Circulación de nutrientes en algunos ecosistemas forestales del Montseny (Barcelona)

Ferrés, Lluís; Llanza, Ferran Rodà de; González, Antonio María Claret Verdú; Serra, Jaume Terradas

doi:10.14198/mdtrra1984.7.09

Cited by 22 publications

(9 citation statements)

References 15 publications

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“…Alternatively, it could have been due to some genetic effect of the different subspecies existing in the dehesa-like woodlands (Jiménez et al,1994 24,18,12,3 and 2 kg ha -1 year -1 of N, Ca, K, Mg and P (respectively), to which must be added 0.9, 0.3 and 0.2 kg ha -1 year -1 of Mn, Na and Fe (respectively). These values are similar to those reported by Gallardo et al (1992) and approximately half those found by Rapp (1971) and Ferrés et al (1984).…”

Section: Introductionsupporting

confidence: 93%

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Aboveground litter production and bioelement potential return in an evergreen oak (Quercus rotundifolia) woodland near Salamanca (Spain)

1996

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Section: Introductionsupporting

confidence: 93%

“…This fraction represents 11 % of the total, a figure similar to that recorded in the Montseny mountains oak grove (Ferrés et al, 1984).…”

Section: Introductionsupporting

confidence: 74%

Aboveground litter production and bioelement potential return in an evergreen oak (Quercus rotundifolia) woodland near Salamanca (Spain)

1996

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“…In addition, a relative index of retranslocation was calculated based on differences between nutrient concentrations of canopy leaves and leaf litterfall component in the main falling period (Ferres 1984;Ferres et al 1984), to compare nutrient remobilization of two sites. This method of estimating reabsorption of nutrients can overestimate nutrient withdrawals before abscission because nutrient leaching and changes in weight of leaves per unit area are not taken into account (Woodwell 1974).…”

Section: Methodsmentioning

confidence: 99%

Nutrient content and seasonal fluctuations in the leaf component of coark-oak (Quercus suber L.) litterfall

et al. 1996

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Nutrient content and seasonality of the leaf component in cork-oak litterfal were studied over a two year period in two cork-oak forest sites differing in biomass and edaphic condition in the north-eastern Iberian peninsula. Fallen senescent leaves compared to young leaves showed higher non-mobile nutrient concentrations and lower mobile nutrient concentrations, specially P, N, K, and Mg. At both sites, seasonal fluctuations affected both leaf production and leaf mineral content. The maximum leaf fall period correspond to the start of the vegetative growth and to the lowest N and P concentration in the falling leaves. The opposite was true for the winter, when litterfal was minimal and N and P content in falling leaves was at a maximum.The comparison between falling leaves and canopy leaves suggests that the analysis of fallen leaves can be a useful measure of N and P nutrition in cork-oak. We found site dependent differences in nutrient content and nutrient remobilization. In comparison with Q. ilex, although litter production was in the same range, nutrient retranslocation was greater for Q. suber.

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“…(Ferrés et al, 1984;Escarré et al, 1987;Avila and Rodà, 1988;Caritat and Terradas, 1990;Mayor, 1990;Rodà et al, 1990;Canadell and Rodà, 1991;Bonilla and Rodà, 1992; Mayor and Rodà, 1992 (1985-1988, 1988-1991, and 1985-1991) was determined from difference in diameter at both dates. Stem biomass (wood plus bark of the trunk and branches down to 5 cm in diameter) for each stem was estimated for each date through an allometric regression on dbh derived for this holm oak forest.…”

Section: Introductionmentioning

confidence: 99%

Growth response of holm oak (Quercus ilex L) to commercial thinning in the Montseny mountains (NE Spain)

Mayor

Roda

1993

Ann. For. Sci.

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Summary — Growth responses of holm oak (Quercus ilex) to commercial thinning were studied in the Montseny Biosphere Reserve (northeast Spain), where selection thinning for firewood production is currently the dominant form of management in holm oak forests. Thinning significantly increased mean stem diameter increment by 83% over that of unthinned plots during the 6-9-yr period after thinning, and by 48% from 9-12 yr after thinning. Absolute diameter increment was positively correlated with initial diameter at 1.30 m from the ground (dbh) both in thinned and unthinned plots. Thinning increased growth in large trees more than in smaller trees. Relative diameter growth was negatively correlated with initial dbh. It is concluded that individual holm oak stems in previously coppiced stands respond vigourously to thinning, and still do so 6-9 yr after thinning. The growth response diminishes 9-12 yr after thinning due to canopy closure. However, absolute rates of stand growth, as well as basal area and stem biomass increments, were unaffected by thinning during these time intervals, an example of density compensation.canopy closure I Quercus ilex = holm oak I selection thinning I stand growth / tree growth Résumé — Effet d'une éclaircie commerciale sur la croissance d'un chêne vert (Quercus ilex L) dans les montagnes du Montseny (NE de l'Espagne). L'effet d'une éclaircie commerciale sur la croissance du chêne vert (Quercus ilex) a été étudié dans la réserve de la Biosphère du Montseny (NE Espagne). Dans cette région, l'éclaircie sélective pour la production du bois de chauffage est la forme la plus commune de gestion des forêts. L'éclaircie a augmenté l'accroissement de diamètre des tiges de 83% par rapport aux placettes non éclaircies entre 6 et 9 ans et de 48% entre 9 et 12 ans après le traitement. L'accroissement absolu de diamètre est corrélé positivement avec le diamètre initial à 1,30 m. Les gros arbres ont davantage augmenté leur croissance que les petits. L'accroissement relatif en diamètre est corrélé négativement avec le diamètre initial à 1,30 m. On peut conclure que les tiges du chêne vert dans le taillis étudié ont une réponse vigoureuse à l'éclaircie et que cette réponse se prolonge encore 6 à 9 ans après. L'effet sur la croissance diminue 9 à 12 ans après l'éclaircie par suite de la fermeture du couvert végétal. Cependant, les taux absolus d'accroissement du peuplement, ainsi que la croissance de la surface terrière et de la biomasse des tiges, ne sont pas affectés par l'éclaircie pendant ces intervalles de temps, ce qui constitue un exemple de compensation de la densité. fermeture de la couverture végétale / Quercus ilex = chêne vert / éclaircie sélective / accroissement du peuplement / croissance des tiges INTRODUCTION

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Circulación de nutrientes en algunos ecosistemas forestales del Montseny (Barcelona)

Cited by 22 publications

References 15 publications

Aboveground litter production and bioelement potential return in an evergreen oak (Quercus rotundifolia) woodland near Salamanca (Spain)

Aboveground litter production and bioelement potential return in an evergreen oak (Quercus rotundifolia) woodland near Salamanca (Spain)

Nutrient content and seasonal fluctuations in the leaf component of coark-oak (Quercus suber L.) litterfall

Growth response of holm oak (Quercus ilex L) to commercial thinning in the Montseny mountains (NE Spain)

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