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Mediterranean shrubland growth responses to warming and drought conditions

Pellizzaro, Grazia and Cesaraccio, Carla and Sirca, Costantino Battista and De Dato, Giovanbattista Domenico (2004) Mediterranean shrubland growth responses to warming and drought conditions. In: 26th Conference on Agricultural and Forest Meteorology; 13th Joint Conf. on the Applications of Air Pollution Meteorology with the Air and Waste Management Association; 16th Conf. on Biometeorology and Aerobiology; 5th Symposium on the Urban Environment, 23-26 August 2004, Vancouver, Canada. Boston, American Meteorological Society. p. 449-452. Conference or Workshop Item.

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Abstract

Evergreen sclerophyll shrubland is a prominent feature of Mediterranean Basin. Elevated temperatures and extended drought period are predicted to have a large influence on the functioning of natural and semi-natural environments both directly and through interactions with land management and pollutant loading (Larcher, 2000; Llorens et al., 2003). Climatic changes may have particular strong effects on vulnerable ecosystems, which are already subjected to other stresses such as elevated N deposition, intensive grazing or the risk of fire (Sala et al., 1998). An experimental manipulation of climatic conditions at field scale was conducted employing a newly developed "night-time warming" technique and an automated covering system to extend summer drought (Beier et al., 2002). The objective of this study was to test how a future extended drought period and an increase in temperature could affect plant response in terms of plant cover and biomass, plant growth and reproductive effort. In this paper preliminary results obtained during the two first years of experiment (2002 and 2003) are shown.

Item Type:Conference or Workshop Item (Poster)
ID Code:2686
Status:Published
Uncontrolled Keywords:Climatic conditions, vulnerable ecosystems, plant growth, drought
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/03 Arboricoltura generale e coltivazioni arboree
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > CNR-Consiglio Nazionale delle Ricerche > Istituto di biometeorologia, Sassari
001 Università di Sassari > 01 Dipartimenti > Economia e sistemi arborei
Publisher:American Meteorological Society
Deposited On:18 Aug 2009 10:08

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