Published in Forest@, Journal of Silviculture and Forest Ecology
The vulnerability of Mediterranean forests to extreme heat and drought events: the case of Holm oak (Quercus ilex L.) dieback in Italy.
Extreme heat waves coupled with severe drought episodes are increasing in frequency in the Mediterranean region. Such climatic events pose significant threats to evergreen sclerophyllous vegetation, despite their inherent resistance and adaptation to drought conditions. Over recent decades, several cases of dieback affecting Quercus ilex, Quercus suber, and other evergreen shrubs have been reported across the Mediterranean basin. In Italy, the first reports of Q. ilex dieback due to climatic events date back to 2012 in Tuscany, and with more extensive impacts observed following the extreme drought of 2017. During the summer of 2024, widespread dieback phenomena were reported across Southern Italian regions, including Apulia, Basilicata, and the islands of Sardinia and Sicily. The symptoms were consistent and recurrent in all the affected areas, characterized by partial or total foliar browning, followed by wilting and branch dieback. Notably, resprouting from dormant buds was observed in affected branches and leaves in the following rainy season. Affected areas showed ongoing symptoms of oak decline, often associated with the presence of Phytophthora spp. and other opportunistic pathogens, suggesting a complex interaction between biotic and abiotic stressors. This study aims to document and analyze the most relevant cases of Q. ilex dieback occurring in central and southern Italy, using also data collected through the SilvaCuore web application. The phenomenon of dieback and mortality of Q. ilex is still poorly understood in terms of the cause-and-effect relationships, the relative contribution of biotic and abiotic factors, the extension and severity of damage, and the ecological consequences. Although Mediterranean woodlands (forests and shrublands) are scarcely represented in the current scientific and monitoring programs (ICP Forests Level I network), the available results show an increase in dieback and mortality in Italy since 2012. We emphasize the urgent need for coordinated research efforts to study and map this phenomenon. Proposed actions include establishing a network of permanent monitoring plots that combine phytopathological and ecophysiological assessments over time, deploying comprehensive terrestrial and remote sensing monitoring techniques, and involving citizens in early detection efforts. Finally, the research should aim to identify the site-specific and management-related factors that have contributed to the extent and intensity of the dieback phenomenon. Understanding these drivers is critical for developing effective management strategies aimed at mitigating the impacts of these dieback events and enhancing the resilience of the most vulnerable forest stands.
Seddaiu S., Ruiu P.A., Piras G., Scanu B., Satta G.G.A., Lentini A., La Mela Veca D.S., Sidoti A., Castellaneta M., Colangelo M., Moretti N., Ripullone F., Tarasco E., Gravano E., Mocci E.M., Delle Donne A.G., Iacopetti G., Bettini D., Bussotti F., Pollastrini M. (2025). Vulnerabilità delle foreste mediterranee a eventi climatici estremi di ondate di calore e siccità: il caso del disseccamento del leccio (Quercus ilex L.) in Italia. Forest@ 22: 56-65.
L’Italia Forestale e Montana / Italian Journal of Forest and Mountain Environments is a scientific journal published by the Italian Academy of Forest Sciences (www.aisf.it) that addresses all aspects of forest and environmental sciences, with particular attention to Mediterranean and mountain environments.
On 24 October 2025, the workshop Italian Oak Forests in the Face of Stress Factors and Climate Change: Current Evidence, Ecophysiological Knowledge, and Management Perspectives was held in Florence at the Italian Academy of Forest Sciences.
The event, organized by the Italian Academy of Forest Sciences and the Italian Society of Silviculture and Forest Ecology (SISEF), under the patronage of the Council of the National Order of Agronomists and Foresters, examined the main critical issues threatening the conservation and functionality of Italian oak forests, with particular attention to the effects of climate change and environmental stress factors. The initiative brought together researchers, practitioners, and administrators to share up-to-date knowledge and to define adaptive management strategies.
Participation in the Italian Academy of Forest Sciences conference ‘Italian oak forests facing stress factors and climate change: current evidence, ecophysiological knowledge and management perspectives’
On Friday, 24 October 2025 in Florence, a conference entitled ‘Italian oak forests facing stress factors and climate change: current evidence, ecophysiological knowledge and management perspectives’ was held at the Italian Academy of Forest Sciences.
