Publications Internationales

Permanent URI for this collectionhttps://dspace.univ-boumerdes.dz/handle/123456789/13

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Subject: search.filters.subject.Conservation

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Now showing 1 - 7 of 7
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    Functional natural yogurt tablet based on mucilag okra fruit and flexseed powder as prebiotic
    (North University of Baia Mare, 2023) Djilali, Adiba Benahmed; Metahri, Mohammed Said; Benseddik, Abdelouahab; Arabi, Meriem; Reniffi, Tinhinane; Saada, Naima; Tonkin, Nacera; Allaf, Karim
    This research highlights the potential for preparing nutraceutical yogurt using okra fruit mucilage and flaxseed powder as prebiotics and the potential of probiotics (lactic bacteria) to be preserved in these prebiotics at ambient temperature. Four yogurt formulation tablets were prepared and characterized for physicochemical, biochemical, biological, and pharmacodynamic (swelling and release of bioactive substances) properties. The primary findings showed that the yogurt formulation tablets F1 based on okra fruit mucilage and flaxseed powder are rich in flavonoids and exhibit interesting activities including antioxidant activity with% of DPPH inhibition=77.263%, antibacterial and pharmacodynamic. Okra fruit mucilage and flaxseed powder are good a source of bioactive substances, which could be further used as a natural antioxidant and as a matrix for the preservation of probiotics.
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    Diversity of Odonates (Odonata, Anisoptera & Zygoptera) in the Theniet El Had national Park-North West of Algeria
    (Tarbiat Modares University, 2023) Mairif, Mohamed; Bendifallah, Leila; Doumandji, Salah Eddine
    The aim of this study is to make an inventory of the fauna of the Odonata in Theniet El Had National Park, which helps managers to make appropriate decisions for the conservation of these species. The site is entirely forested (Cedrus and Quercus species) with numerous intra-forest natural environments (clearings, grasslands, rocky habitats, springs, pools and ponds, etc.), this mosaic of habitats harbours a remarkable wealth of fauna and flora. Our study focused on the natural and artificial temporary forest ponds, scattered throughout the park, which are of biological and ecological interest for a very wide range of insects, most notably the hemimetabola. These are characterised by a larval stage that is quite different from the adult stage in terms of habitat and lifestyle, namely odonates, where the larvae are aquatic whereas the adults have an aerial life. The inventory of odonates was carried out through monthly surveys of 8 water bodies (7 forest ponds and one hill reservoir) during one year, from March 2017 to February 2018. This preliminary inventory allowed us to inspect 240 individuals of odonates belonging to 18 species i.e. 11 genera and 5 families. The species recorded at the end of this study are the subject of a cartographic representation showing their distribution at the local scale (in the park) and at the national scale
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    Monitoring threatened ungulates (Gazella cuvieri and Ammotragus lervia) in the semi-arid North African Nador Mountains
    (Verlag der Oesterreichischen Akademie der Wissenschaften, 2022) Bounaceur, Farid; Boualem, Aoued; Abdi, Abdelkader; Bissaad, Fatima Zohra; Kaddouri, Mohamed Amin; Djilal, Mohamed; Zenati, Azeddine; Belgarssa, Yahia; Aulagnier, Stéphane
    Cuvier’s gazelle (Gazella cuvieri) and aoudad (Ammotragus lervia) are listed as Vulnerable in the IUCN red list, and any population should be the subject of scientific attention. Both ungulates were monitored for a year in the Nador Mountains (western Algeria). This is the first record of aoudad in this part of Tiaret province. Both species are partly sympatric. However, the aoudad was sighted only in small numbers in the roughest valleys in the north. The gazelle population is larger, but with few juveniles. The future of these wild ungulates is therefore worrying, and new conservation measures are required, including protecting this area
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    Estimation of aboveground biomass in conserved areas of Stipa tenacissima L. stands in the high steppes of western Algeria by mean of the Landsat 8 imagery-based vegetation indices
    (Wiley, 2019) Benseghir, Louaï; Kadi‐Hanifi, Halima; Bachari, Nour El Islam
    The main aim of this paper was to evaluate the use of OLI spectral data as a tool to assess the steppe vegetation in a conservation context. The field sampling was conducted for two specific areas of treatment (a) an exclosure area and (b) a free grazing area. After testing several vegetation indices (VIs), the optimal results were obtained for the Normalised Difference Vegetation Index (NDVI)-based aboveground biomass model with r2 = 0.61 and r2 = 0.72 for total and perennial biomass, respectively. No difference between observed and predicted total and perennial biomass was found (p = 0.700 and p = 0.306, respectively). The comparison between the two treatments using the field sampling revealed a significant difference on total plant cover (p = 0.016) and total biomass (p = 0.005), with a plant cover of 50.6% and a biomass of 325.771 kg dry matter per hectare (kg DM ha−1) on average in grazed area and 66.9%, 1,407.869 kg DM ha−1 in exclosure. Finally, a concordance is noted between the results obtained by the NDVI-based biomass model and the field sampling-based biomass
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    Whole-genome sequencing of north African honey bee Apis mellifera intermissa to assess its beneficial traits: NGS of A. m. intermissa whole genome
    (Wiley, 2018) Haddad, Nizar Jamal; Adjlane, Noureddine; Saini, Deepti; Menon, Athul; Krishnamurthy, Venkatesh; Jonklaas, Devan; Tomkins, J. Paul; Loucif‐Ayad, Wahida; Horth, Lisa
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    Population structure of north african honey bees is influenced by both biological and anthropogenic factors
    (Springer, 2013) Chahbar, Nora; Muñoz, Irene; Dall’Olio, Raffaele; De la Rúa, Pilar; Serrano, José; Doumandji, Sallaheddine
    Honey bee diversity is under threat due to anthropogenic factors as the use of pesticides and the replacement of local colonies to recover from colony losses. To assess the effect of these activities on the genetic diversity and structure of North African honey bee colonies, we studied colonies from the north (Tellian) and the south (Saharan) regions in Algeria, by determining their mitochondrial haplotype and the variation of ten microsatellite loci. Particular haplotypes have been found with a high frequency in each region that may constitute subspecies-specific markers for Apis mellifera intermissa (haplotype A8 at the north) and A. m. sahariensis (haplotype A9 at the south). Moreover, the presence of the haplotype A8 in some Saharan colonies may reflect recent introductions of A. m. intermissa. Structure analysis suggests that a natural differentiation between honey bee populations from Saharan and Tellian regions still exists despite increased colony movements (migration, queen purchases, etc.) during the last decades. One apiary established for the conservation of A. m. sahariensis showed no indication of maternal introgression since all the colonies bear the same haplotype A9. Furthermore, Hardy–Weinberg equilibrium observed in this population indicates that this apiary is appropriate for conservation programs of A. m. sahariensis