A comparison of the ecology of pedunculate and sessile oaks: Radial growth in the centre and northwest of France

Levy, Gérard; Becker, Michel; Duhamel, D.

doi:10.1016/0378-1127(92)90091-m

Cited by 70 publications

(55 citation statements)

References 11 publications

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“…Our results were not consistent with other findings that are generally established on radial growth using a dendroclimatic analysis [19,53]. Indeed, different studies have shown that sessile oak annual radial increment is positively influenced by warm temperatures during the growing season or at the beginning of the summer [11,56,63] and also by precipitation accumulated over the growing season [9,11,52,63]. Water balance has been found to be a limiting factor for radial growth in sessile oak [19,53].…”

Section: Role Of Climatic Factors and Soil Water Deficitcontrasting

confidence: 99%

“…Young sessile oaks are less tolerant to waterlogging in the soil than pedunculate oaks; however, adult sessile oaks show a better growth in waterlogged soils that are frequently exposed to summer drought, because drought is a more limiting factor than watterlogging for pedunculate oaks [58]. Recent studies have been restricted to particular forests or small natural regions [20,46], except for one in north-western France which focused on radial growth [56]. Most of them have been carried out by students from the French Forest Engineering School (ENITEF) but have not been published in French or international journals.…”

Section: Introductionmentioning

confidence: 99%

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

Bergès¹,

Chevalier²,

Dumas³

et al. 2005

Ann. For. Sci.

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-The relationships between Q. petraea site index and site variables were studied using data from 99 even-aged high-forest stands located in north-western and north-eastern France. Stepwise multiple regressions using climate, topography and soil factors were adjusted and explain 49 to 60% of the variance in site index. This clearly demonstrates that an autecological study can be successfully performed over a large geographical area if an appropriate sampling strategy is applied. Moreover, the autecology of sessile oak was specified: (1) the role of soil water capacity, topographic position, log(Mg), log(S), K/P 2 O 5 , Mg/K and humus form was emphasized; (2) no regional differences in site index were observed, which was corroborated by few climatic effects; (3) models adjusted to each region were consistent; (4) nutrient factors explained a higher portion of variance of Q. petraea site index compared to climate/water-related factors, however the confounding effect was significant. site index / ecological factors / soil analyses / Quercus petraea (Mattus) Liebl. Résumé -Variations de l'indice de fertilité du chêne sessile (Quercus petraea Liebl.) en fonction du climat, de la topographie et du sol dans des futaies régulières adultes du nord de la France. Les relations entre l'indice de fertilité de Q. petraea et le milieu ont été étudiées dans 99 peuplements de futaies régulières adultes du centre-ouest et nord-est de la France. Des régressions multiples pas à pas basées sur le climat, la topographie et le sol expliquent de 49 à 60 % de la variance de l'indice de fertilité. Ce résultat indique clairement qu'une étude autécologique peut être menée avec succès sur un grand secteur géographique si une stratégie d'échantillonnage adaptée est appliquée. De plus, l'autécologie du chêne sessile est précisée : (1) nous soulignons le rôle de la réserve utile en eau du sol, de la position topographique, de log(Mg), log(S), K/P 2 O 5 , Mg/K et du type d'humus sur l'indice de fertilité ; (2) aucune différence inter-régionale n'est observée sur l'indice de fertilité, ce qui est corroboré par le faible effet du climat sur la croissance ; (3) les modèles prédictifs ajustés au niveau de chaque région sont très proches ; (4) la part de variance de l'indice de fertilité expliquée par le niveau trophique est plus élevée que celle liée aux facteurs hydriques et climatiques, mais la part commune expliquée par ces trois facteurs est importante.indice de fertilité / facteurs écologiques / analyses de sol / Quercus petraea (Mattus) Liebl.

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Section: Role Of Climatic Factors and Soil Water Deficitcontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Bergès¹,

Chevalier²,

Dumas³

et al. 2005

Ann. For. Sci.

