Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard
Arctic permafrost soils store substantial reserves of organic matter (OM) from which microbial transformation contributes significantly to greenhouse gas emissions of CH4 and CO2. However, many younger sediments exposed by glacier retreat and sea level change in fjord landscapes lack significant org...
Published in: | Arctic, Antarctic, and Alpine Research |
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Online Access: | https://hdl.handle.net/11250/3037299 https://doi.org/10.1080/15230430.2022.2097757 |
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ftunivbergen:oai:bora.uib.no:11250/3037299 2023-05-15T13:05:45+02:00 Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard Kolchev, Ivaylo Marshall, Ian P.G. Jones, Eleanor Yde, Jacob C. Nørnberg, Per Mateos-Rivera, Alejandro Hodson, Andrew Bak, Ebbe N. Finster, Kai 2022 application/pdf https://hdl.handle.net/11250/3037299 https://doi.org/10.1080/15230430.2022.2097757 eng eng Taylor & Francis Norges forskningsråd: 244906 urn:issn:1523-0430 https://hdl.handle.net/11250/3037299 https://doi.org/10.1080/15230430.2022.2097757 cristin:2051106 Arctic, Antarctic and Alpine research. 2022, 54 (1), 314-334. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 The Author(s) Arctic, Antarctic and Alpine research 314-334 54 1 Journal article Peer reviewed 2022 ftunivbergen https://doi.org/10.1080/15230430.2022.2097757 2023-03-14T17:42:31Z Arctic permafrost soils store substantial reserves of organic matter (OM) from which microbial transformation contributes significantly to greenhouse gas emissions of CH4 and CO2. However, many younger sediments exposed by glacier retreat and sea level change in fjord landscapes lack significant organic carbon resources, so their capacity to promote greenhouse gas emissions is unclear. We therefore studied the effects of increased temperatures (4°C and 21°C) and OM on rates of Fe(III) reduction, CO2 production, and methanogenesis in three different Holocene sedimentary units from a single site within the former marine limit of Adventdalen, Svalbard. Higher temperature and OM addition generally stimulated CH4 production and CO2 production and an increase in Bacteria and Archaea abundance in all units, whereas an equal stimulation of Fe(II) production by OM amendment and an increase in temperature to 21°C was only observed in a diamicton. We observed an accumulation of Fe(II) in beach and delta deposits as well but saw no stimulating effect of additional OM or increased temperature. Interestingly, we observed a small but significant production of CH4 in all units despite the presence of large reservoirs of Fe(III), sulfate, and nitrate, indicating either the availability of substrates that are primarily used by methanogens or a tight physical coupling between fermentation and methanogenesis by direct electron transfer. Our study clearly illustrates a significant challenge that comes with the large heterogeneity on a narrow spatial scale that one encounters when studying soils that have complex histories. publishedVersion Article in Journal/Newspaper Adventdalen Antarctic and Alpine Research Arctic Arctic glacier permafrost Svalbard University of Bergen: Bergen Open Research Archive (BORA-UiB) Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Bolterdalen ENVELOPE(15.945,15.945,78.146,78.146) Svalbard Arctic, Antarctic, and Alpine Research 54 1 314 334 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
Arctic permafrost soils store substantial reserves of organic matter (OM) from which microbial transformation contributes significantly to greenhouse gas emissions of CH4 and CO2. However, many younger sediments exposed by glacier retreat and sea level change in fjord landscapes lack significant organic carbon resources, so their capacity to promote greenhouse gas emissions is unclear. We therefore studied the effects of increased temperatures (4°C and 21°C) and OM on rates of Fe(III) reduction, CO2 production, and methanogenesis in three different Holocene sedimentary units from a single site within the former marine limit of Adventdalen, Svalbard. Higher temperature and OM addition generally stimulated CH4 production and CO2 production and an increase in Bacteria and Archaea abundance in all units, whereas an equal stimulation of Fe(II) production by OM amendment and an increase in temperature to 21°C was only observed in a diamicton. We observed an accumulation of Fe(II) in beach and delta deposits as well but saw no stimulating effect of additional OM or increased temperature. Interestingly, we observed a small but significant production of CH4 in all units despite the presence of large reservoirs of Fe(III), sulfate, and nitrate, indicating either the availability of substrates that are primarily used by methanogens or a tight physical coupling between fermentation and methanogenesis by direct electron transfer. Our study clearly illustrates a significant challenge that comes with the large heterogeneity on a narrow spatial scale that one encounters when studying soils that have complex histories. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Kolchev, Ivaylo Marshall, Ian P.G. Jones, Eleanor Yde, Jacob C. Nørnberg, Per Mateos-Rivera, Alejandro Hodson, Andrew Bak, Ebbe N. Finster, Kai |
spellingShingle |
Kolchev, Ivaylo Marshall, Ian P.G. Jones, Eleanor Yde, Jacob C. Nørnberg, Per Mateos-Rivera, Alejandro Hodson, Andrew Bak, Ebbe N. Finster, Kai Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard |
author_facet |
Kolchev, Ivaylo Marshall, Ian P.G. Jones, Eleanor Yde, Jacob C. Nørnberg, Per Mateos-Rivera, Alejandro Hodson, Andrew Bak, Ebbe N. Finster, Kai |
author_sort |
Kolchev, Ivaylo |
title |
Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard |
title_short |
Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard |
title_full |
Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard |
title_fullStr |
Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard |
title_full_unstemmed |
Microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, Bolterdalen, Svalbard |
title_sort |
microbial iron reduction and greenhouse gas production in response to organic matter amendment and temperature increase of periglacial sediments, bolterdalen, svalbard |
publisher |
Taylor & Francis |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3037299 https://doi.org/10.1080/15230430.2022.2097757 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) ENVELOPE(15.945,15.945,78.146,78.146) |
geographic |
Adventdalen Arctic Bolterdalen Svalbard |
geographic_facet |
Adventdalen Arctic Bolterdalen Svalbard |
genre |
Adventdalen Antarctic and Alpine Research Arctic Arctic glacier permafrost Svalbard |
genre_facet |
Adventdalen Antarctic and Alpine Research Arctic Arctic glacier permafrost Svalbard |
op_source |
Arctic, Antarctic and Alpine research 314-334 54 1 |
op_relation |
Norges forskningsråd: 244906 urn:issn:1523-0430 https://hdl.handle.net/11250/3037299 https://doi.org/10.1080/15230430.2022.2097757 cristin:2051106 Arctic, Antarctic and Alpine research. 2022, 54 (1), 314-334. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1080/15230430.2022.2097757 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
54 |
container_issue |
1 |
container_start_page |
314 |
op_container_end_page |
334 |
_version_ |
1766392707924623360 |