The scientific/educational event, organised by the Italian Academy of Forest Sciences and the Italian Society of Silviculture and Ecology (SISEF), aimed to explore the main critical issues threatening the conservation of oak forests in Italy as a result of stress factors and climate change.
Opened the proceedings with an introductory presentation entitled: “Stories and scenarios for oak forests”.
Discussed the vulnerability and decline of oak trees, describing the possible causes and mechanisms and presenting some of the results obtained during the work related to the Agritech project.
The event confirmed the fundamental role of collaboration between the scientific world, institutions and operators in the sector in promoting forestry policies capable of effectively and sustainably addressing the challenges caused by climate change.
Participation at EGU General Assembly 2025, held in Vienna
Prof. Francesco Ripullone of the University of Basilicata, was the main organizer of session BG3.12 “Climate-induced forest vulnerability and mortality: current knowledge and future research avenues”
The session, organized for several years now, has become a “fixture” for all researchers, from all parts of the world, working on forest vulnerability to climate change
The meeting offered interesting insights regarding the observation of declining forests from either the ground or remotely
Agritech Meeting - Spoke 7- which was held at the University Campus “Aldo Moro” of Bari.
The project's second-year progress was the focus of a recent meeting attended by Work Package (WP) and Task Leaders. Researchers from various academic and research institutions convened to review achievements, outline upcoming steps, and discuss practical applications of their findings. The meeting emphasized translating research results into tangible solutions, highlighting the project's commitment to producing actionable outcomes.
The University Campus of Matera recently hosted the "BALLAD FOR A TREE" event, focusing on the significance of monumental trees. These remarkable natural specimens are distinguished by several key characteristics:
Biological and ecological value:
Advanced age
Impressive size
Unique morphology
Rarity of species
Crucial habitat for various animal species
Cultural significance:
Historical importance
Religious relevance in specific regions
Close association with architectural landmarks
Landscape impact:
Aesthetic contribution to surroundings
Role in shaping local identity
Monumental trees serve as living monuments, embodying both natural heritage and cultural significance. Their presence enriches ecosystems, preserves biodiversity, and provides tangible links to a region's history and identity.
Participation at SISEF Congress - Italian Society of Silviculture and Forest Ecology "Forests for the future" held in Padua
The Italian Society of Silviculture and Forest Ecology (SISEF) recently held its National Congress in Padua under the theme "Forests for the Future." This prestigious event serves as a crucial platform for researchers and experts in the forestry sector to convene, exchange ideas, and engage in meaningful discussions.
The Congress brings together a diverse array of professionals dedicated to shaping a sustainable future for forests and society. Participants have the opportunity to:
Present cutting-edge research findings
Explore innovative forest management strategies
Discuss emerging challenges in silviculture and forest ecology
Network with colleagues from across Italy and beyond
Collaborate on developing solutions for sustainable forestry practices
By fostering dialogue and knowledge sharing, the SISEF Congress plays a vital role in advancing the field of forestry and promoting the long-term health and resilience of forest ecosystems. The insights and collaborations emerging from this event are instrumental in guiding policy decisions and management practices that will safeguard Italy's forests for generations to come.
A forest hike in the Regional Nature Reserve "Bosco Pantano" of Policoro was organized in collaboration with the Basilicata Section of ANISN (National Association of Natural Science Teachers). The event was tailored for natural science educators in the Basilicata Region.
The students were introduced to forest health monitoring, with a special focus on dendrochronological techniques.
They also acquired knowledge and insights on remote sensing and had an opportunity to learn about the wood technology world.
The teachers had the opportunity to visit our laboratories and learn more about our activities.
The sessions are organized in collaboration with ANISN (National Association of Natural Science Teachers) - Basilicata Section and addressed to natural science educators in the Basilicata Region.
Preliminary findings of dendrochronological, isotopic, and genetic characterization of sampled trees were presented.
In the afternoon, an exploration of the La Fagiana Reserve, with practical demonstrations, allowed for an explanation of the approaches employed.
Regional TV news interview on climate change and ecosystem vulnerability in Basilicata (Matera, June 2023)
App SilvaCuore, a tool for monitoring forest decline episodes, Workshop, May 6 2023, Rome.
First results of the Agritech Project: forest management and silviculture, Workshop, March 21, 2023, Potenza.