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Báo cáo lâm nghiệp: "Radial-growth and wood anatomical changes in Abies alba infected by Melampsorella caryophyllacearum: a dendroecological assessment of fungal damage"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:"Radial-growth and wood anatomical changes in Abies alba infected by Melampsorella caryophyllacearum: a dendroecological assessment of fungal damage" | Ann. For. Sci. 63 2006 293- 300 INRA EDP Sciences 2006 DOI 10.1051 forest 2006008 293 Original article Radial-growth and wood anatomical changes in Abies alba infected by Melampsorella caryophyllacearum a dendroecological assessment of fungal damage Alejandro SOLLAa Ángela SÁNCHEZ-MIRANDAa Jesús Julio CAMAREROb a Biología y Producción de los Vegetales Ingeniería Técnica Forestal Universidad de Extremadura Avenida Virgen del Puerto 2 10600 Plasencia Spain b Unidad de Recursos Forestales Centro de Investigación y Tecnología Agroalimentaria Gobierno de Aragón Apdo. 727 50080 Zaragoza Spain Received 5 May 2005 accepted 18 August 2005 Abstract - The fungus Melampsorella caryophyllacearum causes serious damage on Abies alba. However radial-growth loss caused by the fungal infection has not been quantified before. In the Spanish Pyrenees three stands were sampled dasometry incidence intensity and cores were taken from asymptomatic and symptomatic trees for dendroecological analyses. Climate-growth correlations were assessed through correlation functions relating monthly mean temperature and total precipitation with radial growth. The incidence of the disease significantly increased with tree dominance. The maximum reduction of radial growth 20 in symptomatic trees was observed during 1983-2002 when xylem showed frequent traumatic resin ducts. During the year before growth the radial-growth loss was positively correlated to a wet December. In the year of tree-ring formation growth loss was negatively correlated with minimum temperatures in February March and April. The climatic effects on radial-growth of asymptomatic and symptomatic trees are discussed. dendroecology fungal infection silver fir tree-ring width Résumé - Croissance radiale et changements anatomiques du bois chez Abies alba infecte par Melampsorarella caryophyllacearum une evaluation dendrochronologique des dommages fongiques. Le champignon Melampsorarella caryophyllacearum cause de sérieux dommages chez .