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Modelling ozone fluxes to forests for risk assessment: status and prospects / Juha-Pekka Tuovinen in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 401 Titre : Modelling ozone fluxes to forests for risk assessment: status and prospects Titre original : Modélisation des flux d'ozone en forêts pour l'évaluation des risques : état et perspectives Type de document : Article/Communication Auteurs : Juha-Pekka Tuovinen, Auteur ; Juha-Pekka Tuovinen, Auteur ; Lisa Emberson, Auteur ; David Simpson, Auteur Année de publication : 2009 Article en page(s) : n° 401 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] effet de l'ozone sur les plantes [Termes IGN] forêt [Termes IGN] modèle mathématique [Termes IGN] ozone [Termes IGN] santé des forêts [Termes IGN] surveillance forestière Résumé : (auteur) Risk assessment of ozone effects on forests is gradually moving from concentration-based exposure metrics to a more complicated approach that requires modelling of ozone fluxes to trees. This study reviews the status of the DO3SE stomatal flux model employed within the Convention on Long-range Transboundary Air Pollution, describing a range of applications and identifying major research needs, especially in the context of support that could be provided by the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests. The most urgent development need for DO3SE is the modelling of the soil moisture status and its effect on stomatal conductance. Furthermore, the data related to the physical characteristics and the seasonal dynamics of physiological activity of vegetation continue to pose problems. There is a clear need for more extensive validation of models and risk estimates using more rigorous statistical procedures and comparisons with flux networks and satellites. The current large-scale forest monitoring activities provide only limited possibilities for flux modelling, but could be enhanced by introducing a new monitoring strategy outlined here. Numéro de notice : A2009-648 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2009024 Date de publication en ligne : 04/06/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08219/f08219.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72234 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Effects of atmospheric and climate change at the timberline of the Central European Alps / Gerhard Wieser in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 402 Titre : Effects of atmospheric and climate change at the timberline of the Central European Alps Titre original : Effets des changements atmosphériques et des changements climatiques à la limite supérieure de la forêt en Europe dans les Alpes centrales Type de document : Article/Communication Auteurs : Gerhard Wieser, Auteur ; Rainer Matyssek, Auteur ; Roland Luzian, Auteur ; Peter Zwerger, Auteur ; Peter Pindur, Auteur ; Walter Oberhuber, Auteur ; Andreas Gruber, Auteur Année de publication : 2009 Article en page(s) : n° 402 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Alpes centrales [Termes IGN] changement climatique [Termes IGN] croissance des arbres [Termes IGN] dioxyde de carbone [Termes IGN] écotone [Termes IGN] effet de l'ozone sur les plantes [Termes IGN] Larix decidua [Termes IGN] Pinus mugo subsp. uncinata [Termes IGN] surveillance hydrologique [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) This review considers potential effects of atmospheric change and climate warming within the timberline ecotone of the Central European Alps. After focusing on the impacts of ozone (O3) and rising atmospheric CO2 concentration, effects of climate warming on the carbon and water balance of timberline trees and forests will be outlined towards conclusions about changes in tree growth and treeline dynamics. Presently, ambient ground-level O3 concentrations do not exert crucial stress on adult conifers at the timberline of the Central European Alps. In response to elevated atmospheric CO2 Larix decidua showed growth increase, whereas no such response was found in Pinus uncinata . Overall climate warming appears as the factor responsible for the observed growth stimulation of timberline trees. Increased seedling re-establishment in the Central European Alps however, resulted from invasion into potential habitats rather than upward migration due to climate change, although seedlings will only reach tree size upon successful coupling with the atmosphere and thus loosing the beneficial microclimate of low stature vegetation. In conclusion, future climate extremes are more likely than the gradual temperature increase to control treeline dynamics in the Central European Alps. Numéro de notice : A2009-649 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2009023 Date de publication en ligne : 04/06/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08199/f08199.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72235 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

