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Temporal trends in the foliar nutritional status of the French, Walloon and Luxembourg broad-leaved plots of forest monitoring / Mathieu Jonard in Annals of Forest Science, Vol 66 n° 4 (June 2009)
[article]
Titre : Temporal trends in the foliar nutritional status of the French, Walloon and Luxembourg broad-leaved plots of forest monitoring Titre original : Évolution du statut nutritionnel foliaire des placettes de feuillus des réseaux français, wallon et luxembourgeois de suivi des forêts Type de document : Article/Communication Auteurs : Mathieu Jonard, Auteur ; Frédéric André, Auteur ; Etienne Dambrine, Auteur ; Quentin Ponette, Auteur ; Erwin Ulrich, Auteur Année de publication : 2009 Article en page(s) : n° 412 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] diagnostic foliaire
[Termes IGN] écologie forestière
[Termes IGN] Fagus sylvatica
[Termes IGN] France (administrative)
[Termes IGN] Luxembourg
[Termes IGN] phosphore
[Termes IGN] Quercus pedunculata
[Termes IGN] Quercus sessiliflora
[Termes IGN] Wallonie (Belgique)
[Vedettes matières IGN] SylvicultureRésumé : (auteur) Two decades after the launching of the monitoring program of forest ecosystems in Europe (ICP forests), a unique data set is now available regarding the foliar nutritional status of the main broad-leaved species growing in much-diversified sites (soil, climate). This study focuses on the foliar concentration time series (1993 to 2005) of the French (RENECOFOR), Walloon and Luxemburg broad-leaved plots. The aim is to show long-term trends while taking the inter-plot and inter-annual variability into account. Two kinds of statistical processing were used to analyze the data on foliar chemistry: principal component analysis (PCAs) and linear mixed models. In general, the main temporal trends reveal a decrease in the foliar P concentration and a decrease in the foliar Ca concentration, except for European beech on acid soils. These temporal patterns confirm the trends previously observed and could be explained by the joint actions of several processes that influence tree nutrition in the long term: tree age, N and S deposition, harvesting and climate. Numéro de notice : A2009-700 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1051/forest/2009014 Date de publication en ligne : 06/05/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08249/f08249.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72246
in Annals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 412[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité IFN-001-P000405 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt Interactive responses of Quercus suber L. seedlings to light and mild water stress: effects on morphology and gas exchange traits / Jaime Puértolas in Annals of Forest Science, Vol 65 n° 6 (September 2008)
[article]
Titre : Interactive responses of Quercus suber L. seedlings to light and mild water stress: effects on morphology and gas exchange traits Titre original : Réponses interactives de semis de Quercus suber L. à la lumière et à un stress hydrique modéré : effets sur la morphologie et sur les caractéristiques des échanges gazeux Type de document : Article/Communication Auteurs : Jaime Puértolas, Auteur ; Marta Pardos, Auteur ; María Dolores Jiménez, Auteur ; Ismael Aranda, Auteur ; José Alberto Pardos, Auteur Année de publication : 2008 Article en page(s) : n° 611 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation
[Termes IGN] diagnostic foliaire
[Termes IGN] ombre
[Termes IGN] photosynthèse
[Termes IGN] Quercus suber
[Termes IGN] stress hydriqueRésumé : (auteur) The combined effect of water stress and light on seedlings of forest species is a key factor to determine the best silvicultural and afforestation practices in the Mediterranean area. The aims of this work was (1) to determine the optimal light level for the early development of cork oak seedlings under mild water stress and (2) to test if the combined effect of water stress and light followed the trade-off, the facilitation or the orthogonal hypothesis. Shade reduced instantaneous photosynthetic rates and water use efficiency in cork oak. However, seedlings grown under moderate shade (15% of full sunlight) were capable to accumulate similar amount of biomass than those grown under more illuminated environments by increasing their specific leaf area. Absolute differences in net photosynthesis between light treatments were higher in well watered than in water stressed seedlings. However, the impact of both factors on overall growth was orthogonal. We concluded that cork oak development is impaired under deep shade (5% of full sunlight) but it can be optimal under moderate shade (15% of full sunlight) even under moderate water stress. Implications of these patterns on regeneration, cultivation and afforestation of cork oak are discussed. Numéro de notice : A2008-698 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest:2008044 Date de publication en ligne : 04/09/2008 En ligne : https://www.afs-journal.org/articles/forest/abs/2008/06/f08038/f08038.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=70784
in Annals of Forest Science > Vol 65 n° 6 (September 2008) . - n° 611[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité IFN-DIR-P000123 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt