{"id":1462,"date":"2023-05-05T16:18:17","date_gmt":"2023-05-05T16:18:17","guid":{"rendered":"https:\/\/cpaleo.uqam.ca\/?p=1462"},"modified":"2025-06-10T19:51:38","modified_gmt":"2025-06-10T19:51:38","slug":"etude-des-bilans-de-carbone-dans-les-milieux-humides-naturels-et-perturbes-du-quebec-meridional","status":"publish","type":"post","link":"https:\/\/cpaleo.uqam.ca\/en\/etude-des-bilans-de-carbone-dans-les-milieux-humides-naturels-et-perturbes-du-quebec-meridional\/","title":{"rendered":"Study of carbon budgets in natural and disturbed wetlands in southern Qu\u00e9bec"},"content":{"rendered":"<div class=\"wp-block-cover alignfull is-light\" style=\"min-height:250px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"2272\" height=\"1704\" class=\"wp-block-cover__image-background wp-image-361\" alt=\"\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1.jpg\" style=\"object-position:53% 25%\" data-object-fit=\"cover\" data-object-position=\"53% 25%\" srcset=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1.jpg 2272w, https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1-300x225.jpg 300w, https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1-1024x768.jpg 1024w, https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1-768x576.jpg 768w, https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1-1536x1152.jpg 1536w, https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2022\/03\/Laforge7_Ours-1-2048x1536.jpg 2048w\" sizes=\"auto, (max-width: 2272px) 100vw, 2272px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-large-font-size\"><\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">Study of carbon budgets in natural and disturbed wetlands in southern Qu\u00e9bec | 2023 \u2013 2026<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"alignnormal\"><div id=\"metaslider-id-1747\" style=\"width: 100%; margin: 0 auto;\" class=\"ml-slider-3-108-0 metaslider metaslider-flex metaslider-1747 ml-slider has-dots-nav ms-theme-default\" role=\"region\" aria-label=\"mesure 1.13\" data-height=\"500\" data-width=\"800\">\n    <div id=\"metaslider_container_1747\">\n        <div id=\"metaslider_1747\" class=\"flexslider\">\n            <ul class='slides'>\n                <li style=\"display: block; width: 100%;\" class=\"slide-1748 ms-image\" aria-roledescription=\"slide\" data-date=\"2023-06-12 19:41:39\" data-filename=\"IMG_8262-min-1-scaled-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/IMG_8262-min-1-scaled-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-1748 msDefaultImage\" title=\"IMG_8262-min\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-1749 ms-image\" aria-roledescription=\"slide\" data-date=\"2023-06-12 19:41:39\" data-filename=\"IMG_8264-min-scaled-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/IMG_8264-min-scaled-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-1749 msDefaultImage\" title=\"IMG_8264-min\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-1750 ms-image\" aria-roledescription=\"slide\" data-date=\"2023-06-12 19:41:39\" data-filename=\"MicrosoftTeams-image-1-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/MicrosoftTeams-image-1-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-1750 msDefaultImage\" title=\"MicrosoftTeams-image (1)\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-1751 ms-image\" aria-roledescription=\"slide\" data-date=\"2023-06-12 19:41:39\" data-filename=\"MicrosoftTeams-image-2-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/MicrosoftTeams-image-2-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-1751 msDefaultImage\" title=\"MicrosoftTeams-image (2)\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2060 ms-image\" aria-roledescription=\"slide\" data-date=\"2024-07-25 17:43:52\" data-filename=\"MicrosoftTeams-image-600x375.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/MicrosoftTeams-image-600x375.