High resolution temporal variation in wood properties in irrigated and non-irrigated Eucalyptus globulus / David M. Drew in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 406 Titre : High resolution temporal variation in wood properties in irrigated and non-irrigated Eucalyptus globulus Titre original : Variations temporelles à haute résolution des propriétés du bois d'Eucalyptus globulus irrigués et non irrigués Type de document : Article/Communication Auteurs : David M. Drew, Auteur ; Geoffrey Downes, Auteur ; Anthony P. O'Grady, Auteur ; Jennifer Read, Auteur ; Dale Worledge, Auteur Année de publication : 2009 Article en page(s) : n° 406 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] croissance des arbres [Termes IGN] dendrométrie [Termes IGN] densité du bois [Termes IGN] Eucalyptus globulus [Termes IGN] qualité du bois [Termes IGN] Tasmanie [Vedettes matières IGN] Sylviculture Résumé : (auteur) Environmental determinants of wood properties variation were examined in Eucalyptus globulus, a globally important hardwood plantation species, in southern Tasmania, Australia. Radial variation in wood properties, measured with the SilviScan system, were re-scaled from distance to time abscissa using stem radial growth data measured with dendrometers. With this re-scaled data it was possible to evaluate how water availability and temperature affected wood density, microfibril angle (MFA) and fibre and vessel transverse dimensions in irrigated and non-irrigated trees. Wood density, fibre radial diameter and MFA were sensitive to water availability. Wood density increased and fibre radial diameter decreased in response to reduced water availability. When high water availability was maintained, wood density was negatively correlated with temperature. Together, temperature and soil matric potential explained about 60% of temporal variation in wood density variation. In contrast MFA was not related to temperature but decreased with increasing water stress. Slower growing trees also had lower MFA than faster growing trees. Slower growing trees had a larger number of vessels per unit area of wood than faster growing trees within this even aged stand. However, vessel radius to the 4th power was significantly higher in faster growing trees than in slower growing trees. Overall, E. globulus wood properties were sensitive to temporal changes in environmental conditions (particularly water availability) and associated growth rates. The data provided support for the hypothesis that growth rates are hydraulically mediated. Numéro de notice : A2009-654 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2009017 Date de publication en ligne : 04/06/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08354/f08354.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72239 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Diversity of water use efficiency among Quercus robur genotypes: contribution of related leaf traits / Magali Roussel in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 408 Titre : Diversity of water use efficiency among Quercus robur genotypes: contribution of related leaf traits Titre original : Diversité de l'efficience d'utilisation de l'eau entre différents génotypes de Quercus robur: contributions des traits foliaires Type de document : Article/Communication Auteurs : Magali Roussel, Auteur ; Didier Le Thiec, Auteur ; Pierre Montpied, Auteur ; Nathalie Ningre, Auteur ; Jean-Marc Guehl, Auteur ; Oliver Brendel, Auteur Année de publication : 2009 Article en page(s) : n° 408 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] génétique forestière [Termes IGN] isotope [Termes IGN] Quercus pedunculata [Vedettes matières IGN] Botanique Résumé : (auteur) Previously, a large intra-specific diversity and a tight genetic control have been shown for Δ13C (carbon isotope discrimination) in a pedunculate oak (Quercus robur L.) family, which is an estimator for intrinsic water use efficiency (Wi), a complex trait defined as the ratio of net CO2 assimilation rate (A) to stomatal conductance for water vapour (gs). In the present study, twelve genotypes with extreme phenotypic values of Δ13C were selected within this family to (i) asses the stability of genotype differences across contrasting environments and for different measures Wi; (ii) quantify the relationship between Δ13C and Wi within this family; (iii) identify which leaf traits drive the diversity in Wi observed in this family. Genetic variability of Δ13C and Wi was largely independent from different temporal integration scales and their correlation was found to be strong (R2 = 88% for leaf sugars) within this family. Weak correlations between measures of Wi with estimators of photosynthetic capacity, suggest a minor role of the latter in the diversity of Wi. However, the tight correlation between gs and Δ13C as well as Wi, and the related genotypic variation in stomatal density, suggest that the genotypic diversity in Wi within this pedunculate oak family might be due to differences in gs. Numéro de notice : A2009-656 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1051/forest/2009010 Date de publication en ligne : 06/05/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08120/f08120.