LUNG-ESCARMANT, Brigitte; BERT, Didier; CAPDEVIELLE, Xavier; LABBÉ, Thierry; LASNIER, Jean-Baptiste; SEGURA, Raphael; SAINT-JEAN, Gilles; MEREDIEU, Céline

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

LUNG-ESCARMANT, Brigitte
Biodiversité, Gènes & Communautés [BioGeCo]

BERT, Didier
Biodiversité, Gènes & Communautés [BioGeCo]

CAPDEVIELLE, Xavier
Biodiversité, Gènes & Communautés [BioGeCo]

Langue

Communication dans un congrès avec actes

Ce document a été publié dans

3. International Congress on Planted Forests "Vulnerability and Risk Management in Planted Forests", 2013-05-16, Cestas. 2013p. 24 p.

Résumé en anglais

Over the past 30 years, Heterobasidion root disease has increased its distribution and impact across in South-West France. This study describes a model for simulating the infection, spread and protective treatment impacts of Heterobasidion spp. in stands of Pinus pinaster (L.). The model includes two submodels; one for stand dynamics with a distance dependant tree growth model and one for disease dynamics: (i) level of air-borne spores and spore infection, (ii) stump and root colonization, (iii) vegetative transfer to tree roots, (iv) spread of disease in tree roots of healthy tree, and (vi) disease effect on tree growth and survival. Two specific processes were studied. First of all, the prediction of high risk season is based on air-borne survey in order to investigate climate impact. Another key point concerns growth losses in trees. For accurate impact assessment, diameter growth loss was investigated by analyzing annual growth increment of pairs of healthy trees vs. trees infected by H. annosum using dendrochronological techniques To illustrate the model, simulations were carried out with different levels of infected stumps as initial disease centers, use of stump treatment and impacts of site fertility on the rate of transfer of the disease. The model provides a means of incorporating the impact of root disease into forest planning.< Réduire

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Controlling and predicting the spread of Heterobasidion annosum in even-aged Pinus pinaster stands in South-West France

Langue

Ce document a été publié dans

Résumé en anglais

URI

Origine

Unités de recherche