http://repository.pauwes-cop.net/handle/1/162 Thu, 30 Apr 2026 07:14:12 GMT 2026-04-30T07:14:12Z http://repository.pauwes-cop.net/handle/1/459 ASSESSMENT OF THE IMPACTS OF CLIMATE CHANGE ON LIVESTOCK WATER SOURCES AND LIVESTOCK PRODUCTION. “CASE STUDY, KARAMOJA REGION OF UGANDA’’ AUMA, Sandra The study examined the impact of climate change on livestock water sources and livestock production using the Karamoja region of Uganda as a case study. The study's objectives were to determine the general public's perception of climate change, to identify the major climatic factors affecting livestock productivity in Karamoja, and to assess the extent to which climate change has affected animal water sources and livestock productivity in the study region. A cross-sectional survey design, as well as a quantitative and qualitative approach, were used in the study. The study population was 258, and the sample size was 222, which was chosen specifically through a purposive and random sampling technique. While the general public was aware of and understands climate change, the study concluded that the likely causes of climate change were numerous, including deforestation, charcoal burning, natural events such as lake currents, carbon emissions, and land degradation. In Karamoja, climate change is causing erratic and uneven rainfall, drying of surface water bodies such as dams and rivers, high temperatures, deforestation, and outbreaks of livestock diseases. It goes on to say that the major climatic factors affecting water sources and livestock productivity in Karamoja are higher temperatures, drying of rivers, dams, and other seasonal surface water sources, decreases in water levels, and heavy rains, floods, and reduced infiltration, and climate change has an 84.7 percent positive impact on water sources for animals and productivity. The following adaptation measures have been proposed: Diversification of livestock and crop varieties, massive tree planting (agroforestry) awareness and sensitization campaigns, increased government and partner investment in water harvesting and agroforestry schemes, and improved capacity of all organizations and institutes involved. Tue, 16 Nov 2021 00:00:00 GMT http://repository.pauwes-cop.net/handle/1/459 2021-11-16T00:00:00Z http://repository.pauwes-cop.net/handle/1/451 Spatial and temporal variability of rainfall under an arid climate condition: Case of Gafsa Basin, Southern Tunisia. ALIMI, HAYKEL Understanding the rainfall variability should put into consideration several aspects in order to highlight facts and trying to recommend solutions. In a continental scale the Republic of Tunisia is one of the countries inside the MENA region and extremely affected by the global climate change condition same like all the countries abound. The study of the variability should identify the problem statements according to adequate and meaningful data sets to get into concrete results to cope with climatic challenges and cite recommendations therefore considered as a priority for future life. The basin of GAFSA located in the south western of the Tunisia republic, statistical analysis following several models based on rainfall data recorded during around 56 years from 1960 to 2015 at 18 rainfall stations highlighted that the GAFSA region is characterised by a significant variability in precipitation, this instability derived from a sequence of analysis in which both a descriptive and a spectral analysis (Wavelet analysis) combine to show up specific components reflects this spatial- temporal variability of precipitation such as , Altitude, longitude, latitude and the frequency of rainfall. Mon, 15 Nov 2021 00:00:00 GMT http://repository.pauwes-cop.net/handle/1/451 2021-11-15T00:00:00Z http://repository.pauwes-cop.net/handle/1/447 ASSESSING THE RESPONSE OF HYDROLOGICAL PROCESSES TO CLIMATE CHANGE IN THE PRA RIVER BASIN, GHANA ACHEAMPONG, Collins ABSTRACT The Pra River Basin (PRB), Ghana, provides significant agricultural productivity and ecosystem services to Ghana. The challenge in water management within the PRB is constantly becoming a topical issue owing to the influence of increased climate change. Also, recent scenarios in climate variability have resulted in changing temperature and rainfall pattern thereby threatening water resource in three dams that source its water from the river basin. This has also negatively impacted river flow attributable to high rate of pollution, increased