Multiple Factors Associated with Oak Decline in Southern Italy. Sicoli, G., de Gioia , T., Luisi, N., & Lerario, P. Phytopathologia Mediterranea, 37(1):1–8, 1998.
abstract   bibtex   
Severe decline of oak trees has been observed in Italy in the last fifteen years and attributed to several biotic and abiotic causes. In order to assess the spread and the etiology of oak decline in southern Italy, investigations have been carried out in eight declining oak woods. Oak species affected, site and climatic conditions, plant water potential, anthropic factors (pasturing, silvicultural management, air pollution) and fungi associated to declining plants were evaluated. Quercus cerris L. and Q. frainetto Ten. were more susceptible to decline than Q. pubescens Willd. Highest values of water potentials occurred in susceptible Quercus species. Oak decline proved to be more serious where a prolonged drought had occurred. In several oak woods, susceptible Q. cerris and Q. frainetto tend to be gradually substituted by the more xerotollerant Q. pubescens. This alteration in oak species composition occurred more markedly in old and neglected coppice stands, characterized by overstocking, poor soil fertility, unfavourable exposure and over-pasturing. The following genera of fungi were frequently isolated from diseased oaks: Diplodia, Hypoxylon, Cylindrocarpon, Phoma, Ophiostoma/Ceratocystis, Armillaria, Phellinus. The results of this investigation indicated that oak decline can be controlled by silvicultural practices and careful management.
@article{sicoliMultipleFactorsAssociated1998,
  title = {Multiple Factors Associated with Oak Decline in Southern {{Italy}}},
  author = {Sicoli, G. and {de Gioia}, T. and Luisi, N. and Lerario, P.},
  year = {1998},
  volume = {37},
  pages = {1--8},
  issn = {0031-9465},
  abstract = {Severe decline of oak trees has been observed in Italy in the last fifteen years and attributed to several biotic and abiotic causes. In order to assess the spread and the etiology of oak decline in southern Italy, investigations have been carried out in eight declining oak woods. Oak species affected, site and climatic conditions, plant water potential, anthropic factors (pasturing, silvicultural management, air pollution) and fungi associated to declining plants were evaluated. Quercus cerris L. and Q. frainetto Ten. were more susceptible to decline than Q. pubescens Willd. Highest values of water potentials occurred in susceptible Quercus species. Oak decline proved to be more serious where a prolonged drought had occurred. In several oak woods, susceptible Q. cerris and Q. frainetto tend to be gradually substituted by the more xerotollerant Q. pubescens. This alteration in oak species composition occurred more markedly in old and neglected coppice stands, characterized by overstocking, poor soil fertility, unfavourable exposure and over-pasturing. The following genera of fungi were frequently isolated from diseased oaks: Diplodia, Hypoxylon, Cylindrocarpon, Phoma, Ophiostoma/Ceratocystis, Armillaria, Phellinus. The results of this investigation indicated that oak decline can be controlled by silvicultural practices and careful management.},
  journal = {Phytopathologia Mediterranea},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13799939,climate-change,forest-pests,forest-resources,oak-decline,quercus-spp},
  lccn = {INRMM-MiD:c-13799939},
  number = {1}
}

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