http://localhost:8080/xmlui/handle/123456789/4 Mon, 13 Apr 2026 15:26:46 GMT 2026-04-13T15:26:46Z http://localhost:8080/jspui/retrieve/61c99067-3a24-4814-9ac8-1fe55d966e11/Conference-Publications.jpg http://localhost:8080/xmlui/handle/123456789/4 http://localhost:8080/xmlui/handle/123456789/2356 Titre: Anthropogenic effect on the pace of shifts in climate regions extent and its impact on primary productivity Auteur(s): Zeroual, Ayoub; Alkama, Farida Résumé: Changes in precipitation and temperature, have been attributed to human influences, yet to what extent the anthropogenic forcing is reflected in the velocity on which background climate is evolving has not been assessed. Here we explore the contribution of natural and anthropogenic drivers to the pace of shifts in climate regions extent, a key indicator of the rate to which ecosystems have to adapt to a changing climatology. To this aim, multiple observational-based climate products and an ensemble of CMIP5 simulations have been combined to focus on the attribution of climate classification changes. Results support the conclusion that most of the observed changes over 1950–2005 can be attributed to human influence, prominently through warming effects induced by greenhouse gases. Projected emission scenarios are expected to induce an amplification of such trends up to twice the current rates by 2100 under the highest emission scenario RCP8.5. Future changes emerge particularly on tropical dry (expansion) and boreal moist (contraction) climates where the surface extents are already experiencing substantial changes over time. Changes in climate conditions, as quantified by shift in climate regions, have relevant impacts on vegetation primary productivity that appear generally overestimated by climate models compared to data-driven products. Wed, 01 Jan 2025 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/2356 2025-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/1612 Titre: Formulation d’aliments de complément à partir du soja et de deux écotypes de fonio Auteur(s): BALLOGOU, Vénérande Y.; DJIDOHOKPIN, M. Ella; MANFUL, John T. Résumé: This study aimed to evaluate nutritional qualities of complementary foods formulated from soyabean and two fonio landraces. Pédai and Namba fonio landraces have been chosen and associated to soyabean (Jupiter variety) for production of eight complementary flours with varied proportions of fonio (Pédai or Namba) and soyabean. Physico-chemical characteristics of the different flours were determined. Thus, the highest flour percentage is obtained with sieves 180 μm for the most of formulated complementary foods and colors varied according to added soya quantities. The results also showed significant differences (p≤0.05) in nutritional composition of the formulated flours. The lowest energy densities and protein, lipid and ash contents were obtained with flours having 90% of fonio and 10% of soyabean while the highest values were obtained with flours containing 60% of fonio and 40% of soyabean for the two landraces. Tue, 01 Jan 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/1612 2019-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/1611 Titre: Assessment of groundwater contamination by different interpolation methods for water resources management in the Mitidja Plain aquifer (North-Center Algeria) Auteur(s): Aziez, Ouahiba; Remini, Boualem; Habi, Mohammed Résumé: Due to a reported case of groundwater contamination, the present research is conducted to determine the degree of groundwater contamination present in the plain of Mitidja, North-Algeria. Selecting a suitable interpolation method to produce Piezometric maps consisting of averages sampled from 34 wells. Achieved by analyzing the effects of four spatial interpolation methods on groundwater contamination, including Empirical Bayesian Kriging (EBK), Inverse Distance Weighting (IDW), Ordinary Co-Kriging (OCK) and Ordinary Kriging (OK), with regard to the water quality index (WQI). These methods are widely used by applying numerical values to establish a range of groundwater quality data points and map the contaminated areas. They are crucial decision support tools used by managers to assess groundwater resource potential and for general management functions. The datasets used where collect from 14 aquifers across the plain of Mitidja. The evaluation is used to model the groundwater contamination areas, where the spatial uncertainty of the contaminated areas appears prominently between the transition level of one contaminated area to another. Also, cross-validation and various contaminated surface areas are used to assess the performance of each interpolation. The outcomes indicated that the performance differed slightly among different methods. The subtraction results showed a clear spatial difference amongst the contamination assessment results. Results of both the Ordinary Co-Kriging (OCK) and Empirical Bayesian Kriging (EBK) methods showed to have minor differences and the weakest RMSE values. The Inverse Distance Weighting (IDW) showed a healthy relationship between the weighting power of IDW and the groundwater contamination. Tue, 01 Jan 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/1611 2019-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/1610 Titre: Scenario modeling of the groundwater in a coastal aquifer (Jijel plain area, Algeria) Auteur(s): Boufekane, Abdelmadjid; Saibi, Hakim; Benlaoukli, Bachir Résumé: This study investigates the effect of drought and pumping discharge on groundwater supplies and seawater intrusion in the Jijel plain area (Algeria). The numerical model developed based on available hydrogeological data in real scale such as the calibration can be done only with real data. The groundwater model for the Jijel plain area was calibrated in two steps: (1) steady-state calibration to average conditions during 2012 and (2) calibration to transient conditions from 2012 to 2042 (30 years). The main objective is to quantify the components of the groundwater balance, to estimate the hydraulic conductivity distribution, and to control the encroachment of seawater into coastal aquifer systems. The impact of pumping discharge and drought on groundwater level evolution has been examined. As the population continues to grow and the demand for groundwater pumping intensifies beyond 2012, it can be expected that the actual extent of seawater intrusion and anthropogenic pollution in the future will be more severe than that predicted by the model. For example, the maximum drawdown value is recorded in the northwest of the study area (11.30 m). This drawdown is explained by the overexploitation, which causes the advancement of seawater in the northern region and anthropogenic pollution in the central region (next to cities). Better strategies for groundwater development and management, such as artificial recharge and modern irrigation systems, will be necessary to conserve freshwater aquifers and protect them from pollution. Tue, 01 Jan 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/1610 2019-01-01T00:00:00Z