Effect of periodic defoliations by Thaumetopoea pityocampa Schiff. on radial growth in cedar woodland in Chréa, Algeria

Sbabdji, Mohamed; Lambs, Luc; Haddad, Ahmed Talib Hameed; Kadik, B.

doi:10.3406/revec.2015.1798

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…Similar results (1.5 ± 0.23 tents/tree) were found in Bordj-Bou-Arreridj region (Northeastern Algeria) (Ziouche et al 2017). A higher level of population density of T. pityocampa was observed in the National Park of Chrea (Northen Algeria) (5.3-15.2 tents/tree for the years 1991-2014) (Sebti and Chakali 2014;Sbabdji et al 2015). In several European countries, repeated outbreaks of T. pityocampa have been recorded (Arnaldo et al 2010;Sbabdji and Kadik 2011;Salman et al 2016;Bourougaaoui et al 2021b).…”

Section: Discussionmentioning

confidence: 99%

Ecological characteristics of pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) larval nests in pine and cedar forests of Algeria

BOUZAR-ESSAIDI,

RAHIM,

MEFTAHI

et al. 2023

Biodiversitas

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Abstract. Bouzar-Essaidi K, Rahim N, Meftahi B, Benfekih L. 2023. Ecological characteristics of pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) larval nests in pine and cedar forests of Algeria. Biodiversitas 24: 2107-2113. The pine processionary moth Thaumetopoea pityocampa) (Lepidoptera: Notodontidae) is one of the most serious pests of pine and cedar forests in Southern Europe and North Africa. In northern Algeria, outbreaks occur in the Aleppo pine (Pinus halepensis) forest, particularly in the semi-arid area and in the Atlas cedar forest (Cedrus atlantica) in the sub-humid elevation area. Under temperate and mountainous climates, the gregarious larvae of this winter-developing insect progressively build a large white, silky nest as a protective shelter during the winter period. We investigated the presence of nests and the environmental parameters (altitude, exposition) and their role in affecting the T. pityocampa density. Studies on nests of the pine processionary caterpillar were carried out in 2022 in two forest sites, namely Ghilas and El-Mroudj (NW Algeria). The mean (±SD) density of winter nests was higher in the cedar forest of El-Mroudj (1.22±0.26) than the Aleppo pine forest of Ghilas (1.62±0.60). The nest density differed with topographic orientation (F: 96.66, p<0.001). The nests of T. pityocampa caterpillars were directed mostly in the south side (the sunny part) of host trees, accounting for 48.5% and 43.5% of the total number of nests in El-Mroudj and Ghilas, respectively. At both sites, larval nest height was positively correlated with tree height (n = 126, P<0.001).

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Section: Discussionmentioning

confidence: 99%

Ecological characteristics of pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) larval nests in pine and cedar forests of Algeria

BOUZAR-ESSAIDI,

RAHIM,

MEFTAHI

et al. 2023

Biodiversitas

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“…The effects of a severe attack by Thaumetopoea pityocampa Schiff. on C. atlantica in Chreá National Park, Algeria were studied by Sbabdji et al (2015). They found that the infection resulted in up to a 50% growth decline after complete defoliation.…”

Section: Algeriamentioning

confidence: 99%

Dendrochronological studies in North Africa: reality and prospects

Farahat,

Gärtner

2024

Front. Ecol. Evol.

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The southern Mediterranean region, particularly North Africa, is a crucial area for biodiversity conservation. However, the impacts of climate change on plant species in this region are not well understood. Dendroecology, the study of tree rings, is a valuable technique for analyzing the effects of environmental changes on woody plants over time. In this study, we intend to assess the state of the art in dendrochronological research in North Africa and identify knowledge gaps and limitations in the field. The period of analysis spans from 1979 to 2023. We used all the available literature in Dendrobox and Google Scholar during this period. Our study revealed several research gaps in the region, including the need for more studies on the history of forest fires and their relationship to climate conditions in Morocco, Algeria, and Tunisia, the impact of climate on the anatomical characteristics of growth rings, and the effects of climate change on tree species diversity and forest health. Applying this technique in the future would allow for detailed insights into the effect of climate on the internal structure and growth of forest trees. The findings of this study will help guide future research and contribute to a better understanding of the climate-growth relationship of woody plants in North Africa.

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Decoding the interplay between tree traits, seed production, and cone-boring insect damage using advanced modeling to unveil the intricacies of Atlas cedar (Cedrus atlantica) forests

Abdelhamid,

Neffar,

Chenchouni

2023

Euro-Mediterr J Environ Integr

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Effect of periodic defoliations by Thaumetopoea pityocampa Schiff. on radial growth in cedar woodland in Chréa, Algeria

Cited by 5 publications

References 37 publications

Ecological characteristics of pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) larval nests in pine and cedar forests of Algeria

Ecological characteristics of pine processionary moth Thaumetopoea pityocampa (Lepidoptera: Notodontidae) larval nests in pine and cedar forests of Algeria

Dendrochronological studies in North Africa: reality and prospects

Decoding the interplay between tree traits, seed production, and cone-boring insect damage using advanced modeling to unveil the intricacies of Atlas cedar (Cedrus atlantica) forests

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