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Interactive effects of abiotic factors and biotic agents on Scots pine dieback: A multivariate modeling approach in southeast France / Jean Lemaire in Forest ecology and management, vol 526 (December-15 2022)  

Public [article]  inForest ecology and management > vol 526 (December-15 2022) . - n° 120543 Titre : Interactive effects of abiotic factors and biotic agents on Scots pine dieback: A multivariate modeling approach in southeast France Type de document : Article/Communication Auteurs : Jean Lemaire, Auteur ; Michel Vennetier, Auteur ; Bernard Prévosto, Auteur ; et al., Auteur Année de publication : 2022 Article en page(s) : n° 120543 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bilan hydrique [Termes IGN] climat méditerranéen [Termes IGN] croissance des arbres [Termes IGN] dépérissement [Termes IGN] diagnostic foliaire [Termes IGN] facteur édaphique [Termes IGN] France (administrative) [Termes IGN] indice foliaire [Termes IGN] insecte nuisible [Termes IGN] Pinus sylvestris [Termes IGN] régression des moindres carrés partiels [Termes IGN] Viscum album [Vedettes matières IGN] Végétation et changement climatique Résumé : (auteur) Forest dieback is a high risk factor for the sustainability of these ecosystems in the climate change context. Productivity losses and increased defoliation and mortality rates have already been recorded for many tree species worldwide. However, dieback is a process that depends on complex interactions between many biotic and environmental factors acting at different scales, and is thus difficult to address and predict. Our aim was to build tree- and stand-level foliar deficit models integrating biotic and abiotic factors for Scots pine (Pinus sylvestris), a species particularly threatened in Europe, and especially in the southeastern part of France. To this end, we quantified foliar deficit in 1740 trees from 87 plots distributed along an environmental gradient. We also measured tree annual radial growth and the abundance of two parasites: the pine processionary moth (Thaumetopoea pityocampa Den. & Schiff.) and mistletoe (Viscum album L.). Topographic, soil, climate and water balance indices were assessed for each plot, together with the stand dendrometric characteristics. Given the large number of environmental factors and the strong correlations between many of them, models were developed using a partial least squares (PLS) regression approach. All the models pointed to a preponderance of the biotic factors (processionary moth and mistletoe) in explaining the intensity of foliar deficit at both tree- and stand- levels. We also show that strong interactions between climate, soil, water balance and biotic factors help to explain the intensity of dieback. Dieback was thus greater in the driest topoedaphic and climatic conditions where the mistletoe and processionary moth were present. This study highlights the need to account for a wide range of biotic and abiotic factors to explain the complex process of forest dieback, and especially the environmental variables that contribute to the water balance on the local scale. The phenomenological modeling approach presented here can be used in other regions and for other species, after a re-calibration and some adaptations to local constraints considering the limited distribution area of some biotic agents. Numéro de notice : A2022-825 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : 10.1016/j.foreco.2022.120543 Date de publication en ligne : 20/10/2022 En ligne : https://doi.org/10.1016/j.foreco.2022.120543 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102003 [article]

Impact of mistletoe attack (Viscum album ssp. abietis) on the radial growth of silver fir. A case study in the North of Eastern Carpathians / Catalina Barbu in Annals of forest research, vol 52 n° 1 (January 2009)    

Public [article]  inAnnals of forest research > vol 52 n° 1 (January 2009) . - p. 89-96 Titre : Impact of mistletoe attack (Viscum album ssp. abietis) on the radial growth of silver fir. A case study in the North of Eastern Carpathians Type de document : Article/Communication Auteurs : Catalina Barbu, Auteur Année de publication : 2009 Article en page(s) : p. 89-96 Note générale : Bibliogr. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Végétation [Termes IGN] Abies alba [Termes IGN] Carpates [Termes IGN] croissance des arbres [Termes IGN] Roumanie [Termes IGN] Viscum album Résumé : (Auteur) "Viscum album ssp. abietis (Wiesb.) Abrom L. is one of the three subspecies of Viscum album L that is frequently encountered in Romanian forests. The mistletoe has notoriously negative effects on trees and forests health. The mistletoe infections not only reduce both height and diameter growth, it can also cause partial or total die-back of the trees. The present study on the incidence of mistletoe (Viscum album ssp. abietis) on silver fir (Abies alba) increments was carried out in natural stands of the Forest District Gura Humorului (one permanent plot Păltinoasa and one experimental plot Voroneţ), because this location (400-1000 m elevation) is characteristic for pure silver fir stands that can be found on the border of Carpathians Mountains at the contact zone with Suceava plateau. Four classes describing the level of infection were distinguished: no infection, low, moderate and strong infection. As only a few of healthy trees (class 0) were found, the comparison was made on the trees from the 1st class of attack. In parasited silver trees development were distinguished 3 phases: i) phase 1 - from 1920 till 1945 when the trees that nowadays are falling into the 2nd and 3rd class had similar growth with the ones recorded in the 1st class; ii) phase 2 - from 1946 till 1976-1977; during this period the trees had been reducing their growth. The growth of silver fir trees that fall into the 2nd and 3rd classes of parasitism represents 80% of the average growth of 1st class trees; iii) phase 3 - from 1977 till 2007 (with a couple of episodes) when trees growths from 1st, 2nd and 3rd classes of parasitism were clearly differentiated." Numéro de notice : IFN_5775 Affiliation des auteurs : non IGN Thématique : FORET Nature : Article DOI : sans En ligne : http://www.editurasilvica.ro/afr/52/1/08_Barbu.pdf Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=73498 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
IFN-001-P000915	PER	Revue	Nogent-sur-Vernisson	Archives périodiques	Exclu du prêt

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