CNR ISAFOM

Studio e analisi dei processi fisici, chimici e biologici che determinano il funzionamento e la dinamica degli agro-ecosistemi negli ambienti a clima mediterraneo, per il miglioramento quali-quantitativo delle produzioni, per l’ottimizzazione dell’uso delle risorse naturali, e per la valorizzazione delle funzioni dei sistemi agricoli e forestali. Sviluppo e applicazione di metodi di ricerca e di innovazioni tecnologiche avanzate per il monitoraggio e la previsione degli impatti e delle risposte degli ecosistemi agrari e forestali alle pressioni antropiche e climatiche.

L’ISAFOM afferisce al Dipartimento di Scienze Bio-Agroalimentari del CNR ed ha una "massa critica" di 89 unità ripartito tra le sedi di Portici - NA (sede centrale), Catania, Rende (CS), e Perugia.

 eLTER H2020 Project, Grant/Award Number: 654359; Italian Ministry of University and Research, Grant/Award Numbers: CNR DBA.AD003.139, CNR DTA.AD003.474; National Research Council of Italy, Department of Biology, Agriculture, and Food Secures, Grant/Award Number: 71951

The effects of short‐term extreme events on tree functioning and physiology are still rather elusive. European beech is one of the most sensitive species to late frost and water shortage. We investigated the intra‐annual C dynamics in stems under such conditions. Wood formation and stem CO2 efflux were monitored in a Mediterranean beech forest for 3 years (2015–2017), including a late frost (2016) and a summer drought (2017). The late frost reduced radial growth and, consequently, the amount of carbon fixed in the stem biomass by 80%.

Stem carbon dioxide efflux in 2016 was reduced by 25%, which can be attributed to the reduction of effluxes due to growth respiration. Counter to our expectations, we found no effects of the 2017 summer drought on radial growth and stem carbon efflux. The studied extreme weather events had various effects on tree growth. Even though late spring frost had a strong impact on beech radial growth in the current year, trees fully recovered in the following growing season, indicating high resilience of beech to this stressful event. 

By Ettore D'Andrea, Negar Rezaie, Peter Prislan, Jozica Gričar, Alessio Collalti, Jan Muhr, Giorgio Matteucci

LINK https://onlinelibrary.wiley.com/doi/10.1111/pce.13858?fbclid=IwAR0d4mcGJa9PJpQ2EfJcyAylEFQceOpg_kytfmX37duJwJzYH_aWGvtsSME

 


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