Increases in temperature and nutrient availability positively affect methane-cycling microorganisms in Arctic thermokarst lake sediments
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 sedimen...
Published in: | Environmental Microbiology |
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Online Access: | http://livrepository.liverpool.ac.uk/3029189/ https://doi.org/10.1111/1462-2920.14345 http://livrepository.liverpool.ac.uk/3029189/1/2018%20de%20Jong%20et%20al%202018,%20Environmental%20Microbiology%20-%20Alaskan%20thermokarst%20lake%20methane%20microbiology.pdf |
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ftunivliverpool:oai:livrepository.liverpool.ac.uk:3029189 2023-05-15T14:27:05+02:00 Increases in temperature and nutrient availability positively affect methane-cycling microorganisms in Arctic thermokarst lake sediments de Jong, Anniek EE in 't Zandt, Michiel H Meisel, Ove H Jetten, Mike SM Dean, Joshua F Rasigraf, Olivia Welte, Cornelia U 2018 text http://livrepository.liverpool.ac.uk/3029189/ https://doi.org/10.1111/1462-2920.14345 http://livrepository.liverpool.ac.uk/3029189/1/2018%20de%20Jong%20et%20al%202018,%20Environmental%20Microbiology%20-%20Alaskan%20thermokarst%20lake%20methane%20microbiology.pdf en eng eng Wiley http://livrepository.liverpool.ac.uk/3029189/1/2018%20de%20Jong%20et%20al%202018,%20Environmental%20Microbiology%20-%20Alaskan%20thermokarst%20lake%20methane%20microbiology.pdf de Jong, Anniek EE, in 't Zandt, Michiel H, Meisel, Ove H, Jetten, Mike SM, Dean, Joshua F orcid:0000-0001-9058-7076 , Rasigraf, Olivia and Welte, Cornelia U (2018) Increases in temperature and nutrient availability positively affect methane-cycling microorganisms in Arctic thermokarst lake sediments. ENVIRONMENTAL MICROBIOLOGY, 20 (12). pp. 4314-4327. Article NonPeerReviewed 2018 ftunivliverpool https://doi.org/10.1111/1462-2920.14345 2023-01-19T23:32:17Z 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 Arctic Barrow Climate change permafrost Thermokarst Alaska The University of Liverpool Repository Arctic Environmental Microbiology 20 12 4314 4327 |
institution |
Open Polar |
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The University of Liverpool Repository |
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ftunivliverpool |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
de Jong, Anniek EE in 't Zandt, Michiel H Meisel, Ove H Jetten, Mike SM Dean, Joshua F Rasigraf, Olivia Welte, Cornelia U |
spellingShingle |
de Jong, Anniek EE in 't Zandt, Michiel H Meisel, Ove H Jetten, Mike SM 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 EE in 't Zandt, Michiel H Meisel, Ove H Jetten, Mike SM Dean, Joshua F Rasigraf, Olivia Welte, Cornelia U |
author_sort |
de Jong, Anniek EE |
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://livrepository.liverpool.ac.uk/3029189/ https://doi.org/10.1111/1462-2920.14345 http://livrepository.liverpool.ac.uk/3029189/1/2018%20de%20Jong%20et%20al%202018,%20Environmental%20Microbiology%20-%20Alaskan%20thermokarst%20lake%20methane%20microbiology.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Barrow Climate change permafrost Thermokarst Alaska |
genre_facet |
Arctic Arctic Barrow Climate change permafrost Thermokarst Alaska |
op_relation |
http://livrepository.liverpool.ac.uk/3029189/1/2018%20de%20Jong%20et%20al%202018,%20Environmental%20Microbiology%20-%20Alaskan%20thermokarst%20lake%20methane%20microbiology.pdf de Jong, Anniek EE, in 't Zandt, Michiel H, Meisel, Ove H, Jetten, Mike SM, Dean, Joshua F orcid:0000-0001-9058-7076 , Rasigraf, Olivia and Welte, Cornelia U (2018) Increases in temperature and nutrient availability positively affect methane-cycling microorganisms in Arctic thermokarst lake sediments. ENVIRONMENTAL MICROBIOLOGY, 20 (12). pp. 4314-4327. |
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 |
_version_ |
1766300646438338560 |