Bilan et croissance des reboisements de cèdre de l’Atlas, &lt;i&gt;Cedrus atlantica&lt;/i&gt; (Endl.) Carrière, en Algérie : cas du Djurdjura et de l’Atlas blidéen

Rabhi, Khellaf; Akli, Amel; Djouhri, Ahlem; Yahi, Nassima; Boudedja, S; Messaoudene, M.

doi:10.19182/bft2018.337.a31627

Cited by 3 publications

(4 citation statements)

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“…La répartition de son aire naturelle est discontinue, en sept blocs, et liée essentiellement à l'orographie du Maghreb (Boudy, 1950). Les trois premiers blocs se situent dans l'Atlas algérien sur environ 33 000 ha (Rabhi et al, 2018). Les quatre autres blocs sont localisés principalement au niveau des chaînes de montagnes les plus emblématiques du Maroc : le Rif, le Moyen Atlas central et oriental et le Haut Atlas oriental (figure 1a), sur une surface estimée à 133 000 ha (figure 1b).…”

Section: Introductionunclassified

Modélisation de la distribution potentielle de Cedrus atlantica Manetti au Maroc et impacts du changement climatique

et al. 2020

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Le changement climatique constitue un grand défi à relever par les politiques publiques et les gestionnaires des espaces naturels. La compréhension de ses impacts sur les écosystèmes forestiers constitue un préalable nécessaire à toute réflexion visant leur conservation et le maintien des services écosystémiques qu’ils offrent. Cette étude s’est intéressée à la modélisation de la distribution potentielle de Cedrus atlantica Manetti, à l’identification des variables environnementales conditionnant sa distribution, et à la définition de l’étendue géographique des aires qui sont favorables à sa présence sous les conditions climatiques passées, actuelles et futures. Ce travail a été réalisé en se basant sur le principe d’entropie maximale. La cartographie des aires potentielles révèle la sensibilité du cèdre aux changements climatiques passés et suggère une grande étendue (quadruple de la surface d’occurrence actuelle de l’espèce) des zones bioclimatiquement adaptées au développement de cette espèce sous les conditions climatiques actuelles. Cependant, les distributions potentielles futures semblent être dépendantes de certains sites spécifiques et risquent d’être affectées négativement par le climat futur. Ces résultats mettent en évidence l’ampleur des régressions projetées des superficies du cèdre dans le futur, ce qui pourrait impacter considérablement les fonctions et services de cet écosystème et augmenter les risques d’extinction locale. Ils constituent par ailleurs un bon outil de prise de décision pour les gestionnaires du territoire quant à la conservation de ce précieux écosystème forestier, afin d’éviter toute extinction de ce foyer de biodiversité marocaine.

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Section: Introductionunclassified

Modélisation de la distribution potentielle de Cedrus atlantica Manetti au Maroc et impacts du changement climatique

et al. 2020

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“…In Algeria, we find it in central and eastern regions in different bioclimatic situations where the surface covered by cedar is very limited and disjointed (BENTOUATI, 2008). Its surface has further decreased (QUÉZEL, 1998), and Rabhi et al (2018) announce 33,000 hectares.…”

Section: Introductionmentioning

confidence: 99%

“…The Atlas cedar has always attracted great interest as an important species given its ecological importance and numerous forestry qualities, such as low flammability, production of high-quality wood, and resistance to climatic stress and drought (RABHI et al, 2018). Despite its significant ecological value, this species is subject to degradation.…”

Section: Introductionmentioning

confidence: 99%

Cedar vascular flora of Djebel Maadid. Floristic analysis – Conservation

Radjai,

Sarri,

Zedam

2023

Rev Agr Acad

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The study region belongs to Cedrus atlantica Manetti formation, which is a North Africa endemic species. It is situated at Djebel Maadid, southern Bordj-Bou-Arreridj province, Algeria. To preserve this community, a flora inventory is important. We adopted a systematic-subjective non-probability sampling method in 30 surveys. The results revealed 108 species distributed among 91 genera and belonging to 34 botanical families. The analysis, including similarity and detrended correspondence analysis, identified various groups of plants-samples that demonstrate different environmental states linked to distinct stationarity. The species richness in particular sites can play a local role in the in-situ conservation of plants and habitats and must be registered for an urgent awareness situation.

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“…Even though these Cedar plantations rarely had any thinning or pruning, they showed good climatic adaptation, reflected by a reasonable growth rate in many European regions. These are mainly located around the Mediterranean Basin, such Southern France, Italy, Bulgaria and Hungary (Brunetti et al, 2001;Rabhi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Repellent properties against four Ascomycota species and Reticulitermes flavipes of acetonic extractives from Cedrus atlantica sapwood to inner heartwood fractions

CANDELIER,

JAY-ALLEMAND,

DIJOUX

et al. 2023

Bois for. trop.

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Cedrus atlantica is a tree species present in the south of France which, in the context of climate change, could become a conservation priority in the coming years. This tree species is also of considerable ecological and socio-economic interest in the Mediterranean Basin area, where it is mainly recognized for its durable timber, and also for the potentially interesting chemical properties of its essential oil. Studies of its heartwood formation and the properties of its extractives are therefore of interest, although very few have been conducted so far. The radial distribution of water/acetone extractives within the Atlas cedar tree (bark, sapwood, transition wood, outer heartwood and inner heartwood) selected for this study was screened at different tree height levels. High-performance liquid chromatography (HPLC) analyses were performed, especially to characterize flavonoid compounds in these extractive fractions. The radial variation of the extractive composition obtained highlights the phenomenon of heartwood formation. Assumptions were put forward as to the metabolic pathways involved in the heartwood formation process of cedar wood, based in particular on the occurrence and radial evolution of (-)-catechin, (+)-taxifolin and flavan compounds. The fungicidal and termite-repellent activities of the extracts were then tested. The water/acetone extractives from the Cedrus atlantica individual studied showed strong termite repellent activity and moderate antifungal activity against crop and fruit pathogens. Even though the sampling in this study was limited to a single tree, the results point to a potential for commercial use of Atlas cedar extractives as wood preservatives and/or as biocontrol products against pathogens of woody agricultural crops. Additional tests and chemical analyses will be carried out to confirm these interesting preliminary results.

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Bilan et croissance des reboisements de cèdre de l’Atlas, <i>Cedrus atlantica</i> (Endl.) Carrière, en Algérie : cas du Djurdjura et de l’Atlas blidéen

Cited by 3 publications

References 5 publications

Modélisation de la distribution potentielle de Cedrus atlantica Manetti au Maroc et impacts du changement climatique

Modélisation de la distribution potentielle de Cedrus atlantica Manetti au Maroc et impacts du changement climatique

Cedar vascular flora of Djebel Maadid. Floristic analysis – Conservation

Repellent properties against four Ascomycota species and Reticulitermes flavipes of acetonic extractives from Cedrus atlantica sapwood to inner heartwood fractions

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