Analyse phytosociologique des formations de matorral du massif des Béni-Snasséne (Maroc Oriental)

Phytosociological analysis of Béni-Snassène shrubland (Morocco oriental). The study consists in defining the phytosociological units in which one line up the formings of the Béni-Snassène matorral, to specify their floristiques affinities with the groupings which their are close and their positions in the dynamic series of the region and finally to determine the climatic conditions and edaphic in which they develop. The methodology of approach used for that is known phytosociological or sigmatist. This one allowed the individualization of eight vegetable associations among which each is examined on the plans floristique, biogeographic, ecological and dynamic. These associations are arranged as follows: Classe of Quercetea ilicis with three associations integrated into the order of Pistacio-Rhamnetalia and the alliance of Asparago-Rhamnion; Classe of the Cisto-Lavanduletea with a single association belonging to the order of Halimietalia-riphaeo atlantici; Classe of the Rosmarinetea with four associations being attached to the order of Cisto mauritanici-Thymetalia munbyani

Richesse et diversité floristique de la suberaie de la Mamora (Maroc).

RÉSUMÉ. Richesse et diversité floristique de la suberaie de la Mamora (Maroc). L’étude vise la quantification de la richesse et de la diversité floristique de l’écosystème à chêne - liège de la forêt de la Mamora sur la base de transects et relevés floristiques répartis selon un échantillonnage stratifié et systématique dans différentes formations végétales préalablement distinguées. Les résultats montrent que l’écosystème renferme 62 familles, 261 genres, 408 espèces, sous-espèces et variétés. 35 taxons sont très rares et 29 rares. 18 taxons sont endémiques, 1 très rare et endémique et 4 rares et endémiques. L’étude a, par ailleurs, permis de révéler la disparition totale de Erica arborea et E. scoparia de cet écosystème et de définir le spectre biologique de la région d’étude qui se caractérise par une nette dominance des thérophytes (50.5%).Mots clés. Quercus suber, richesse, diversité, Mamora, Maroc.ABSTRACT. Floristic richeness and diversity of the Mamora’s Cork Oak forest (Morocco.) The survey aims to quantify the floristic richeness and diversity of the Mamora’s forest oak-cork ecosystem on the basis of transects and floristic samples distributed according to a stratified and systematic sampling in the different plant formations previously distinguished. The results show that the ecosystem contains 62 families, 261 genders, 408 species, subspecies and varieties : 35 very rare taxa , 29 rare taxa ; 18 endemic taxa, 1 very rare and endemic taxa and 4 rare and endemic taxa. The survey has, otherwise, permitted to reveal the total disappearance of Erica arborea and E. scoparia from this ecosystem and to define the biological spectrum of the studied region, wich is characterized with a clear dominance of therophytes (50.5%).Keys words. Quercus suber, richeness, diversity, Mamora, Morocco

Analyse phytosociologique des formations de matorral du massif des Béni-Snassène (Maroc oriental).

Phytosociological analysis of Béni-Snassène shrubland (Morocco oriental). The study consists in defining the phytosociological units in which one line up the formings of the Béni-Snassène matorral, to specify their floristiques affinities with the groupings which their are close and their positions in the dynamic series of the region and finally to determine the climatic conditions and edaphic in which they develop. The methodology of approach used for that is known &laqno;phytosociological» or &laqno;sigmatist». This one allowed the individualization of eight vegetable associations among which each is examined on the plans floristique, biogeographic, ecological and dynamic. These associations are arranged as follows: Classe of Quercetea ilicis with three associations integrated into the order of Pistacio-Rhamnetalia and the alliance of Asparago-Rhamnion; Classe of the Cisto-Lavanduletea with a single association belonging to the order of Halimietalia-riphaeo atlantici; Classe of the Rosmarinetea with four associations being attached to the order of Cisto mauritanici-Thymetalia munbyani

Analyse phytosociologique des formations de matorral du massif des Béni-Snassène (Maroc oriental).

Phytosociological analysis of Béni-Snassène shrubland (Morocco oriental). The study consists in defining the phytosociological units in which one line up the formings of the Béni-Snassène matorral, to specify their floristiques affinities with the groupings which their are close and their positions in the dynamic series of the region and finally to determine the climatic conditions and edaphic in which they develop. The methodology of approach used for that is known &laqno;phytosociological» or &laqno;sigmatist». This one allowed the individualization of eight vegetable associations among which each is examined on the plans floristique, biogeographic, ecological and dynamic. These associations are arranged as follows: Classe of Quercetea ilicis with three associations integrated into the order of Pistacio-Rhamnetalia and the alliance of Asparago-Rhamnion; Classe of the Cisto-Lavanduletea with a single association belonging to the order of Halimietalia-riphaeo atlantici; Classe of the Rosmarinetea with four associations being attached to the order of Cisto mauritanici-Thymetalia munbyani