Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape
International audience Abstract Lakes and ponds can be hotspots for CO 2 and CH 4 emissions, but Arctic studies remain scarce. Here we present diffusive and ebullition fluxes collected over several years from 30 ponds and 4 lakes formed on an organic‐rich polygonal tundra landscape. Water body morph...
Published in: | Limnology and Oceanography |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://hal.science/hal-04505252 https://hal.science/hal-04505252v1/document https://hal.science/hal-04505252v1/file/Limnology%20Oceanography%20-%202021%20-%20Pr%C4%97skienis%20-%20Seasonal%20patterns%20in%20greenhouse%20gas%20emissions%20from%20lakes%20and%20ponds%20in%20a%20High.pdf https://doi.org/10.1002/lno.11660 |
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ftuniparissaclay:oai:HAL:hal-04505252v1 2024-10-13T14:05:14+00:00 Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape Prėskienis, Vilmantas Laurion, Isabelle Bouchard, Frédéric Douglas, Peter Billett, Michael Fortier, Daniel Xu, Xiaomei Centre Eau Terre Environnement Québec (INRS - ETE) Institut National de la Recherche Scientifique Québec (INRS) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) McGill University = Université McGill Montréal, Canada University of Stirling Université de Montréal (UdeM) University of California (UC) 2021-01-20 https://hal.science/hal-04505252 https://hal.science/hal-04505252v1/document https://hal.science/hal-04505252v1/file/Limnology%20Oceanography%20-%202021%20-%20Pr%C4%97skienis%20-%20Seasonal%20patterns%20in%20greenhouse%20gas%20emissions%20from%20lakes%20and%20ponds%20in%20a%20High.pdf https://doi.org/10.1002/lno.11660 en eng HAL CCSD Association for the Sciences of Limnology and Oceanography info:eu-repo/semantics/altIdentifier/doi/10.1002/lno.11660 hal-04505252 https://hal.science/hal-04505252 https://hal.science/hal-04505252v1/document https://hal.science/hal-04505252v1/file/Limnology%20Oceanography%20-%202021%20-%20Pr%C4%97skienis%20-%20Seasonal%20patterns%20in%20greenhouse%20gas%20emissions%20from%20lakes%20and%20ponds%20in%20a%20High.pdf doi:10.1002/lno.11660 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.science/hal-04505252 Limnology and Oceanography, 2021, 66 (S1), pp.S117-S141. ⟨10.1002/lno.11660⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2021 ftuniparissaclay https://doi.org/10.1002/lno.11660 2024-09-20T00:21:16Z International audience Abstract Lakes and ponds can be hotspots for CO 2 and CH 4 emissions, but Arctic studies remain scarce. Here we present diffusive and ebullition fluxes collected over several years from 30 ponds and 4 lakes formed on an organic‐rich polygonal tundra landscape. Water body morphology strongly affects the mixing regime—and thus the seasonal patterns in gas emissions—with ice‐out and autumnal turnover periods identified as hot moments in most cases. The studied thermokarst lake maintained relatively high ebullition rates of millennia‐old CH 4 (up to 3405 14 C YBP). Larger and deeper kettle lakes maintained low fluxes of both gases (century to millennium‐old), slowly turning into a CO 2 sink over the summer. During winter, lakes accumulated CO 2 , which was emitted during the ice‐out period. Coalescent polygonal ponds, influenced by photosynthesizing benthic mats, were continuous CO 2 sinks, yet important CH 4 emitters (modern carbon). The highest fluxes were recorded from ice‐wedge trough ponds (up to 96 mmol CO 2 equivalent m −2 d −1 ). However, despite clear signs of permafrost carbon inputs via active shore erosion, these sheltered ponds emitted modern to century‐old greenhouse gases. As the ice‐free period lengthens, scenarios of warmer and wetter conditions could favor both the production of CO 2 and CH 4 from thawing permafrost carbon, and CH 4 production from recently fixed carbon through an atmospheric CO 2 ‐to‐CH 4 shunt at sites in which primary production is stimulated. This must be carefully considered at the landscape scale, recognizing that older carbon stocks can be mineralized efficiently in specific locations, such as in thermokarst lakes. Article in Journal/Newspaper Arctic Ice permafrost Thermokarst Tundra wedge* Archives ouvertes de Paris-Saclay Arctic Limnology and Oceanography 66 S1 |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Prėskienis, Vilmantas