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-2060 msDefaultImage\" title=\"MicrosoftTeams-image\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2062 ms-image\" aria-roledescription=\"slide\" data-date=\"2024-07-25 18:33:00\" data-filename=\"IMG_2195-scaled-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/IMG_2195-scaled-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-2062 msDefaultImage\" title=\"IMG_2195\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2064 ms-image\" aria-roledescription=\"slide\" data-date=\"2024-07-25 18:38:19\" data-filename=\"IMG_0939-min-scaled-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/IMG_0939-min-scaled-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-2064 msDefaultImage\" title=\"IMG_0939-min\" \/><\/li>\n                <li style=\"display: none; width: 100%;\" class=\"slide-2066 ms-image\" aria-roledescription=\"slide\" data-date=\"2024-07-25 18:39:22\" data-filename=\"IMG_5194-min-scaled-800x500.jpg\" data-slide-type=\"image\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cpaleo.uqam.ca\/wp-content\/uploads\/2024\/07\/IMG_5194-min-scaled-800x500.jpg\" height=\"500\" width=\"800\" alt=\"\" class=\"slider-1747 slide-2066 msDefaultImage\" title=\"IMG_5194-min\" \/><\/li>\n            <\/ul>\n        <\/div>\n        \n    <\/div>\n<\/div><\/div>\n\n\n\n<p>Study sites:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Natural and disturbed sites in 10 sub-regions of the St. Lawrence Lowlands<\/li>\n\n\n\n<li>2 Lake Saint-Pierre marshes<\/li>\n\n\n\n<li>2 open peatlands, 2 wooded peatlands at Lac-\u00e0-La-Tortue<\/li>\n\n\n\n<li>2 wooded swamps<\/li>\n<\/ul>\n\n\n\n<p>Person in charge: Michelle Garneau (UQAM)<\/p>\n\n\n\n<p>In collaboration with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gabriel Magnan (UQAM)<\/li>\n\n\n\n<li>\u00c9velyne Thiffault (ULaval)<\/li>\n\n\n\n<li>Alexandre Roy (UQTR)<\/li>\n\n\n\n<li>Paul Del Giorgio (UQAM)<\/li>\n\n\n\n<li>Sara Knox (McGill)<\/li>\n\n\n\n<li>Oliver Sonnentag (UdeM)<\/li>\n\n\n\n<li>Marc-Andr\u00e9 Bourgault (ULaval)<\/li>\n<\/ul>\n\n\n\n<p>Graduate students:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Joannie Beaulne (doctorate ULaval)<\/li>\n\n\n\n<li>Joanie Boulard (Master's degree, UQAM)<\/li>\n\n\n\n<li>Didier Philippo (Master's degree, UQAM)<\/li>\n<\/ul>\n\n\n\n<p>Professionals : <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Martina Schlaipfer (UQAM)<\/li>\n\n\n\n<li>David Trejo (UQAM) <\/li>\n\n\n\n<li>L\u00e9onie Perrier (UQAM)<\/li>\n\n\n\n<li>Olaf Kolle<\/li>\n\n\n\n<li>Jean-Benoit Leblond Chouinard (ULaval)<\/li>\n<\/ul>\n\n\n\n<p>     <a href=\"https:\/\/carbonique.ca\/\">Pour en savoir plus sur ce projet<\/a>          <\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>This project is part of action 1.13.1.1 of the MELCCFP's 2030 Plan for a Green Economy, which aims to acquire knowledge on the potential contribution of wetlands to limiting climate change. The project is divided into two focuses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Focus 1: Carbon sequestration in soils and biomass<\/li>\n\n\n\n<li>Focus 2: Atmospheric (CO2 and CH4) and aquatic (DOC) carbon fluxes<\/li>\n<\/ul>\n\n\n\n<p>Focus 1:<\/p>\n\n\n\n<p><em>1. C sequestration dynamics in soils and woody biomass of forested peatlands and wooded swamps<\/em><\/p>\n\n\n\n<p>The project assesses recent (last ~150 years) C sequestration stocks and rates in soil and woody biomass of forested peatlands, wooded swamps and forests. The potential impact of silvicultural activities on C sequestration in forested wetlands will be assessed by comparing natural and disturbed environments.<\/p>\n\n\n\n<p><em>2. Impacts of drainage and afforestation on C sequestration in a historical perspective<\/em><\/p>\n\n\n\n<p>C stocks and sequestration rates in peat and woody biomass will be compared between a natural open peatland and a forested peatland resulting from ancient drainage (&gt;50 years) to assess the extent to which afforestation and woody biomass accumulation can compensate for C losses in peat deposits due to lowering of the water table.