runoff, and high evaporation. It is therefore important to have an understanding of the consequence of variation in climate change on current and future hydrologic regimes and hydrologic extreme events through modelling approach. Hence, this research investigated the response of hydrological processes and hydrologic extremes in relation to climate change in the River Pra Basin by employing five (5) new Coupled Model Intercomparison Project (CMIP6) GCM for two time slices, near future (2030s) and mid future (2050s) under two emission SSP2-4.5 and SSP5-8.5 scenarios. Preliminary analysis revealed bias-corrected CNRM-CM6-1 (with linear scaling technique for precipitation and distribution mapping approach for temperature) as the best suitable climate model for climate change projection and further assessment of climate change impacts on streamflow and hydrologic extremes. SWAT model calibrated and validated data results compared with observed flow data were deemed satisfactory for future flow simulations over the Pra Basin. The change in projected monthly CNRM-CM6-1 precipitation data show variable temporal trends ranging between 2.84-5.74 mm under both SSP2-4.5 and SSP5-8.5 and with a more seasonal variation in change in precipitation projected under SSP5-8.5. Also, a continuous increasing trend is observed for mean projected temperature under SSP2-4.5 and SSP5-8.5 scenarios. The mean flow by the end of the middle of 21st century was projected to decrease at about 20.8% under SSP2-4.5 and 28.2% under SSP5-8.5 relative to the baseline period. Also, all seasons showed a decrease in annual seasonal discharge for the period of 2045 to 2074. Finally, the analysis of hydrologic flow regimes for extreme streamflow assessment revealed that the variability and magnitude of floods may increase in the near future due to increase in Q1(13.5%) and Q5 (5.4%) under SSP5. Hence flood mitigation measures as well as proper water resources management strategies must be ensured by stakeholders through the implementation of the PRB IWRM plan to avoid any catastrophes downstream of the basin. Mon, 15 Nov 2021 00:00:00 GMT http://repository.pauwes-cop.net/handle/1/447 2021-11-15T00:00:00Z http://repository.pauwes-cop.net/handle/1/446 STATISTICAL ANALYSIS FOR FLOOD HAZARD ASSESSMENT UNDER CLIMATE CHANGE IN THE NIGER RIVER BASIN: CASE STUDY OF MEKROU RIVER SUB-BASIN (BENIN) GBAGUIDI, Sewanou Juferlin ABSTRACT Literally, West Africa has experienced climate change and variability in terms of frequency, intensity, and persistence of extreme changes, such as floods and droughts as well. The occurrence of rainfall deficits and excess has meaningfully increased in recent years. Yet, these events have had serious impacts on the environment, economy and human lives. Niger River basin also experienced some negative effects of climate change. However, there is lack of knowledge on flood hazard potential in the basin and mostly in its sub-basins. The main objective of this study was to assess the flood hazard occurrence under climate change in the Mekrou basin. Daily rainfall and stream flow data recorded over a 30-year period, 30-meter grid of digital elevation model (DEM) dataset, land use/land cover datasets to create curve number (CN) values of the river catchment were used for hydrological modelling using ArcGIS. The SCS Curve Number method was used to perform Loss model, then SCS Unit Hydrograph for Transform model and Lag method for Routing model to compute the input basin and river reach parameter values for each sub-basin, for instance initial abstraction, curve number, imperviousness and lag time for both basin and river reach, in HEC-HMS to compute a 5-year, 10-year, 20-year, 30-year, 50-year and 100-year flood for the entire catchment. The result reveals an increase in future quantile change compared to the historical quantiles. The change ranges between 9.09% and 57.29% for the period (2026-2055) and 21.12% to 75% for 2070-2099. Therefore, it is clearly indicated that flood frequency will increase in the middle and by the end of 21st century due to the climate change, in the Mekrou River basin. It has been noticed that when the return period increase, the discharge quantiles increase too. That’s mean higher discharge will be recorded by 2100 compared to 2050 as well as the historical period (1983-2005) based on the result of the study. Mon, 29 Nov 2021 00:00:00 GMT http://repository.pauwes-cop.net/handle/1/446 2021-11-29T00:00:00Z