{"id":82775,"date":"2019-03-05T11:33:44","date_gmt":"2019-03-05T16:33:44","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/spatiotemporal-evolution-paludification\/"},"modified":"2019-03-05T11:33:44","modified_gmt":"2019-03-05T16:33:44","slug":"spatiotemporal-evolution-paludification","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/spatiotemporal-evolution-paludification\/","title":{"rendered":"Spatiotemporal evolution of paludification associated with autogenic and allogenic factors in the black spruce\u2013moss boreal forest of Qu\u00e9bec, Canada"},"content":{"rendered":"\n

Published in Quaternary Research: 91(2): 650-664 https:\/\/doi.org\/10.1017\/qua.2018.101<\/a><\/strong><\/p>\n

Paludification is the most common process of peatland formation in boreal regions. In this study, we investigated the autogenic (e.g., topography) and allogenic (fire and climate) factors triggering paludification in different geomorphological contexts (glaciolacustrine silty-clayey and fluvioglacial deposits) within the Qu\u00e9bec black spruce (Picea mariana<\/em>)-moss boreal forest. Paleoecological analyses were conducted along three toposequences varying from a forest on mineral soil to forested and semi-open peatlands. Plant macrofossil and charcoal analyses were performed on basal peat sections (less than or equal to 50 cm) and thick forest humus (less than 40 cm) to reconstruct local vegetation dynamics and fire history involved in the paludification process. Results show that primary paludification started in small topographic depressions after land emergence ca. 8000 cal yr BP within rich fens. Lateral peatland expansion and secondary paludification into adjacent forests occurred between ca. 5100 and 2300 cal yr BP and resulted from low-severity fires during a climatic deterioration. Fires that reduced or eliminated entirely the organic layer promoted the establishment of Sphagnum in microdepressions. Paludification resulted in the decline of some coniferous species such as Abies balsamea<\/em>\u00a0and Pinus banksiana<\/em>. The paleoecological approach along toposequences allowed us to understand the spatiotemporal dynamics of paludification and its impacts on the vegetation dynamics over the Holocene.<\/p>\n","protected":false},"excerpt":{"rendered":"

Published in Quaternary Research: 91(2): 650-664 https:\/\/doi.org\/10.1017\/qua.2018.101 Paludification is the most common process of peatland formation in boreal regions. In this study, we investigated the autogenic (e.g., topography) and allogenic (fire and climate) factors triggering paludification in different geomorphological contexts (glaciolacustrine silty-clayey and fluvioglacial deposits) within the Qu\u00e9bec black spruce (Picea mariana)-moss boreal forest. Paleoecological […]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1185,1180,1181],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1087],"class_list":["post-82775","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-forest-ecology","cptt_theme-forestry-research","cptt_theme-forests","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-p-grondin"],"acf":[],"yoast_head":"\nSpatiotemporal evolution of paludification associated with autogenic and allogenic factors in the black spruce\u2013moss boreal forest of Qu\u00e9bec, Canada - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"We investigated autogenic and allogenic factors triggering paludification in different geomorphological contexts within Qu\u00e9bec boreal forest.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/spatiotemporal-evolution-paludification\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spatiotemporal evolution of paludification associated with autogenic and allogenic factors in the black spruce\u2013moss boreal forest of Qu\u00e9bec, Canada - 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