<\/p>\n\n\n\n<p><em>3. C sequestration function of coastal marshes<\/em><\/p>\n\n\n\n<p>The C stock and sequestration rate will be estimated in the soil and plant biomass of a Lake Saint-Pierre marsh and a marsh disturbed by agricultural activities in order to assess the loss of C sequestration efficiency caused by drainage and the alteration of soil physico-chemical conditions due to agricultural fertilization.<\/p>\n\n\n\n<p>Focus 2 :<\/p>\n\n\n\n<p><em>1. Budget of GHG fluxes and COD lateral fluxes in natural and agriculturally impacted coastal marshes in the Lac Saint-Pierre basin<\/em><\/p>\n\n\n\n<p>This project aims to quantify the net ecosystem exchange of CO<sub>2<\/sub> and the emissions of CH<sub>4<\/sub> and of N<sub>2<\/sub>O in a natural marsh and a marsh disturbed by agricultural activities on the edge of Lake Saint-Pierre.<\/p>\n\n\n\n<p>In order to obtain a complete annual C assessment, lateral DOC fluxes will be measured within the different units of the natural and disturbed marsh.<\/p>\n\n\n\n<p>Finally, the annual GHG flux budget of the natural freshwater marsh will be compared with that of a natural saltwater marsh in the Bas-Saint-Laurent region, where data collected as part of a previous project during the 2020 and 2021 growing seasons (ecosystemic exchanges of CO<sub>2<\/sub> and of CH<sub>4<\/sub> and DOC lateral flow) will be analyzed.<\/p>\n\n\n\n<p><em>2. GHG flux budgets for forested wetlands disturbed by silvicultural activities<\/em><\/p>\n\n\n\n<p>The project will compare the C budgets of a natural wooded peatland and a wooded peatland that has been logged with organic soil protection (&lt;20 years). The results will enable us to assess how changes in the ecosystem&#039;s integrity as a result of logging affect atmospheric GHG exchanges.<\/p>\n\n\n\n<p>The project will compare the GHG budget of a natural wooded swamp with a wooded swamp affected by logging and recent soil disturbance (&lt;20 years).<\/p>\n\n\n\n<p><em>3. GHG flux budgets for a natural open peatland and a drained peatland affected by afforestation<\/em><\/p>\n\n\n\n<p>GHG fluxes will be measured in a natural open peatland and in a former open peatland affected by afforestation due to old drainage (&gt;50 years). This study will highlight the impact of drainage and afforestation on the annual C budget and the emissions of CO<sub>2<\/sub> and of CH<sub>4<\/sub>. This data will help determine whether drained peatlands can continue to act as net C sinks several decades after the disturbance.<\/p>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u00c9tude des bilans de carbone dans les milieux humides naturels&#8230;<\/p>","protected":false},"author":5,"featured_media":2056,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[1],"tags":[29,36,35,32,33,31],"class_list":["post-1462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-carbone","tag-flux-atmospheriques","tag-marais","tag-marecage","tag-tourbiere-boisee","tag-tourbiere-ombrotrophe"],"_links":{"self":[{"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/posts\/1462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/comments?post=1462"}],"version-history":[{"count":11,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/posts\/1462\/revisions"}],"predecessor-version":[{"id":2176,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/posts\/1462\/revisions\/2176"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/media\/2056"}],"wp:attachment":[{"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/media?parent=1462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/categories?post=1462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cpaleo.uqam.ca\/en\/wp-json\/wp\/v2\/tags?post=1462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}