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Cedar tree growth (Cedrus atlantica Manetti) in Chréa National Park, Algeria, and the influence of defoliation by the pine processionary caterpillar (Thaumetopoea pityocampa Sc hiff.)

Sbabdji , Mohamed and El Hadi, Oldache and Haddad, Ahmed and Kadik, Bachir and Lambs, Luc Cedar tree growth (Cedrus atlantica Manetti) in Chréa National Park, Algeria, and the influence of defoliation by the pine processionary caterpillar (Thaumetopoea pityocampa Sc hiff.). (2009) Revue d'Ecologie, vol.64 (n°4). pp.323-332. ISSN 0249-7395

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Abstract

Cedar tree is a mountain forest species that occurs naturally in the Maghreb region. This study describes the consequences of a strong attack of Thaumetopoea pityocampa Schiff. on century-old cedars in Chréa National Park, 50 km southwest of Algiers. Period of damage was assessed by nest census. After two consecutive defoliation events, maximum reduction in growth rate was recorded one year after the first defoliation. Up to 50 % of growth lost were calculated for a complete defoliation. A reduction in growth rate in subsequent years was lower due to trees undergoing recovery growth. These results could contribute to improved management of insect infestations and the protection of cedar plantations, and raise questions about the potential increase of insect attacks with climate change.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Agronomic National Institute (ALGERIA)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Abou Bekr Belkaid Tlemcen (ALGERIA)
Other partners > National Institute Forestry Research (ALGERIA)
Laboratory name:
Statistics:download
Deposited By:Florence Amor

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