance of Methanosarcinaceae in TMA amended incubations, and for methanotrophic incubations Methylococcaeae were highly enriched. Anaerobic methanotrophic activity with nitrite or nitrate as electron acceptor was not detected. This study indicates that the methane cycling microbial community can adapt to temperature increases and that their activity is highly dependent on substrate availability. Article in Journal/Newspaper Arctic Barrow Climate change permafrost Thermokarst Alaska Wiley Online Library Arctic Environmental Microbiology 20 12 4314 4327 |
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Wiley Online Library |
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crwiley |
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English |
description |
Summary Arctic permafrost soils store large amounts of organic matter that is sensitive to temperature increases and subsequent microbial degradation to methane (CH 4 ) and carbon dioxide (CO 2 ). Here, we studied methanogenic and methanotrophic activity and community composition in thermokarst lake sediments from Utqiag˙vik (formerly Barrow), Alaska. This experiment was carried out under in situ temperature conditions (4°C) and the IPCC 2013 Arctic climate change scenario (10°C) after addition of methanogenic and methanotrophic substrates for nearly a year. Trimethylamine (TMA) amendment with warming showed highest maximum CH 4 production rates, being 30% higher at 10°C than at 4°C. Maximum methanotrophic rates increased by up to 57% at 10°C compared to 4°C. 16S rRNA gene sequencing indicated high relative abundance of Methanosarcinaceae in TMA amended incubations, and for methanotrophic incubations Methylococcaeae were highly enriched. Anaerobic methanotrophic activity with nitrite or nitrate as electron acceptor was not detected. This study indicates that the methane cycling microbial community can adapt to temperature increases and that their activity is highly dependent on substrate availability. |
author2 |
H2020 European Research Council Nederlandse Organisatie voor Wetenschappelijk Onderzoek |
format |
Article in Journal/Newspaper |
author |
de Jong, Anniek E. E. in ’t Zandt, Michiel H. Meisel, Ove H. Jetten, Mike S. M. Dean, Joshua F. Rasigraf, Olivia Welte, Cornelia U. |
spellingShingle |
de Jong, Anniek E. E. in ’t Zandt, Michiel H. Meisel, Ove H. Jetten, Mike S. M. Dean, Joshua F. Rasigraf, Olivia Welte, Cornelia U. Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments |
author_facet |
de Jong, Anniek E. E. in ’t Zandt, Michiel H. Meisel, Ove H. Jetten, Mike S. M. Dean, Joshua F. Rasigraf, Olivia Welte, Cornelia U. |
author_sort |
de Jong, Anniek E. E. |
title |
Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments |
title_short |
Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments |
title_full |
Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments |
title_fullStr |
Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments |
title_full_unstemmed |
Increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in Arctic thermokarst lake sediments |
title_sort |
increases in temperature and nutrient availability positively affect methane‐cycling microorganisms in arctic thermokarst lake sediments |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/1462-2920.14345 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.14345 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.14345 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.14345 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow Climate change permafrost Thermokarst Alaska |
genre_facet |
Arctic Barrow Climate change permafrost Thermokarst Alaska |
op_source |
Environmental Microbiology volume 20, issue 12, page 4314-4327 ISSN 1462-2912 1462-2920 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/1462-2920.14345 |
container_title |
Environmental Microbiology |
container_volume |
20 |
container_issue |
12 |
container_start_page |
4314 |
op_container_end_page |
4327 |
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1809761334409035776 |