{"id":82166,"date":"2019-01-30T12:15:53","date_gmt":"2019-01-30T17:15:53","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/does-trait-plasticity-boreal-nutrient\/"},"modified":"2019-01-30T12:15:53","modified_gmt":"2019-01-30T17:15:53","slug":"does-trait-plasticity-boreal-nutrient","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/does-trait-plasticity-boreal-nutrient\/","title":{"rendered":"Does trait plasticity of three boreal nutrient-conserving species relate to their competitive ability?"},"content":{"rendered":"\n<p>Published in <b>Ecoscience 18(4): 382-393. https:\/\/doi.org\/10.2980\/18-4-3432<\/b><\/p>\n<p>The present study investigates potential differences in trait plasticity as an additional contributing mechanism explaining ericaceous shrub dominance during different periods after logging. Two ericaceous species (<em>Kalmia angustifolia, Rhododendron groenlandicum<\/em>), and black spruce plants (<em>Picea mariana<\/em>), were submitted to combinations of 3 light levels and 2 levels of nitrogen addition during a simulated growing season of 9 weeks under greenhouse conditions. Plant traits related to light (photosynthesis, leaf mass per unit of area, leaf and aboveground biomass allocation, foliar N concentration) and nutrient acquisition (root mass ratio, specific absorption ratio, absorption of <sup>15<\/sup>N) were measured in response to the manipulation of these resources. The leaf mass per unit of area (LMA) of both ericaceous species was significantly reduced by shading; LMA of <em>Rhododendron <\/em>and <em>Kalmia <\/em>was, respectively, 54% and 31% higher in the highest light treatment. The LMA of black spruce was unchanged in response to light level. There were few differences among species in trait response to N addition. Black spruce was characterized by higher nutrient absorption rate and specific absorption rate at higher N levels compared to the 2 ericads. With the exception of LMA, plasticity to light was higher for <em>Kalmia<\/em&gt;; in contrast, plasticity to N addition was higher for <em>Rhododendron <\/em>and black spruce. Finally, LMA appears to be a key trait explaining the competitive advantage of ericaceous species (especially <em>Rhododendron<\/em>) and potential encroachment on forested sites after disturbance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Published in Ecoscience 18(4): 382-393. https:\/\/doi.org\/10.2980\/18-4-3432 The present study investigates potential differences in trait plasticity as an additional contributing mechanism explaining ericaceous shrub dominance during different periods after logging. Two ericaceous species (Kalmia angustifolia, Rhododendron groenlandicum), and black spruce plants (Picea mariana), were submitted to combinations of 3 light levels and 2 levels of nitrogen [&hellip;]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1185,1180,1181,1182],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1090],"class_list":["post-82166","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_theme-silviculture","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-hebert-francois-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Does trait plasticity of three boreal nutrient-conserving species relate to their competitive ability? - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"The present study investigates potential differences in trait plasticity as an additional contributing mechanism.\" \/>\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\/does-trait-plasticity-boreal-nutrient\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Does trait plasticity of three boreal nutrient-conserving species relate to their competitive ability? 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