Acute oak decline (AOD) new complex disese on holm oak (<i>Quercus ilex</i> L.) and possibilities of spread on other oak species in Croatia

Acorn production in Spanish holm oak woodlands

We present a review on the state-of-the-art of fruit prodution in Western Iberia woodlands («dehesas»), and particularly in Q. ilex (holm oak) «dehesas». This threatened ecosystem is of very high ecological and economical importance. Quercus sp. fruits (acorns) are essential for wildlife, and for pig fattening in «dehesas». In the first part of this review we briefly describe the phenology of t...

Effect of tree decline and slope aspect on the leaf morphological traits of Persian oak trees

This study was accomplished with the aim of investigating the effects of tree decline and slope aspect on leaf morphological traits and determining the indicator morphological traits that indicate the leaf diversity of Persian oak trees in relation to habitat conditions and environmental stresses in Mellah Siah forests of Ilam. Two forest habitats were selected on the northern and southern slop...

Sudden oak death syndrome fells 3 oak species

Taxonomy and identification of bacteria associated with acute oak decline

Acute oak decline (AOD) is a relatively newly described disorder affecting native oak species in Britain. Symptomatic trees are characterised by stem bleeds from vertical fissures, necrotic lesions in the live tissue beneath and larval galleries of the two spotted oak buprestid (Agrilus biguttatus). Several abiotic and biotic factors can be responsible for tree death, however the tissue necrosi...

A Review on Ecological Causes of Oak Decline Phenomenon in Forests of Iran

In this study, all the papers about oak decline phenomena in forests of Iran have been reviewed. One hundred and twelve papers from 51 journals were reviewed, and the information presented in each paper was analyzed and finally summarized. Eighty seven percent of the papers were about Brant’s oak (Quercus brantii Lindl.). Most of the studies were focused on the pest and desease of oak decline. ...