https://dspace.univ-ouargla.dz/jspui/handle/123456789/10535 2026-04-21T17:11:35Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/10565 Titre: COMPORTEMENTS PHYSIQUE ET HYDRIQUE DES SUBSTRATS DE CULTURE DESTINÉS AUX PÉPINIÈRES FORESTIÈRES MODERNES (SAHEL TUNISIEN) Auteur(s): M SADAK Y; EL AMRI A; MAJDOUB R; EL GHORBALI L Résumé: In Tunisia, the composted forestry waste is extensively used in containers, to manage the optimal conditions for plants growth aboveground in nurseries, in order to produce quality plants regularly and in sufficient quantity. This study aims to assess the physical and hydraulic characteristics of a number of cultivation substrates based on forestry compost derived from Acacia braking, considered as the current substrate for the production of forestry plants in containers. In this respect, a series of simple mechanical vibrating and rotating screening under various meshes was undertaken in two modern forest nurseries in the Tunisian Sahel; one is in Chott Mariem and the other in Bembla II. The physical analysis of untreated and screened composts has concerned the dry bulk density and the porosities (total, aeration and retention). The hydraulic analysis has involved the pF curve and the time of rewetting of each substrate. The main obtained results showed that the tested substrates are particularly aerated, but with low water availability. For the substrates with coarse particles, the water penetration is relatively short compared to the fine-textured substrates. The Substrates derived from the rotating sieving have shown a rewetting time lower than that of the substrates derived from the vibrating sieving. Furthermore, greater the sieve mesh is, lower is the rewetting time. The forestry compost produced in Chott Mariem is undeniable, regarding the total porosity and aeration under the experimental conditions, and has satisfied the standard water retention in the raw and screened states (regardless of the nature and the mesh screening), however the compost of Bembla II was not consistent and its screening is entirely justified. In addition, its rotating screening, whatever the used mesh, did not much improve the porosity retention. For the dry bulk density, the latter has no handicap for the use of tested substrates in containers. Description: Algerian Journal of Arid And Environment (AJAE) 2016-06-01T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/10564 Titre: SUR LA NATURE ET L’ORIGINE DE LA CROUTE GYPSEUSE DITE «DEB DEB» DANS LES PALMERAIS DE L’OUEST DES ZIBAN Auteur(s): ABDESSELAM Salah; TIMECHBACHE Mohamed Lakhdar Résumé: In the western area of Ziban, a hardpan crust called localy deb deb was developed. The works, who reported this crust, always showed confusion to its composition. After having reviewed the archive data relating to this formation, we show that it is a crust gypsum deposits at water table level. It was developed in sediment containing calcareous silt and quartz sand that are invaded by the gypsum, following evaporation of the water table, resulting in disintegration and dilution of the primary material. Description: Algerian Journal of Arid And Environment (AJAE) 2016-06-01T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/10562 Titre: EVALUATION DE L'ACTIVITÉ ANTI-INFLAMMATOIRE D’EXTRAITS AQUEUX DE FEUILLES Limoniastrum feei (PLUMBAGINACEA) Auteur(s): RAHMANI Smahia; BELBOUKHARI Nasser; SEKKOUM Khaled; CHERITI Abdelkrim Résumé: The objective of the study was to evaluate the antiinflammatory of the aqueous extract of the leaves of Limoniastrum feei in order to enhance its use in traditional medicine. The dose of 25mg / kg of the aqueous leaves extract significantly reduced the paw edema of mouse induced by formalin in a reduction of inflammation relative to diclofenac, of (85% and 95%) respectively Description: Algerian Journal of Arid And Environment (AJAE) 2016-06-01T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/10563 Titre: IMPACT DE LA PREDATION DE MANTODEA EN MILIEUX NATURELS ET CULTIVEES DE LA CUVETTE D’OUARGLA (SAHARA SEPTENTRIONAL EST-ALGERIEN) Auteur(s): KORICHI Raouf; DOUMANDJI Salaheddine; OULD EL HADJ Mohammed Didi Résumé: A census of the species of praying is done in the bowl Ouargla (northern Sahara) and a study of their feeding behavior. Nine species belonging to three distinct families are collected. The feeding activity of Mantodea is achieved by the excreta examination. In the field, the availability of potential prey is studied. Comparison of the diets of eight species of mantids shows their strong entomophagous. For Mantis religiosa, Diptera and Orthoptera frequent 35,7%, respectively, are the most ingested (H’ between 0 and 1,84 bit). As for Iris oratoria, 58,6% of its diet is composed by Orthoptera of which 63,6% are Acrididae. Diptera (20,6%) including Cyclorrhapha (17,1%) are also ingested (H’ fluctuates between 0,81 to 1,83 bit). Menu of Sphodromantis viridis indicates that Diptera, Orthoptera, Homoptera and Hymenoptera are consumed in equal parts (H = 2 bits). However, Elaea marchali pallida feeds Hymenoptera (66,7%), mainly Formicidae (55,6%) (H '= 0,81 to 1,76 bit). In addition, Amblythespis granulata eats mostly Hymenoptera (60%) (H '= 1,37 bit). By cons, it is mainly Orthoptera (66,7%) and Coleoptera (22,2%) that are consumed by Amblythespis lemoroi (H '= 1,58 to 2 bits). In addition, Empusa guttula swallows all of Heteroptera (50%) than Hymenoptera (50%). The diversity index of Shannon-Weaver is an estimated to 1 bit. In the menu of Blepharopsis mendica, Diptera (45,4%) are better represented, accompanied by Orthoptera (18,1%) and Hymenoptera (18,1%) (H '= 0,92 to 1,5 bit). In terms of eating behavior, the species studied are generalists. Description: Algerian Journal of Arid And Environment (AJAE) 2016-06-01T00:00:00Z