Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw
Climate change and permafrost thaw are unlocking the vast storage of organic carbon held in northern frozen soils. Here, we evaluated the effects of thawing ice‐rich permafrost on dissolved organic matter (DOM) in freshwaters by optical analysis of 253 ponds across the circumpolar North. For a subse...
Published in: | Limnology and Oceanography Letters |
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Language: | Swedish English |
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2018
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Online Access: | https://pub.epsilon.slu.se/16086/ https://pub.epsilon.slu.se/16086/1/Wauthy_et_al_190513.pdf https://doi.org/10.1002/lol2.10063 |
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ftslunivuppsala:oai:pub.epsilon.slu.se:16086 2023-05-15T16:36:44+02:00 Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw Wauthy, Maxime Rautio, Milla Christoffersen, Kirsten S Forsström, Laura Laurion, Isabelle Mariash, Heather L. Peura, Sari Vincent, Warwick F. 2018 application/pdf https://pub.epsilon.slu.se/16086/ https://pub.epsilon.slu.se/16086/1/Wauthy_et_al_190513.pdf https://doi.org/10.1002/lol2.10063 sv eng swe eng https://pub.epsilon.slu.se/16086/1/Wauthy_et_al_190513.pdf Wauthy, Maxime and Rautio, Milla and Christoffersen, Kirsten S and Forsström, Laura and Laurion, Isabelle and Mariash, Heather L. and Peura, Sari and Vincent, Warwick F. (2018). Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw. Limnology and Oceanography Letters. 3 , 186-198 [Research article] cc_by_4 CC-BY Oceanography Hydrology Water Resources Other Earth and Related Environmental Sciences Research article PeerReviewed 2018 ftslunivuppsala https://doi.org/10.1002/lol2.10063 2022-01-09T19:14:49Z Climate change and permafrost thaw are unlocking the vast storage of organic carbon held in northern frozen soils. Here, we evaluated the effects of thawing ice‐rich permafrost on dissolved organic matter (DOM) in freshwaters by optical analysis of 253 ponds across the circumpolar North. For a subset of waters in subarctic Quebec, we also quantified the contribution of terrestrial sources to the DOM pool by stable isotopes. The optical measurements showed a higher proportion of terrestrial carbon and a lower algal contribution to DOM in waters affected by thawing permafrost. DOM composition was largely dominated (mean of 93%) by terrestrial substances at sites influenced by thawing permafrost, while the terrestrial influence was much less in waterbodies located on bedrock (36%) or with tundra soils unaffected by thermokarst processes (42%) in the catchment. Our results demonstrate a strong terrestrial imprint on freshwater ecosystems in degrading ice‐rich permafrost catchments, and the likely shift toward increasing dominance of land‐derived organic carbon in waters with ongoing permafrost thaw. Article in Journal/Newspaper Ice permafrost Subarctic Thermokarst Tundra Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive Limnology and Oceanography Letters 3 3 186 198 |
institution |
Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
op_collection_id |
ftslunivuppsala |
language |
Swedish English |
topic |
Oceanography Hydrology Water Resources Other Earth and Related Environmental Sciences |
spellingShingle |
Oceanography Hydrology Water Resources Other Earth and Related Environmental Sciences Wauthy, Maxime Rautio, Milla Christoffersen, Kirsten S Forsström, Laura Laurion, Isabelle Mariash, Heather L. Peura, Sari Vincent, Warwick F. Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
topic_facet |
Oceanography Hydrology Water Resources Other Earth and Related Environmental Sciences |
description |
Climate change and permafrost thaw are unlocking the vast storage of organic carbon held in northern frozen soils. Here, we evaluated the effects of thawing ice‐rich permafrost on dissolved organic matter (DOM) in freshwaters by optical analysis of 253 ponds across the circumpolar North. For a subset of waters in subarctic Quebec, we also quantified the contribution of terrestrial sources to the DOM pool by stable isotopes. The optical measurements showed a higher proportion of terrestrial carbon and a lower algal contribution to DOM in waters affected by thawing permafrost. DOM composition was largely dominated (mean of 93%) by terrestrial substances at sites influenced by thawing permafrost, while the terrestrial influence was much less in waterbodies located on bedrock (36%) or with tundra soils unaffected by thermokarst processes (42%) in the catchment. Our results demonstrate a strong terrestrial imprint on freshwater ecosystems in degrading ice‐rich permafrost catchments, and the likely shift toward increasing dominance of land‐derived organic carbon in waters with ongoing permafrost thaw. |
format |
Article in Journal/Newspaper |
author |
Wauthy, Maxime Rautio, Milla Christoffersen, Kirsten S Forsström, Laura Laurion, Isabelle Mariash, Heather L. Peura, Sari Vincent, Warwick F. |
author_facet |
Wauthy, Maxime Rautio, Milla Christoffersen, Kirsten S Forsström, Laura Laurion, Isabelle Mariash, Heather L. Peura, Sari Vincent, Warwick F. |
author_sort |
Wauthy, Maxime |
title |
Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
title_short |
Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
title_full |
Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
title_fullStr |
Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
title_full_unstemmed |
Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
title_sort |
increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw |
publishDate |
2018 |
url |
https://pub.epsilon.slu.se/16086/ https://pub.epsilon.slu.se/16086/1/Wauthy_et_al_190513.pdf https://doi.org/10.1002/lol2.10063 |
genre |
Ice permafrost Subarctic Thermokarst Tundra |
genre_facet |
Ice permafrost Subarctic Thermokarst Tundra |
op_relation |
https://pub.epsilon.slu.se/16086/1/Wauthy_et_al_190513.pdf Wauthy, Maxime and Rautio, Milla and Christoffersen, Kirsten S and Forsström, Laura and Laurion, Isabelle and Mariash, Heather L. and Peura, Sari and Vincent, Warwick F. (2018). Increasing dominance of terrigenous organic matter in circumpolar freshwaters due to permafrost thaw. Limnology and Oceanography Letters. 3 , 186-198 [Research article] |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/lol2.10063 |
container_title |
Limnology and Oceanography Letters |
container_volume |
3 |
container_issue |
3 |
container_start_page |
186 |
op_container_end_page |
198 |
_version_ |
1766027070125637632 |