MUTINSUMU MUFENG Pierre Célestin*, TSHOMBE Van Emery, IRENGE Célestin, LENA Jean Louis, NGELESE MUKUWA Daniel

Mineral Composition of Sesamum Indicum Linné Seeds Sold and Consumed in Kinshasa

The mineral composition of Sesamum indicum L. seeds sold in Kinshasa, from Kwango, Kwamouth, Kwilu and Popokabaka, was determined by X-ray fluorescence spectrophotometry. Present study has established, by the extension of the t test, the relationship between origin, color and mineral content. Results showed that all samples, regardless of origin or color, are rich in macro-elements and trace elements.

Regardless of color and origin, sesame seeds from Kwango are rich in calcium (1.93±0.23g) sulfur (0.52±0.08g), copper (2.58±0.13mg), manganese (7.28±0.98mg), and bromine (0.29±0.10mg). Sesame seeds from Kwilu have high level of calcium (1.86±0.21mg), phosphorus (0.97±0.10g), potassium (8.79±0.97g), sulfur (0.52±0.6g). Sesame seeds from Kwamouth contain high level of chlorine (14.52±0.59g), iron (32.04±3.91mg), chromium (0.22±0.06mg), silicon (92.86±9.44mg), nickel (0,35±0.10mg), tin(1.37±0.28mg). Sesame seeds from Popokabaka are rich in chlorine (14.25±0,28g) like Kwamouth seeds, zinc (13.08±1.65mg) and strontium (8.99±0.92mg). Télécharger l'article

DJANYA OTSHUDI Benoit*, LUMUMBA TAMBWE Robert, PANYA WONGUDI Pascal, MPO DIAMBA Héritier

Systematic Inventory of the Ichtyofauna of the Lomami River and Method of Sampling at the Londeke Site

The purpose of this study was to investigate  the ichthyological fauna of the Lomami River in its part located in Londeke and to make an inventory of the fishing methods used by this population. Thus, the following methods were used: pre-survey, sampling, the survey itself. Results obtained showed that fishermen use 4 fishing gears (hooks, traps, nets and mosquito nets) and catched 20 species of fish (Heterotis niloticus, Parachanna obscura, Mormyrops zanclirostris, Tilapia guineensis, Barbus campacanthus, Xenocharax spirulus, Pareutropius debauwi, Hemichromis fasciatus, Clarias gariepinus, Distichodus antonii, Malapterurus diminnensis, Heterobronchus longifilis, Hemistichodus vaillanti, Ctenopoma kingslayae, Chrysischtys sp, Ctenopoma nigropannosum, Channallabes apus, Hepsetus odoe, Xenomystus nigri, Nannaethiops unitaeniatus) belonging to 12 families (Distichodontidae, Channidae, Osteoglossidae, Cichlidae, Schilbeidae, Mormyridae, Cyprinidae, Clariidae, Malapterudae, Notopteridae, Anabantidae, Hepsetidae), 19 orders (Heterotis, Parachanna, Mormyrops, Tilapia, Barbus, Xenocharax, Pareutropius, Hemichromis, Clarias, Malapterurus, Distichodus, Heterobronchus, Hemistichodus, Ctenopoma, Chrysischytys, Channallabes, Hepsetus, Xenomystus, Nannaethiops). The most captured species are: Heterotis niloticus, Heterobronchus longifilis, Parachanna obscura, Nannaethiops unitaeniatus. Télécharger l'article

 

MUNONGO IYABIDILA Marcellin*, TASI MBUANGI Jean-Paul, LUTETE SAVU Junior, LELE NYAMI Bonaventure

Local Perception of Drinking Water Supply in the Peri-urban area of Kinshasa in DR Congo: case of the Townships of Kimbanseke, Mont-Ngafula and Kisenso

The supply of driking water is a necessity and a challenge in peri-urban area of the city of Kinshasa.

The objective of this study was to assess the drinking water supply system in the peri-urban townships of Mont-Ngafula, Kimbanseke and Kinsenso in order to provide to water resource planners and managers reliable data to guide sustainable water resource projects.

Hence, simple random sampling was carried out through a questionnaire among 300 households in the studied area. The data was encoded in Ms Excel 2010 and exported to SPSS 20 for mutltivariate analysis and logistic regression.

The results show that there are three main sources of water supply: boreholes (65%), REGIDESO (25%) and wells (10%). The majority of water supply is provided by private or non-conventional services. The quality and quantity of drinking water is a problem, despite the fact that all the households surveyed have access to it. The main causes of the shortage are the distance of the inhabitants from the drinking water supply points, natural disasters and the lack of adequate infrastructure, the weakness of state institutions, population growth, and the absence of a water resources development policy. Télécharger l'article

ISUNGU WOSSAR Isabelle*, LUMANDE KASALI Joseph, MASENS DA-MUSA Bonaventure, LUBALEGA KIMBAMBA Tolérant, ETUMANGELE ASEKE Emile, GASIGWA SABIMANA Richard

Patron of natural regeneration under the cover of five seed trees in the Luki biosphere reserve

Five species of trees were monitored among the great plant diversity that abounds in the Luki Biosphere Reserve. This choice is justified by the need to use forest species with commercial value and those that fix nitrogen in the different silvicultural, apisylvicultural and agroforestry combinations for reforestation in the form of forest plantations. The five forest species chosen are: Prioria basalmifera (Vermoesen) Breteler; Piptadeniastrum africanum Hook.j; Lovoa trichiloides Harms; Pteleopsis hylodendron Mildbr; and Terminalia superba Engl. &Diels. The overall objective of this study is to evaluate the dynamics of the natural regeneration of the five forest species in the semi-deciduous forest formation of LUKI. For each species, three seed stems were selected from the mixed primary forest of the Reserve. 5 species x 3 trees/species x five circular inventory plots were established in progression at a distance of 5, 10, 15, 20 and 25 m in radius. 75 plots were inventoried between November 2016 and November 2019. It appears from the observations that these forest species have significant natural regeneration potential which could be valued in the improvements of natural forest stands by enrichment. The analysis of variance on the different dendrometric measurements carried out in the inventory plots revealed a significant effect. The test of the smallest significant difference made it possible to compare the means of dendrometric measurements using the R software. Simple linear regression made it possible to highlight the response of the density/ha according to the distribution of the seedlings under the seedman. Télécharger l'article

BRIKI MAYO Moïse*, LOMA FUNGA Dieudonné, LUBIKA LUEMBA Robert

Opportunities of Agroforestry in the Region of Luki Biosphere Reserve in Democratic Republic of Congo.

 A study was conducted on agroforestry practices at Biosphere Reserve of Luki (RBL) in Kongo Central province in the Democratic Republic of Congo.This studyaimed at analyzing the perceptions of people living in RBL  on the opportunities that presents the agroforestry in that region. A qualitative and quantitative survey completed by observations was made locally from 10 april to 15 may 2021 on 96persons (88 agroforest farmers and 8 ressource persons). Agroforestry practices at Luki are based on agrisylviculture, sylvopastoralism and agrisylvopastoralism systems. Among opportunities provided by agroforestry systems, there are income activities, diversity of incomes generating activities and the valorization of marginal lands and soils fertilizations .Present study revealed that the majority of the surveyed people agreed with the advantage of the diversification of incomes by the sale of agroforestry products (agriculture products, breeding, wood and other forest products). Télécharger l'article