Susceptibility of Fire-damaged Pine trees (Pinus pinaster and Pinus nigra) to Attacks by Ips sexdentatus and Tomicus piniperda (Coleoptera: Scolytidae)
Fernandez Fernandez, Mercedes M.; Salgado Costas, Jose Maria
During 1997 and the spring of 1998, a study to observe the colonization of burnt pine forests by bark beetles in the Castilla y Leon region was carried out. Ferreras de Abajo is a reforested area of 640 ha of Pinus pinaster Ait. burnt in VI 1996 and located in the province of Zamora. The second locality: Rioseco de Tapia belongs to the province of Leon, with 234 ha of Pinus nigra Arn. burnt in V, 1996. In each locality a sampling area of 900 m2 was chosen and two kind of trees were marked: 12 red' trees, entirely burnt and 12 'yellow' trees, partly burnt. The main objective of this study was to find out the species of bark beetles that colonize burnt pine trees two consecutive years after a wild fire, the sequence and distribution of attacks, attack density, and the life cycles of the two most representative species.