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Biodiversity, grazing, wildfires and management of Quercus suber forest in the mountain of Bitti-Buddusò (NE Sardinia)

Makdissi, Vernal (2016) Biodiversity, grazing, wildfires and management of Quercus suber forest in the mountain of Bitti-Buddusò (NE Sardinia). Doctoral Thesis.

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Abstract

Quercus suber species grows in a narrow region bordering the western Mediterranean. The importance of cork oak lies in the fact that cork material constitutes a valuable sustainable source of income. Nevertheless, anthropic activities have strongly affected these landscapes i.e. fires, overgrazing and inappropriate cork harvesting.
This thesis describes cork oak forest situation in the Mountain of Bitti-Buddusò, using data from five different floristic composition studies and the economical plan of silvo-pastoral goods of Buddusò, in addition to the phytosociological study that we conducted in 2015. Overall, 362 species were encountered with the dominance of therophytes (44.5%) followed by hemicryptophytes (32%), which presence indicates a high period of summer aridity and the inclusion of areas related to grazing. The chorological spectrum showed the prevalence of Steno and Euri-Mediterranean species (34.1 and 26.9%, respectively) revealing thus the Mediterranean character in which cork oak forests insure an optimum vegetative growth. Moreover, we gathered data from two wildfires that occurred between 2012 and 2014 to examine the post-fire tree responses. The most common response type was crown and basal resprouting (71.8%). Vulnerability to fire was higher in older and stripped trees. Additionally, stocking rate registered a lower density (0.62 heads/ha) than that observed 50 years earlier, which shows the importance of grazing management in multi-ownership lands.

Item Type:Doctoral Thesis
ID Code:11234
Contributors:Camarda, Ignazio
Publisher:Universita' degli studi di Sassari
Uncontrolled Keywords:Mediterranean, floristic composition, cork extraction, regeneration
Subjects:Area 05 - Scienze biologiche > BIO/01 Botanica generale
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
Cicli, scuole e corsi:Ciclo 28 > Scienze e biotecnologie dei sistemi agrari e forestali e delle produzioni alimentari > Monitoraggio e controllo degli ecosistemi forestali in ambiente mediterraneo
Deposited On:18 Apr 2016 17:35

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