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72242 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Tree mortality in a mixed deciduous forest in Northwestern Russia over 22 years / Igor Drobyshev in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 411 Titre : Tree mortality in a mixed deciduous forest in Northwestern Russia over 22 years Titre original : Mortalité des arbres dans une forêt feuillue mixte du nord-ouest de la Russie pendant 22 ans Type de document : Article/Communication Auteurs : Igor Drobyshev, Auteur ; Alexander Dobrovolsky, Auteur ; Vasiliy Neshataev, Auteur Année de publication : 2009 Article en page(s) : n° 411 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] arbre caducifolié [Termes IGN] dépérissement [Termes IGN] houppier [Termes IGN] inventaire forestier étranger (données) [Termes IGN] mortalité [Termes IGN] Russie [Vedettes matières IGN] Inventaire forestier Résumé : (auteur) We studied mortality rates of birch, small-leaved linden, pedunculate oak, Norway maple, black alder, common ash and Norway spruce, assessed through two inventories of 12664 trees in the unmanaged mixed deciduous forests of Oranienbaum Park, northwestern Russia, in 1981 and 2003. Our objectives were to evaluate if (a) long-term mortality rates vary among species, and if (b) crown condition, age and tree size affect the probability of mortality. Over this period, tree mortality rates in the park varied annually from 1 to 3% for healthy and moderately healthy trees, and from 3.9 to 9.3% for declining trees. The lowest mortality rates were observed for small-leaved linden and oak (0.8 and 1.0%, respectively), and the highest rate for birch (2.7%). We found (1) a significant and consistent association between tree condition and the probability of mortality, and (2) significantly higher mortality rates in smaller trees of ash, maple and oak. The effect of species-specific biology on mortality rates in the Oranienbaum Park was largely overridden by the “health status” and environmental conditions of the trees (e.g. degree of crown shading). The observed rates were similar to the estimates from natural temperate deciduous forests in both Europe and North America, indicating similar intensity of mortality in these ecosystems under natural conditions. Numéro de notice : A2009-659 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1051/forest/2009018 Date de publication en ligne : 06/05/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08143/f08143.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72245 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

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)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 412 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] Sylviculture Résumé : (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 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt

Combining forest structure data and fuel modelling to classify fire hazard in Portugal / Paulo M. Fernandes in Annals of Forest Science, Vol 66 n° 4 (June 2009)  

Public [article]  inAnnals of Forest Science > Vol 66 n° 4 (June 2009) . - n° 415 Titre : Combining forest structure data and fuel modelling to classify fire hazard in Portugal Titre original : Combinaison des données de structure forestière et de modélisation de la disponibilité en combustible pour classer les risques d'incendie de forêt au Portugal Type de document : Article/Communication Auteurs : Paulo M. Fernandes, Auteur Année de publication : 2009 Article en page(s) : n° 415 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Environnement [Termes IGN] combustible [Termes IGN] forêt méditerranéenne [Termes IGN] incendie de forêt [Termes IGN] lutte contre l'incendie [Termes IGN] modèle mathématique [Termes IGN] Portugal [Termes IGN] risque naturel Résumé : (auteur) Fire management activities can greatly benefit from the description of wildland fuel to assess fire hazard. A forest typology developed from the Portuguese National Forest Inventory that combines cover type (the dominant overstorey species) and forest structure defined as a combination of generic stand density (closed or open) and height (low or tall) is translated into fuel models. Fire behaviour simulations that accounted for the fire environment modification induced by stand structure resulted in an objective and quantitative assessment of fire hazard for 19 forest types. The range of fire risk is similar between and within cover types. Stand structure, rather than cover type, is the major determinant of fire vulnerability. This indicates a potentially prominent role of stand and fuel management in wildfire mitigation. Four fire hazard groups are defined: (1) open and tall forest types, and closed and tall Quercus suber and diverse forests; (2) closed, low woodlands of deciduous oaks, Q. suber and diverse forests, closed and tall Pinus pinaster woodland and tall Eucalyptus globulus plantations; (3) open and low forest types; (4) dense low stands of P. pinaster, E. globulus and Acacia. Potential fire risk increases from (1) to (4). Numéro de notice : A2009-703 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1051/forest/2009013 Date de publication en ligne : 06/05/2009 En ligne : https://www.afs-journal.org/articles/forest/full_html/2009/04/f08221/f08221.html Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=72249 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000405	PER	Revue	Nogent-sur-Vernisson	Salle périodiques	Exclu du prêt