Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes
Small, organic-rich lakes are important sources of methane (CH4) and carbon dioxide (CO2) to the atmosphere, yet the sensitivity of emissions to climate warming is poorly constrained and potentially influenced by permafrost thaw. Here, we monitored emissions from 20 peatland lakes across a 1,600 km...
Published in: | AGU Advances |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Linköpings universitet, Tema Miljöförändring
2021
|
Subjects: | |
Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182234 https://doi.org/10.1029/2021AV000515 |
id |
ftlinkoepinguniv:oai:DiVA.org:liu-182234 |
---|---|
record_format |
openpolar |
spelling |
ftlinkoepinguniv:oai:DiVA.org:liu-182234 2023-05-15T17:56:36+02:00 Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes Kuhn, McKenzie A. Thompson, Lauren M. Winder, Johanna C. Braga, Lucas P. P. Tanentzap, Andrew J. Bastviken, David Olefeldt, David 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182234 https://doi.org/10.1029/2021AV000515 eng eng Linköpings universitet, Tema Miljöförändring Linköpings universitet, Filosofiska fakulteten Univ Alberta, Canada; Univ New Hampshire, NH 03824 USA; Univ New Hampshire, NH 03824 USA Univ Alberta, Canada Univ Cambridge, England Univ Cambridge, England; Univ Sao Paulo, Brazil , 2021, 2:4, AGU Advances, 2576-604X, 2021, 2:4, orcid:0000-0003-0038-2152 http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182234 doi:10.1029/2021AV000515 ISI:000736630100004 info:eu-repo/semantics/openAccess greenhouse gas aquatic permafrost lakes climate warming Physical Geography Naturgeografi Article in journal info:eu-repo/semantics/article text 2021 ftlinkoepinguniv https://doi.org/10.1029/2021AV000515 2022-05-01T08:25:11Z Small, organic-rich lakes are important sources of methane (CH4) and carbon dioxide (CO2) to the atmosphere, yet the sensitivity of emissions to climate warming is poorly constrained and potentially influenced by permafrost thaw. Here, we monitored emissions from 20 peatland lakes across a 1,600 km permafrost transect in boreal western Canada. Contrary to expectations, we observed a shift from source to sink of CO2 for lakes warmer regions, driven by greater primary productivity associated with greater hydrological connectivity to lakes and nutrient availability in the absence of permafrost. Conversely, an 8-fold increase in CH4 emissions in warmer regions was associated with water temperature and shifts in microbial communities and dominant anaerobic processes. Our results suggest that the net radiative forcing from altered greenhouse gas emissions of northern peatland lakes this century will be dominated by increasing CH4 emissions and only partially offset by reduced CO2 emissions. Funding Agencies|Natural Sciences and Engineering Research CouncilNatural Sciences and Engineering Research Council of Canada (NSERC); Campus Alberta Innovates Program; NWT Cumulative Impact Monitoring Program; Northern Scientific Training Program, University of Alberta; UAlberta North, Vanier Canada Graduate Scholarship; W. Garfield Weston Foundation; FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2018/19,247-0, 2019/24,097-0]; Bruckmann Fund, Peterhouse College, University of Cambridge; H2020 ERC [804673, 725546]; Swedish Research Council VRSwedish Research Council [2016-04829]; FORMASSwedish Research Council Formas [2018-01794] Article in Journal/Newspaper permafrost LIU - Linköping University: Publications (DiVA) Canada AGU Advances 2 4 |
institution |
Open Polar |
collection |
LIU - Linköping University: Publications (DiVA) |
op_collection_id |
ftlinkoepinguniv |
language |
English |
topic |
greenhouse gas aquatic permafrost lakes climate warming Physical Geography Naturgeografi |
spellingShingle |
greenhouse gas aquatic permafrost lakes climate warming Physical Geography Naturgeografi Kuhn, McKenzie A. Thompson, Lauren M. Winder, Johanna C. Braga, Lucas P. P. Tanentzap, Andrew J. Bastviken, David Olefeldt, David Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes |
topic_facet |
greenhouse gas aquatic permafrost lakes climate warming Physical Geography Naturgeografi |
description |
Small, organic-rich lakes are important sources of methane (CH4) and carbon dioxide (CO2) to the atmosphere, yet the sensitivity of emissions to climate warming is poorly constrained and potentially influenced by permafrost thaw. Here, we monitored emissions from 20 peatland lakes across a 1,600 km permafrost transect in boreal western Canada. Contrary to expectations, we observed a shift from source to sink of CO2 for lakes warmer regions, driven by greater primary productivity associated with greater hydrological connectivity to lakes and nutrient availability in the absence of permafrost. Conversely, an 8-fold increase in CH4 emissions in warmer regions was associated with water temperature and shifts in microbial communities and dominant anaerobic processes. Our results suggest that the net radiative forcing from altered greenhouse gas emissions of northern peatland lakes this century will be dominated by increasing CH4 emissions and only partially offset by reduced CO2 emissions. Funding Agencies|Natural Sciences and Engineering Research CouncilNatural Sciences and Engineering Research Council of Canada (NSERC); Campus Alberta Innovates Program; NWT Cumulative Impact Monitoring Program; Northern Scientific Training Program, University of Alberta; UAlberta North, Vanier Canada Graduate Scholarship; W. Garfield Weston Foundation; FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2018/19,247-0, 2019/24,097-0]; Bruckmann Fund, Peterhouse College, University of Cambridge; H2020 ERC [804673, 725546]; Swedish Research Council VRSwedish Research Council [2016-04829]; FORMASSwedish Research Council Formas [2018-01794] |
format |
Article in Journal/Newspaper |
author |
Kuhn, McKenzie A. Thompson, Lauren M. Winder, Johanna C. Braga, Lucas P. P. Tanentzap, Andrew J. Bastviken, David Olefeldt, David |
author_facet |
Kuhn, McKenzie A. Thompson, Lauren M. Winder, Johanna C. Braga, Lucas P. P. Tanentzap, Andrew J. Bastviken, David Olefeldt, David |
author_sort |
Kuhn, McKenzie A. |
title |
Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes |
title_short |
Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes |
title_full |
Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes |
title_fullStr |
Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes |
title_full_unstemmed |
Opposing Effects of Climate and Permafrost Thaw on CH4 and CO2 Emissions From Northern Lakes |
title_sort |
opposing effects of climate and permafrost thaw on ch4 and co2 emissions from northern lakes |
publisher |
Linköpings universitet, Tema Miljöförändring |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182234 https://doi.org/10.1029/2021AV000515 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
, 2021, 2:4, AGU Advances, 2576-604X, 2021, 2:4, orcid:0000-0003-0038-2152 http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182234 doi:10.1029/2021AV000515 ISI:000736630100004 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2021AV000515 |
container_title |
AGU Advances |
container_volume |
2 |
container_issue |
4 |
_version_ |
1766164804949508096 |