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“…An efficient identification of Quercus petraea and Q. robur is essential for foresters and scientists because these two interfertile and sympatric oak species display different ecological requirements [16]. Because of the large variability among individuals in morphological features, this identification may be difficult, in particular within mixed stands where the taxonomical status of trees is often uncertain.…”

Section: Introductionmentioning

confidence: 99%

Leaf morphology as species indicator in seedlings of Quercus robur L. and Q. petraea (Matt.) Liebl.: modulation by irradiance and growth flush

2004

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-Morphological description of leaves provides the most reliable criteria to discriminate between the two oak species Quercus petraea and Q. robur. However, most earlier studies only assessed leaf morphology of adult trees, whereas interspecific variations between seedlings were poorly documented. We studied variations of leaf morphology on two-year-old seedlings growing in a common garden experiment and exposed to different irradiance regimes. Morphological measurements were performed on leaves from each growth flush. Large interspecific differences were detected. The discrimination between the two species was slightly better with first flush leaves. Irradiance influenced leaf size, but did not affect the characters usually used to discriminate the two species, like relative petiole length or angle of auricle at the base of the lamina. A discriminant function, based on the two most discriminating traits (lamina pilosity density and angle of auricles at the lamina base), provided less than 0.5% leaf misclassification. It appeared that, contrary to what is generally accepted, species recognition of oak seedlings based on leaf morphology is possible. Moreover, this is true whatever the irradiance regime, and even slightly easier under light shade than in full sun. morphology / leaf / light / flush / oakRésumé -La morphologie foliaire comme indicateur spécifique chez les semis de Quercus robur L. et Q. petraea (Matt.) Liebl.: variation avec l'éclairement et l'unité de croissance. La discrimination taxonomique des espèces Quercus petraea et Q. robur est essentiellement basée sur l'examen des fructifications, souvent absentes, ou de la morphologie foliaire. Alors que l'ensemble des travaux sur le sujet concerne des arbres adultes, nous avons étudié les variations morphologiques foliaires de jeunes plants de Q. petraea et Q. robur croissant sous différents régimes d'éclairement. La morphologie des feuilles des différents flushs a été analysée durant la deuxième année de croissance des plants en pépinière. Une analyse factorielle des correspondances portant sur l'ensemble de l'échantillon et intégrant toutes les variables morphologiques aboutit à une discrimination interspécifique nette dans la majorité des cas. La discrimination apparaît cependant meilleure pour les feuilles de la première unité de croissance. Le régime d'éclairement a principalement affecté la taille des feuilles. Les variables usuelles permettant la discrimination morphologique entre Q. petraea et Q. robur n'ont pas été affectées par les différences d'éclairement. Une fonction discriminante a été construite avec les deux variables les plus discriminantes (densité de pilosité du limbe et angle des oreillettes), aboutissant à moins de 0.5 % d'erreur dans le classement des feuilles. Contrairement à une opinion répandue, la discrimination des espèces de chêne est possible dès le stade jeune plant. De plus, elle ne nécessite pas obligatoirement l'observation des seules feuilles développées en pleine lumière. Elle est même légèrement meilleure sou...

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“…However, much evidence points also to a decrease of calcium availability due to long-term soil eutrophisation in oak stands (Thimonnier et al, 1994;Lévy et al, 1995). Furthermore, ecological studies indicated a higher requirement in soil nutrients for Q roburthan for Q petraea, an other broad-leaved species (Lévy et al, 1992). An analysis of potential dysfunctions induced in Q roburseedlings by reduced Ca 2+ supply was therefore undertaken.…”

Section: Introductionmentioning

confidence: 99%

Effects of a calcium deficiency on stomatal conductance and photosynthetic activity of Quercus robur seedlings grown on nutrient solution

et al. 1996

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A comparison of the ecology of pedunculate and sessile oaks: Radial growth in the centre and northwest of France

Cited by 70 publications

References 11 publications

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

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

Leaf morphology as species indicator in seedlings of Quercus robur L. and Q. petraea (Matt.) Liebl.: modulation by irradiance and growth flush

Effects of a calcium deficiency on stomatal conductance and photosynthetic activity of Quercus robur seedlings grown on nutrient solution

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