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A comparison of mortality rates between top height trees and average site trees / Daniel Mailly in Annals of Forest Science, Vol 66 n° 2 (march 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 2 (march 2009) . - n° 202 Titre : A comparison of mortality rates between top height trees and average site trees Titre original : Étude comparative des taux de mortalité entre les arbres dominants et les arbres indicateurs moyens de la station Type de document : Article/Communication Auteurs : Daniel Mailly, Auteur ; Mélanie Gaudreault, Auteur ; Geneviève Picher, Auteur ; Isabelle Auger, Auteur ; David Pothier, Auteur Année de publication : 2009 Article en page(s) : n° 202 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] arbre dominant [Termes IGN] dépérissement [Termes IGN] indicateur biologique [Termes IGN] mortalité [Termes IGN] Québec (Canada) Résumé : (auteur) Although comparisons between methods of selecting trees for site index estimates are well documented in the literature, little is known on mortality rates of different canopy tree cohorts used for that purpose. This study was initiated to test the hypothesis that the mortality rates of top height trees are lower than those of codominants only or a combination of codominant and dominant trees. To test this hypothesis, we used records from a network of permanent sample plots in Québec and studied the fate of different cohorts of site trees for five different species. Our results did not show clear evidence of lower mortality rates for top height trees. Instead we found that depending on the species, top height trees have lower (Populus tremuloides, Pinus banksiana), higher (Picea mariana, Abies balsamea) or equal mortality rates (Betula papyrifera) than codominant trees or codominant and dominant trees combined. These results suggest a tendency for shade intolerant species to maintain lower top height tree mortality rates over time when compared to shade tolerant species. In the latter case, it is also shown that spruce budworm epidemics (Choristoneura fumiferana) did not change the pattern of mortality rates of site trees of A. balsamea. Numéro de notice : A2009-713 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2008084 Date de publication en ligne : 28/02/2009 En ligne : https://doi.org/10.1051/forest/2008084 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=71942 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000317	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt