{"id":82101,"date":"2019-01-30T12:16:23","date_gmt":"2019-01-30T17:16:23","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/compositional-vegetation-changes-red-spruce\/"},"modified":"2019-01-30T12:16:23","modified_gmt":"2019-01-30T17:16:23","slug":"compositional-vegetation-changes-red-spruce","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/compositional-vegetation-changes-red-spruce\/","title":{"rendered":"Compositional vegetation changes and increased red spruce abundance during the Little Ice Age in a sugar maple forest of north-eastern North America"},"content":{"rendered":"\n<p>Published in <strong>Plant Ecology 213(6): 1027-1035 <a href=\"https:\/\/doi.org\/10.1007\/s11258-012-0062-0\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/doi.org\/10.1007\/s11258-012-0062-0<\/a><\/strong><\/p>\n<p>In north-eastern North America, the recent red spruce decline has been linked to atmospheric pollution, notably acid rain, although climate was also advocated as a potential factor. A high resolution lake sediment pollen stratigraphy was obtained to elucidate long-term trends in tree-species abundance in a sugar maple-yellow birch forest. The reconstructed history (~250-1996 A.D.) showed a steady increase of red spruce after 1300 A.D., with a peak between 1600 and 1900 A.D. followed by a strong decline in the last century, while sugar maple and yellow birch experienced an opposite trend. Red spruce abundance reached its apogee during the cool Little Ice Age (LIA) and decreased abruptly when annual temperature in the region increased by 2 \u00b0C in the last 125 years. American Beech was much more abundant in the forest before the LIA, typifying a sugar maple-American beech forest as the dominant forest type during the Late Holocene. Our results suggest that climate warming has played an important role in the current red spruce decline, the latter having been initiated well before acidic depositions reached deleterious potential effects on red spruce. Climate warming probably acted as a long-term predisposing factor that was aggravated by atmospheric pollution, in the last decades.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Plant Ecology 213(6): 1027-1035 https:\/\/doi.org\/10.1007\/s11258-012-0062-0 In north-eastern North America, the recent red spruce decline has been linked to atmospheric pollution, notably acid rain, although climate was also advocated as a potential factor. A high resolution lake sediment pollen stratigraphy was obtained to elucidate long-term trends in tree-species abundance in a sugar maple-yellow birch [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1183,1185,1180,1181],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1091],"class_list":["post-82101","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-ecosystems-and-environment","cptt_theme-forest-ecology","cptt_theme-forestry-research","cptt_theme-forests","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-d-houle"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Compositional vegetation changes and increased red spruce abundance during the Little Ice Age in a sugar maple forest of north-eastern North America - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"This study suggests that climate warming has played an important role in the current red spruce decline in north-eastern North America.\" \/>\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\/compositional-vegetation-changes-red-spruce\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Compositional vegetation changes and increased red spruce abundance during the Little Ice Age in a sugar maple forest of north-eastern North America - 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