Effects of ecological factors on radial growth and wood density components of sessile oak (Quercus petraea Liebl.) in Northern France

2008 ◽  
Vol 255 (3-4) ◽  
pp. 567-579 ◽  
Author(s):  
Laurent Bergès ◽  
Gérard Nepveu ◽  
Alain Franc
Keyword(s):  
Wood Density ◽  
Radial Growth ◽  
Ecological Factors ◽  
Quercus Petraea ◽  
Sessile Oak ◽  
Northern France

scholarly journals Sessile oak (Quercus petraea Liebl.) site index variations in relation to climate, topography and soil in even-aged high-forest stands in northern France

2005 ◽  
Vol 62 (5) ◽  
pp. 391-402 ◽  
Author(s):  
Laurent Bergès ◽  
Richard Chevalier ◽  
Yann Dumas ◽  
Alain Franc ◽  
Jean-Michel Gilbert
Keyword(s):  
Site Index ◽  
Quercus Petraea ◽  
Forest Stands ◽  
Sessile Oak ◽  
Northern France

Influence de la densité du couvert forestier sur le développement architectural de jeunes chênes sessiles, Quercus petraea (Matt.) Liebl. (Fagaceae), en régénération forestière

2000 ◽  
Vol 78 (12) ◽  
pp. 1531-1544 ◽  
Author(s):  
Eric Nicolini ◽  
Daniel Barthélémy ◽  
Patrick Heuret
Keyword(s):  
Quercus Petraea ◽  
Growth Unit ◽  
Growth Morphology ◽  
Basal Diameter ◽  
Canopy Density ◽  
Sessile Oak ◽  
The North ◽  
Oak Trees ◽  
Branching Patterns ◽  
Number Of Branches

The growth and branching patterns of the main axis of 6-year-old sessile oak, growing in a natural regeneration in the north of France, were analysed each year retrospectively according to three increasing canopy density conditions: large gap, small gap, and dense canopy. Increasing gap size is associated with an increase in the total height, basal diameter, branching probability, and global polycyclism rate of the trees. At the growth unit or annual shoot level, from dense canopy to large gaps these botanical entities also show an increase in their total length, number of nodes, polycyclism, and branching rate as well as mean number of branches and mean internode length. A discussion of our results revealed some endogenous features of growth and branching patterns in young sessile oak trees. It is also shown that increasing canopy density generally tends to reduce the expression of the endogenous architectural sequence of differentiation of young sessile oak trees. Young trees growing below dense canopy thus seem to be "delayed" in their sequence of differentiation and appear to be in a "waiting" status, whereas young trees growing in large gaps exhibit an architecture very similar to trees growing in nurseries under nonlimiting growth conditions.Key words: architecture, Quercus petraea, growth, morphology, canopy density.

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