Laurion, Isabelle Bouchard, Frédéric Douglas, Peter Billett, Michael Fortier, Daniel Xu, Xiaomei Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Abstract Lakes and ponds can be hotspots for CO 2 and CH 4 emissions, but Arctic studies remain scarce. Here we present diffusive and ebullition fluxes collected over several years from 30 ponds and 4 lakes formed on an organic‐rich polygonal tundra landscape. Water body morphology strongly affects the mixing regime—and thus the seasonal patterns in gas emissions—with ice‐out and autumnal turnover periods identified as hot moments in most cases. The studied thermokarst lake maintained relatively high ebullition rates of millennia‐old CH 4 (up to 3405 14 C YBP). Larger and deeper kettle lakes maintained low fluxes of both gases (century to millennium‐old), slowly turning into a CO 2 sink over the summer. During winter, lakes accumulated CO 2 , which was emitted during the ice‐out period. Coalescent polygonal ponds, influenced by photosynthesizing benthic mats, were continuous CO 2 sinks, yet important CH 4 emitters (modern carbon). The highest fluxes were recorded from ice‐wedge trough ponds (up to 96 mmol CO 2 equivalent m −2 d −1 ). However, despite clear signs of permafrost carbon inputs via active shore erosion, these sheltered ponds emitted modern to century‐old greenhouse gases. As the ice‐free period lengthens, scenarios of warmer and wetter conditions could favor both the production of CO 2 and CH 4 from thawing permafrost carbon, and CH 4 production from recently fixed carbon through an atmospheric CO 2 ‐to‐CH 4 shunt at sites in which primary production is stimulated. This must be carefully considered at the landscape scale, recognizing that older carbon stocks can be mineralized efficiently in specific locations, such as in thermokarst lakes. |
author2 |
Centre Eau Terre Environnement Québec (INRS - ETE) Institut National de la Recherche Scientifique Québec (INRS) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) Géosciences Paris Saclay (GEOPS) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) McGill University = Université McGill Montréal, Canada University of Stirling Université de Montréal (UdeM) University of California (UC) |
format |
Article in Journal/Newspaper |
author |
Prėskienis, Vilmantas Laurion, Isabelle Bouchard, Frédéric Douglas, Peter Billett, Michael Fortier, Daniel Xu, Xiaomei |
author_facet |
Prėskienis, Vilmantas Laurion, Isabelle Bouchard, Frédéric Douglas, Peter Billett, Michael Fortier, Daniel Xu, Xiaomei |
author_sort |
Prėskienis, Vilmantas |
title |
Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape |
title_short |
Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape |
title_full |
Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape |
title_fullStr |
Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape |
title_full_unstemmed |
Seasonal patterns in greenhouse gas emissions from lakes and ponds in a High Arctic polygonal landscape |
title_sort |
seasonal patterns in greenhouse gas emissions from lakes and ponds in a high arctic polygonal landscape |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-04505252 https://hal.science/hal-04505252v1/document https://hal.science/hal-04505252v1/file/Limnology%20Oceanography%20-%202021%20-%20Pr%C4%97skienis%20-%20Seasonal%20patterns%20in%20greenhouse%20gas%20emissions%20from%20lakes%20and%20ponds%20in%20a%20High.pdf https://doi.org/10.1002/lno.11660 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice permafrost Thermokarst Tundra wedge* |
genre_facet |
Arctic Ice permafrost Thermokarst Tundra wedge* |
op_source |
ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.science/hal-04505252 Limnology and Oceanography, 2021, 66 (S1), pp.S117-S141. ⟨10.1002/lno.11660⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/lno.11660 hal-04505252 https://hal.science/hal-04505252 https://hal.science/hal-04505252v1/document https://hal.science/hal-04505252v1/file/Limnology%20Oceanography%20-%202021%20-%20Pr%C4%97skienis%20-%20Seasonal%20patterns%20in%20greenhouse%20gas%20emissions%20from%20lakes%20and%20ponds%20in%20a%20High.pdf doi:10.1002/lno.11660 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/lno.11660 |
container_title |
Limnology and Oceanography |
container_volume |
66 |
container_issue |
S1 |
_version_ |
1812811305696886784 |