Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:" Seed germination of Quercus robur, Q. pyrenaica and Q. ilex and the effects of smoke, heat, ash and charcoal" | Ann. For. Sci. 63 2006 205-212 INRA EDP Sciences 2006 DOI forest 2005112 205 Original article Seed germination of Quercus robur Q. pyrenaica and Q. ilex and the effects of smoke heat ash and charcoal Otilia Reyes Mercedes Casal Área de Ecoloxía Departamento de Bioloxía Fundamental Universidade de Santiago de Compostela Facultade de Bioloxía Campus Sur 15782 Santiago de Compostela Spain Received 21 February 2005 accepted 30 May 2005 Abstract - This study is centred on Quercus robur Q. pyrenaica and Q. ilex that have a distribution area covering all Europe. Fire is a frequent ecological factor in many ecosystems especially in those with Mediterranean climates. Our working hypothesis is that fire affects the germination process. An experiment was carried out testing the following treatments Control Smoke-5 min Smoke-10min Smoke-15 min 60 C-5 min 60 C-15 min 90 C-5 min 110 C-5 min 150 C-5 min Ash Ash Dilution and Charcoal. The seed incubation was spread over a year. The germination rates of the Control are very high especially in Q. ilex. Almost none of the treatments inhibit germination and only the Q. ilex seeds when subjected to 150 C-5 min show a marked inhibition. Q. robur and Q. pyrenaica take a year to complete their germination while Q. ilex only takes 22 weeks. Probably this reproductive behaviour is related to the climate characteristics to which the species have become adapted. Finally fire does not determine the germination process the recruitment of new individuals being independent of fire. Quercus germination fire reproductive strategies seeds Résumé - Germination de Quercus robur Q. pyrenaica et Q. ilex et effets de la fumee de la chaleur des cendres et des charbons. Cette étude est axée sur Quercus robur Q. pyrenaica et Q. ilex espèces qui sont représentées dans l ensemble de l Europe. Le feu est un facteur écologique frequent dans de nombreux écosystèmes spécialement ceux bénéficiant d un climat méditerranéen. Notre présupposé est que le feu .
