Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada
In this study, we investigated the links between peat carbon accumulation and past ecological and hydrological conditions in three peatlands (Bouleau, Mista, Auassat) which developed along a South-North transect within a watershed encompassing the boreal and subarctic domain in Eastern Canada. Peatl...
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crsagepubl:10.1177/0959683620988031 2024-06-23T07:57:00+00:00 Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada Primeau, Guillaume Garneau, Michelle Natural Sciences and Engineering Research Council of Canada 2021 http://dx.doi.org/10.1177/0959683620988031 http://journals.sagepub.com/doi/pdf/10.1177/0959683620988031 http://journals.sagepub.com/doi/full-xml/10.1177/0959683620988031 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 31, issue 5, page 858-869 ISSN 0959-6836 1477-0911 journal-article 2021 crsagepubl https://doi.org/10.1177/0959683620988031 2024-06-11T04:31:37Z In this study, we investigated the links between peat carbon accumulation and past ecological and hydrological conditions in three peatlands (Bouleau, Mista, Auassat) which developed along a South-North transect within a watershed encompassing the boreal and subarctic domain in Eastern Canada. Peatland development and long-term apparent rates of carbon accumulation (LORCA) were asynchronous in the watershed, suggesting an influence of both latitude and topography (altitude) on the length of the growing season (GGD 0 ). Results show that peat initiation within the three peatlands (respectively ca. 9070, 8400, and 6270 cal BP) was delayed after the deglaciation and that LORCA (respectively 35.5, 15.4, and 9.0 g C m −2 yr −1 ) decreased from South to North. Peatland development and fen to bog transitions were found to be almost synchronous for the two southernmost sites. The fen to bog transition in the northernmost subarctic site was delayed until the 20th century, owing to the less favorable climatic conditions. This suggests that recent warming has extended the length of the growing season and increased Sphagnum growth enough to potentially influence an ecosystem state-shift as observed in other Subarctic regions of eastern Canada. Article in Journal/Newspaper Subarctic SAGE Publications Canada The Holocene 31 5 858 869 |
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Open Polar |
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SAGE Publications |
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English |
description |
In this study, we investigated the links between peat carbon accumulation and past ecological and hydrological conditions in three peatlands (Bouleau, Mista, Auassat) which developed along a South-North transect within a watershed encompassing the boreal and subarctic domain in Eastern Canada. Peatland development and long-term apparent rates of carbon accumulation (LORCA) were asynchronous in the watershed, suggesting an influence of both latitude and topography (altitude) on the length of the growing season (GGD 0 ). Results show that peat initiation within the three peatlands (respectively ca. 9070, 8400, and 6270 cal BP) was delayed after the deglaciation and that LORCA (respectively 35.5, 15.4, and 9.0 g C m −2 yr −1 ) decreased from South to North. Peatland development and fen to bog transitions were found to be almost synchronous for the two southernmost sites. The fen to bog transition in the northernmost subarctic site was delayed until the 20th century, owing to the less favorable climatic conditions. This suggests that recent warming has extended the length of the growing season and increased Sphagnum growth enough to potentially influence an ecosystem state-shift as observed in other Subarctic regions of eastern Canada. |
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Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Primeau, Guillaume Garneau, Michelle |
spellingShingle |
Primeau, Guillaume Garneau, Michelle Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada |
author_facet |
Primeau, Guillaume Garneau, Michelle |
author_sort |
Primeau, Guillaume |
title |
Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada |
title_short |
Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada |
title_full |
Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada |
title_fullStr |
Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada |
title_full_unstemmed |
Carbon accumulation in peatlands along a boreal to subarctic transect in eastern Canada |
title_sort |
carbon accumulation in peatlands along a boreal to subarctic transect in eastern canada |
publisher |
SAGE Publications |
publishDate |
2021 |
url |
http://dx.doi.org/10.1177/0959683620988031 http://journals.sagepub.com/doi/pdf/10.1177/0959683620988031 http://journals.sagepub.com/doi/full-xml/10.1177/0959683620988031 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
The Holocene volume 31, issue 5, page 858-869 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683620988031 |
container_title |
The Holocene |
container_volume |
31 |
container_issue |
5 |
container_start_page |
858 |
op_container_end_page |
869 |
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1802650441802055680 |