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Intra-annual tracheid production in balsam fir stems and the effect of meteorological variables

Deslauriers Annie et Morin Hubert. (2005). Intra-annual tracheid production in balsam fir stems and the effect of meteorological variables. Trees - Structure and Function, 19, (4), p. 402-408.

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URL officielle: http://dx.doi.org/doi:10.1007/s00468-004-0398-8

Résumé

Tracheid production of balsam fir in the Québec boreal forest (Canada) was studied by repeated cell analysis to investigate the influence of meteorological variables during the growing seasons 1998 to 2000. Wood micro-cores were extracted on a weekly basis throughout the growing season and sections were prepared in order to count the total number of cells produced. From the weekly cell number obtained, the rate of tracheid production was calculated and correlated with meteorological variables. The average total number of cells produced per year was reasonably uniform, increasing only from 36.6 in 1998, to 41.1 in 2000. However, different cell production rates were noted during the growing season. Regression analysis revealed that the cell production rate was largely dependent on minimum air and soil temperature during most of the cell production period. Mean and maximum temperature had less influence on cell production. Moreover, the influence of temperature was higher during earlywood production mainly from the end of May to mid-July. Lagging the weather data by 1-5 days decreased the relationship between temperature and cell production, showing the high correspondence with the same interval where cell production was measured. These results suggest a fast response of the cambium to temperature variation during tree-ring formation.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:09311890 (ISSN)
Volume:19
Numéro:4
Pages:p. 402-408
Version évaluée par les pairs:Oui
Date:2005
Sujets:Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Mots-clés:Abies balsamea, boreal forest, growing season, temperature, tracheid production
Informations complémentaires:The final publication is available at Springer via http://dx.doi.org/doi:10.1007/s00468-004-0398-8
Déposé le:19 janv. 2017 01:45
Dernière modification:19 janv. 2017 01:45
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